Datasheet 78xx Datasheet

Page 1

MC7800, MC7800A, LM340, LM340A Series

Three-Terminal Positive V oltage 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 T ransistor Safe–Area Compensation

• Output Voltage Offered in 2% and 4% Tolerance

• Available in Surface Mount D

Packages

MAXIMUM RATINGS (T

Input Voltage (5.0 – 18 V) V

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

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.

Rating

PAK and Standard 3–Lead Transistor

= 25°C, unless otherwise noted.)

Symbol Value Unit

Internally

θJA θJC

Internally

θJA

stg

35 Vdc

Limited

65 °C/W

5.0 °C/W

Limited

See

Figure

5.0 °C/W

–65 to

+150 +150 °C

°C/W

°C

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TO–220

T SUFFIX

CASE 221A

Heatsink surface

Heatsink surface (shown as terminal 4 in

case outline drawing) is connected to Pin 2.

connected to Pin 2.

D2PAK

D2T SUFFIX

CASE 936

Pin 1. Input

2. Ground

3. Output

STANDARD APPLICATION

Input

Cin*

0.33 µF

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.

MC78XX

Output

CO**

ORDERING INFORMATION

See detailed ordering and shipping information in the package dimensions section on page 16 of this data sheet.

 Semiconductor Components Industries, LLC, 2000

April, 2000 – Rev. 6

DEVICE MARKING INFORMATION

See general marking information in the device marking section on page 18 of this data sheet.

1 Publication Order Number:

MC7800/D

Page 2

R18 100 k

D1 Zener

Q7 QNPN

R17

9.0 k

10.66 k

1.56 k

Q8 QNPN

MC7800, MC7800A, LM340, LM340A Series

Representative Schematic Diagram

LAT Q17

Q6 QNPN

QNPN 2

QNPN

Q14

Q5 QNPN 2

1.0 k

MC7800

R11 15 k

4.5 k

3.0 P

Q13 QNPN

QNPN 6

R24 50

LAT 3 A Q18

QNPN

R7 14 kR31.8 k

Q10

Q15

Q2 QNPN 4

R22 100

R20 17500

N+

QNPN

Q16

Diode

1.0 P

C1 30 P

5.0 k

QNPN

R16 600

3.0 k

Q3 QNPN

Q12

Q19 QNPN

R21 600

3340–(3316ACT)

SUB Q11 2

D2 Zener

R19

27.5 k

R10

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

R29

9.0 k R28

9.0 k

R27

9.0 k

out

5.01

R30 18 k

Sense

This device contains 22 active transistors.

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Page 3

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (V

Characteristic Symbol Min Typ Max Min Typ Max Unit

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

≤ 15 W)

7.0 Vdc ≤ Vin ≤ 20 Vdc – – – 4.75 5.0 5.25

8.0 Vdc ≤ Vin ≤ 20 Vdc 4.75 5.0 5.25 – – –

Line Regulation (Note 2.) Reg

7.5 Vdc ≤ Vin ≤ 20 Vdc, 1.0 A – 5.0 100 – 0.5 20

8.0 Vdc ≤ Vin ≤ 12 Vdc – 1.3 50 – 0.8 10

Load Regulation (Note 2.) Reg

5.0 mA ≤ IO ≤ 1.0 A – 1.3 100 – 1.3 25

5.0 mA ≤ IO ≤ 1.5 A (TA = 25°C) – 0.15 50 – 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) – – 0.5 – 0.08 0.8 Ripple Rejection RR – 68 – 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 Coefficient of

Output Voltage

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

max

TCV

line

load

to T

low

MC7805B MC7805C/LM340T–5

4.8 5.0 5.2 4.8 5.0 5.2 Vdc

– 3.2 8.0 – 3.2 6.5 mA

– 2.0 – – 2.0 – Vdc – 10 – – 10 – µV/V

– 0.9 – – 0.9 – mΩ – 0.2 – – 0.6 – A

– 2.2 – – 2.2 – A – –0.3 – – –0.3 – mV/°C

[Note 1.], unless otherwise noted.)

high

Vdc

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

1. T

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

=*40°C for MC78XXB

separately . Pulse testing with low duty cycle is used.

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

low

high

to T

[Note 1.], unless otherwise noted.)

high

MC7805AC/LM340AT–5

O O

line

load

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

4.9 5.0 5.1 Vdc

4.8 5.0 5.2 Vdc

– 3.2 6.0 mA

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Page 4

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (continued) (V

otherwise noted.)

