ICL7660, MAX1044 开关电容电压转换器
ICL7660, MAX1044 概述
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.
ICL7660, MAX1044 关键特性
ICL7660, MAX1044 应用/使用
| 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 |
ICL7660, MAX1044 应用电路
典型工作电路