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

LM7912C

LM7915C

Units

Output Voltage

−12V

−15V

Input Voltage (unless otherwise specified)

−19V

−23V

Symbol

Parameter

Conditions

Min

Typ

Max

Min

Typ

Max

VO

Output Voltage

TJ = 25°C

−11.5

−12.0

−12.5

−14.4

−15.0

−15.6

V

5mA

≤ IOUT ≤ 1A,

−11.4

−12.6

−14.25

−15.75

V

P

≤ 15W

(

−27 ≤ VIN ≤ −14.5)

(

−30 ≤ VIN ≤ −17.5)

V

ΔVO

Line Regulation

TJ = 25°C,

(1)

5

80

5

100

mV

(

−30 ≤ VIN ≤ −14.5)

(

−30 ≤ VIN≤ −17.5)

V

3

30

3

50

mV

(

−22 ≤ VIN ≤ −16)

(

−26 ≤ VIN ≤−20)

V

ΔVO

Load Regulation

TJ = 25°C,

(1)

5mA

≤ IOUT ≤ 1.5A

15

200

15

200

mV

250mA

≤ IOUT ≤ 750mA

5

75

5

75

mV

IQ

Quiescent Current

TJ = 25°C

1.5

3

1.5

3

mA

ΔIQ

Quiescent Current

With Line

0.5

0.5

mA

Change

(

−30 ≤ VIN ≤ −14.5)

(

−30 ≤VIN ≤ −17.5)

V

With Load, 5mA

≤ IOUT ≤ 1A

0.5

0.5

mA

Vn

Output Noise Voltage

TA = 25°C, 10Hz ≤ f ≤ 100Hz

300

375

μV

Ripple Rejection

f = 120 Hz

54

70

54

70

dB

(

−25 ≤ VIN ≤ −15)

(

−30 ≤ VIN≤ −17.5)

V

Dropout Voltage

TJ = 25°C, IOUT = 1A

1.1

1.1

V

IOMAX

Peak Output Current

TJ = 25°C

2.2

2.2

A

Average Temperature

IOUT = 5mA,

−0.8

−1.0

mV/°C

Coefficient of

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.

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