Bay Linear, Inc

2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556

www.baylinear.com

LM2931

Absolute Maximum Rating

Parameter

Power Dissipation

Internally Limited

Lead Temperature ( Soldering 5 seconds )

260

°C

Storage Temperature Range

-65

°C to +150 °C

Operating Junction Temperature

-55

°C to +150 °C

Input Supply Voltage

-20 to +35V

Electrical Characteristics

Parameter

Conditions

MIN

TYP

MAX

UNIT

Output Voltage

(Fixed Version)

-25

Full Operating Temperature

V

Output Voltage (Fixed Version)

100

V

Input Supply Voltage

26

V

Output Voltage Temperature

Coefficient

(Note 1)

50

150

ppm /

° C

Line Regulation (Note 2)

13V

≤ V

0.1

0.4

%

Load Regulation (Note 2)

100

µA ≤ I

0.1

0.3

%

Dropout Voltage (Note 4)

60

300

200

600

mV

Ground Current (Note 5)

100

0.9

8

150

1.5

12

µA

mA

mA

Dropout Ground Current

110

170

µA

Current Limit

160

200

mA

Thermal Regulation (Note 6)

0.05

0.2

% / W

Output Noise,

10Hz to 100KHz

500

350

120

µVrms

Ripple Rejection Ratio

60

dB

8 pin Versions only (LP2951)

Reference Voltage

Over Temperature (Note 7)

1.21

1.185

1.235

1.26

1.285

V

Feedback Pin Bias Current

20

40

ηA

Reference Voltage Temperature

Coefficient

(Note 1)

50

ppm/

°C

Feedback Pin Bias Current

Temperature Coefficient

0.1

ηA/°C

Shutdown Input

Input Logic Voltage

Low (Regulator ON)

High (Regulator OFF)

2

1.3

0.7

V

Shutdown Pin Input Current

30

450

50

600

µA

Regulator Output Current

in Shutdown

(Note 8)

5.0V

≤ V

3.3V

≤ V

2.0V

≤ V

10

20

30

µA