LM3940 datasheet(2/3 Pages) ETC

Part #	LM3940

Description	1.25A High Current Low Dropout

Download	3 Pages

Scroll/Zoom	100%

Manufacturer	ETC [List of Unclassifed Manufacturers]

Direct Link

Logo

2 / 3 page

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

www.baylinear.com

LM3940

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 (Survival) .......... -20V to +60V

LM3940 Control Section........................... -45°C +125°C

LM3940 Power Transistor..........................-45°C +150°C

ELECTRICAL CHARACTERISTICS I

OUT = 5mA, V IN =V OUT + 1V, I l = 1250mA, C L = 10µF. Ta=25°C, unless otherwise specified.

PARAMETER

CONDITIONS

Typ

LM3940

Min

Max

Units

Output Voltage

5mA

≤IL≤1.25A

3.3

3.267

3.234

3.330

3.366

V

Output Voltage

5mA

≤IL≤1.25A

5.0

4.95

4.90

5.05

5.10

V

Line Regulation

IO = 5mA, 4.5V≤VIN ≤5.5V

20

40

mV

Load Regulation

50mA

≤ IOUT≤ 1.25 A

35

50

mV

IO = 5mA

120

180

IO = 1000mA

400

600

Dropout Voltage

IO = 1250mA

500

800

mV

Quiescent Current

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

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

IO = 1.25A

240

22

35

350

35

70

µA

mA

Short Circuit Current

RL = 0

1.7

1.2

A

Current Limit

VOUT = 0V (Note 4)

1.7

1.5

A

Output Noise Voltage

(10Hz to 100kHz)

IL = 100mA

CL = 10µF

CL = 33µF

400

260

µV RMS

BLOCK DIAGRAM

Similar Part No. - LM3940

Manufacturer	Part #	Datasheet	Description
National Semiconductor ...	LM3940	291Kb / 11P	1A Low Dropout Regulator for 5V to 3.3V Conversion
National Semiconductor ...	LM3940	367Kb / 11P	1A Low Dropout Regulator for 5V to 3.3V Conversion
Seme LAB	LM3940	84Kb / 4P	1 AMP LOW DROPOUT REGULATOR FOR
Texas Instruments	LM3940	1Mb / 18P	[Old version datasheet] LM3940 1A Low Dropout Regulator for 5V to 3.3V Conversion
Texas Instruments	LM3940	1Mb / 18P	[Old version datasheet] LM3940 1A Low Dropout Regulator for 5V to 3.3V Conversion

More results

Similar Description - LM3940

Manufacturer	Part #	Datasheet	Description
List of Unclassifed Man...	LM2940	196Kb / 5P	1.25A High Current Low Dropout
Microchip Technology	MIC2940A	2Mb / 24P	1.25A Low Dropout Voltage Regulator 09/14/21
Micrel Semiconductor	MIC2940A	121Kb / 8P	1.25A Low-Dropout Voltage Regulator Preliminary Information
	MIC29150	132Kb / 20P	High-Current Low-Dropout Regulators
	MIC29150	723Kb / 23P	High-Current Low-Dropout Regulators
	MIC29302HWU	575Kb / 10P	High-Current Low-Dropout Regulators
TECH PUBLIC Electronics...	MIC29302WU	3Mb / 8P	High-Current Low Dropout Reaulator
Micrel Semiconductor	MIC29150	714Kb / 23P	High-Current Low-Dropout Regulators
M.S. Kennedy Corporatio...	MSK5115	326Kb / 5P	HIGH CURRENT, LOW DROPOUT VOLTAGE REGULATORS
Anaren Microwave	MSK5102	375Kb / 6P	HIGH CURRENT, LOW DROPOUT VOLTAGE REGULATORS

More results

LM3940 Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers

LM3940 Datasheet(HTML) 2 Page - List of Unclassifed Manufacturers

Similar Part No. - LM3940

Similar Description - LM3940

Html Pages

1 2 3

Datasheet Download

Link URL