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HT7718S PDF预览

HT7718S

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

HT7718S 技术参数

生命周期:Active包装说明:TO-92, SIP3,.1,50
Reach Compliance Code:unknown风险等级:5.73
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制技术:PULSE FREQUENCY MODULATION
最大输入电压:6 V标称输入电压:1.08 V
JESD-30 代码:O-XBCY-T3功能数量:1
端子数量:3最高工作温度:85 °C
最低工作温度:-40 °C最大输出电压:1.84 V
最小输出电压:1.75 V标称输出电压:1.8 V
封装主体材料:UNSPECIFIED封装代码:TO-92
封装等效代码:SIP3,.1,50封装形状:ROUND
封装形式:CYLINDRICAL最大供电电流 (Isup):0.007 mA
表面贴装:NO切换器配置:BOOST
技术:CMOS温度等级:INDUSTRIAL
端子形式:THROUGH-HOLE端子位置:BOTTOM
Base Number Matches:1

HT7718S 数据手册

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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  
V
ꢀ 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  
•ꢀ UltraꢀlowꢀsupplyꢀcurrentꢀIDD:ꢀ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  
1
February 22, 2012  

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