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开关电容电压转换器

20mA电荷泵,采用工业标准引脚排列

产品详情

主要特征

Parametric specs for Charge Pumps
Topology Doubler
Inverter
Unregulated
VIN (V) (min) 1.5
VIN (V) (max) 10
IOUT (A) (typ) 0.02
Unadj. VOUT (V) +2xVIN
-VIN
ICC (mA) (max) 0.175
Switching Frequency (kHz) 10
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins CDIP/8
PDIP/8
SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
1.24
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简化框图

Technical Docs

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参量

Parametric specs for Charge Pumps
Topology Doubler
Inverter
Unregulated
VIN (V) (min) 1.5
VIN (V) (max) 10
IOUT (A) (typ) 0.02
Unadj. VOUT (V) +2xVIN
-VIN
ICC (mA) (max) 0.175
Switching Frequency (kHz) 10
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins CDIP/8
PDIP/8
SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
1.24

主要特征

  • Miniature µMAX Package
  • 1.5V to 10.0V Operating Supply Voltage Range
  • 98% Typical Power-Conversion Efficiency
  • Invert, Double, Divide, or Multiply Input Voltages
  • BOOST Pin Increases Switching Frequencies (MAX1044)
  • No-Load Supply Current: 200µA Max at 5V
  • No External Diode Required for Higher-Voltage Operation

应用/用途

  • 从+5V逻辑电源产生-5V电源
  • 数据采集
  • EIA/TIA-232E和EIA/TIA-562电源
  • 手持式仪表(PDA、掌上电脑)
  • 运算放大器电源
  • 面板表
  • 个人通信设备
  • 便携式电话

描述

The MAX1044 and ICL7660 are monolithic, CMOS switched-capacitor voltage converters that invert, double, divide, or multiply a positive input voltage. They are pin compatible with the industry-standard ICL7660 and LTC1044. Operation is guaranteed from 1.5V to 10V with no external diode over the full temperature range. They deliver 10mA with a 0.5V output drop. The MAX1044 has a BOOST pin that raises the oscillator frequency above the audio band and reduces external capacitor size requirements.

The MAX1044/ICL7660 combine low quiescent current and high efficiency. Oscillator control circuitry and four power MOSFET switches are included on-chip. Applications include generating a -5V supply from a +5V logic supply to power analog circuitry. For applications requiring more power, the MAX660 delivers up to 100mA with a voltage drop of less than 0.65V.

简化框图

ICL7660、MAX1044:典型工作电路 ICL7660、MAX1044:典型工作电路 Zoom icon

Technical Docs

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