Datasheet > HT7465

HT7465

更新时间： 2024-11-10 11:00:07

品牌	Logo	应用领域
台湾合泰/盛群 - HOLTEK		转换器
页数	文件大小	规格书
11页	926K
描述
2A Step-Down DC to DC Converter

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中文翻译

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数据手册

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HT7465 数据手册

HT7465

2A Step-Down DC to DC Converter

Feature

General Description

•ꢀ Inputꢀvoltageꢀrange:ꢀ4.75Vꢀtoꢀ24V

TheꢀHT7465ꢀisꢀaꢀ2Aꢀhighꢀefﬁciencyꢀstep-downꢀDC-

DCꢀconverterꢀwhichꢀincludesꢀaꢀfullyꢀintegratedꢀMOSꢀ

powerꢀtransistor.ꢀTheꢀdeviceꢀusesꢀaꢀcurrent-modeꢀ

controlꢀoperatingꢀmethodologyꢀandꢀcanꢀoperateꢀoverꢀaꢀ

wideꢀinputꢀvoltageꢀrangeꢀofꢀ4.75Vꢀtoꢀ24Vꢀforꢀwhichꢀitꢀ

canꢀprovideꢀaꢀstableꢀadjustableꢀoutputꢀvoltage.

•ꢀ Variableꢀoutputꢀvoltageꢀrange:ꢀ0.92Vꢀtoꢀ20V

•ꢀ 2Aꢀoutputꢀcurrent

•ꢀ Efﬁciencyꢀupꢀtoꢀ92%

•ꢀ Fixedꢀ380kHzꢀoperatingꢀfrequency

•ꢀ 20 Aꢀshutdownꢀcurrent

Theꢀdeviceꢀincludesꢀoverꢀtemperatureꢀprotection,ꢀ

overꢀcurrentꢀprotectionꢀandꢀunderꢀvoltageꢀlockoutꢀ

protection,ꢀfeaturesꢀwhichꢀcombineꢀtoꢀpreventꢀdeviceꢀ

damageꢀdueꢀtoꢀoverloadꢀconditions.ꢀInꢀitsꢀshutdownꢀ

modeꢀtheꢀregulatorꢀdrawsꢀaꢀmereꢀ20uAꢀofꢀsupplyꢀ

current.

•ꢀ InternalꢀpowerꢀMOSFETꢀswitch

•ꢀ StableꢀoperationꢀusingꢀlowꢀESRꢀceramicꢀcapacitors

•ꢀ Overꢀtemperatureꢀprotection

•ꢀ Cycle-by-cycleꢀoverꢀcurrentꢀprotection

•ꢀ Soft-startꢀfunction

Theꢀdeviceꢀisꢀavailableꢀinꢀ8-pinꢀSOPꢀandꢀ10-pinꢀ

MSOPꢀpackageꢀtypesꢀandꢀprovidesꢀaꢀveryꢀcompactꢀ

systemꢀ solutionꢀ withꢀ aꢀ minimumꢀ ofꢀ externalꢀ

components.

•ꢀ Underꢀvoltageꢀlockoutꢀprotection

•ꢀ 8-pinꢀSOPꢀandꢀ10-pinꢀMSOPꢀpackage

Applications

•ꢀ Batteryꢀchargers

•ꢀ Distributedꢀpowerꢀsystems

•ꢀ LEDꢀpowerꢀsupplies

•ꢀ DSLꢀmodems

•ꢀ Linearꢀregulatorꢀpreꢀpowerꢀprocessing

•ꢀ Set-Top-Boxes,ꢀDVDꢀplayers,ꢀLCDꢀdisplays

Application Circuit

V_IN

Efﬁciency vs Output Current

4.75~24V

10nF

10uF

C₂





R₁+R

R₂



²

C₁

V_OUT= V_FB







VIN

V_OUT

HT7465

GND

B230A

ꢀꢀꢀꢀꢀ

COMP

R₁

R₃

C₄

R₂

10nF

C₃

22uF

C₆

C₅

Rev. 1.00

September 02, 2011

12 3 4 5 6 7...11

中文翻译

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