Datasheet > LT3470A

LT3470A

更新时间： 2024-11-30 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		二极管稳压器
页数	文件大小	规格书
20页	729K
描述
具集成升压和箝位二极管的微功率降压型稳压器

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LT3470A 数据手册

LT3470A

Micropower Buck Regulator

with Integrated Boost and Catch Diodes

FEATURES

DESCRIPTION

The LT^®3470A is a micropower step-down DC/DC con-

verter that integrates a 440mA power switch, catch diode

and boost diode into low profile 2mm × 3mm DFN

package. The LT3470A combines Burst Mode and

continuous operation to allow the use of tiny inductor

and capacitors while providing a low ripple output to

loads of up to 250mA.

Low Quiescent Current: 35µA at 12V to 3.3V

Integrated Boost and Catch Diodes

Input Range: 4V to 40V

OUT

3.3V at 250mA from 4V to 40V Input

5V at 250mA from 5.7V to 40V Input

Low Output Ripple: <10mV

<1µA in Shutdown Mode

Output Voltage: 1.25V to 16V

With its wide input range of 4V to 40V, the LT3470A can

regulate a wide variety of power sources, from 2-cell Li-Ion

batteries to unregulated wall transformers and lead-acid

batteries. Quiescent current in regulation is just 35µA in

a typical application while a zero current shutdown mode

disconnects the load from the input source, simplifying

power management in battery-powered systems. Fast cur-

rent limiting and hysteretic control protects the LT3470A

and external components against shorted outputs, even

at 40V input. The LT3470A has higher output current and

improved start-up and dropout performance compared

to the LT3470.

Hysteretic Mode Control

Low Ripple Burst Mode^®Operation at Light Loads

Continuous Operation at Higher Loads

Solution Size as Small as 50mm

Low Profile (0.75mm) 2mm × 3mm Thermally

Enhanced 8-Lead DFN Package

AEC-Q100 Qualified for Automotive Applications

APPLICATIONS

Automotive Battery Regulation

Power for Portable Products

All registered trademarks and trademarks are the property of their respective owners

Distributed Supply Regulation

Industrial Supplies

Wall Transformer Regulation

TYPICAL APPLICATION

Efficiency and Power Loss vs Load Current

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Rev. C

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与LT3470A相关器件

型号	品牌	获取价格	描述	数据表
LT3470AEDDB#PBF	Linear	获取价格	LT3470A - Micropower Buck Regulator with Integrated Boost and Catch Diodes; Package: DFN;
LT3470AEDDB#TRMPBF	Linear	获取价格	LT3470A - Micropower Buck Regulator with Integrated Boost and Catch Diodes; Package: DFN;
LT3470AEDDB#TRPBF	Linear	获取价格	LT3470A - Micropower Buck Regulator with Integrated Boost and Catch Diodes; Package: DFN;
LT3470AEDDB-PBF	Linear	获取价格	Micropower Buck Regulator with Integrated Boost and Catch Diodes
LT3470AEDDB-TRPBF	Linear	获取价格	Micropower Buck Regulator with Integrated Boost and Catch Diodes
LT3470AIDDB#PBF	Linear	获取价格	LT3470A - Micropower Buck Regulator with Integrated Boost and Catch Diodes; Package: DFN;
LT3470AIDDB#TRMPBF	Linear	获取价格	LT3470A - Micropower Buck Regulator with Integrated Boost and Catch Diodes; Package: DFN;
LT3470AIDDB#TRPBF	Linear	获取价格	LT3470A - Micropower Buck Regulator with Integrated Boost and Catch Diodes; Package: DFN;
LT3470AIDDB-PBF	Linear	获取价格	Micropower Buck Regulator with Integrated Boost and Catch Diodes
LT3470AIDDB-TRPBF	Linear	获取价格	Micropower Buck Regulator with Integrated Boost and Catch Diodes

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