ON Semiconductor MC7800, MC7800A, NCV7805 Technical data

MC7800, MC7800A,
NCV7805

1.0 A Positive Voltage
Regulators

These voltage regulators are monolithic integrated circuits designed
as fixed−voltage regulators for a wide variety of applications
including local, on−card regulation. These regulators employ internal
current limiting, thermal shutdown, and safe−area compensation. With
adequate heatsinking they can deliver output currents in excess of

1.0 A. Although designed primarily as a fixed voltage regulator, these
devices can be used with external components to obtain adjustable
voltages and currents.

• Output Current in Excess of 1.0 A

• No External Components Required

• Internal Thermal Overload Protection

• Internal Short Circuit Current Limiting

• Output Transistor Safe−Area Compensation

• Output Voltage Offered in 2% and 4% Tolerance

• Available in Surface Mount D

3−Lead Transistor Packages

• NCV Prefix for Automotive and Other Applications Requiring Site

and Control Changes

• Pb−Free Packages are Available

2

PAK−3, DPAK−3 and Standard

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TO−220−3

T SUFFIX

CASE 221A

Heatsink surface

1

2

3

Pin 1. Input

2. Ground

1

3

Heatsink surface (shown as terminal 4 in

case outline drawing) is connected to Pin 2.

4

2

1

3

3. Output

connected to Pin 2.

D

D2T SUFFIX

CASE 936

DPAK−3

DT SUFFIX

CASE 369C

2

PAK−3

MAXIMUM RATINGS (T

Rating Symbol

Input Voltage (5.0 − 18 V)

Power Dissipation P
Thermal Resistance,

Junction−to−Ambient
Thermal Resistance,

Junction−to−Case
Storage Junction

Temperature Range
Operating Junction

Temperature

Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.

NOTE: ESD data available upon request.

= 25°C, unless otherwise noted)

A

369C 221A

V

(24 V)

I

D

R



JA

R



JC

T

stg

T

J

Internally Limited W

92 65 Figure 14 °C/W

5.0 5.0 5.0 °C/W

Value

936

35
40

−65 to +150 °C

+150 °C

Unit

Vdc

STANDARD APPLICATION

Input

C

*

in

0.33 F

A common ground is required between the
input and the output voltages. The input voltage
must remain typically 2.0 V above the output
voltage even during the low point on the input
ripple voltage.

XX,

These two digits of the type number
indicate nominal voltage.

C

*

is required if regulator is located an

in

appreciable distance from power supply
filter.

is not needed for stability; however,

**

C

O

it does improve transient response. Values
of less than 0.1 F could cause instability.

MC78XX

Output

C

O

**

ORDERING INFORMATION

See detailed ordering and shipping information in the package
dimensions section on page 21 of this data sheet.

DEVICE MARKING INFORMATION

See general marking information in the device marking
section on page 25 of this data sheet.

 Semiconductor Components Industries, LLC, 2004

July, 2004 − Rev. 13

1 Publication Order Number:

MC7800/D

R18
100 k

D1
Zener

Q7
QNPN

R17

9.0 k

R1

10.66 k

R2

1.56 k

Q8
QNPN

LAT
Q17

Q6
QNPN

QNPN 2

QNPN

Q9

Q14

Q5
QNPN 2

R6

1.0 k

MC7800, MC7800A, NCV7805

MC7800

R11
15 k

R5

4.5 k

C2

3.0 P

Q13
QNPN

QNPN 6

R24
50

LAT 3 A
Q18

QNPN

QNPN

Q1

R7
14 kR31.8 k

Q10

Q15

Q2
QNPN 4

C3

R22
100

R20
17500

N+

Q4

QNPN

Q16

Diode

1.0 P

C1
30 P

R8

5.0 k

QNPN

R16
600

R9

3.0 k

Q3
QNPN

Q12

Q19
QNPN

R19

27.5 k

R21

600

R10

3340−(3316ACT)

SUB
Q11 2

D2
Zener

R14

1.0 k

3.0 k

6.0 k

3.0 k

R13
11660

R12

R25

R26

R15
680

Q20
QNPN

R23

0.2

V

R29

9.0 k

R28

9.0 k

R27

9.0 k

in

V

out

5.01

R30
18 k

Sense

This device contains 22 active transistors.

Figure 1. Representative Schematic Diagram

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2

MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 10 V, IO = 500 mA, TJ = T

in

low

to T

(Note 1), unless otherwise noted)

high

MC7805B, NCV7805 MC7805C

Characteristic Symbol Min Typ Max Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W)

7.0 Vdc ≤ Vin ≤ 20 Vdc

8.0 Vdc ≤ V

Line Regulation (Note 4)

≤ 20 Vdc

in

Reg

7.5 Vdc ≤ Vin ≤ 20 Vdc, 1.0 A

8.0 Vdc ≤ V

Load Regulation (Note 4)

≤ 12 Vdc

in

Reg

5.0 mA ≤ IO ≤ 1.0 A

5.0 mA ≤ I

≤ 1.5 A (TA = 25°C)

O

Quiescent Current I
Quiescent Current Change

7.0 Vdc ≤ Vin ≤ 25 Vdc

5.0 mA ≤ I

≤ 1.0 A (TA = 25°C)

O

Ripple Rejection

O

V

O

line

load

B

I

B

RR − 68 − 62 83 − dB

4.8 5.0 5.2 4.8 5.0 5.2 Vdc
Vdc

−

4.75

−

−

5.0

5.0

1.3

−

−

5.25
100

50

4.75

−

−

−

5.0

0.5

0.8

5.25

−
20

−
mV

10

mV

−

−

1.3

0.15

100

50

−

−

1.3

1.3

25
25

− 3.2 8.0 − 3.2 6.5 mA
mA

−

−

−

−

0.5

−

−

−

0.3

0.08

1.0

0.8

8.0 Vdc ≤ Vin ≤ 18 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C)

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C)

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

1. T

=0°C for MC78XXAC, C, T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, NCV7805

high

V

I

SC

max

n

O

O

− 2.0 − − 2.0 − Vdc

O

− 10 − − 10 − V/V

− 0.9 − − 0.9 − m

− 0.2 − − 0.6 − A

− 2.2 − − 2.2 − A

− −0.3 − − −0.3 − mV/°C

O

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately . Pulse testing with low duty cycle is used.

