LTC1539 查看數據表（PDF） - Linear Technology

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LTC1539

Dual High Efficiency/ Low Noise/ Synchronous Step-Down Switching Regulators

Linear Technology 

LTC1538-AUX/LTC1539

TYPICAL APPLICATION

3.3V to 2.9V at 3A Low Noise Linear Regulator

2.9V

ON/OFF

AUXDR

LTC1539

AUXFB

AUXON

6.8nF

47k

22pF

5V

27Ω

Q1

MMBT2907ALTI

100Ω 10Ω

3.3V

ZETEX

FZT849

(SURFACE MOUNT)

2.9V

3A

316k

1%

+ 330µF

×2

221k

1%

1538 TA05

RELATED PARTS

PART NUMBER

LTC1142/LTC1142HV

LTC1148/LTC1148HV

LTC1159

LT®1375/LT1376

DESCRIPTION

Dual High Efficiency Synchronous Step-Down Switching Regulators

High Efficiency Step-Down Switching Regulator Controllers

High Efficiency Step-Down Switching Regulator Controller

1.5A, 500kHz Step-Down Switching Regulators

LTC1430

High Power Step-Down Switching Regulator Controller

LTC1435

Single High Efficiency Low Noise Switching Regulator Controller

LTC1436/LTC1436-PLL/ High Efficiency Low Noise Synchronous Step-Down

LTC1437

Switching Regulator Controllers

LTC1438

Dual, Synchronous Controller with Power-On Reset

and an Extra Comparator

LTC1439/LTC1438X

Dual Synchronous Controller with Power-On Reset, Extra Linear

Controller, Adaptive Power, Synchronization, Auxiliary Regulator and

an Extra Uncommited Comparators

LT1510

Constant-Voltage/Constant-Current Battery Charger

COMMENTS

Dual Synchronous, VIN ≤ 20V

Synchronous, VIN ≤ 20V

Synchronous, VIN ≤ 40V, For Logic Threshold FETs

High Frequency, Small Inductor, High Efficiency

Switchers, 1.5A Switch

High Efficiency 5V to 3.3V Conversion at Up to 15A

16-Pin Narrow SO and SSOP Packages

Full-Featured Single Controllers

Shutdown Current < 30µA

Shutdown Current < 30µA, Power-On Reset Eliminated

1.3A, Li-Ion, NiCd, NiMH, Pb-Acid Charger

32 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 q FAX: (408) 434-0507 q TELEX: 499-3977

LT/GP 0896 7K • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 1996

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