Datasheet MC7824CT, MC7824ACT, MC7815CT, MC7824ACD2T, MC7815ACT Datasheet (Motorola)

Order this document by MC7800/D

12 V

5.0 V

15 V

6.0 V

8.0 V

18 V

24 V

12 V

Insertion Mount

T

40° to +125°C

Insertion Mount



 
 
 

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 Of fered in 2% and 4% Tolerance

• Available in Surface Mount D

Packages

• Previous Commercial Temperature Range has been Extended to a

Junction Temperature Range of –40°C to +125°C

DEVICE TYPE/NOMINAL OUTPUT VOLTAGE

MC7805AC
LM340AT–5
MC7805C
LM340T–5
MC7806AC
MC7806C
MC7808AC
MC7808C
MC7809C
MC7812AC
LM340A T–12

2

P AK and Standard 3–Lead Transistor

MC7812C
LM340T–12
MC7815AC
LM340AT–15
MC7815C
LM340T–15
MC7818AC
MC7818C

9.0 V MC7824AC
MC7824C

 

THREE–TERMINAL

POSITIVE FIXED

VOLTAGE REGULATORS

SEMICONDUCTOR

TECHNICAL DATA

T SUFFIX

PLASTIC PACKAGE

CASE 221A

Heatsink surface

connected to Pin 2.

1

2

3

Pin 1. Input

2. Ground

3. Output

D2T SUFFIX

PLASTIC PACKAGE

CASE 936

(D2PAK)

Heatsink surface (shown as terminal 4 in

case outline drawing) is connected to Pin 2.

STANDARD APPLICATION

Input

0.33

Cin*

µ

F

MC78XX

2

1

3

Output

CO**

ORDERING INFORMATION

Output Voltage

Device

MC78XXACT
LM340AT–XX
MC78XXACD2T
MC78XXCT
LM340T–XX
MC78XXCD2T Surface Mount

XX indicates nominal voltage.

Tolerance

2%

4%

Operating

Temperature Range

–

J

= –

°

°

Package

Surface Mount

MOTOROLA ANALOG IC DEVICE DATA

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.

*

Cin is required if regulator is located an
appreciable distance from power supply
filter.

CO is not needed for stability; however,

**

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

 Motorola, Inc. 1997 Rev 5

1

MC7800, MC7800A, LM340, LM340A Series

MAXIMUM RATINGS (T

= 25°C, unless otherwise noted.)

A

Rating Symbol Value Unit

Input Voltage (5.0 – 18 V) V

I

Input Voltage (24 V) 40

Power Dissipation
Case 221A

TA = 25°C P
Thermal Resistance, Junction–to–Ambient R
Thermal Resistance, Junction–to–Case R

θJA
θJC

Internally Limited W

D

Case 936 (D2PAK)

TA = 25°C P
Thermal Resistance, Junction–to–Ambient R

Thermal Resistance, Junction–to–Case R
Storage Junction Temperature Range T
Operating Junction Temperature T

NOTE: ESD data available upon request.

θJA
θJA

stg

Internally Limited W

D

See Figure 13 °C/W

–65 to +150 °C

J

Representative Schematic Diagram

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

Q9

QNPN 2

Q14

QNPN

Q5
QNPN 2

R6

1.0 k

MC7800

R11
15 k

R5

4.5 k

C2

3.0 P

Q13
QNPN

R24
50

LAT 3 A
Q18

Q1

QNPN 6

R7
14 kR31.8 kR85.0 k

Q10

QNPN

Q15

QNPN

Q2
QNPN 4

C3

R22
100

R20
17500

N+

Q4

QNPN

Q16

Diode

35 Vdc

65 °C/W

5.0 °C/W

5.0 °C/W

+150 °C

Q19
QNPN

1.0 P

Q12

QNPN

R16

3340–(3316ACT)

600

R9

3.0 k
SUB

C1
30 P

Q3
QNPN

Q11 2

R21

600

D2
Zener

R19

27.5 k

R10

R14

1.0 k

R12

3.0 k
R25

6.0 k

R26

3.0 k

R13
11660

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.