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3

MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 10 V, IO = 1.0 A, TJ = T

in

low

to T

(Note 3), unless otherwise noted)

high

MC7805AB/MC7805AC

Characteristic Symbol Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W)

7.5 Vdc ≤ V

≤ 20 Vdc

in

Line Regulation (Note 4) Reg

O

V

O

line

4.9 5.0 5.1 Vdc

4.8 5.0 5.2 Vdc

mV

7.5 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA − 0.5 10

8.0 Vdc ≤ Vin ≤ 12 Vdc, IO = 1.0 A − 0.8 12

8.0 Vdc ≤ Vin ≤ 12 Vdc, IO = 1.0 A, TJ = 25°C − 1.3 4.0

7.3 Vdc ≤ Vin ≤ 20 Vdc, IO = 1.0 A, TJ = 25°C − 4.5 10

Load Regulation (Note 4) Reg

load

mV

5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 1.3 25

5.0 mA ≤ IO ≤ 1.0 A − 0.8 25

250 mA ≤ IO ≤ 750 mA − 0.53 15
Quiescent Current I
Quiescent Current Change I

B

B

− 3.2 6.0 mA
mA

8.0 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA − 0.3 0.8

7.5 Vdc ≤ Vin ≤ 20 Vdc, TJ = 25°C − − 0.8

5.0 mA ≤ IO ≤ 1.0 A − 0.08 0.5

Ripple Rejection

RR 68 83 − dB

8.0 Vdc ≤ Vin ≤ 18 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C)

10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz) r
Short Circuit Current Limit (TA = 25°C)

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

3. T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

V

I

SC

max

O

n

O

O

− 2.0 − Vdc

− 10 − V/V

− 0.9 − m

− 0.2 − A

− 2.2 − A

− −0.3 − mV/°C

O

4. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately . Pulse testing with low duty cycle is used.

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4

MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 11 V, IO = 500 mA, TJ = T

in

low

to T

(Note 5), unless otherwise noted)

high

MC7806B MC7806C

Characteristic Symbol Min Typ Max Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

5.75 6.0 6.25 5.75 6.0 6.25 Vdc

8.0 Vdc ≤ Vin ≤ 21 Vdc − − − 5.7 6.0 6.3

9.0 Vdc ≤ Vin ≤ 21 Vdc 5.7 6.0 6.3 − − −

Line Regulation, TJ = 25°C (Note 6) Reg

line

8.0 Vdc ≤ Vin ≤ 25 Vdc − 5.5 120 − 0.5 24

9.0 Vdc ≤ Vin ≤ 13 Vdc − 1.4 60 − 0.8 12

Load Regulation, TJ = 25°C (Note 6) Reg

load

− 1.3 120 − 1.3 30 mV

5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current (TJ = 25°C) I
Quiescent Current Change I

B

B

− 3.3 8.0 − 3.3 8.0 mA

8.0 Vdc ≤ Vin ≤ 25 Vdc − − − − 0.3 1.3

5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − 0.08 0.5
Ripple Rejection RR − 65 − 58 65 − dB

9.0 Vdc ≤ Vin ≤ 19 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C) V

O

n

− 2.0 − − 2.0 − Vdc

− 10 − − 10 − V/V

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 0.9 − − 0.9 − m

− 0.2 − − 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output

max

TCV

O

− 2.2 − − 2.2 − A

− −0.3 − − −0.3 − mV/°C

Voltage

5. T

6. Load and line regulation are specified at constant junction temperature. Changes in V

=0°C for MC78XXAC, C T

low

= −40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, NCV7805

high

separately . Pulse testing with low duty cycle is used.

due to heating effects must be taken into account

O

Vdc

mV

mA

O

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5

MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 11 V, IO = 1.0 A, TJ = T

in

low

to T

(Note 7), unless otherwise noted)

high

MC7806AC

Characteristic Symbol Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

5.88 6.0 6.12 Vdc

5.76 6.0 6.24 Vdc

8.6 Vdc ≤ Vin ≤ 21 Vdc

Line Regulation (Note 8) Reg

line

mV

8.6 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA − 5.0 12

9.0 Vdc ≤ Vin ≤ 13 Vdc, IO = 1.0 A − 1.4 15

Load Regulation (Note 8) Reg

load

mV

5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 1.3 25

5.0 mA ≤ IO ≤ 1.0 A − 0.9 25

250 mA ≤ IO ≤ 750 mA − 0.2 15
Quiescent Current I
Quiescent Current Change I

B

B

− 3.3 6.0 mA
mA

9.0 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA − − 0.8

9.0 Vdc ≤ Vin ≤ 21 Vdc, IO = 1.0 A, TJ = 25°C − − 0.8

5.0 mA ≤ IO ≤ 1.0 A − − 0.5

Ripple Rejection RR 58 65 − dB

9.0 Vdc ≤ Vin ≤ 19 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C) V

O

n

− 2.0 − Vdc

− 10 − V/V

O

10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz) r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 0.9 − m

− 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

7. T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

− 2.2 − A

− −0.3 − mV/°C

8. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately . Pulse testing with low duty cycle is used.

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MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 14 V, IO = 500 mA, TJ = T

in

low

to T

(Note 9), unless otherwise noted)

high

MC7808B MC7808C

Characteristic Symbol Min Typ Max Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

7.7 8.0 8.3 7.7 8.0 8.3 Vdc

10.5 Vdc ≤ Vin ≤ 23 Vdc − − − 7.6 8.0 8.4

11.5 Vdc ≤ Vin ≤ 23 Vdc 7.6 8.0 8.4 − − −

Line Regulation, TJ = 25°C, (Note 10) Reg

line

10.5 Vdc ≤ Vin ≤ 25 Vdc − 6.0 160 − 6.0 32
11 Vdc ≤ Vin ≤ 17 Vdc − 1.7 80 − 1.7 16

Load Regulation, TJ = 25°C (Note 10) Reg

load

− 1.4 160 − 1.4 35 mV

5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current I
Quiescent Current Change I

B

B

− 3.3 8.0 − 3.3 8.0 mA

10.5 Vdc ≤ Vin ≤ 25 Vdc − − − − − 1.0

5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5
Ripple Rejection RR − 62 − 56 62 − dB

11.5 Vdc ≤ Vin ≤ 18 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C) V

O

n

− 2.0 − − 2.0 − Vdc

− 10 − − 10 − V/V

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 0.9 − − 0.9 − m

− 0.2 − − 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

9. T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

10.Load and line regulation are specified at constant junction temperature. Changes in V
separately . Pulse testing with low duty cycle is used.

− 2.2 − − 2.2 − A

− −0.4 − − −0.4 − mV/°C

due to heating effects must be taken into account

O

Vdc

mV

mA

O

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7

MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 14 V, IO = 1.0 A, TJ = T

in

low

to T

(Note 11), unless otherwise noted)

high

Characteristic Symbol Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W)

10.6 Vdc ≤ V

≤ 23 Vdc

in

Line Regulation (Note 12)

10.6 Vdc ≤ V
11 Vdc ≤ V

10.4 Vdc ≤ V

≤ 25 Vdc, IO = 500 mA

in

≤ 17 Vdc, IO = 1.0 A

in

≤ 23 Vdc, TJ = 25°C

in

Load Regulation (Note 12)

5.0 mA ≤ I

5.0 mA ≤ I
250 mA ≤ I

≤ 1.5 A, TJ = 25°C

O

≤ 1.0 A

O

≤ 750 mA

O

Quiescent Current I
Quiescent Current Change

11 Vdc ≤ V

10.6 Vdc ≤ V

5.0 mA ≤ I

≤ 25 Vdc, IO = 500 mA

in

≤ 23 Vdc, IO = 1.0 A, TJ = 25°C

in

≤ 1.0 A

O

Ripple Rejection

11.5 Vdc ≤ V

≤ 21.5 Vdc, f = 120 Hz, IO = 500 mA

in

Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C)

O

V

O

Reg

line

Reg

load

B

I

B

RR 56 62 − dB

O

V

n

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C)

V

= 35 Vdc

in

Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

11. T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

I

SC

max

O

O

12.Load and line regulation are specified at constant junction temperature. Changes in V
separately . Pulse testing with low duty cycle is used.

