? GENERAL DESCRIPTION

AX3112/A consists of step down switching regulator with PWM control. The device include s a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.

AX3112/A provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to the duty ratio linearly forms 0 up to 100%. With the addition of an internal P-channel Power MOS, a coil, capacitor s, 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-EP package, providing such outstanding features as low current consumpti on. Since this converter can accommodate an input voltage up to 40V, it is also suitable for the operation via an AC adapter.

? FEATURES

- Input voltage 8V to 40V

- Adjustable version output voltage range from 3.3V to 38V

- Duty ratio 0% to 100% PWM control

- Oscillation frequency 100K/350 KHz

- Enable and auto restart function.

- Thermal Shutdown function / Internal OVP.

- Short Circuit Protect (SCP).

- Built-in internal SW P-channel MOS.

- SOP-8L-EP Pb-Free package.

- RoHS and Halogen free compliance