MAX1725:12V、超低IQ、低压差线性稳压器

The MAX1725/MAX1726 are ultra-low supply current, low-dropout linear regulators intended for low-power applications that demand the longest possible battery life. Unlike inferior PNP-based designs, the MAX1725/MAX1726s' PMOS pass elements maintain an ultra-low 2µA supply current throughout their entire operating range and in dropout. Despite their ultra-low power consumption, the MAX1725/MAX1726 have tight output accuracy (1.5%) and require just 1µF output capacitance to achieve good load-transient response. These regulators have a wide input voltage range (+2.5V to +12V), making them excellent choices for systems powered from two lithium-ion (Li+) cells and 9V batteries. Other features include reverse-battery protection, short-circuit protection, and thermal protection. The MAX1725 provides an adjustable 1.5V to 5V output using an external resistor-divider. The MAX1726 provides factory preset 1.8V, 2.5V, 3.3V, or 5V output voltages (see the Ordering Information in the full data sheet). Both devices are available in a tiny 5-pin SOT23 package.

关键特性
  • 2µA Supply Current
  • Reverse-Battery Protection
  • +2.5V to +12V Input Voltage Range
  • Fixed 1.8V, 2.5V, 3.3V, and 5V Output Voltages (MAX1726)
  • Adjustable 1.5V to 5V Output Voltages (MAX1725)
  • 20mA Guaranteed Output Current
  • 1.5% Output Voltage Accuracy
  • Small 1µF Output Capacitor
  • Short-Circuit Protection
  • Thermal Protection
  • Tiny 5-Pin SOT23 Package
MAX1725、MAX1726:典型工作电路
MAX1725、MAX1726:典型工作电路
应用
  • 电池供电报警
  • 工业控制系统
  • 微控制器电源
  • PDA与手持终端
  • 实时时钟备用电源
  • 远端发送器
  • 智能电池组/充电器
  • 烟雾检测器
数据手册DataSheet
语言下载文件备注
英文MAX1725-MAX1726.pdfRev 2; 12/2012
关键参数
Part NumberRegulatorsVIN
(V)
VIN
(V)
Preset VOUT
(V)
Adj. VOUT
(V)
Adj. VOUT
(V)
VDROPOUT @Rated ILOAD
(V)
Rated ILOAD
(mA)
Rated ILOAD
(mA)
ICC
(µA)
Output Voltage Noise
(µV RMS)
Ref. BypassLow Batt./ Pwr. Fail OutWatchdogReverse Batt. Protect.Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxminmaxtypmaxtypSee Notes
MAX172512.512-1.550.320204.5350NoNoNoYes-40 to +85SOT/5$0.82 @1k
MAX1726
  • 1.8
  • 2.5
  • 3.3
  • 5
--SOT/5
技术资料
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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
MAX1725EUK+T生产中SOT,;5引脚;9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1725EUK-T停止供货MAX1725EUK+TSOT,;5引脚;9mm²-40°C至+85°CRoHS/无铅:否
MAX1725-MAX1726.pdf MAX1726
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典型工作电路 MAX1726