Characteristic Symbol Min Typ Max Unit

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) 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 Coefficient of Output Voltage TCV

ELECTRICAL CHARACTERISTICS (V

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

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 2.) Reg

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 2.) Reg

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

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

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 Coefficient of Output

Voltage

1. T

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

=*40°C for MC78XXB

separately . Pulse testing with low duty cycle is used.

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

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

low

O O

line

load

max

TCV

5.75 6.0 6.25 5.75 6.0 6.25 Vdc

– 1.3 120 – 1.3 30 mV

– 3.3 8.0 – 3.3 8.0 mA

– 2.0 – – 2.0 – Vdc – 10 – – 10 – µV/V

– 0.9 – – 0.9 – mΩ – 0.2 – – 0.2 – A

– 2.2 – – 2.2 – A – –0.3 – – –0.3 – mV/°C

high

to T

low

max

to T

MC7806B MC7806C

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

[Note 1.], unless otherwise noted.)

high

[Note 1.], unless

high

MC7805AC/LM340A T–5

– 2.0 – Vdc – 10 – µV/V

– 0.9 – mΩ – 0.2 – A

– 2.2 – A – –0.3 – mV/°C

Vdc

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Page 5

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 Coefficient of Output Voltage TCV

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

low

to T

[Note 1.], unless otherwise noted.)

high

MC7806AC

O O

line

load

max

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

ELECTRICAL CHARACTERISTICS (V

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

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 2.) Reg

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 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 – – 0.5

1. T

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

=*40°C for MC78XXB

separately . Pulse testing with low duty cycle is used.

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

O O

line

load

to T

low

MC7808B MC7808C

7.7 8.0 8.3 7.7 8.0 8.3 Vdc

– 1.4 160 – 1.4 35 mV

– 3.3 8.0 – 3.3 8.0 mA

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

high

[Note 1.], unless otherwise noted.)

high

Vdc

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Page 6

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (continued) (V

otherwise noted.)

Characteristic Symbol Min Typ Max Min Typ Max Unit

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

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 Coefficient 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 Coefficient of Output Voltage TCV

1. T

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

=*40°C for MC78XXB

separately . Pulse testing with low duty cycle is used.

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

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

MC7808B MC7808C

max

– 2.0 – – 2.0 – Vdc – 10 – – 10 – µV/V

– 0.9 – – 0.9 – mΩ – 0.2 – – 0.2 – A

– 2.2 – – 2.2 – A – –0.4 – – –0.4 – mV/°C

to T

low

high

O O

line

load

max

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

high

to T

low

[Note 1.], unless otherwise noted.)

7.84 8.0 8.16 Vdc

[Note 1.], unless

high

MC7808AC

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

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Page 7

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (V

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

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

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

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 2.) Reg

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

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

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 Coefficient of Output Voltage TCV

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

O O

line

load

max

to T

low

MC7809BT MC7809CT

8.65 9.0 9.35 8.65 9.0 9.35 Vdc

– 1.5 35 – 1.5 35 mV

– 3.4 8.0 – 3.4 8.0 mA

– 2.0 – – 2.0 – Vdc – 10 – – 10 – µV/V

– 1.0 – – 1.0 – mΩ – 0.2 – – 0.2 – A

– 2.2 – – 2.2 – A – –0.5 – – –0.5 – mV/°C

[Note 1.], unless otherwise noted.)

high

Vdc

ELECTRICAL CHARACTERISTICS (V

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

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 2.) Reg

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 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 – – 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

1. T

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

=*40°C for MC78XXB

separately . Pulse testing with low duty cycle is used.

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

O O

line

load

to T

low

MC7812B MC7812C/LM340T–12

11.5 12 12.5 11.5 12 12.5 Vdc

– 1.6 240 – 8.1 60 mV

– 3.4 8.0 – 3.4 6.5 mA

– 2.0 – – 2.0 – Vdc

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

high

[Note 1.], unless otherwise noted.)

high

Vdc

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Page 8

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (continued) (V

otherwise noted.)

Characteristic Symbol Min Typ Max 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 Coefficient 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 Coefficient of Output Voltage TCV

1. T

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

=*40°C for MC78XXB

separately . Pulse testing with low duty cycle is used.

