LTC1044/7660

The LTC1044 is a monolithic CMOS switched capacitor voltage converter which is manufactured using linear technology's enhanced LTCMOS silicon gate process.The LTC1044 provides serveral voltage conversion functions:the input voltage can be inverted (VOUT=-VIN),doubled(VOUT=2VIN),divided(VOUT=VIN/2) or multiplied(VOUT=±nVIN).

Designed to be pin-for-pin and functionally compatible with the popular 7660,the LTC1044 provides significant features and improvements over earlier 7660 designs.These improvements include:full 1.5V to 9V supply operation over the entire operating temperature range,without the need for external protection diodes;2.5 times lower quiescent current for greater power conversion efficiency;and a "boost" function which is available to raise the internal oscillator frequency to optimize performance in specific applications.Although the LTC1044 provides significant design and performance advantages over the earlier 7660 device,it still maintains its compatibility with existing 7660 designs.

The LTC1044/7660 has some absolute maximum ratings.The supply voltage is 9.5V.The input voltage on pin 1,6 and 7 is -3.0VVINV++0.3V.The current into pin6 is 20A.The output short circuit duration (V+5.5V) is continuous.The storage temperature range is -65 to +150.The lead temperature(soldering,10 sec.) is 300.