LM7905_13 datasheet(2/13 Pages) TI1

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LM7905, LM7912, LM7915

SNOSBQ7C – JUNE 1999 – REVISED MAY 2013

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

ABSOLUTE MAXIMUM RATINGS

(1)

Input Voltage

(Vo = −5V)

−25V

(Vo = −12V and −15V)

−35V

Input-Output Differential

(Vo = −5V)

25V

(Vo = −12V and −15V)

30V

Power Dissipation (2)

Internally Limited

Operating Junction Temperature Range

0°C to +125°C

Storage Temperature Range

−65°C to +150°C

Lead Temperature (Soldering, 10 sec.)

230°C

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is intended to be functional, but do not ensure Specific Performance limits. For ensured specifications and test

conditions, see the Electrical Characteristics.

(2)

Refer to DESIGN CONSIDERATIONS for details.

ELECTRICAL CHARACTERISTICS

Conditions unless otherwise noted: IOUT = 500mA, CIN = 2.2μF, COUT = 1μF, 0°C ≤ TJ ≤ +125°C, Power Dissipation ≤ 1.5W.

Part Number

LM7905C

Units

Output Voltage

−5V

Input Voltage (unless otherwise specified)

−10V

Symbol

Parameter

Conditions

Min

Typ

Max

VO

Output Voltage

TJ = 25°C

−4.8

−5.0

−5.2

V

5mA

≤ IOUT ≤ 1A,

−4.75

−5.25

V

P

≤ 15W

(

−20 ≤ VIN ≤ −7)

V

ΔVO

Line Regulation

TJ = 25°C,

(1)

8

50

mV

(

−25 ≤ VIN ≤ −7)

V

2

15

mV

(

−12 ≤ VIN ≤ −8)

V

ΔVO

Load Regulation

TJ = 25°C,

(1)

5mA

≤ IOUT ≤ 1.5A

15

100

mV

250mA

≤ IOUT ≤ 750mA

5

50

mV

IQ

Quiescent Current

TJ = 25°C

1

2

mA

ΔIQ

Quiescent Current

With Line

0.5

mA

Change

(

−25 ≤ VIN ≤ −7)

V

With Load, 5mA

≤ IOUT ≤ 1A

0.5

mA

Vn

Output Noise Voltage

TA = 25°C, 10Hz ≤ f ≤ 100Hz

125

μV

Ripple Rejection

f = 120Hz

54

66

dB

(

−18 ≤ VIN ≤ −8)

V

Dropout Voltage

TJ = 25°C, IOUT = 1A

1.1

V

IOMAX

Peak Output Current

TJ = 25°C

2.2

A

Average Temperature

IOUT = 5mA,

0.4

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.

2

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