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ICL7660, MAX1044 開(kāi)關(guān)電容電壓轉(zhuǎn)換器
ICL7660, MAX1044 開(kāi)關(guān)電容電壓轉(zhuǎn)換器
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 關(guān)鍵特性
ICL7660, MAX1044 應(yīng)用/使用
| 從+5V邏輯電源產(chǎn)生-5V電源 | |
| 數(shù)據(jù)采集 | |
| EIA/TIA-232E和EIA/TIA-562電源 | |
| 手持式儀表(PDA、掌上電腦) | |
| 運(yùn)算放大器電源 | |
| 面板表 | |
| 個(gè)人通信設(shè)備 | |
| 便攜式電話 |
ICL7660, MAX1044 應(yīng)用電路
典型工作電路
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