MC7808AB/MC7808AC

7.84 8.0 8.16 Vdc

7.7 8.0 8.3 Vdc

mV

−

−

−

6.0

1.7

5.0

15
18
15

mV

−

−

−

1.4

1.0

0.22

25
25
15

− 3.3 6.0 mA
mA

−

−

−

−

−

−

0.8

0.8

0.5

− 2.0 − Vdc

− 10 − V/V

− 0.9 − m

− 0.2 − A

− 2.2 − A

− −0.4 − mV/°C

due to heating effects must be taken into account

O

O

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MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 15 V, IO = 500 mA, TJ = T

in

low

to T

(Note 13), unless otherwise noted)

high

MC7809B MC7809C

Characteristic Symbol Min Typ Max Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

8.65 9.0 9.35 8.65 9.0 9.35 Vdc

11.5 Vdc ≤ Vin ≤ 24 Vdc 8.55 9.0 9.45 8.55 9.0 9.45

Line Regulation, TJ = 25°C (Note 14) Reg

line

11 Vdc ≤ Vin ≤ 26 Vdc − 6.2 32 − 6.2 32

11.5 Vdc ≤ Vin ≤ 17 Vdc − 1.8 16 − 1.8 16

Load Regulation, TJ = 25°C (Note 14) Reg

load

− 1.5 35 − 1.5 35 mV

5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current I
Quiescent Current Change I

B

B

− 3.4 8.0 − 3.4 8.0 mA

11.5 Vdc ≤ Vin ≤ 26 Vdc − − 1.0 − − 1.0

5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5
Ripple Rejection RR 56 61 − 56 61 − dB

11.5 Vdc ≤ Vin ≤ 21.5 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C) V

O

n

− 2.0 − − 2.0 − Vdc

− 10 − − 10 − V/V

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 1.0 − − 1.0 − m

− 0.2 − − 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

13.T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

14.Load and line regulation are specified at constant junction temperature. Changes in V
separately . Pulse testing with low duty cycle is used.

− 2.2 − − 2.2 − A

− −0.5 − − −0.5 − mV/°C

due to heating effects must be taken into account

O

Vdc

mV

mA

O

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MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 19 V, IO = 500 mA, TJ = T

in

low

to T

(Note 15), unless otherwise noted)

high

MC7812B MC7812C

Characteristic Symbol Min Typ Max Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

11.5 12 12.5 11.5 12 12.5 Vdc
Vdc

14.5 Vdc ≤ Vin ≤ 27 Vdc − − − 11.4 12 12.6

15.5 Vdc ≤ Vin ≤ 27 Vdc 11.4 12 12.6 − − −

Line Regulation, TJ = 25°C (Note 16) Reg

line

mV

14.5 Vdc ≤ Vin ≤ 30 Vdc − 7.5 240 − 3.8 24
16 Vdc ≤ Vin ≤ 22 Vdc − 2.2 120 − 0.3 24

14.8 Vdc ≤ Vin ≤ 27 Vdc, IO = 1.0 A − − − − − 48

Load Regulation, TJ = 25°C (Note 16) Reg

load

− 1.6 240 − 8.1 60 mV

5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current I
Quiescent Current Change I

B

B

− 3.4 8.0 − 3.4 6.5 mA
mA

14.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C − − − − − 0.7
15 Vdc ≤ Vin ≤ 30 Vdc − − 1.0 − − 0.8

5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5

Ripple Rejection RR − 60 − 55 60 − dB

15 Vdc ≤ Vin ≤ 25 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C) V

O

n

− 2.0 − − 2.0 − Vdc

− 10 − − 10 − V/V

O

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 1.1 − − 1.1 − m

− 0.2 − − 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

15.T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

− 2.2 − − 2.2 − A

− −0.8 − − −0.8 − mV/°C

16.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately . Pulse testing with low duty cycle is used.

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10

MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 19 V, IO = 1.0 A, TJ = T

in

low

to T

(Note 17), unless otherwise noted)

high

MC7812AB/MC7812AC

Characteristic Symbol Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

11.75 12 12.25 Vdc

11.5 12 12.5 Vdc

14.8 Vdc ≤ Vin ≤ 27 Vdc

Line Regulation (Note 18) Reg

line

mV

14.8 Vdc ≤ Vin ≤ 30 Vdc, IO = 500 mA − 3.8 18
16 Vdc ≤ Vin ≤ 22 Vdc, IO = 1.0 A − 2.2 20

14.5 Vdc ≤ Vin ≤ 27 Vdc, TJ = 25°C − 6.0 120

Load Regulation (Note 18) Reg

load

mV

5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − − 25

5.0 mA ≤ IO ≤ 1.0 A − − 25
Quiescent Current I
Quiescent Current Change I

B

B

− 3.4 6.0 mA
mA

15 Vdc ≤ Vin ≤ 30 Vdc, IO = 500 mA − − 0.8

14.8 Vdc ≤ Vin ≤ 27 Vdc, TJ = 25°C − − 0.8

5.0 mA ≤ IO ≤ 1.0 A, TJ = 25°C − − 0.5

Ripple Rejection RR 55 60 − dB

15 Vdc ≤ Vin ≤ 25 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C) V

O

n

− 2.0 − Vdc

− 10 − V/V

O

10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz) r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 1.1 − m

− 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

17.T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

− 2.2 − A

− −0.8 − mV/°C

18.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately . Pulse testing with low duty cycle is used.

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MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 23 V, IO = 500 mA, TJ = T

in

low

to T

(Note 19), unless otherwise noted)

high

MC7815B MC7815C

Characteristic Symbol Min Typ Max Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

14.4 15 15.6 14.4 15 15.6 Vdc
Vdc

17.5 Vdc ≤ Vin ≤ 30 Vdc − − − 14.25 15 15.75

18.5 Vdc ≤ Vin ≤ 30 Vdc 14.25 15 15.75 − − −

Line Regulation, TJ = 25°C (Note 20) Reg

line

mV

17.9 Vdc ≤ Vin ≤ 30 Vdc − 8.5 300 − 8.5 30
20 Vdc ≤ Vin ≤ 26 Vdc − 3.0 150 − 3.0 28

Load Regulation, TJ = 25°C (Note 20) Reg

load

− 1.8 300 − 1.8 55 mV

5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current I
Quiescent Current Change I

B

B

− 3.5 8.0 − 3.5 6.5 mA
mA

17.5 Vdc ≤ Vin ≤ 30 Vdc − − − − − 0.8

17.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C − − 1.0 − − 0.7

5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5

Ripple Rejection RR − 58 − 54 58 − dB

18.5 Vdc ≤ Vin ≤ 28.5 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) V
Output Noise Voltage (TA = 25°C) V

− V

I

O

n

− 2.0 − − 2.0 − Vdc

− 10 − − 10 − V/V

O

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 1.2 − − 1.2 − m

− 0.2 − − 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

19.T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

− 2.2 − − 2.2 − A

− −1.0 − − −1.0 − mV/°C

20.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately . Pulse testing with low duty cycle is used.

