深圳市四海恒通科技有限公司 （非本站正式会员）

AX5203   PWM DC/DC升压IC

性能描述

      The AX5203 is high efficient step-up DC/DC converter. Large output current is possible having a built in internal N channel MOSFET, and using an external coil and diode.

      The AX5203 can be operated at switching frequencies of 500 kHz allowing for easy filtering and low noise, the size of the external components can be reduced.

      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 soft-start time can be programmed by outside capacitor; the function prevents overshoot at startup. Build inside Current limit, Thermal Shutdown and enable functions.

AX5203特点

n  输入电压：4.5V to 23V

n  输出电压：5 V to 68V

n  占空系数：0% to 85% PWM control

n  固定频率 ：500KHz.

n  使能端具有开/关和过热保护功能

n  内置电流限制调节

n  内置N沟道MOSFET

n  SOP-8L裸焊盘无铅封装