2

MOTOROLA ANALOG IC DEVICE DATA

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (V

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

7.0 Vdc ≤ Vin ≤ 20 Vdc 4.75 5.0 5.25

8.0 Vdc ≤ Vin ≤ 20 Vdc – – –

Line Regulation (Note 2) Reg

7.5 Vdc ≤ Vin ≤ 20 Vdc, 1.0 A – 0.5 20

8.0 Vdc ≤ Vin ≤ 12 Vdc – 0.8 10

Load Regulation (Note 2) Reg

5.0 mA ≤ IO ≤ 1.0 A – 1.3 25

5.0 mA ≤ IO ≤ 1.5 A (TA = 25°C) - 1.3 25
Quiescent Current I
Quiescent Current Change ∆I

7.0 Vdc ≤ Vin ≤ 25 Vdc – 0.3 1.0

5.0 mA ≤ IO ≤ 1.0 A (TA = 25°C) – 0.08 0.8
Ripple Rejection RR 62 83 – dB

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) V

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

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

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

in

low

to T

[Note 1], unless otherwise noted.)

high

MC7805C/LM340T–5

O
O

line

load

B

B

O

n

O

SC

max

O

4.8 5.0 5.2 Vdc

– 3.2 6.5 mA

– 2.0 – Vdc
– 10 – µV/V

– 0.9 – mΩ
– 0.6 – A

– 2.2 – A
– –0.3 – mV/°C

Vdc

mV

mV

mA

O

ELECTRICAL CHARACTERISTICS (V

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

7.5 Vdc ≤ Vin ≤ 20 Vdc

Line Regulation (Note 2) Reg

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 2) Reg

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

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

NOTES: 1. T

= –40°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

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.

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

in

to T

low

= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX

high

[Note 1], unless otherwise noted.)

high

MC7805AC/LM340AT–5

O
O

line

load

B

B

O

4.9 5.0 5.1 Vdc

4.8 5.0 5.2 Vdc

– 3.2 6.0 mA

– 2.0 – Vdc

mV

mV

mA

MOTOROLA ANALOG IC DEVICE DATA

3

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (continued)

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

low

to T

[Note 1], unless otherwise noted.)

high

MC7805AC/LM340AT–5

Characteristic Symbol Min Typ Max Unit

Output Noise Voltage (TA = 25°C) V

n

– 10 – µV/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 – mΩ
– 0.2 – A

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

NOTES: 1. T

ELECTRICAL CHARACTERISTICS (V

= –40°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

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.

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

in

high

max

O

= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX

low

to T

[Note 1], unless otherwise noted.)

high

– 2.2 – A
– –0.3 – mV/°C

MC7806C

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

5.75 6.0 6.25 Vdc

8.0 Vdc ≤ Vin ≤ 21 Vdc 5.7 6.0 6.3

9.0 Vdc ≤ Vin ≤ 21 Vdc – – –

Line Regulation, TJ = 25°C (Note 2) Reg

line

8.0 Vdc ≤ Vin ≤ 25 Vdc – 0.5 24

9.0 Vdc ≤ Vin ≤ 13 Vdc – 0.8 12

Load Regulation, TJ = 25°C (Note 2) Reg

load

– 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 mA

8.0 Vdc ≤ Vin ≤ 25 Vdc – 0.3 1.3

5.0 mA ≤ IO ≤ 1.0 A – 0.08 0.5
Ripple Rejection RR 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 – Vdc
– 10 – µV/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 – mΩ
– 0.2 – A

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

NOTES: 1. T

= –40°C for MC78XXAC, C T

low

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.

