LM2940J 查看數據表（PDF） - Unspecified

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LM2940J

1.25A High Current Low Dropout Voltage Regulator Adjustable

Unspecified 

ABSOLUTE MAXIMUM RATINGS

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

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

Operating Junction Temperature Range

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

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

LM2940/41

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

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

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

ELECTRICAL CHARACTERISTICS (NOTE 1) at IOUT = 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

Units

Min

Max

2.5V Version

Output Voltage (Note 2)

3.3V Version2.

IOUT = 5mA

5mA ≤IOUT≤1.25A, 4.75V≤VIN ≤26V

2.5

2.475

2.525

V

2.5

2.450

2.550

Output Voltage (Note 2)

5.0V Version

IOUT = 5mA

5mA ≤IOUT≤1.25A, 4.75V≤VIN ≤26V

3.3

3.267

3.330

V

3.3

3.234

3.366

Output Voltage (Note 2)

Output Voltage

Accuracy

All Voltage Options

Line Regulation

Load Regulation

∆V°

∆T

IOUT = 5mA

5mA ≤IOUT≤1.25A, 5.5V≤VIN ≤26V

5mA ≤IOUT≤1.0 A

IO = 5mA, (VOUT + 1V) ≤ VIN≤ 26V

VIN = VOUT + 5V, 5mA ≤ IOUT≤ 1 A

(Note 2, 6)

Output Voltage (Note 6)

Temperature Coef.

5.0

4.95

5.05

V

5.0

4.90

5.10

-1

1

%

-2

2

-2.5

2.5

0.06

0.5

%

0.2

1.6

%

20

100

ppm/°C

Dropout Voltage

IO = 5mA

80

150

mV

IO = 1000mA

350

450

IO = 1.25A

400

600

Ground Current

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

240

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

22

IO = 1.25A

35

IGNDDO Ground Pin Current at VIN = 0.5V less than specified VOUT IOUT = 10mA

0.9

Dropout

350

µA

35

mA

70

mA

Current Limit

VOUT = 0V (Note 4)

1.7

1.5

A

Output Noise Voltage

(10Hz to 100kHz)

IL = 100mA

Reference Voltage

Reference Voltage

CL = 10µF

CL = 33µF

(Note 8)`

400

260

1.235

1.223

1.210

1.204

1.247

1.260

1.266

µV RMS

V

Vmax

V

Adjust Pin

Bias Current

Reference Voltage

Temperature

Coefficient

Adjust Pin Bias

Current Temperature

Coefficient

(Note 7)

40

80

nA

120

20

ppm/°C

0.1

nA/°C

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

www.baylinear.com

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