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12

MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 23 V, IO = 1.0 A, TJ = T

in

low

to T

(Note 21), unless otherwise noted)

high

MC7815AB/MC7815AC

Characteristic Symbol Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

14.7 15 15.3 Vdc

14.4 15 15.6 Vdc

17.9 Vdc ≤ Vin ≤ 30 Vdc

Line Regulation (Note 22) Reg

line

17.9 Vdc ≤ Vin ≤ 30 Vdc, IO = 500 mA − 8.5 20
20 Vdc ≤ Vin ≤ 26 Vdc − 3.0 22

17.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C − 7.0 20

Load Regulation (Note 22) Reg

load

5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 1.8 25

5.0 mA ≤ IO ≤ 1.0 A − 1.5 25

250 mA ≤ IO ≤ 750 mA − 1.2 15
Quiescent Current I
Quiescent Current Change I

B

B

− 3.5 6.0 mA

17.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 500 mA − − 0.8

17.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C − − 0.8

5.0 mA ≤ IO ≤ 1.0 A − − 0.5

Ripple Rejection RR 60 80 − dB

18.5 Vdc ≤ Vin ≤ 28.5 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C) V

O

n

− 2.0 − Vdc

− 10 − V/V

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 1.2 − m

− 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

21.T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

22.Load and line regulation are specified at constant junction temperature. Changes in V
separately . Pulse testing with low duty cycle is used.

− 2.2 − A

− −1.0 − mV/°C

due to heating effects must be taken into account

O

mV

mV

mA

O

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13

MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 27 V, IO = 500 mA, TJ = T

in

low

to T

(Note 23), unless otherwise noted)

high

MC7818B MC7818C

Characteristic Symbol Min Typ Max Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

17.3 18 18.7 17.3 18 18.7 Vdc

21 Vdc ≤ Vin ≤ 33 Vdc − − − 17.1 18 18.9
22 Vdc ≤ Vin ≤ 33 Vdc 17.1 18 18.9 − − −

Line Regulation, (Note 24) Reg

line

21 Vdc ≤ Vin ≤ 33 Vdc − 9.5 360 − 9.5 50
24 Vdc ≤ Vin ≤ 30 Vdc − 3.2 180 − 3.2 25

Load Regulation, (Note 24) Reg

load

− 2.0 360 − 2.0 55 mV

5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current I
Quiescent Current Change I

B

B

− 3.5 8.0 − 3.5 6.5 mA

21 Vdc ≤ Vin ≤ 33 Vdc − − − − − 1.0

5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5
Ripple Rejection RR − 57 − 53 57 − dB

22 Vdc ≤ Vin ≤ 33 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) V
Output Noise Voltage (TA = 25°C) V

− V

iI

O

n

− 2.0 − − 2.0 − Vdc

− 10 − − 10 − V/V

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 1.3 − − 1.3 − m

− 0.2 − − 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

23.T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

24.Load and line regulation are specified at constant junction temperature. Changes in V
separately . Pulse testing with low duty cycle is used.

− 2.2 − − 2.2 − A

− −1.5 − − −1.5 − mV/°C

due to heating effects must be taken into account

O

Vdc

mV

mA

O

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MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 27 V, IO = 1.0 A, TJ = T

in

low

to T

(Note 25), unless otherwise noted)

high

MC7818AC

Characteristic Symbol Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

17.64 18 18.36 Vdc

17.3 18 18.7 Vdc

21 Vdc ≤ Vin ≤ 33 Vdc

Line Regulation (Note 26) Reg

line

21 Vdc ≤ Vin ≤ 33 Vdc, IO = 500 mA − 9.5 22
24 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A − 3.2 25
24 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C − 3.2 10.5

20.6 Vdc ≤ Vin ≤ 33 Vdc, IO = 1.0 A, TJ = 25°C − 8.0 22

Load Regulation (Note 26) Reg

load

5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 2.0 25

5.0 mA ≤ IO ≤ 1.0 A − 1.8 25

250 mA ≤ IO ≤ 750 mA − 1.5 15
Quiescent Current I
Quiescent Current Change I

B

B

− 3.5 6.0 mA

21 Vdc ≤ Vin ≤ 33 Vdc, IO = 500 mA − − 0.8

21.5 Vdc ≤ Vin ≤ 30 Vdc, TJ = 25°C − − 0.8

5.0 mA ≤ IO ≤ 1.0 A − − 0.5

Ripple Rejection RR 53 57 − dB

22 Vdc ≤ Vin ≤ 32 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C) V

O

n

− 2.0 − Vdc

− 10 − V/V

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 1.3 − m

− 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

25.T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

26.Load and line regulation are specified at constant junction temperature. Changes in V
separately . Pulse testing with low duty cycle is used.

− 2.2 − A

− −1.5 − mV/°C

due to heating effects must be taken into account

O

mV

mV

mA

O

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15

MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 33 V, IO = 500 mA, TJ = T

in

low

to T

(Note 27), unless otherwise noted)

high

MC7824B MC7824C

Characteristic Symbol Min Typ Max Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

23 24 25 23 24 25 Vdc

27 Vdc ≤ Vin ≤ 38 Vdc − − − 22.8 24 25.2
28 Vdc ≤ Vin ≤ 38 Vdc 22.8 24 25.2 − − −

Line Regulation, (Note 28) Reg

line

27 Vdc ≤ Vin ≤ 38 Vdc − 11.5 480 − 2.7 60
30 Vdc ≤ Vin ≤ 36 Vdc − 3.8 240 − 2.7 48

Load Regulation, (Note 28) Reg

load

− 2.1 480 − 4.4 65 mV

5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current I
Quiescent Current Change I

B

B

− 3.6 8.0 − 3.6 6.5 mA

27 Vdc ≤ Vin ≤ 38 Vdc − − − − − 1.0

5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5
Ripple Rejection RR − 54 − 50 54 − dB

28 Vdc ≤ Vin ≤ 38 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) V
Output Noise Voltage (TA = 25°C) V

− V

I

O

n

− 2.0 − − 2.0 − Vdc

− 10 − − 10 − V/V

10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 1.4 − − 1.4 − m

− 0.2 − − 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

27.T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

28.Load and line regulation are specified at constant junction temperature. Changes in V
separately . Pulse testing with low duty cycle is used.