= +125°C for MC78XXAC, C

high

max

O

– 2.2 – A
– –0.3 – mV/°C

O

Vdc

mV

mA

O

4

MOTOROLA ANALOG IC DEVICE DATA

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (V

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

8.6 Vdc ≤ Vin ≤ 21 Vdc

Line Regulation (Note 2) Reg

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 2) Reg

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

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

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

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

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

in

low

to T

[Note 1], unless otherwise noted.)

high

MC7806AC

O
O

line

load

B

B

O

n

O

SC

max

O

5.88 6.0 6.12 Vdc

5.76 6.0 6.24 Vdc

– 3.3 6.0 mA

– 2.0 – Vdc
– 10 – µV/V

– 0.9 – mΩ
– 0.2 – A

– 2.2 – A
– –0.3 – mV/°C

mV

mV

mA

O

ELECTRICAL CHARACTERISTICS (V

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

10.5 Vdc ≤ Vin ≤ 23 Vdc

Line Regulation, TJ = 25°C, (Note 2) Reg

10.5 Vdc ≤ Vin ≤ 25 Vdc – 6.0 32

11 Vdc ≤ Vin ≤ 17 Vdc – 1.7 16
Load Regulation, TJ = 25°C (Note 2) Reg

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

10.5 Vdc ≤ Vin ≤ 25 Vdc – – 1.0

5.0 mA ≤ IO ≤ 1.0 A – – 0.5
Ripple Rejection RR 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

10 Hz ≤ f ≤ 100 kHz

NOTES: 1. T

= –40°C for MC78XXAC, C T

low

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.

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

in

= +125°C for MC78XXAC, C

high

low

to T

[Note 1], unless otherwise noted.)

high

MC7808C

O
O

line

load

B

B

O

n

7.7 8.0 8.3 Vdc

7.6 8.0 8.4 Vdc

– 1.4 35 mV

– 3.3 8.0 mA

– 2.0 – Vdc
– 10 – µV/V

mV

mA

O

MOTOROLA ANALOG IC DEVICE DATA

5

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS

Characteristic Symbol Min Typ Max Unit

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

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

ELECTRICAL CHARACTERISTICS (V

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

10.6 Vdc ≤ Vin ≤ 23 Vdc

Line Regulation (Note 2) Reg

10.6 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA – 6.0 15

11 Vdc ≤ Vin ≤ 17 Vdc, IO = 1.0 A – 1.7 18

10.4 Vdc ≤ Vin ≤ 23 Vdc, TJ = 25°C – 5.0 15

Load Regulation (Note 2) Reg

5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C – 1.4 25

5.0 mA ≤ IO ≤ 1.0 A – 1.0 25

250 mA ≤ IO ≤ 750 mA – 0.22 15
Quiescent Current I
Quiescent Current Change ∆I

11 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA – – 0.8

10.6 Vdc ≤ Vin ≤ 23 Vdc, IO = 1.0 A, TJ = 25°C – – 0.8

5.0 mA ≤ IO ≤ 1.0 A – – 0.5

Ripple Rejection RR 56 62 – dB

11.5 Vdc ≤ Vin ≤ 21.5 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

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

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

NOTES: 1. T

= –40°C for MC78XXAC, C T

low

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.

(continued) (Vin = 14 V, IO = 500 mA, TJ = T

O

SC

max

O

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

in

= +125°C for MC78XXAC, C

high

low

to T

[Note 1], unless otherwise noted.)

high

O
O

line

load

B

B

n

O

SC

max

O

to T

low

O

[Note 1], unless otherwise noted.)

high

MC7808C

– 0.9 – mΩ
– 0.2 – A

– 2.2 – A
– –0.4 – mV/°C

MC7808AC

7.84 8.0 8.16 Vdc

7.7 8.0 8.3 Vdc

– 3.3 6.0 mA

– 2.0 – Vdc
– 10 – µV/V

– 0.9 – mΩ
– 0.2 – A

– 2.2 – A
– –0.4 – mV/°C

mV

mV

mA

O

6

MOTOROLA ANALOG IC DEVICE DATA

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (V

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

11.5 Vdc ≤ Vin ≤ 24 Vdc

Line Regulation, TJ = 25°C (Note 2) Reg

11 Vdc ≤ Vin ≤ 26 Vdc – 6.2 32

11.5 Vdc ≤ Vin ≤ 17 Vdc – 1.8 16

Load Regulation, TJ = 25°C (Note 2) Reg

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

11.5 Vdc ≤ Vin ≤ 26 Vdc – – 1.0

5.0 mA ≤ IO ≤ 1.0 A – – 0.5
Ripple Rejection RR 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

