MAX629:28V、低功耗、高压、boost或反相DC-DC转换器

The MAX629 low-power DC-DC converter features an internal N-channel MOSFET switch and programmable current limiting. It is designed to supply positive or negative bias voltages up to ±28V from input voltages in the 0.8V to VOUT range, and can be configured for boost, flyback, and SEPIC topologies. The MAX629's current-limited pulse-frequency-modulation (PFM) control scheme provides high efficiency over a wide range of load conditions. An internal, 0.5A N-channel MOSFET switch reduces the total part count, and a high switching frequency (up to 300kHz) allows for tiny surface-mount magnetics. The MAX629's combination of low supply current, logic-controlled shutdown, small package, and tiny external components makes it an extremely compact and efficient high-voltage biasing solution that's ideal for battery-powered applications. The MAX629 is available in an 8-pin SO package.

关键特性
  • Internal, 500mA, 28V N-Channel Switch (No External FET Required)
  • Generates Positive or Negative Output Voltages
  • 80µA Supply Current
  • 1µA Max Shutdown Current
  • Up to 300kHz Switching Frequency
  • Adjustable Current Limit Allows Use of Small, Inexpensive Inductors
  • 8-Pin SO Package
应用
  • 2节和3节电池供电应用
  • 高效DC-DC升压转换器
  • 掌上电脑
  • LCD正或负偏置发生器
  • 变容调谐二极管偏置
数据手册DataSheet
语言下载文件备注
英文MAX629.pdfRev 1; 06/1997
关键参数
Part NumberVIN
(V)
VIN
(V)
IOUT1
(A)
Output Adjust. MethodDC-DC OutputsAlternate TopologyOper. Freq.
(kHz)
Switch TypePackage/PinsBudgetary
Price
minmaxmaxSee Notes
MAX6292.75.50.5Resistor1
  • Inverting
  • Step-Up
300InternalSOIC(N)/8$3.16 @1k

Part NumberVIN
(V)
VIN
(V)
IOUT1
(A)
Output Adjust. MethodSwitch TypeICC
(mA)
Shutdown Mode Supply Current
(µA)
Shutdown Mode Supply Current
(µA)
DC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxmaxtyptypmaxSee Notes
MAX6292.75.50.5ResistorInternal0.080.0411300SOIC(N)/8$3.16 @1k
开发工具
技术资料
质量和环境数据
相关产品
  • MAX686:DAC控制、boost反相型LCD偏置电源,内置开关
  • MAX1620:数字调节LCD偏置电源
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX629C/D停止供货DICE SALES,;NA引脚;DICE;0°C至+70°C参考数据资料
MAX629ESA停止供货MAX629ESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX629ESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX629ESA+G071生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX629ESA+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX629ESA+TG071生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX629ESA-T停止供货MAX629ESA+TSOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
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