− 2.2 − − 2.2 − A

− −2.0 − − −2.0 − mV/°C

due to heating effects must be taken into account

O

Vdc

mV

mA

O

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MC7800, MC7800A, NCV7805

ELECTRICAL CHARACTERISTICS (V

= 33 V, IO = 1.0 A, TJ = T

in

low

to T

(Note 29), unless otherwise noted)

high

MC7824AC

Characteristic Symbol Min Typ Max Unit

Output Voltage (TJ = 25°C) V
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) V

O
O

23.5 24 24.5 Vdc

23.2 24 25.8 Vdc

27.3 Vdc ≤ Vin ≤ 38 Vdc

Line Regulation (Note 30) Reg

line

27 Vdc ≤ Vin ≤ 38 Vdc, IO = 500 mA − 11.5 25
30 Vdc ≤ Vin ≤ 36 Vdc, IO = 1.0 A − 3.8 28
30 Vdc ≤ Vin ≤ 36 Vdc, TJ = 25°C − 3.8 12

26.7 Vdc ≤ Vin ≤ 38 Vdc, IO = 1.0 A, TJ = 25°C − 10 25

Load Regulation (Note 30) Reg

load

5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 2.1 15

5.0 mA ≤ IO ≤ 1.0 A − 2.0 25

250 mA ≤ IO ≤ 750 mA − 1.8 15
Quiescent Current I
Quiescent Current Change I

B

B

− 3.6 6.0 mA

27.3 Vdc ≤ Vin ≤ 38 Vdc, IO = 500 mA − − 0.8

27 Vdc ≤ Vin ≤ 38 Vdc, TJ = 25°C − − 0.8

5.0 mA ≤ IO ≤ 1.0 A − − 0.5

Ripple Rejection RR 45 54 − dB

28 Vdc ≤ Vin ≤ 38 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − V
Output Noise Voltage (TA = 25°C) V

O

n

− 2.0 − Vdc

− 10 − V/V

10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz) r
Short Circuit Current Limit (TA = 25°C) I

O

SC

− 1.4 − m

− 0.2 − A

Vin = 35 Vdc
Peak Output Current (TJ = 25°C) I
Average Temperature Coefficient of Output Voltage TCV

29.T

=0°C for MC78XXAC, C T

low

= 40°C for MC78XXB, MC78XXAB, NCV7805

= +125°C for MC78XXAC, C, NCV7805

high

max

O

30.Load and line regulation are specified at constant junction temperature. Changes in V
separately . Pulse testing with low duty cycle is used.

− 2.2 − A

− −2.0 − mV/°C

due to heating effects must be taken into account

O

mV

mV

mA

O

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MC7800, MC7800A, NCV7805

3.0

2.5

2.0

T

= −40°C

J

T

J

= 0°C

T

= 25°C

J

1.5

T

= 85°C

1.0

, OUTPUT CURRENT (A)

O

I

0.5

0

4.0 8.0 12 20 30 40

6.0 10 15 25 35

Vin−V

out

J

T

= 125°C

J

, INPUT/OUTPUT VOLTAGE DIFFERENTIAL (V)

Figure 2. Peak Output Current as a Function of

Input/Output Differential Voltage (MC78XXC, AC, B)

80

70

MC78XXB, C, AC

60

50

RR, RIPPLE REJECTION (dB)

40

Vin = 8.0 V to 18 V
IO = 500 mA
f = 120 Hz
T

= 25°C

A

80

70

PART #  V
MC7805C= 10 V

60

MC7806C= 11 V

in

f = 120 Hz
IO = 20 mA
Vin = 1.0 V(RMS)

MC7808C= 14 V
MC7812C= 19 V
MC7815C= 23 V

50

RR, RIPPLE REJECTION (dB)

MC7818C= 27 V
MC7824C= 33 V

40

4.0 6.0 8.0 10 12 14 16 18 20 22 24

, OUTPUT VOLTAGE (V)

V

O

Figure 3. Ripple Rejection as a Function of

Output Voltages (MC78XXC, AC, B)

5.0

4.9

, OUTPUT VOLTAGE (V)

O

V

Vin = 20 V
IO = 5.0 mA

30

0.01

0.1 10

1.0

f, FREQUENCY (kHz)

Figure 4. Ripple Rejection as a Function of

Frequency (MC78XXC, AC, B)

10

Ω

5.0

3.0

2.0

f = 120 Hz
I

= 500 mA

O

CL = 0 F

1.0

0.5

, OUTPUT IMPEDANCE (m)

0.3

O

Z

0.2

0.1

4.0 8.0 12 16 20 24

, OUTPUT VOLTAGE (V)

V

O

Figure 6. Output Impedance as a Function of

Output Voltage (MC78XXC, AC, B)

4.8

−60 −20 20 60 100 140 180

, JUNCTION TEMPERATURE (°C)

T

J

Figure 5. Output Voltage as a Function of

Junction Temperature (MC7805C, AC, B)

6.0
Vin = 10 V

4.0

VO = 5.0 V
IL = 20 mA

3.0

2.0

, QUIESCENT CURRENT (mA)

1.0

B

I

0

−75 −50

−25 0 25 50 75 100 125

T

, JUNCTION TEMPERATURE (°C)

J

Figure 7. Quiescent Current as a Function of

Temperature (MC78XXC, AC, B)

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18

MC7800, MC7800A, NCV7805

APPLICATIONS INFORMATION

Design Considerations

The MC7800 Series of fixed voltage regulators are
designed with Thermal Overload Protection that shuts down
the circuit when subjected to an excessive power overload
condition, Internal Short Circuit Protection that limits the
maximum current the c ircuit w ill p ass, a nd O utput Transistor
Safe−Area C ompensation t hat r educes t he o utput s hort c ircuit
current as the voltage across the pass transistor is increased.

In many low current applications, compensation
capacitors are not required. However, it is recommended
that the regulator input be bypassed with a capacitor if the
regulator is connected to the power supply filter with long

Input

0.33 F

The MC7800 regulators can also be used as a current source when
connected as above. In order to minimize dissipation the MC7805C is
chosen in this application. Resistor R determines the current as follows:

MC7805

R

Constant
Current to
Grounded
Load

I

O

wire lengths, or if the output load capacitance is large. An
input bypass capacitor should be selected to provide good
high−frequency characteristics to insure stable operation
under all load conditions. A 0.33 F or larger tantalum,
mylar, or other capacitor having low internal impedance at
high frequencies should be chosen. The bypass capacitor
should be mounted with the shortest possible leads directly
across the regulators input terminals. Normally good
construction techniques should be used to minimize ground
loops and lead resistance drops since the regulator has no
external sense lead.

Output

0.1 F

10 k

Input

0.33 F

MC7805

1.0 k

7

2

6

4

3

MC1741G

5.0V

IO

I

 3.2 mA over line and load changes.