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

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

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

in

low

to T

[Note 1], unless otherwise noted.)

high

MC7809CT

O
O

line

load

B

B

O

n

O

SC

max

O

8.65 9.0 9.35 Vdc

8.55 9.0 9.45 Vdc

– 1.5 35 mV

– 3.4 8.0 mA

– 2.0 – Vdc
– 10 – µV/V

– 1.0 – mΩ
– 0.2 – A

– 2.2 – A
– –0.5 – mV/°C

mV

mA

O

ELECTRICAL CHARACTERISTICS (V

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

14.5 Vdc ≤ Vin ≤ 27 Vdc

Line Regulation, TJ = 25°C (Note 2) Reg

14.5 Vdc ≤ Vin ≤ 30 Vdc – 3.8 24

16 Vdc ≤ Vin ≤ 22 Vdc – 0.3 24

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

Load Regulation, TJ = 25°C (Note 2) Reg

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

14.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C – – 0.7

15 Vdc ≤ Vin ≤ 30 Vdc – – 0.8

5.0 mA ≤ IO ≤ 1.0 A – – 0.5
Ripple Rejection RR 55 60 – dB

15 Vdc ≤ Vin ≤ 25 Vdc, f = 120 Hz

Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI – V

NOTES: 1. T

= –40°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

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.

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

in

high

to T

low

= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX

[Note 1], unless otherwise noted.)

high

MC7812C/LM340T–12

O
O

line

load

B

B

O

11.5 12 12.5 Vdc

11.4 12 12.6 Vdc

– 8.1 60 mV

– 3.4 6.5 mA

– 2.0 – Vdc

mV

mA

MOTOROLA ANALOG IC DEVICE DATA

7

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (continued)

Characteristic Symbol Min Typ Max Unit

Output Noise Voltage (TA = 25°C) V

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

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

ELECTRICAL CHARACTERISTICS (V

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

14.8 Vdc ≤ Vin ≤ 27 Vdc

Line Regulation (Note 2) Reg

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 2) Reg

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

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

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

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

NOTES: 1. T

= –40°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

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.

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

in

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

n

O

SC

max

O

to T

low

= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX

high

[Note 1], unless otherwise noted.)

high

O
O

line

load

B

B

O

n

O

SC

max

O

low

to T

[Note 1], unless otherwise noted.)

high

MC7812C/LM340T–12

– 10 – µV/V

– 1.1 – mΩ
– 0.2 – A

– 2.2 – A
– –0.8 – mV/°C

MC7812AC/LM340AT–12

11.75 12 12.25 Vdc

11.5 12 12.5 Vdc

– 3.4 6.0 mA

– 2.0 – Vdc
– 10 – µV/V

– 1.1 – mΩ
– 0.2 – A

– 2.2 – A
– –0.8 – mV/°C

O

mV

mV

mA

O

8

MOTOROLA ANALOG IC DEVICE DATA

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (V

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

17.5 Vdc ≤ Vin ≤ 30 Vdc

Line Regulation, TJ = 25°C (Note 2) Reg

17.9 Vdc ≤ Vin ≤ 30 Vdc – 8.5 30
20 Vdc ≤ Vin ≤ 26 Vdc – 3.0 28

Load Regulation, TJ = 25°C (Note 2) Reg

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

17.5 Vdc ≤ Vin ≤ 30 Vdc – – 0.8

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

5.0 mA ≤ IO ≤ 1.0 A – – 0.5
Ripple Rejection RR 54 58 – dB

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

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

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

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

in

low

to T

[Note 1], unless otherwise noted.)

high

MC7815C/LM340T–15

O
O

line

load

B

B

O

n

O

SC

max

O

14.4 15 15.6 Vdc

14.25 15 15.75 Vdc

– 1.8 55 mV

– 3.5 6.5 mA

– 2.0 – Vdc
– 10 – µV/V

– 1.2 – mΩ
– 0.2 – A

– 2.2 – A
– –1.0 – mV/°C

mV

mA

O

ELECTRICAL CHARACTERISTICS (V

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

17.9 Vdc ≤ Vin ≤ 30 Vdc

Line Regulation (Note 2) Reg

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 2) Reg

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

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

NOTES: 1. T

= –40°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

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.

