深圳市四海恒通科技有限公司 （非本站正式会员）

AX5302  PWM升压控制IC,外置MOS管

性能描述

     The AX5302 is high efficient PWM step-up controller. Designed to drive an external N-channel MOSFET, Output voltage is programmable with 1.0V of standard voltage supply internal, and using externally connected components, output voltage (FB) can be set up at will.

     The AX5302 can be operated at switching frequencies of 500kHz allowing for easy filtering and low noise, the size of the external components can be reduced. An enable function and thermal shutdown functions are built inside. The soft-start time can be programmed by outside capacitor; the function prevents overshoot at startup.

特点

*    输入电压： 3.0V to 24V

*    输出电压：Define by N-channel MOS

*    占空系数：0% to 85% PWM control

*    固定频率： 500KHz (±20%)

*    通过外部电容可调时间软启动

*   限流由外部电阻调节设定

*    过热关断保护

*  使能端具有开/关功能

*    外置开关N沟道MOS

*    SOP-8L无铅封装