B

For example, a 1.0 A current source would require R to be a 5.0 ,
10 W resistor and the output voltage compliance would be the input
voltage less 7.0 V.

 I

B

R

Figure 8. Current Regulator Figure 9. Adjustable Output Regulator

R

Input

≥ 10 F

The MC7800 series can be current boosted with a PNP transistor. The
MJ2955 provides current to 5.0 A. Resistor R in conjunction with the V
of the PNP determines when the pass transistor begins conducting; this
circuit is not short circuit proof. Input/output differential voltage minimum is
increased by VBE of the pass transistor.

MJ2955 or Equiv.

Source

0.33 F

R

1.0 F

XX = 2 digits of type number indicating voltage.

MC78XX

Output

1.0 F

= 7.0 V to 20 V

V

O

VIN = V

≥ 2.0 V

O

The addition of an operational amplifier allows adjustment to higher or
intermediate values while retaining regulation characteristics. The
minimum voltage obtainable with this arrangement is 2.0 V greater than the
regulator voltage.

MJ2955

or Equiv.

R

Source

Input

≥ 10 F

The circuit of Figure 10 can be modified to provide supply protection

BE

against short circuits by adding a short circuit sense resistor, RSC, and an
additional PNP transistor. The current sensing PNP must be able to handle
the short circuit current of the three−terminal regulator. Therefore, a
four−ampere plastic power transistor is specified.

R

SC

0.33 F

2N6049

or Equiv.

R

1.0 F

XX = 2 digits of type number indicating voltage.

MC78XX

Output

Figure 10. Current Boost Regulator Figure 11. Short Circuit Protection

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19

MC7800, MC7800A, NCV7805

20



= 5°C/W

JC



= 65°C/W



= 0°C/W

16

12

8.0

4.0

, POWER DISSIPATION (W)

D

P

0

−50 −25 0 25 50 75 100 125 150

HS



= 5°C/W

HS



= 15°C/W

HS

No Heatsink

, AMBIENT TEMPERATURE (°C)

T

A

T

JA
J(max)

= 150°C

Figure 12. Worst Case Power Dissipation versus

Ambient Temperature (Case 221A)

80

JAθ

R , THERMAL RESISTANCE

70

60

50

JUNCTION-TO-AIR ( C/W)°

40

30

Free Air
Mounted

Vertically

010203025155.0

2.5

2.0

1.5

1.0

, INPUT−OUTPUT VOLTAGE

DIFFERENTIAL (V)

0.5

− VV
in out

0

−75 −50 −25 0 25 50 75 100 125

Figure 13. Input Output Differential as a Function

P

for T

D(max)

Minimum
Size Pad

R



JA

L, LENGTH OF COPPER (mm)

A

IO = 1.0 A

IO = 500 mA

IO = 200 mA

IO = 20 mA

IO = 0 mA

VO = 2% of V

O

− − − Extended Curve for MC78XXB

, JUNCTION TEMPERATURE (°C)

T

J

of Junction Temperature (MC78XXC, AC, B)

3.5

= 50°C

2.0 oz. Copper
L

L

3.0

2.5

2.0

1.5

1.0

, MAXIMUM POWER DISSIPATION (W)

D

P

Figure 14. D2PAK Thermal Resistance and Maximum

Power Dissipation versus P.C.B. Copper Length

JAθ

R , THERMAL RESISTANCE

100

90

80

70

60

JUNCTION−TO−AIR ( C/W)°

50

40

Free Air

Mounted

Vertically

Minimum
Size Pad

010203025155.0

L, LENGTH OF COPPER (mm)

P

D(max)

R

for T



JA

= 50°C

A

2.0 oz. Copper

L

Figure 15. DPAK Thermal Resistance and Maximum

Power Dissipation versus P.C.B. Copper Length

2.4

2.0

L

1.6

1.2

0.8

0.4
, MAXIMUM POWER DISSIPATION (W)

D

P

0

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20

MC7800, MC7800A, NCV7805

DEFINITIONS

Line Regulation − The change in output voltage for a

change in the input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques
such that the average chip temperature is not significantly
affected.

Load Regulation − The change in output voltage for a

change in load current at constant chip temperature.

Maximum Power Dissipation − The maximum total

device dissipation for which the regulator will operate

Quiescent Current − That part of the input current that is

not delivered to the load.

Output Noise Voltage − The rms ac voltage at the output,

with constant load and no input ripple, measured over a
specified frequency range.

Long Term Stability − Output voltage stability under

accelerated life test conditions with the maximum rated
voltage listed in the devices’ electrical characteristics and
maximum power dissipation.

within specifications.

ORDERING INFORMATION

Device Output Voltage Temperature Range Package Shipping

MC7805ABD2T D2PAK 50 Units / Rail
MC7805ABD2TR4
MC7805ABT TO−220 50 Units / Rail
MC7805ACD2T D2PAK 50 Units / Rail
MC7805ACD2TG D2PAK

MC7805ACD2TR4 D2PAK 800 / Tape & Reel
MC7805ACD2TR4G

MC7805ACT TO−220 50 Units / Rail
MC7805ACTG TO−220

MC7805BD2T D2PAK 50 Units / Rail
MC7805BD2TG

MC7805BD2TR4 D2PAK 800 / Tape & Reel
MC7805BD2TR4G D2PAK

MC7805BDT DPAK 75 Units / Rail
MC7805BDTRK
MC7805BDTRKG

MC7805BT TO−220 50 Units / Rail
MC7805BTG TO−220

NCV7805BD2T* D2PAK 50 Units / Rail
NCV7805BD2TR4* D2PAK 50 Units / Rail
NCV7805BT* TO−220 50 Units / Rail

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

*NCV devices: T

and change control.

= −40°C, T

low

high

5.0 V

= +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site

T = −40° to +125°C

T = 0° to +125°C

T = −40° to +125°C

D2PAK 800 / Tape & Reel

(Pb−Free)

D2PAK

(Pb−Free)

(Pb−Free)

D2PAK

(Pb−Free)

(Pb−Free)

DPAK 2500 / Tape & Reel
DPAK

(Pb−Free)

(Pb−Free)

50 Units / Rail

800 / Tape & Reel

50 Units / Rail

50 Units / Rail

800 / Tape & Reel

2500 / Tape & Reel

50 Units / Rail

†

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21

MC7800, MC7800A, NCV7805

ORDERING INFORMATION

Device Shipping

PackageTemperature RangeOutput Voltage

MC7805CD2T D2PAK 50 Units / Rail
MC7805CD2TR4 D2PAK 800 / T ape & Reel
MC7805CD2TR4G D2PAK

800 / Tape & Reel

(Pb−Free)

MC7805CDT

5.0 V T = 0° to +125°C

DPAK 75 Units / Rail
MC7805CDTRK DPAK 2500 / Tape & Reel
MC7805CT TO−220 50 Units / Rail
MC7805CTG TO−220

50 Units / Rail

(Pb−Free)
MC7806ACT T = 0° to +125°C TO−220 50 Units / Rail
MC7806BD2T D2PAK 50 Units / Rail
MC7806BD2TG D2PAK