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

in

to T

low

= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX

high

[Note 1], unless otherwise noted.)

high

MC7815AC/LM340AT–15

O
O

line

load

B

B

14.7 15 15.3 Vdc

14.4 15 15.6 Vdc

– 3.5 6.0 mA

mV

mV

mA

MOTOROLA ANALOG IC DEVICE DATA

9

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (continued)

Characteristic Symbol Min Typ Max Unit

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

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

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

ELECTRICAL CHARACTERISTICS (V

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

21 Vdc ≤ Vin ≤ 33 Vdc
Line Regulation, (Note 2) Reg

21 Vdc ≤ Vin ≤ 33 Vdc – 9.5 50

24 Vdc ≤ Vin ≤ 30 Vdc – 3.2 25
Load Regulation, (Note 2) Reg

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

21 Vdc ≤ Vin ≤ 33 Vdc – – 1.0

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

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

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

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

NOTES: 1. T

= –40°C for MC78XXAC, C T

low

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.

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

in

= +125°C for MC78XXAC, C

high

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

n

O

SC

max

to T

low

high

O
O

line

load

B

B

n

O

SC

max

to T

low

O

O

[Note 1], unless otherwise noted.)

O

O

[Note 1], unless otherwise noted.)

high

MC7815AC/LM340AT–15

– 2.0 – Vdc
– 10 – µV/V

– 1.2 – mΩ
– 0.2 – A

– 2.2 – A
– –1.0 – mV/°C

MC7818C

17.3 18 18.7 Vdc

17.1 18 18.9 Vdc

– 2.0 55 mV

– 3.5 6.5 mA

– 2.0 – Vdc
– 10 – µV/V

– 1.3 – mΩ
– 0.2 – A

– 2.2 – A
– –1.5 – mV/°C

O

mV

mA

O

10

MOTOROLA ANALOG IC DEVICE DATA

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (V

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

21 Vdc ≤ Vin ≤ 33 Vdc

Line Regulation (Note 2) Reg

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 2) Reg

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

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

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

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

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

in

low

to T

[Note 1], unless otherwise noted.)

high

MC7818AC

O
O

line

load

B

B

O

n

O

SC

max

O

17.64 18 18.36 Vdc

17.3 18 18.7 Vdc

– 3.5 6.0 mA

– 2.0 – Vdc
– 10 – µV/V

– 1.3 – mΩ
– 0.2 – A

– 2.2 – A
– –1.5 – mV/°C

mV

mV

mA

O

ELECTRICAL CHARACTERISTICS (V

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

27 Vdc ≤ Vin ≤ 38 Vdc
Line Regulation, (Note 2) Reg

27 Vdc ≤ Vin ≤ 38 Vdc – 2.7 60

30 Vdc ≤ Vin ≤ 36 Vdc – 2.7 48
Load Regulation, (Note 2) Reg

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

27 Vdc ≤ Vin ≤ 38 Vdc – – 1.0

5.0 mA ≤ IO ≤ 1.0 A – – 0.5

NOTES: 1. T

= –40°C for MC78XXAC, C T

low

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.

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

in

= +125°C for MC78XXAC, C

high

low

to T

[Note 1], unless otherwise noted.)

high

MC7824C

O
O

line

load

B

B

23 24 25 Vdc

22.8 24 25.2 Vdc

– 4.4 65 mV

– 3.6 6.5 mA

mV

mA

MOTOROLA ANALOG IC DEVICE DATA

11

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS

Characteristic Symbol Min Typ Max Unit

Ripple Rejection RR 50 54 – dB

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

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

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

ELECTRICAL CHARACTERISTICS (V

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

27.3 Vdc ≤ Vin ≤ 38 Vdc

Line Regulation (Note 2) Reg

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 2) Reg

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

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

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

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

NOTES: 1. T

= –40°C for MC78XXAC, C T

low

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.

