 GENERAL DESCRIPTION

AX3050/A is a wide input voltage, high efficiency Active CC step down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode.

AX3050/A consists of step down switching regulator with PWM control. The device includes a reference voltage source, oscillation circuit, error amplifier and etc.

AX3050/A provides low ripple power, high efficiency, and excellent transient characteri stics. The PWM control circuit is able to the duty ratio linearly forms 0 up to 90%. An over current protection function is built outside that it can set by a resistance. An external compensation is easily to system stable; the low ESR output capacitor can be used.

With the addition of an internal N-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-EP packages, providing such outstanding features as low current consumption. Since this converter can accommodate an input voltage up to 34.

 APPLICATIONS

- Carcharger

- Portable charger Device.

 FEATURES

- Input Voltage：8V to 34V

- Vout Accuracy (VFB=1V) ±2%

- CC/CV mode(Constant Current and Constant Voltage)

- Up to 2.3A output current

- ±5%/±15% Current limit Accuracy

- Duty ratio：0% to 90% PWM control

- Oscillation frequency：

AX3050: 100KHz

AX3050A: 250KHz

- Thermal Shutdown function.

- Short Circuit Protect (SCP).

- Built-in internal LX N-channel MOS.

- Current mode non-synchronous PWM converter

- External current limit setting.

- Over Voltage Protection 5.8V.

- Built in adjustable line-compensation.

- SOP-8L-EP Pb-Free packages

- RoHS and Halogen free compliance.