 GENERAL DESCRIPTION
AX3051/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.
AX3051/A consists of step down switching regulator with PWM control. The device includes a reference voltage source, oscillation circuit, error amplifier and etc.
AX3051/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 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 acco mmodate an input voltage up to 34V.

 FEATURES
- Input Voltage 8V to 34V
- Vout Accuracy (VFB=1V) ±1%/±2%
- CC/CV mode(Constant Curr ent and Constant Voltage)
- Up to 2.8A output current
- ±5%/±15% Current limit Accuracy
- Duty ratio 0% to 90 % PWM control
- Oscillation frequency :
AX3051: 100KHz
AX3051A: 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

 APPLICATIONS
- Car charger
- Portable charger Device.