(continued) (Vin = 33 V, IO = 500 mA, TJ = T

n

O

SC

max

O

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

in

= +125°C for MC78XXAC, C

high

low

to T

[Note 1], unless otherwise noted.)

high

O
O

line

load

B

B

n

O

SC

max

O

to T

low

O

O

[Note 1], unless otherwise noted.)

high

MC7824C

– 2.0 – Vdc
– 10 – µV/V

– 1.4 – mΩ
– 0.2 – A

– 2.2 – A
– –2.0 – mV/°C

MC7824AC

23.5 24 24.5 Vdc

23.2 24 25.8 Vdc

– 3.6 6.0 mA

– 2.0 – Vdc
– 10 – µV/V

– 1.4 – mΩ
– 0.2 – A

– 2.2 – A
– –2.0 – mV/°C

O

mV

mV

mA

O

12

MOTOROLA ANALOG IC DEVICE DATA

MC7800, MC7800A, LM340, LM340A Series

Figure 1. Peak Output Current as a Function of

Input/Output Differential Voltage (MC78XXC, AC)

3.0

2.5

2.0

1.5
TJ = 85

1.0

, OUTPUT CURRENT (A)

O

I

0.5

0

6.0 10 15 25 35

4.0 8.0 12 20 30 40
Vin–V

, INPUT/OUPUT VOLTAGE DIFFERENTIAL (V)

out

°C

TJ = 125

TJ = –40

°C

°C

TJ = 0

°C

Figure 3. Ripple Rejection as a Function of

Frequency (MC78XXC, AC)

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

°

C

TA = 25

TJ = 25

°C

Figure 2. Ripple Rejection as a Function of

Output Voltages (MC78XXC, AC)

80

70

PART # V
MC7805C = 10 V

60

MC7806C = 11 V
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

in

VO, OUTPUT VOLTAGE (V)

f = 120 Hz
IO = 20 mA

∆

Vin = 1.0 V(RMS)

Figure 4. Output V oltage as a Function of

Junction T emperature (MC7805C, AC)

Vin = 20 V
IO = 5.0 mA

, OUTPUT VOL TAGE (V)

O

V

5.0

4.9

30

0.01

0.1 10
f, FREQUENCY (kHz)

1.0

Figure 5. Output Impedance as a Function of

Output Voltage (MC78XXC, AC)

10

Ω

5.0

3.0

2.0

1.0

0.5

, OUTPUT IMPEDANCE (m )

0.3

O

Z

0.2

0.1

4.0 8.0 12 16 20 24

f = 120 Hz
IO = 500 mA

µ

F

CL = 0

VO, OUTPUT VOLTAGE (V)

4.8
–60 –20 20 60 100 140 180

TJ, JUNCTION TEMPERATURE (

°

C)

Figure 6. Quiescent Current as a Function of

Temperature (MC78XXC, AC)

6.0

Vin = 10 V

4.0

3.0

2.0

, QUIESCENT CURRENT (mA)

1.0

B

I

0

–75 –50

–25 0 25 50 75 100 125

TJ, JUNCTION TEMPERATURE (°C)

VO = 5.0 V
IL = 20 mA

MOTOROLA ANALOG IC DEVICE DATA

13

MC7800, MC7800A, LM340, LM340A Series

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 circuit will pass, and Output Transistor
Safe–Area Compensation that reduces the output short
circuit 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

Figure 7. Current Regulator Figure 8. Adjustable Output Regulator

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 µF 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.

Input

0.33

µ

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:

IB

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.

MC7805

R

Constant
Current to
Grounded
Load

I

O

5.0 V

IO+

^

3.2 mA over line and load changes.

)

I

B

R

Ω

,

Figure 9. Current Boost Regulator Figure 10. Short Circuit Protection

Source

MJ2955 or Equiv.

0.33 µF

R

Input

Output

0.1 µF

10 k

0.33

MC7805

µ

F

1.0 k

7

6

4

VO = 7.0 V to 20 V

R

SC

VIN = VO

MJ2955

or Equiv.

