Datasheet > HT7722S

HT7722S

更新时间： 2024-11-08 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
29页	1717K
描述
100mA PFM Synchronous Step-up DC/DC Converter

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中文翻译

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数据手册

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HT7722S 数据手册

HT77xxS

100mA PFM Synchronous

Step-up DC/DC Converter

Features

General Description

•ꢀ Lowꢀstart-upꢀvoltage:ꢀ0.7Vꢀ(Typ.)

TheꢀHT77xxSꢀdevicesꢀareꢀaꢀhighꢀefﬁciencyꢀPFMꢀsyn-

chronousꢀstep-upꢀDC-DCꢀconverterꢀseriesꢀwhichꢀareꢀ

designedꢀtoꢀoperateꢀwithꢀbothꢀwireꢀwoundꢀchipꢀpowerꢀ

inductorsꢀandꢀalsoꢀwithꢀmulti-layeredꢀchipꢀpowerꢀ

inductors.ꢀTheꢀdeviceꢀseriesꢀhaveꢀtheꢀadvantagesꢀofꢀ

extremelyꢀlowꢀstart-upꢀvoltageꢀasꢀwellꢀasꢀhighꢀoutputꢀ

voltageꢀaccuracy.ꢀBeingꢀmanufacturedꢀusingꢀCMOSꢀ

technologyꢀensuresꢀultraꢀlowꢀsupplyꢀcurrent.ꢀBecauseꢀ

ofꢀtheirꢀhigherꢀoperatingꢀfrequency,ꢀupꢀtoꢀ500ꢀkHz,ꢀ

theꢀdevicesꢀhaveꢀtheꢀbeneﬁtsꢀofꢀrequiringꢀsmallerꢀout-

lineꢀtypeꢀlowerꢀvalueꢀexternalꢀinductorsꢀandꢀcapaci-

tors.ꢀTheꢀhigherꢀoperatingꢀfrequencyꢀalsoꢀoffersꢀtheꢀ

advantagesꢀofꢀmuchꢀreducedꢀaudioꢀfrequencyꢀnoise.ꢀ

Theꢀdevicesꢀrequireꢀonlyꢀthreeꢀexternalꢀcomponentsꢀ

toꢀprovideꢀaꢀﬁxedꢀoutputꢀvoltageꢀofꢀ1.8V,ꢀ2.2V,ꢀ2.7V,ꢀ

3.0V,ꢀ3.3V,ꢀ3.7Vꢀorꢀ5.0V.

•ꢀ Highꢀefﬁciency:ꢀ1.8Vꢀ

ꢀ 2.2Vꢀupperꢀ80%,ꢀ

≤

OUT

≤

2.7Vꢀ

V ꢀ 5.0Vꢀupperꢀ85%ꢀ(Typ.)

≤

OUT

≤

•ꢀ Highꢀoutputꢀvoltageꢀaccuracy:ꢀ±2.5%

•ꢀ Outputꢀvoltage:ꢀ1.8V,ꢀ2.2V,ꢀ2.7V,ꢀ3.0V,ꢀ3.3V,ꢀ3.7V,ꢀ

5.0V

•ꢀ Outputꢀcurrentꢀupꢀtoꢀ100mA

•ꢀ UltraꢀlowꢀsupplyꢀcurrentꢀI_DD:ꢀ4μAꢀ(Typ.)

•ꢀ Lowꢀrippleꢀandꢀlowꢀnoise

•ꢀ Lowꢀshutdownꢀcurrent:ꢀ0.1μAꢀ(Typ.)

•ꢀ TO92,ꢀSOT89,ꢀSOT23ꢀandꢀSOT23-5ꢀpackage

Applications

•ꢀ Palmtops/PDAs

TheꢀHT77xxSꢀdevicesꢀincludeꢀanꢀinternalꢀoscillator,ꢀ

PFMꢀcontrolꢀcircuit,ꢀdriverꢀtransistor,ꢀreferenceꢀvolt-

ageꢀunitꢀandꢀaꢀhighꢀspeedꢀcomparator.ꢀTheyꢀemployꢀ

pulseꢀfrequencyꢀmodulationꢀtechniques,ꢀtoꢀobtainꢀ

minimumꢀsupplyꢀcurrentꢀandꢀrippleꢀatꢀlightꢀoutputꢀ

loading.ꢀTheseꢀdevicesꢀareꢀavailableꢀinꢀspaceꢀsavingꢀ

TO92,ꢀSOT89,ꢀSOT23ꢀandꢀSOT23-5ꢀpackages.ꢀForꢀ

SOT23-5ꢀpackageꢀtypes,ꢀtheyꢀalsoꢀincludeꢀanꢀinternalꢀ

chipꢀenableꢀfunctionꢀtoꢀreduceꢀpowerꢀconsumptionꢀ

whenꢀinꢀtheꢀshutdownꢀmode.

•ꢀ Portableꢀcommunicators/Smartphones

•ꢀ Cameras/Camcorders

•ꢀ Battery-poweredꢀequipment

Selection Table

Part No.

HT7718S

HT7722S

HT7727S

HT7730S

HT7733S

HT7737S

HT7750S

Output Voltage

1.8V

Tolerance

Package

2.2V

TO92

SOT89

SOT23

SOT23-5

2.7V

3.0V

±2.5%

3.3V

3.7V

5.0V

Rev. 1.00

February 22, 2012

12 3 4 5 6 7...29

中文翻译

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与HT7722S相关器件

型号	品牌	获取价格	描述	数据表
HT7727	HOLTEK	获取价格	PFM Step-up DC/DC Converter
HT7727A	HOLTEK	获取价格	PFM Step-up DC/DC Converter
HT7727A(SOT-23)	HOLTEK	获取价格	Switching Regulator/Controller
HT7727A(TO-92)	HOLTEK	获取价格	Switching Regulator/Controller
HT7727S	HOLTEK	获取价格	100mA PFM Synchronous Step-up DC/DC Converter
HT7727S(SOT-23-5)	HOLTEK	获取价格	Switching Regulator/Controller
HT7727S(SOT-89)	HOLTEK	获取价格	Switching Regulator/Controller
HT7727S(TO-92)	HOLTEK	获取价格	Switching Regulator/Controller
HT7727SA	HOLTEK	获取价格	Switching Regulator,
HT7727SA(SOT-23)	HOLTEK	获取价格	Switching Regulator/Controller, Voltage-mode, 0.2A, 500kHz Switching Freq-Max, CMOS

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