AX3164 is a step-down switching PWM controller. These devise include a reference voltage source, oscillation circuit, error amplifier. External P-channel MOSFET is need in application circuit for switching driver.
AX3164 controller provides low-ripple power, high efficiency, and excellent transient characteristics control. The AX3164 PWM control circuit is able to the duty ratio linearly form 0 up to 100%. This controller is build out soft start function that prevents overshoot and inrush current at startup. An over current protect function and short circuit protect function are determined external VCC-SENSE resistor, and when OCP or SCP happens, the operation frequency will be reduced. An external compensation is easily to system stable; the low ESR output capacitor can be used.
With the addition of a P-channel Power MOSFET, 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 controller can accommodate an input voltage up to 58V, it is also suitable for the operation via an AC adapter.
- Input voltage：10V to 58V
- Output voltage：3.3V to 56V
- Duty ratio：0% to 100% PWM control
- Soft-Start function
- Current limit, Short Circuit Protect (SCP) protection and thermal Shutdown protection
- External SW P-channel MOSFET.
- SOP-8L Pb-Free package.