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MAX619
稳压型、5V电荷泵DC-DC转换器

紧凑的、无电感、小外形、5V电池备份电源,封装尺寸仅有0.1平方英寸


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概述
完整的数据资料 (PDF, 67kB)
英文 Download this datasheet in PDF format下载

The MAX619 step-up charge-pump DC-DC converter delivers a regulated 5V ±4% output at 50mA over temperature. The input voltage range is 2V to 3.6V (two battery cells).

The complete MAX619 circuit fits into less than 0.1in² of board space because it requires only four external capacitors: two 0.22µF flying capacitors, and 10µF capacitors at the input and output.

Low operating supply current (150µA max) and low shutdown supply current (1µA max) make this device ideal for small, portable, and battery-powered applications. When shut down, the load is disconnected from the input.

The MAX619 is available in 8-pin DIP and SO packages.

关键特性   应用/使用
  • Regulated 5V ±4% Charge Pump
  • Output Current Guaranteed over Temperature
    • 20mA (VIN ≥ 2V)
    • 50mA (VIN, ≥ 3V)
  • 2V to 3.6V Input Range
  • No Inductors; Very Low EMI Noise
  • Ultra-Small Application Circuit (0.1in²)
  • Uses Small, Inexpensive Capacitors
  • 500kHz Internal Oscillator
  • Logic-Controlled 1µA Max Shutdown Supply Current
  • Shutdown Disconnects Load from Input
  • 8-Pin DIP and SO Packages

 
  • 5V闪存编程器
  • 电池供电的微处理器系统
  • 紧凑的5V运放电源
  • 本地3.3V至5V转换器
  • 元件数最少的DC-DC转换器
  • 便携式仪表与手持终端
  • 从锂离子备用电池产生稳定的5V电压
  • 远端数据采集系统
  • 低压系统中MOSFET开关的驱动电压
  • 2节电池至5V转换

    Key Specifications:   Charge Pumps
    Part Number Topology VIN (min) (V) VIN (max) (V) Operating Current, ICC (max) (mA) Unadjusted VOUT (V) IOUT (typ) (A) Operating Frequency (kHz) Features Package Operating Temp. Range (°C) Price**
    MAX619  Doubler
    Regulated
    2 3.6 0.17 5 0.05 500
    Shutdown
    Ceramic DIP/8
    PDIP/8
    SOIC/8
    -40 to +85
    0 to +70
    $1.60 @ 1k
    See All Charge Pumps (51)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    图表
    MAX619:典型工作电路
    典型工作电路

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    参考文献: 19-0227; Rev. 2; 1996-05-01
    本页最后一次更新: 2008-03-26



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