≥

2.0 V

2

3

MC1741G

0.33 µF

Input

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.

R

Source

Input

R

µ

≥

10 µF

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.

F

1.0

XX = 2 digits of type number indicating voltage.

MC78XX

Output

1.0 µF

BE

14

2N6049

or Equiv.

R

≥

10 µF

The circuit of Figure 9 can be modified to provide supply protection 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.

1.0 µF

XX = 2 digits of type number indicating voltage.

MC78XX

Output

MOTOROLA ANALOG IC DEVICE DATA

MC7800, MC7800A, LM340, LM340A Series

Figure 11. W orst Case Power Dissipation versus

Ambient T emperature (Case 221A)

20

16

12

8.0

, POWER DISSIPATION (W)

D

4.0

P

0

–50 –25 0 25 50 75 100 125 150

θHS = 0°C/W

θHS = 5°C/W

θHS = 15°C/W

No Heatsink

TA, AMBIENT TEMPERATURE (

θJC = 5°C/W
θJA = 65°C/W

T

= 150

J(max)

°

C)

Figure 13. D2P AK Thermal Resistance and Maximum

Power Dissipation versus P.C.B. Copper Length

80

70

°

60

50

JA

JUNCTION-TO-AIR ( C/W)

θ

40

R , THERMAL RESISTANCE

30

Free Air
Mounted
Vertically

010203025155.0

Figure 12. Input Output Differential as a Function

of Junction Temperature (MC78XXC, AC)

2.5
IO = 1.0 A

°

C

, INPUT–OUTPUT VOLTAGE

– VV

P

D(max)

Minimum
Size Pad

R

θ

JA

L, LENGTH OF COPPER (mm)

IO = 500 mA

2.0

IO = 200 mA

1.5

IO = 20 mA

IO = 0 mA

1.0

DIFFERENTIAL (V)

0.5

in out

0

–75 –50 –25 0 25 50 75 100 125

for TA = 50°C

2.0 oz. Copper

L

∆

VO = 2% of V

– – – Extended Curve for MC78XXB

TJ, JUNCTION TEMPERATURE (

3.5

3.0

L

2.5

2.0

1.5

1.0

O

, MAXIMUM POWER DISSIPATION (W)

D

P

°

C)

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 within
specifications.

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola 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 consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
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. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola 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 Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
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
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.

MOTOROLA ANALOG IC DEVICE DATA

Quiescent Current – That part of the input current that is

not delivered to the load.

Output Noise V oltage – 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.

15

MC7800, MC7800A, LM340, LM340A Series

OUTLINE DIMENSIONS

T SUFFIX

PLASTIC PACKAGE

CASE 221A–06

ISSUE Y

NOTES:

SEATING

–T–

PLANE

B

4

Q

123

F

T

C

S

A

U

H

K

Z

L

V

R

J

G

D

N

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

2. CONTROLLING DIMENSION: INCH.

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

INCHES MILLIMETERS

MIN MINMAX MAX

DIM

A
B
C
D
F
G
H

J
K
L
N
Q
R
S
T
U
V
Z

0.570

0.380

0.160

0.025

0.142

0.095

0.110

0.018

0.500

0.045

0.190

0.100

0.080

0.045

0.235

0.000

0.045
–

0.620

0.405

0.190

0.035

0.147

0.105

0.155

0.025

0.562

0.060

0.210

0.120

0.110

0.055

0.255

0.050
–

0.080

14.48

9.66

4.07

0.64

3.61

2.42

2.80

0.46

12.70

1.15

4.83

2.54

2.04

1.15

5.97

0.00

1.15
–

15.75

10.28

4.82

0.88

3.73

2.66

3.93

0.64

14.27

1.52

5.33

3.04

2.79

1.39

6.47

1.27
–

2.04

K

B

F

J

D

0.010 (0.254) T

M

C

A

12 3

G

S

H

D2T SUFFIX

PLASTIC PACKAGE

CASE 936–03

(D2PAK)
ISSUE B

–T–

E

TERMINAL 4

U

V

M

L

P

N

R

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

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