深圳市四海恒通科技有限公司

AX5201  3A,500KHz, PWM DC/DC升压IC

AX5201是AXElite亚瑟莱特科技出品的DC-DC升压恒流大功率LED驱动，AX5201外加一个电感和肖特基二*管，配合AX5201内置的大功率N-MOS，就可以输出*高32V的电压，以及2A的*大LED驱动电流。 

AX5201*高工作频率*500KHz，这可以使得AX5201的效率更高，噪声更小，也可以使用更小的外围元器件。 

AX5201输出电压可通过内部1V的电压基准和其他外围元器件以及FB脚编程设定，AX5201可通过外围电容设定软启动，可实现对AX5201的过流、过热保护以及使能控制。

AX5201性能描述：

     The AX5201 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 AX5201 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.

AX5201特点：

n 输入电压Input voltage：3V to 20V

n 输出电压Output voltage：3.3V to 32V

n 占空系数Duty ratio：0% to 85% PWM control

n 固定频率Oscillation frequency：500KHz.

n Enable and Thermal Shutdown function. 使能端和过热关断保护功能

n Internal Current limit. 内置电流限制调节

n Built-in N-channel MOSFET 内置N沟道MOS

n SOP-8L with Exposed pad Pb-Free package.  SOP-8L裸焊盘无铅封装