B340A 查看數據表（PDF） - Linear Technology

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B340A

42V, 2.5A, 2MHz Step-Down Switching Regulator with 2.7µA Quiescent Current

Linear Technology 

LT3975

TYPICAL APPLICATION

1.2V Step-Down Converter

VIN

4.3V TO 27V

(42V TRANSIENT)

OFF ON

10µF

VIN

EN

BOOST

PG

SW

LT3975

DFLS160

3.3V

0.47µF 4.7µH

PDS360

SS

OUT

RT

10nF

SYNC

130k

FB

GND

f = 400kHz

L = IHLP-2525EZ-01

3975 TA08

VOUT

1.2V

2.5A

100µF

1210

RELATED PARTS

PART NUMBER DESCRIPTION

LT3480

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58V with Transient Protection to 80V, 2A (IOUT), 2.4MHz, High

Efficiency Step-Down DC/DC Converter with Burst Mode Operation

LT3971

38V, 1.2A (IOUT), 2MHz, High Efficiency Step-Down

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55V, 1.2A (IOUT), 2MHz, High Efficiency Step-Down

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40V, 350mA (IOUT), 2MHz, High Efficiency Step-Down

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LT3990

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DC/DC Converter with Only 2.5µA of Quiescent Current

COMMENTS

VIN = 3.6V to 38V, Transients to 60V, VOUT(MIN) = 0.78V,

IQ = 70µA, ISD < 1µA, 3mm × 3mm DFN-10, MSOP-10E

VIN = 3.6V to 58V, Transients to 80V, VOUT(MIN) = 0.79V,

IQ = 75µA, ISD < 1µA, 3mm × 4mm DFN-16, MSOP-16E

VIN = 4.2V to 38V, VOUT(MIN) = 1.2V, IQ = 2.8µA, ISD < 1µA,

3mm × 3mm DFN-10, MSOP-10E

VIN = 4.2V to 55V, VOUT(MIN) = 1.2V, IQ = 2.8µA, ISD < 1µA,

3mm × 3mm DFN-10, MSOP-10E

VIN = 4.2V to 40V, VOUT(MIN) = 1.2V, IQ = 2.5µA, ISD < 0.7µA,

2mm × 3mm DFN-10, MSOP-10E

VIN = 4.2V to 62V, VOUT(MIN) = 1.2V, IQ = 2.5µA, ISD < 0.7µA,

3mm × 3mm DFN-10, MSOP-16E

24 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

3975f

LT 0812 • PRINTED IN USA

 LINEAR TECHNOLOGY CORPORATION 2012

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