MAX1725

12V、超低IQ、低压差线性稳压器


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说明

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.
MAX1725、MAX1726:典型工作电路 MAX1725、MAX1726:典型工作电路 放大+

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

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
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
MAX1725 12.512-1.550.320204.5350NoNoNoYes-40 to +85
SOT23/5
$0.88 @1k
MAX1726 
1.8
2.5
3.3
5
--
SOT23/5
$0.86 @1k
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Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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