GENERAL DESCRIPTION
           AX2003/A consists of step-down switching regulator with PWM control. These devise

     include   a   reference   voltage   source,   oscillation circuit,   error   amplifier,   internal   PMOS   and

     etc.

           AX2003/A      provides    low-ripple  power,    high   efficiency,  and   excellent   transient

     characteristics. The PWM control circuit is able to the duty ratio linearly from 0 up to 100%.

    An enable function, an over current protect function and short circuit protect function are

     built inside, and when OCP or SCP happens, the operation frequency will be reduced. Also,

     an internal compensation block is built in to minimum external component count.

           With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode

     connected externally, these ICs can function as step-down switching regulators. They serve

     as ideal power supply units for portable devices when coupled with the SOP-8L package,

     providing such outstanding features as low current consumption. Since this converter can

     accommodate   an   input   voltage   up   to   23V,   it   is  also   suitable   for   the   operation   via   an   AC

     adapter.

 FEATURES
     -   Input voltage  ：3.6V to 23V

     -   Output voltage  ：0.25V to VCC

     -   LED Backlight and High Power LED Application
     -   Duty ratio  ：0% to 100% PWM control

     -   Oscillation frequency  ：

                    AX2003: 330KHz typ.

                    AX2003A: 500KHz typ.

     -   Enable/Disable function.

     -   Current Limit (CL), Thermal Shutdown and Short Circuit Protections (SCP).

     -   Built-in internal SW P-channel MOS.

     -   Low ESR output capacitor (Multi-layer chip capacitor (MLCC)) application.

     -   SOP-8L Pb-Free package.

联系方式：

联系人：李艳丽

电话：0755-33013546

手机：18902476517/13689572852

Q Q: 2355607548

地址：南山科技园南区高新南一道013号赋安科技大厦。

    深圳市福田区鼎城国际大厦613-614.

网址：www.longsemi.com