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

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

MC7812B MC7812C/LM340T–12

max

– 10 – – 10 – µV/V

– 1.1 – – 1.1 – mΩ – 0.2 – – 0.2 – A

– 2.2 – – 2.2 – A – –0.8 – – –0.8 – mV/°C

to T

low

high

O O

line

load

max

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

high

to T

low

[Note 1.], unless otherwise noted.)

11.75 12 12.25 Vdc

[Note 1.], unless

high

MC7812AC/LM340AT–12

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

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Page 9

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (V

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

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 2.) Reg

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 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 – – 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) 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 Coefficient of Output Voltage TCV

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

O O

line

load

max

to T

low

MC7815B MC7815C/LM340T–15

14.4 15 15.6 14.4 15 15.6 Vdc

– 1.8 300 – 1.8 55 mV

– 3.5 8.0 – 3.5 6.5 mA

– 2.0 – – 2.0 – Vdc – 10 – – 10 – µV/V

– 1.2 – – 1.2 – mΩ – 0.2 – – 0.2 – A

– 2.2 – – 2.2 – A – –1.0 – – –1.0 – mV/°C

[Note 1.], unless otherwise noted.)

high

Vdc

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

1. T

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

=*40°C for MC78XXB

separately . Pulse testing with low duty cycle is used.

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

low

high

to T

[Note 1.], unless otherwise noted.)

high

MC7815AC/LM340AT–15

O O

line

load

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

14.7 15 15.3 Vdc

14.4 15 15.6 Vdc

– 3.5 6.0 mA

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Page 10

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (continued) (V

otherwise noted.)

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 Coefficient of Output Voltage TCV

ELECTRICAL CHARACTERISTICS (V

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

21 Vdc ≤ Vin ≤ 33 Vdc – – – 17.1 18 18.9

22 Vdc ≤ Vin ≤ 33 Vdc 17.1 18 18.9 – – – Line Regulation, (Note 2.) Reg

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 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 – – 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) 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 Coefficient of Output Voltage TCV

1. T

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

=*40°C for MC78XXB

separately . Pulse testing with low duty cycle is used.

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

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

max

to T

low

MC7818B MC7818C

O O

line

load

max

17.3 18 18.7 17.3 18 18.7 Vdc

– 2.0 360 – 2.0 55 mV

– 3.5 8.0 – 3.5 6.5 mA

– 2.0 – – 2.0 – Vdc – 10 – – 10 – µV/V

– 1.3 – – 1.3 – mΩ – 0.2 – – 0.2 – A

– 2.2 – – 2.2 – A – –1.5 – – –1.5 – mV/°C

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

high

to T

low

[Note 1.], unless otherwise noted.)

high

[Note 1.], unless

high

MC7815AC/LM340A T–15

– 2.0 – Vdc – 10 – µV/V

– 1.2 – mΩ – 0.2 – A

– 2.2 – A – –1.0 – mV/°C

Vdc

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Page 11

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 Coefficient of Output Voltage TCV

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

low

to T

[Note 1.], unless otherwise noted.)

high

MC7818AC

O O

line

load

max

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

ELECTRICAL CHARACTERISTICS (V

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

27 Vdc ≤ Vin ≤ 38 Vdc – – – 22.8 24 25.2

28 Vdc ≤ Vin ≤ 38 Vdc 22.8 24 25.2 – – – Line Regulation, (Note 2.) Reg

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 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 – – 0.5

1. T

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

=*40°C for MC78XXB

separately . Pulse testing with low duty cycle is used.

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

O O

line

load

to T

low

MC7824B MC7824C

23 24 25 23 24 25 Vdc

– 2.1 480 – 4.4 65 mV

– 3.6 8.0 – 3.6 6.5 mA

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

high

[Note 1.], unless otherwise noted.)

high

Vdc

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Page 12

MC7800, MC7800A, LM340, LM340A Series

ELECTRICAL CHARACTERISTICS (continued) (V

otherwise noted.)

Characteristic Symbol Min Typ Max Min Typ Max Unit

Ripple Rejection RR – 54 – 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 Coefficient 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 Coefficient of Output Voltage TCV

1. T

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T

low

=*40°C for MC78XXB

separately . Pulse testing with low duty cycle is used.

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

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

MC7824B MC7824C

max

– 2.0 – – 2.0 – Vdc – 10 – – 10 – µV/V

– 1.4 – – 1.4 – mΩ – 0.2 – – 0.2 – A

– 2.2 – – 2.2 – A – –2.0 – – –2.0 – mV/°C

to T

low

high

O O

line

load

max

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

high

to T

low

[Note 1.], unless otherwise noted.)

