MC7800, MC7800A, LM340, LM340A Series

11

MOTOROLA ANALOG IC DEVICE DATA

MC7818AC

Characteristic

Symbol

Min

Typ

Max

Unit

Output Voltage (TJ = 25°C)

VO

17.64

18

18.36

Vdc

Output Voltage (5.0 mA

≤ IO ≤ 1.0 A, PD ≤ 15 W)

VO

17.3

18

18.7

Vdc

21 Vdc

≤ Vin ≤ 33 Vdc

Line Regulation (Note 2)

Regline

mV

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)

Regload

mV

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

IB

–

3.5

6.0

mA

Quiescent Current Change

∆IB

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 – VO

–

2.0

–

Vdc

Output Noise Voltage (TA = 25°C)

Vn

–

10

–

µV/VO

10 Hz

≤ f ≤ 100 kHz

Output Resistance f = 1.0 kHz

rO

–

1.3

–

m

Ω

Short Circuit Current Limit (TA = 25°C)

ISC

–

0.2

–

A

Vin = 35 Vdc

Peak Output Current (TJ = 25°C)

Imax

–

2.2

–

A

Average Temperature Coefficient of Output Voltage

TCVO

–

–1.5

–

mV/

°C

MC7824C

Characteristic

Symbol

Min

Typ

Max

Unit

Output Voltage (TJ = 25°C)

VO

23

24

25

Vdc

Output Voltage (5.0 mA

≤ IO ≤ 1.0 A, PD ≤ 15 W)

VO

22.8

24

25.2

Vdc

27 Vdc

≤ Vin ≤ 38 Vdc

Line Regulation, (Note 2)

Regline

mV

27 Vdc

≤ Vin ≤ 38 Vdc

–

2.7

60

30 Vdc

≤ Vin ≤ 36 Vdc

–

2.7

48

Load Regulation, (Note 2)

Regload

–

4.4

65

mV

5.0 mA

≤ IO ≤ 1.5 A

Quiescent Current

IB

–

3.6

6.5

mA

Quiescent Current Change

∆IB

mA

27 Vdc

≤ Vin ≤ 38 Vdc

–

–

1.0

5.0 mA

≤ IO ≤ 1.0 A

–

–

0.5

NOTES: 1. Tlow = –40°C for MC78XXAC, C

Thigh = +125°C for MC78XXAC, C

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.