LM2941 datasheet(2/5 Pages) ETC

2 / 5 page

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

www.baylinear.com

LM2940/41

ABSOLUTE MAXIMUM RATINGS

Lead Temp. (Soldering, 5 Seconds).................................260°C

Input Voltage ........................................................26V

Storage Temperature Range.............................. -65° to +150°C

Maximum Output Current....................................3.5A

Operating Junction Temperature Range

Input Supply Voltage (Note1) (Survival)-20V to +60V

LM2940/2941 Control Section.................. -45°C +125°C

LM2940/2941 Power Transistor.................-45°C +150°C

ELECTRICAL CHARACTERISTICS (NOTE 1) at I

OUT = 5mA, V IN =V OUT + 1V, I l = 1000mA, C L = 10µF. Ta=25°C, unless otherwise

specified. The LM2941 is programmed to output 5V and has V SHUTDOWN ≤ 0.6V

PARAMETER

CONDITIONS

Typ

LM2940

Min

Max

Units

2.5V Version

Output Voltage (Note 2)

IOUT = 5mA

5mA

≤IOUT≤1.25A, 4.75V≤VIN ≤26V

2.5

2.475

2.450

2.525

2.550

3.3V Version2.

Output Voltage (Note 2)

IOUT = 5mA

5mA

≤IOUT≤1.25A, 4.75V≤VIN ≤26V

3.3

3.267

3.234

3.330

3.366

5.0V Version

Output Voltage (Note 2)

IOUT = 5mA

5mA

≤IOUT≤1.25A, 5.5V≤VIN ≤26V

5.0

4.95

4.90

5.05

5.10

Output Voltage

Accuracy

5mA

≤IOUT≤1.0 A

-1

-2

-2.5

2.5

All Voltage Options

Line Regulation

IO = 5mA, (VOUT + 1V) ≤ VIN≤ 26V

0.06

0.5

Load Regulation

VIN = VOUT + 5V, 5mA ≤ IOUT≤ 1 A

(Note 2, 6)

0.2

1.6

∆V°

100

ppm/

°C

∆T

Output Voltage (Note 6)

Temperature Coef.

IO = 5mA

150

IO = 1000mA

350

450

Dropout Voltage

IO = 1.25A

400

600

Ground Current

IO = 5mA, VIN = VOUT, +1V

IO = 1000mA, VIN = VOUT, +1V

IO = 1.25A

240

350

µA

IGNDDO Ground Pin Current at

Dropout

VIN = 0.5V less than specified VOUT IOUT = 10mA

0.9

Current Limit

VOUT = 0V (Note 4)

1.7

1.5

Output Noise Voltage

(10Hz to 100kHz)

IL = 100mA

CL = 10µF

CL = 33µF

400

260

µV RMS

Reference Voltage

1.235

1.223

1.210

1.247

1.260

Vmax

Reference Voltage

(Note 8)`

1.204

1.266

Adjust Pin

Bias Current

120

Reference Voltage

Temperature

Coefficient

(Note 7)

ppm/

°C

Adjust Pin Bias

Current Temperature

Coefficient

0.1

nA/

°C

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