50 Units / Rail

(Pb−Free)
MC7806BD2TR4
MC7806BD2TR4G

T = −40° to +125°C

6.0 V

D2PAK 800 / Tape & Reel
D2PAK

800 / Tape & Reel

(Pb−Free)
MC7806BT TO−220 50 Units / Rail
MC7806CT TO−220 50 Units / Rail
MC7806CTG

T = 0° to +125°C

TO−220

50 Units / Rail

(Pb−Free)
MC7808ABD2T D2PAK 50 Units / Rail
MC7808ABD2TR4

T = −40° to +125°C

D2PAK 800 / Tape & Reel
MC7808ABT TO−220 50 Units / Rail
MC7808ACT T = 0° to +125°C TO−220 50 Units / Rail
MC7808BD2T D2PAK 50 Units / Rail
MC7808BD2TG D2PAK

50 Units / Rail

(Pb−Free)

MC7808BD2TR4

8.0 V

D2PAK 800 / Tape & Reel
MC7808BDT DPAK 75 Units / Rail
MC7808BDTRK
MC7808BDTRKG DPAK

T = −40° to +125°C

DPAK 2500 / Tape & Reel

2500 / Tape & Reel

(Pb−Free)
MC7808BT TO−220 50 Units / Rail
MC7808BTG TO−220

50 Units / Rail

(Pb−Free)

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

*NCV devices: T

and change control.

= −40°C, T

low

= +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site

high

†

http://onsemi.com

22

MC7800, MC7800A, NCV7805

8.0 V

T

+125°C

12 V

ORDERING INFORMATION

Device Shipping

PackageTemperature RangeOutput Voltage

MC7808CD2T D2PAK 50 Units / Rail
MC7808CD2TR4 D2PAK 800 / T ape & Reel
MC7808CD2TR4G D2PAK

800 / Tape & Reel

(Pb−Free)
MC7808CDT DPAK 75 Units / Rail
MC7808CDTRK

=

°

= 0° to

°

MC7808CDTT5
MC7808CDTT5G DPAK

DPAK 2500 / Tape & Reel
DPAK 2500 / Tape & Reel

2500 / Tape & Reel

(Pb−Free)
MC7808CT TO−220 50 Units / Rail
MC7808CTG TO−220

50 Units / Rail

(Pb−Free)
MC7809ACT T = 0° to +125°C TO−220 50 Units / Rail
MC7809BT T = −40° to +125°C TO−220 50 Units / Rail
MC7809CD2T D2PAK 50 Units / Rail
MC7809CD2TR4
MC7809CT
MC7809CTG TO−220

9.0 V
T = 0° to +125°C

D2PAK 800 / Tape & Reel

TO−220 50 Units / Rail

50 Units / Rail

(Pb−Free)
MC7812ABD2T D2PAK 50 Units / Rail
MC7812ABD2TR4

T = −40° to +125°C

D2PAK 800 / Tape & Reel
MC7812ABT TO−220 50 Units / Rail
MC7812ACD2T D2PAK 50 Units / Rail
MC7812ACD2TR4 D2PAK 800 / Tape & Reel
MC7812ACT
MC7812ACTG TO−220

T = 0° to +125°C

TO−220 50 Units / Rail

50 Units / Rail

(Pb−Free)
MC7812BD2T D2PAK 50 Units / Rail
MC7812BD2TR4
MC7812BD2TR4G

D2PAK 800 / Tape & Reel
D2PAK

800 / Tape & Reel

(Pb−Free)
MC7812BDT DPAK 75 Units / Rail
MC7812BDTRK
MC7812BT

T = −40° to +125°C

MC7812BTG TO−220

DPAK 2500 / Tape & Reel

TO−220 50 Units / Rail

50 Units / Rail

(Pb−Free)
NCV7812BD2T* D2PAK 50 Units / Rail
NCV7812BD2TR4* D2PAK 800 / Tape & Reel
NCV7812BT* TO−220 50 Units / Rail

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

*NCV devices: T

and change control.

= −40°C, T

low

= +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site

high

†

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23

MC7800, MC7800A, NCV7805

12 V

T = 0 to +125 C

ORDERING INFORMATION

Device Shipping

PackageTemperature RangeOutput Voltage

MC7812CD2T D2PAK 50 Units / Rail
MC7812CD2TG D2PAK

50 Units / Rail

(Pb−Free)
MC7812CD2TR4 D2PAK 800 / T ape & Reel
MC7812CD2TR4G

12 V T = 0° to +125°C

MC7812CDT

D2PAK

800 / Tape & Reel

(Pb−Free)

DPAK 75 Units / Rail
MC7812CDTRK DPAK 2500 / Tape & Reel
MC7812CT TO−220 50 Units / Rail
MC7812CTG TO−220

50 Units / Rail

(Pb−Free)
MC7815ABD2T D2PAK 50 Units / Rail
MC7815ABD2TR4

T = −40° to +125°C

D2PAK 800 / Tape & Reel
MC7815ABT TO−220 50 Units / Rail
MC7815ACD2T D2PAK 50 Units / Rail
MC7815ACD2TG

D2PAK

800 / Tape & Reel

(Pb−Free)
MC7815ACT
MC7815ACTG TO−220

T = 0° to +125°C

TO−220 50 Units / Rail

50 Units / Rail

(Pb−Free)
MC7815BD2T D2PAK 50 Units / Rail
MC7815BD2TR4 D2PAK 800 / Tape & Reel
MC7815BD2TR4G D2PAK

800 / Tape & Reel

(Pb−Free)
MC7815BDT
MC7815BDTRK

15 V

T = −40° to +125°C

MC7815BDTRKG DPAK

DPAK 75 Units / Rail
DPAK 2500 / Tape & Reel

2500 / Tape & Reel

(Pb−Free)
MC7815BT TO−220 50 Units / Rail
MC7815BTG TO−220

50 Units / Rail

(Pb−Free)
MC7815CD2T D2PAK 50 Units / Rail
MC7815CD2TR4 D2PAK 800 / T ape & Reel
MC7815CDT DPAK 75 Units / Rail
MC7815CDTRK

T = 0° to +125°C

DPAK 2500 / Tape & Reel
MC7815CT TO−220 50 Units / Rail
MC7815CTG TO−220

50 Units / Rail

(Pb−Free)

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

*NCV devices: T

and change control.

