LM7905, LM7912, LM7915
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SNOSBQ7C –JUNE 1999–REVISED MAY 2013
ELECTRICAL CHARACTERISTICS
Conditions unless otherwise noted: IOUT = 500mA, CIN = 2.2μF, COUT = 1μF, 0°C ≤ TJ ≤ +125°C, Power Dissipation ≤ 1.5W.
Part Number
Output Voltage
LM7912C
−12V
LM7915C
−15V
Units
Input Voltage (unless otherwise specified)
−19V
−23V
Symbol
VO
Parameter
Output Voltage
Conditions
Min
Typ
Max
Min
Typ
Max
−15.6
−15.75
TJ = 25°C
−11.5 −12.0 −12.5
−11.4
(−27 ≤ VIN ≤ −14.5)
80
(−30 ≤ VIN ≤ −14.5)
30
(−22 ≤ VIN ≤ −16)
−14.4
−15.0
V
V
5mA ≤ IOUT ≤ 1A,
P ≤ 15W
−12.6 −14.25
(−30 ≤ VIN ≤ −17.5)
V
(1)
ΔVO
Line Regulation
Load Regulation
TJ = 25°C,
5
5
100
mV
V
(−30 ≤ VIN≤ −17.5)
3
3
50
mV
V
(−26 ≤ VIN ≤−20)
(1)
ΔVO
TJ = 25°C,
5mA ≤ IOUT ≤ 1.5A
250mA ≤ IOUT ≤ 750mA
TJ = 25°C
15
5
200
15
5
200
mV
mV
mA
mA
V
75
3
75
3
IQ
Quiescent Current
Quiescent Current
Change
1.5
1.5
ΔIQ
With Line
0.5
0.5
(−30 ≤ VIN ≤ −14.5)
(−30 ≤VIN ≤ −17.5)
0.5
With Load, 5mA ≤ IOUT ≤ 1A
TA = 25°C, 10Hz ≤ f ≤ 100Hz
f = 120 Hz
0.5
mA
μV
dB
Vn
Output Noise Voltage
Ripple Rejection
300
375
70
54
70
54
(−25 ≤ VIN ≤ −15)
(−30 ≤ VIN≤ −17.5)
V
Dropout Voltage
Peak Output Current
Average Temperature
Coefficient of
TJ = 25°C, IOUT = 1A
TJ = 25°C
1.1
2.2
1.1
2.2
V
IOMAX
A
IOUT = 5mA,
−0.8
−1.0
mV/°C
0 C ≤ TJ ≤ 100°C
Output Voltage
(1) Regulation is measured at a constant junction temperature by pulse testing with a low duty cycle. Changes in output voltage due to
heating effects must be taken into account.
Copyright © 1999–2013, Texas Instruments Incorporated
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