[Note 1.], unless

high

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

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Page 13

3.0

OUTPUT

CURR

(A)

RR,

RIPPL

CTION

(dB)

OUTPUT

IMP

DANC

(

)

MC7800, MC7800A, LM340, LM340A Series

TJ = –40°C

2.5

2.0

1.5

1.0

0.5

4.0 8.0 12 20 30 40

6.0 10 15 25 35 Vin–V

out

TJ = 85°C

TJ = 125°C

, INPUT/OUPUT VOLTAGE DIFFERENTIAL (V)

Figure 1. Peak Output Current as a Function of

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

TJ = 0°C

TJ = 25°C

PART # V MC7805C = 10 V

MC7806C = 11 V MC7808C = 14 V

RR, RIPPLE REJECTION (dB)

MC7812C = 19 V MC7815C = 23 V

MC7818C = 27 V MC7824C = 33 V

4.0 6.0 8.0 10 12 14 16 18 20 22 24

VO, OUTPUT VOLTAGE (V)

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

Figure 2. Ripple Rejection as a Function of

Output Voltages (MC78XXC, AC, B)

MC78XXB, C, AC

EJE E

0.01

Vin = 8.0 V to 18 V IO = 500 mA f = 120 Hz TA = 25°C

0.1 10 f, FREQUENCY (kHz)

1.0

Figure 3. Ripple Rejection as a Function of

Frequency (MC78XXC, AC, B)

5.0

Ω

m E

3.0

2.0

1.0

0.5

0.3

0.2

0.1

4.0 8.0 12 16 20 24

f = 120 Hz IO = 500 mA CL = 0 µF

VO, OUTPUT VOLTAGE (V)

Figure 5. Output Impedance as a Function of

Output Voltage (MC78XXC, AC, B)

5.0

4.9

, OUTPUT VOLTAGE (V)

4.8 –60 –20 20 60 100 140 180

TJ, JUNCTION TEMPERATURE (°C)

Vin = 20 V IO = 5.0 mA

Figure 4. Output Voltage as a Function of

Junction Temperature (MC7805C, AC, B)

6.0

Vin = 10 V VO = 5.0 V IL = 20 mA

, QUIESCENT CURRENT (mA)

4.0

3.0

2.0

1.0

–75 –50

–25 0 25 50 75 100 125

TJ, JUNCTION TEMPERATURE (°C)

Figure 6. Quiescent Current as a Function of

Temperature (MC78XXC, AC, B)

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Page 14

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

Input

0.33 µF

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

Constant Current to Grounded Load

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.

Output

0.1 µF

10 k

Input

0.33 µF

MC7805

1.0 k

MC1741G

5.0 V

IO+

IB ^ 3.2 mA over line and load changes.

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

)

Figure 7. Current Regulator Figure 8. Adjustable Output Regulator

Source

Input

≥ 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.

MJ2955 or Equiv.

0.33 µF

1.0 µF

XX = 2 digits of type number indicating voltage.

MC78XX

Output

1.0 µF

VO = 7.0 V to 20 V

VIN = VO ≥ 2.0 V

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.

Source

Input

≥ 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.

0.33 µF

2N6049

or Equiv.

1.0 µF

XX = 2 digits of type number indicating voltage.

MC78XX

Output

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

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Page 15

MC7800, MC7800A, LM340, LM340A Series

DISSIPATION

(

)

2.5

8.0

4.0

–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 (°C)

θJC = 5°C/W θJA = 65°C/W

= 150°C

J(max)

, INPUT–OUTPUT VOLTAGE

– VV

in out

Figure 11. W orst Case Power Dissipation versus

Ambient T emperature (Case 221A)

Minimum Size Pad

D(max)

θJA

JAθ

JUNCTION-TO-AIR ( C/W)°

R , THERMAL RESISTANCE

Free Air Mounted Vertically

010203025155.0 L, LENGTH OF COPPER (mm)

IO = 1.0 A

IO = 500 mA

2.0 IO = 200 mA

1.5

IO = 20 mA

IO = 0 mA

1.0

DIFFERENTIAL (V)

0.5

–75 –50 –25 0 25 50 75 100 125

∆VO = 2% of V

– – – Extended Curve for MC78XXB

TJ, JUNCTION TEMPERATURE (°C)

Figure 12. Input Output Differential as a Function

of Junction Temperature (MC78XXC, AC, B)

3.5

for TA = 50°C

2.0 oz. Copper L

3.0

2.5

2.0

1.5

1.0

, MAXIMUM POWER DISSIPATION (W)

Figure 13. D2P AK Thermal Resistance and Maximum

Power Dissipation versus P.C.B. Copper Length

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.

