MAX1759:Buck/boost稳压电荷泵,µMAX封装

业内尺寸最小的100mA buck/boost方案

The MAX1759 is a buck/boost regulating charge pump that generates a regulated output voltage from a single lithium-ion (Li+) cell, or two or three NiMH or alkaline cells for small hand-held portable equipment. The MAX1759 operates over a wide +1.6V to +5.5V input voltage range and generates a fixed 3.3V or adjustable (2.5V to 5.5V) output (Dual Mode™). Maxim's unique charge-pump architecture allows the input voltage to be higher or lower than the regulated output voltage. Despite its high 1.5MHz operating frequency, the MAX1759 maintains low 50µA quiescent supply current. Designed to be an extremely compact buck/boost converter, this device requires only three small ceramic capacitors to build a complete DC-DC converter capable of generating a guaranteed 100mA (min) output current from a +2.5V input. For added flexibility, the MAX1759 also includes an open-drain power-OK (POK) output that signals when the output voltage is in regulation. The MAX1759 is available in a space-saving 10-pin µMAX package that is 1.09mm high and half the size of an 8-pin SO.

关键特性
  • Regulated Output Voltage (Fixed 3.3V or Adjustable 2.5V to 5.5V)
  • 100mA Guaranteed Output Current
  • +1.6V to +5.5V Input Voltage Range
  • Low 50µA Quiescent Supply Current
  • 1µA Shutdown Mode
  • Load Disconnected from Input in Shutdown
  • High 1.5MHz Operating Frequency
  • Uses Small Ceramic Capacitors
  • Short-Circuit Protection and Thermal Shutdown
  • Small 10-Pin µMAX Package
MAX1759:典型工作电路
MAX1759:典型工作电路
应用
  • 备用电池升压转换器
  • Li+电池供电应用
  • 微型设备
  • 转换器
数据手册DataSheet
语言下载文件备注
英文MAX1759.pdfRev 1; 09/2001
关键参数
Part NumberTopologyVIN
(V)
VIN
(V)
ICC
(mA)
Unadj. VOUT
(V)
Adj. VOUT
(V)
Adj. VOUT
(V)
IOUT
(A)
Oper. Freq.
(kHz)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxmaxminmaxtypSee Notes
MAX1759Regulated1.65.50.183.32.55.50.11500-40 to +85µMAX/10$2.72 @1k
技术资料
质量和环境数据
相关产品
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  • MAX710:3.3V/5V或可调、升/降压型DC-DC转换器
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订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1759EUB最后一次购买µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:否
MAX1759EUB+生产中µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX1759EUB+T生产中µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX1759EUB-T停止供货MAX1759EUB+TµMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:否
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