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双输出电荷泵,带有关断

提供双极性输出

产品详情

主要特征

应用/用途

Parametric specs for Charge Pumps
Topology Doubler
Dual Output
Inverter
Unregulated
VIN (V) (min) 1.75
VIN (V) (max) 6
IOUT (A) (typ) 0.035
Unadj. VOUT (V) ±2xVIN
ICC (mA) (max) 1
Switching Frequency (kHz) 185
Oper. Temp. (°C) -40 to +85
Package/Pins QSOP/16
Budgetary
Price (See Notes)
1.93
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简化框图

技术文档

数据资料 双输出电荷泵,带有关断 Mar 01, 1996

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参量

Parametric specs for Charge Pumps
Topology Doubler
Dual Output
Inverter
Unregulated
VIN (V) (min) 1.75
VIN (V) (max) 6
IOUT (A) (typ) 0.035
Unadj. VOUT (V) ±2xVIN
ICC (mA) (max) 1
Switching Frequency (kHz) 185
Oper. Temp. (°C) -40 to +85
Package/Pins QSOP/16
Budgetary
Price (See Notes)
1.93

主要特征

  • Requires Only Four Capacitors
  • Dual Outputs (Positive and Negative)
  • Low Input Voltages: +1.75V to +6.0V
  • 1µA Logic-Controlled Shutdown
  • Selectable Frequencies Allow Optimization of Capacitor Size and Supply Current

应用/用途

  • 数据采集
  • LCD面板表
  • 低成本分割电源,用于低压系统
  • 无线手机中的低电压GaAsFET偏置
  • 用于模拟电路的降压电源
  • 2至4节镍基电池或1节Li+电池降压电源
  • VCO和GaAsFET电源

描述

The MAX864 CMOS, charge-pump, DC-DC voltage converter produces a positive and a negative output from a single positive input, and requires only four capacitors. The charge pump first doubles the input voltage, then inverts the doubled voltage. The input voltage ranges from +1.75V to +6.0V.

The internal oscillator can be pin-programmed from 7kHz to 185kHz, allowing the quiescent current, capacitor size, and switching frequency to be optimized. The 55Ω output impedance permits useful output currents up to 20mA. The MAX864 also has a 1µA logic-controlled shutdown.

The MAX864 comes in a 16-pin QSOP package that uses the same board area as a standard 8-pin SOIC. For more space-sensitive applications, the MAX865 is available in an 8-pin µMAX® package, which uses half the board area of the MAX864.

简化框图

MAX864:典型工作电路 MAX864:典型工作电路 Zoom icon

技术文档

数据资料 双输出电荷泵,带有关断 Mar 01, 1996

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心