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.

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Page 16

MC7800, MC7800A, LM340, LM340A Series

40° to +125°C

+125°C

6.0 V

40° to +125°C

+125°C

8.0 V

40° to +125°C

TO–220

9.0 V

TO–220

+125°C

12 V

40° to +125°C

+125°C

15 V

40° to +125°C

ORDERING INFORMATION

Device Output Voltage Temperature Range Package

MC7805.2CT MC7805ACD2T/R4 MC7805ACT MC7805CD2T/R4 MC7805CT LM340T–5 LM340AT–5 MC7805BD2T/R4 MC7805BT MC7806ACT MC7806CT MC7806BD2T/R4 MC7806BT MC7808ABT MC7808ACT MC7808CD2T/R4 MC7808CT MC7808BD2T/R4 MC7808BT MC7809ACT MC7809CD2T/R4 MC7809CT MC7809BT MC7812ACD2T/R4 MC7812ACT MC7812CD2T/R4 MC7812CT LM340T–12 LM340AT–12 MC7812BD2T/R4 MC7812BT MC7815ACD2T/R4 MC7815ACT MC7815CD2T/R4 MC7815CT LM340T–15 LM340AT–15 MC7815BD2T/R4 MC7815BT

5.0 V

TJ = 0° to +125°C

= 0° to

TJ = 0° to +125°C

TJ = *40° to +125°C

= 0° to

Shipping

Rails

(No Suffix)

TO–220 –

D2PAK 800 Units/Reel

TO–220 –

D2PAK 800 Units/Reel

TO–220 –

D2PAK 800 Units/Reel

TO–220

D2PAK 800 Units/Reel

TO–220

D2PAK 800 Units/Reel

TO–220 –

D2PAK 800 Units/Reel

50 Units/Rail

D2PAK 800 Units/Reel

TO–220 –

D2PAK 800 Units/Reel

TO–220 –

D2PAK 800 Units/Reel

TO–220 –

D2PAK 800 Units/Reel

TO–220 –

D2PAK 800 Units/Reel

TO–220 –

D2PAK 800 Units/Reel

TO–220 –

Tape & Reel

(R4 Suffix)

– – –

–

– –

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Page 17

MC7800, MC7800A, LM340, LM340A Series

18 V

40° to +125°C

ORDERING INFORMATION

Device Output Voltage Temperature Range Package

MC7818ACT MC7818CD2T/R4 MC7818CT MC7818BT MC7824ACT MC7824CD2T MC7824CT MC7824BD2T/R4 MC7824BT

24 V

TJ = 0° to +125°C

TJ = *40° to +125°C

TJ = 0° to +125°C

Shipping

Rails

(No Suffix)

TO–220 –

D2PAK 800 Units/Reel

TO–220

50 Units/Rail

D2PAK

TO–220

D2PAK 800 Units/Reel

TO–220 –

Tape & Reel

(R4 Suffix)

– – –

–

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Page 18

MC7800, MC7800A, LM340, LM340A Series

MARKING DIAGRAMS

MC7800, MC7800A Series

78xxXXT

ALYWW

78xxXXT

ALYWW

MARKING DIAGRAMS

LM340, LM340A Series

340XT–xx

ALYWW

xx = Voltage Option XX = Appropriate Suffix Options A = Assembly Location L = Wafer Lot Y = Year WW = Work Week

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Page 19

MC7800, MC7800A, LM340, LM340A Series

P ACKAGE DIMENSIONS

TO–220

T SUFFIX

CASE 221A–09

ISSUE AA

SEATING

–T–

PLANE

123

R J

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

D2PAK

D2T SUFFIX

CASE 936–03

ISSUE B

0.010 (0.254) T

123

OPTIONAL CHAMFER

NOTES:

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

2. CONTROLLING DIMENSION: INCH.

–T–

TERMINAL 4

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

http://onsemi.com

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MC7800, MC7800A, LM340, LM340A Series

ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes

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