MAX684:3.3V输入、稳压输出5V的电荷泵

每100mA输出只需1µF电容

The MAX682/MAX683/MAX684 charge-pump regulators generate 5V from a 2.7V to 5.5V input. They are specifically designed to serve as high-efficiency auxiliary supplies in applications that demand a compact design. The MAX682, MAX683, and MAX684 deliver 250mA, 100mA, and 50mA output current, respectively. These complete 5V regulators require only one resistor and three external capacitors—no inductors are needed. High switching frequencies (externally adjustable up to 2MHz) and a unique regulation scheme allow the use of capacitors as small as 1µF per 100mA of output current. The MAX683/MAX684 are offered in a space-saving 8-pin µMAX package that is only 1.1mm high, while the MAX682 is available in an 8-pin SO.

关键特性
  • Ultra-Small: 1µF Capacitors per 100mA of Output Current
  • No Inductors Required
  • 1.1mm Height in µMAX Package (MAX683/MAX684)
  • Up to 250mA Output Current (MAX682)
  • Regulated ±4% Output Voltage
  • 50kHz to 2MHz Adjustable Switching Frequency
  • 2.7V to 5.5V Input Voltage
  • 100µA Quiescent Current in Pulse-Skipping Mode
  • 0.1µA Shutdown Current
功能框图
MAX682、MAX683、MAX684:典型工作电路
产品应用
  • 3.3V至5V本地转换应用
  • 3V至5V GSM SIMM卡
  • 备用电池升压转换器
  • 电池供电应用
  • 闪存电源
  • 微型设备
  • PCMCIA卡
关键参数
Part NumberTopologyVIN
(V)
VIN
(V)
ICC
(mA)
Unadj. VOUT
(V)
IOUT
(A)
Oper. Freq.
(kHz)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxmaxtypSee Notes
MAX682Regulated2.75.50.1850.251000-40 to +85
SOIC(N)/8
$2.48 @1k
数据手册DataSheet
英文MAX682-MAX684.pdfRev 1; 08/1998
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX684EUA停止供货MAX1759EUB+µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:否
MAX684EUA+停止供货MAX1759EUB+µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX684EUA+T停止供货MAX1759EUB+µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX684EUA-T停止供货MAX1759EUB+µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:否
MAX682-MAX684.pdf MAX682
MAX682-MAX684.pdf MAX684