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MAX1605
内置30V开关的LCD偏置电源


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概述
完整的数据资料 (PDF, 248kB)
英文 Download this datasheet in PDF format下载

The MAX1605 boost converter contains a 0.5A internal switch in a tiny 6-pin SOT23 package. The IC operates from a +2.4V to +5.5V supply voltage, but can boost battery voltages as low as 0.8V up to 30V at the output.

The MAX1605 uses a unique control scheme providing the highest efficiency over a wide range of load conditions. An internal 0.5A MOSFET reduces external component count, and a high switching frequency (up to 500kHz) allows for tiny surface-mount components. The current limit can be set to 500mA, 250mA, or 125mA, allowing the user to reduce the output ripple and component size in low-current applications.

Additional features include a low quiescent supply current and a shutdown mode to save power. The MAX1605 is ideal for small LCD panels with low current requirements, but can also be used in other applications. A MAX1605EVKIT evaluation kit (EV kit) is available to help speed up design time.

关键特性   应用/使用
  • Adjustable Output Voltage up to 30V
  • 20mA at 20V from a Single Li+ Battery
  • 88% Efficiency
  • Up to 500kHz Switching Frequency
  • Selectable Inductor Current Limit (125mA, 250mA, or 500mA)
  • 18µA Operating Supply Current
  • 0.1µA Shutdown Current
  • Avaiable in Two Small Packages
    • 6-Pin TDFN
    • 6-Pin SOT23

 
  • 蜂窝电话/无绳电话
  • 手持终端
  • LCD偏置发生器
  • 数字助理
  • 掌上电脑
  • PDA及其它手持设备

    Key Specifications:   Step-Up Switching Regulators
    Part Number VIN (min) (V) VIN (max) (V) Min. VOUT (V) Max. VOUT (V) IOUT (A) IOUT (A) Output Adj. Method Operating Current, ICC (max) (mA) Number of DC-DC Outputs Operating Freq. (kHz) Package Price**
    MAX1605  2.5 5.5 2.5 28 0.02 0.02 Resistor 0.035 1 500 SOT-23/6
    THIN QFN (Dual)/6
    $1.55 @ 1k
    See All Step-Up Switching Regulators (89)
    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
    MAX1605:典型工作电路
    典型工作电路

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    参考文献: 19-1666; Rev. 1; 2003-11-04
    本页最后一次更新: 2007-07-23



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