The MAX1817 is a compact, high-efficiency, dual-output step-up converter for portable devices that provides both the main logic supply and the LCD bias. The device operates from an input voltage of +1.5V to +5.5V, allowing the use of 2- or 3-cell alkaline batteries, or 1-cell lithium-ion (Li+) batteries.

The MAX1817's main regulator supplies 125mA at either a preset 3.3V or an adjustable 2.5V to 5.5V output voltage with up to 88% efficiency. A 0.1µA shutdown state also minimizes battery drain. The MAX1817's secondary step-up converter provides the LCD bias voltage and is adjustable up to +28V.

Other features include a fast switching frequency to reduce the size of external components and a low quiescent current to maximize battery life. Both outputs can be independently shut down for improved flexibility.

The MAX1817 is supplied in a compact 10-pin µMAX package. The MAX1817 evaluation kit (MAX1817EVKIT) is available to speed up design.
MAX1817:典型工作电路 MAX1817:典型工作电路 放大+


  • Dual Step-Up Converter in a Tiny 10-Pin µMAX Package
  • Main Output
    • Up to 125mA Load Current
    • Fixed 3.3V or Adjustable 2.5V to 5.5V
    • Up to 88% Efficiency
    • Internal Switch
  • LCD Output
    • Up to 28V for LCD Bias
    • Internal Switch
  • Input Voltage Range +1.5V to +5.5V
  • Minimal External Components Required
  • 0.1µA Logic-Controlled Shutdown
  • Low 15µA Quiescent Supply Current


  • GPS接收机
  • MP3播放器
  • 数字助理/转换器
  • PDA

请查看具体的参数规格 Multifunction PMICs (83)

Part NumberVIN
# Step-Up Outputs
MAX1817 1.55.52

Pricing Notes:
申请可靠性报告: MAX1817 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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评估板2427MAX1817EVKIT MAX1817评估板