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MAX1697
60mA、SOT23封装、反相电荷泵,带有关断

具有高EMI兼容性的超小型电荷泵


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概述
完整的数据资料 (PDF, 528kB)
英文 Download this datasheet in PDF format下载

The MAX1697 ultra-small, monolithic, CMOS chargepump voltage inverter accepts an input voltage ranging from +1.25V to +5.5V. This device features an ultra-low 12Ω output resistance, permitting loads of up to 60mA with maximum efficiency. The MAX1697 is available with operating frequencies of 12kHz, 35kHz, 125kHz, or 250kHz, allowing optimization of supply current or external component size. Its small external components and micropower shutdown mode make this device ideal for both battery-powered and board-level voltage conversion applications.

Oscillator control circuitry and four power MOSFET switches are included on-chip. Applications include generating a negative supply from a +5V or +3.3V logic supply to power analog circuitry. All versions come in a 6-pin SOT23 package and deliver 60mA.

For applications with lower current requirements, the MAX1719/MAX1720/MAX1721 are pin-compatible SOT23 charge pumps that supply up to 25mA.

关键特性   应用/使用
  • 60mA Output Current
  • Low 12Ω Output Resistance
  • 150µA Supply Current (MAX1697R)
  • Requires Only Two 1µF Capacitors (MAX1697U)
  • Start-Up Current Limited
  • +1.25V to +5.5V Input Voltage Range
  • 0.1µA Logic-Controlled Shutdown
  • Slew-Rate Limited to Reduce EMI
  • 6-Pin SOT23 Package

 
  • 电池供电设备
  • GaAsFET偏置电源
  • 手持终端、PDA
  • 从+5V或+3.3V逻辑电源产生负电源
  • 小型LCD板

    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 RoHS Available Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C) Price**
    MAX1697  Inverter
    Unregulated
    1.25 5.5 0.3 -VIN 0.06 250
    Shutdown
    Yes SOT-23/6 9 -40 to +85 $0.99 @ 1k
    See All Charge Pumps (50)
    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
    MAX1697:典型工作电路
    典型工作电路

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    参考文献: 19-1499; Rev. 2; 2004-06-02
    本页最后一次更新: 2007-06-04




             


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