= −40°C, T

low

= +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site

high

†

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24

MC7800, MC7800A, NCV7805

ORDERING INFORMATION

Device Shipping

PackageTemperature RangeOutput Voltage

MC7818ACT T = 0° to +125°C TO−220 50 Units / Rail
MC7818BT T = −40° to +125°C TO−220 50 Units / Rail
MC7818CD2T D2PAK 50 Units / Rail
MC7818CD2TR4
MC7818CT
MC7818CTG TO−220

18 V

T = 0° to +125°C

D2PAK 800 / Tape & Reel

TO−220 50 Units / Rail

50 Units / Rail

(Pb−Free)
MC7824ACT TO−220 50 Units / Rail
MC7824ACTG

T = 0° to +125°C

TO−220

50 Units / Rail

(Pb−Free)
MC7824BD2T D2PAK 50 Units / Rail
MC7824BD2TR4 D2PAK 800 / Tape & Reel
MC7824BT
MC7824BTG

24 V

T = −40° to +125°C

TO−220 50 Units / Rail
TO−220

50 Units / Rail

(Pb−Free)
MC7824CD2T D2PAK 50 Units / Rail
MC7824CD2TR4 D2PAK 800 / T ape & Reel
MC7824CT
MC7824CTG TO−220

T = 0° to +125°C

TO−220 50 Units / Rail

50 Units / Rail

(Pb−Free)

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

*NCV devices: T

and change control.

= −40°C, T

low

= +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site

high

†

MC

78xxAyT

AWLYWW

TO−220−3

T SUFFIX

CASE 221A

MARKING DIAGRAMS

*

MC

78xxyT

AWLYWW

*This marking diagram also applies to NCV78xx family.

xx = 05, 06, 08, 09, 12, 15, 18, or 24
y = B or C
A = Assembly Location
WL, L = Wafer Lot
Y = Year
WW = Work Week

MC

78xxAyD2T

AWLYWW

D2PAK−3

D2T SUFFIX

CASE 936

MC

78xxyD2T

AWLYWW

*

78xxy

ALYWW

DPAK−3

DT SUFFIX

CASE 369C

http://onsemi.com

25

MC7800, MC7800A, NCV7805

PACKAGE DIMENSIONS

TO−220−3

T SUFFIX

CASE 221A−09

ISSUE AA

SEATING

−T−

PLANE

B

4

Q

123

F

T

A

U

C

S

H

K

Z

L

V

R
J

G

D

N

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

3. DIMENSION Z DEFINES A ZONE WHERE ALL
BODY AND LEAD IRREGULARITIES ARE
ALLOWED.

DIM MIN MAX MIN MAX

A 0.570 0.620 14.48 15.75
B 0.380 0.405 9.66 10.28
C 0.160 0.190 4.07 4.82
D 0.025 0.035 0.64 0.88
F 0.142 0.147 3.61 3.73

G 0.095 0.105 2.42 2.66

H 0.110 0.155 2.80 3.93
J 0.018 0.025 0.46 0.64
K 0.500 0.562 12.70 14.27
L 0.045 0.060 1.15 1.52
N 0.190 0.210 4.83 5.33

Q 0.100 0.120 2.54 3.04

R 0.080 0.110 2.04 2.79
S 0.045 0.055 1.15 1.39
T 0.235 0.255 5.97 6.47
U 0.000 0.050 0.00 1.27
V 0.045 −−− 1.15 −−−
Z −−− 0.080 −−− 2.04

MILLIMETERSINCHES

http://onsemi.com

26

K

B

F

J

D

0.010 (0.254) T

M

C

A

12 3

G

OPTIONAL
CHAMFER

S

H

MC7800, MC7800A, NCV7805

PACKAGE DIMENSIONS

D2PAK−3

D2T SUFFIX

CASE 936−03

ISSUE B

−T−
E

M

N

R

SOLDERING FOOTPRINT*

8.38

0.33

TERMINAL 4

U

V

L

P

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

3. TAB CONTOUR OPTIONAL WITHIN DIMENSIONS
A AND K.

4. DIMENSIONS U AND V ESTABLISH A MINIMUM
MOUNTING SURFACE FOR TERMINAL 4.

5. DIMENSIONS A AND B DO NOT INCLUDE MOLD
FLASH OR GATE PROTRUSIONS. MOLD FLASH
AND GATE PROTRUSIONS NOT TO EXCEED

0.025 (0.635) MAXIMUM.

INCHES

DIMAMIN MAX MIN MAX

0.386 0.403 9.804 10.236

B 0.356 0.368 9.042 9.347
C 0.170 0.180 4.318 4.572
D 0.026 0.036 0.660 0.914
E 0.045 0.055 1.143 1.397
F 0.051 REF 1.295 REF
G 0.100 BSC 2.540 BSC
H 0.539 0.579 13.691 14.707
J 0.125 MAX 3.175 MAX
K 0.050 REF 1.270 REF
L 0.000 0.010 0.000 0.254

M 0.088 0.102 2.235 2.591

N 0.018 0.026 0.457 0.660
P 0.058 0.078 1.473 1.981



R
S 0.116 REF 2.946 REF
U 0.200 MIN 5.080 MIN
V 0.250 MIN 6.350 MIN

MILLIMETERS

5 REF5 REF

10.66

0.42

1.016

0.04

3.05

0.12

17.02

0.67

SCALE 3:1

D2PAK−3



inches

mm

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.

5.08

0.20



http://onsemi.com

27

MC7800, MC7800A, NCV7805

PACKAGE DIMENSIONS

DPAK−3

DT SUFFIX

CASE 369C−01

ISSUE O

NOTES:

SEATING

−T−

PLANE

B

V

S

R

4

A

123

K

F

L

D

2 PL

G

0.13 (0.005) T

C

E

Z

U

J

H

M

1. DIMENSIONING AND TOLERANCING
PER ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

DIM MIN MAX MIN MAX

A 0.235 0.245 5.97 6.22
B 0.250 0.265 6.35 6.73
C 0.086 0.094 2.19 2.38
D 0.027 0.035 0.69 0.88
E 0.018 0.023 0.46 0.58
F 0.037 0.045 0.94 1.14
G 0.180 BSC 4.58 BSC
H 0.034 0.040 0.87 1.01
J 0.018 0.023 0.46 0.58
K 0.102 0.114 2.60 2.89
L 0.090 BSC 2.29 BSC
R 0.180 0.215 4.57 5.45
S 0.025 0.040 0.63 1.01
U 0.020 −−− 0.51 −−−
V 0.035 0.050 0.89 1.27
Z 0.155 −−− 3.93 −−−

MILLIMETERSINCHES

SOLDERING FOOTPRINT*

6.20

0.244

2.58

0.101

5.80

0.228

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.

ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

3.0

0.118

1.6

0.063

SCALE 3:1

6.172

0.243

mm



inches



PUBLICATION ORDERING INFORMATION

LITERATURE FULFILLMENT:

Literature Distribution Center for ON Semiconductor
P.O. Box 61312, Phoenix, Arizona 85082−1312 USA

Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada
Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada
Email: [e-mail]

N. American Technical Support: 800−282−9855 Toll Free

USA/Canada
Japan: ON Semiconductor, Japan Customer Focus Center

2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051

Phone: 81−3−5773−3850

http://onsemi.com

28

ON Semiconductor Website: http://onsemi.com
Order Literature: http://www.onsemi.com/litorder

For additional information, please contact your
local Sales Representative.

MC7800/D