MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (continued)
(Vin = 19 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7812C/LM340T–12
Characteristic
Output Noise Voltage (TA = 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance f = 1.0 kHz
Short Circuit Current Limit (TA = 25°C)
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Average Temperature Coefficient of Output Voltage
Symbol
Vn
rO
ISC
Imax
TCVO
Min
–
–
–
–
–
Typ
10
1.1
0.2
2.2
–0.8
Max
–
–
–
–
–
Unit
µV/V
O
mΩ
A
A
mV/°C
ELECTRICAL CHARACTERISTICS
(Vin = 19 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7812AC/LM340AT–12
Characteristic
Output Voltage (TJ = 25°C)
Output Voltage (5.0 mA
≤
IO
≤
1.0 A, PD
≤
15 W)
14.8 Vdc
≤
Vin
≤
27 Vdc
Line Regulation (Note 2)
14.8 Vdc
≤
Vin
≤
30 Vdc, IO = 500 mA
16 Vdc
≤
Vin
≤
22 Vdc, IO = 1.0 A
14.5 Vdc
≤
Vin
≤
27 Vdc, TJ = 25°C
Load Regulation (Note 2)
5.0 mA
≤
IO
≤
1.5 A, TJ = 25°C
5.0 mA
≤
IO
≤
1.0 A
Quiescent Current
Quiescent Current Change
15 Vdc
≤
Vin
≤
30 Vdc, IO = 500 mA
14.8 Vdc
≤
Vin
≤
27 Vdc, TJ = 25°C
5.0 mA
≤
IO
≤
1.0 A, TJ = 25°C
Ripple Rejection
15 Vdc
≤
Vin
≤
25 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
Output Noise Voltage (TA = 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance (f = 1.0 kHz)
Short Circuit Current Limit (TA = 25°C)
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Average Temperature Coefficient of Output Voltage
Symbol
VO
VO
Regline
–
–
–
Regload
–
–
IB
∆I
B
–
–
–
RR
VI – VO
Vn
rO
ISC
Imax
TCVO
55
–
–
–
–
–
–
–
–
–
60
2.0
10
1.1
0.2
2.2
–0.8
0.8
0.8
0.5
–
–
–
–
–
–
–
dB
Vdc
µV/V
O
mΩ
A
A
mV/°C
–
–
–
3.4
25
25
6.0
mA
mA
3.8
2.2
6.0
18
20
120
mV
Min
11.75
11.5
Typ
12
12
Max
12.25
12.5
Unit
Vdc
Vdc
mV
NOTES:
1. Tlow = –40°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
Thigh = +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
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.
8
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA, INC ]
