LM340, A Series
7
MOTOROLA ANALOG IC DEVICE DATA
LM340–12
ELECTRICAL CHARACTERISTICS
(V
in
= 19 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
Characteristics
Symbol Min Typ Max Unit
Output Voltage (T
J
= +25°C)
I
O
= 5.0 mA to 1.0 A
V
O
11.5 12 12.5 Vdc
Line Regulation (Note 2)
15 Vdc to 27 Vdc
14.6 Vdc to 30 Vdc (T
J
= +25°C)
16 Vdc to 22 Vdc, I
O
= 1.0 A
14.6 Vdc to 27 Vdc, I
O
= 1.0 A (T
J
= +25°C)
Reg
line
–
–
–
–
–
–
–
–
120
120
60
120
mV
Load Regulation (Note 2)
5.0 mA ≤ I
O
≤ 1.0 A
5.0 mA ≤ I
O
≤ 1.5 A (T
J
= +25°C)
250 mA ≤ I
O
≤ 750 mA (T
J
= +25°C)
Reg
load
–
–
–
–
–
–
120
120
60
mV
Output Voltage
14.5 ≤ V
in
≤ 27 Vdc, 5.0 mA ≤ I
O
≤ 1.0 A, P
D
≤ 15 W
V
O
11.4 – 12.6 Vdc
Quiescent Current
I
O
= 1.0 A
T
J
= +25°C
I
B
–
–
–
4.0
8.5
8.0
mA
Quiescent Current Change
14.5 ≤ V
in
≤ 30 Vdc, I
O
= 500 mA
5.0 mA ≤ I
O
≤ 1.0 A, V
in
= 19 V
14.8 ≤ V
in
≤ 27 Vdc, I
O
= 1.0 A
∆I
B
–
–
–
–
–
–
1.0
0.5
1.0
mA
Ripple Rejection
I
O
= 1.0 A (T
J
= +25°C)
RR 55 72 – dB
Dropout Voltage V
I
– V
O
– 1.7 – Vdc
Output Resistance (f = 1.0 kHz) r
O
– 2.0 – mΩ
Short Circuit Current Limit (T
J
= +25°C) I
SC
– 1.1 – A
Output Noise Voltage (T
A
= +25°C)
10 Hz ≤ f ≤ 100 kHz
V
n
– 75 – µV
Average Temperature Coefficient of Output Voltage
I
O
= 5.0 mA
TCV
O
– ±1.5 – mV/°C
Peak Output Current (T
J
= +25°C) I
O
– 2.4 – A
Input Voltage to Maintain Line Regulation (T
J
= +25°C)
I
O
= 1.0 A
14.6 – – Vdc
NOTES: 1. T
low
to T
high
= 0° to +125°C
2. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately.
Pulse testing with low duty cycle is used.
