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AX3114-PWM Control 2A Step-Down Converter

GENERAL DCRIPTION
    AX3114 consists of step-down switching regulator with PWM control. The devise include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.
    AX3114 provid low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to the duty ratio linearly form 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, the ICs can function as step-down switching regulators. They serve as ideal power supply units for portable devic when coupled with the SOP-8L package,providing such outstanding featur 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.

FEATUR
- Input voltage：4.5V to 23V
- Output voltage：1.222V to VCC
- Duty ratio：0% to 100% PWM control
- Oscillation frequency：380KHz t.
- Current Limit (CL), Enable function.
- External Soft-Start function.
- Thermal Shutdown function.
- Short Circuit Protect (SCP).
- Built-in internal SW P-channel MOS.
- SOP-8L Pb-Free package.