AX3131 Datasheet PDF

Axelite AX3131

AX3131 is build out soft start function that prevent inrush current and overshooting. With the addition of an internal P-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 with exposed pad package, providing such outstanding features as low current consumption.

Part No.	AX3131
Datasheet	AX3131 Download
Manufacturer	Axelite
Description	PWM Control 3A Step-Down Converter
Buy	Stock & Price

GENERAL DESCRIPTION

AX3131 consists of step-down switching regulator with PWM control. These devise include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc. AX3131 provides 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%. The converter frequency can be set by outside resistance. The wide range is from 200K to 1.3MHz. A shutdown switch, over current protect and short circuit protect functions are built inside, and when SCP happens, the operation frequency will be reduced to 150K. Also, an external compensation block is built in to good stable system. Since this converter can accommodate an input voltage up to 23V, it is also suitable for the operation via an AC adapter. 

FEATURES

Input voltage 4.5V to 23V Output voltage VFB to VCC Duty ratio 0% to 100% PWM control Oscillation frequency 200K~1.3MHz (Outside resistance setting) Current Limit (CL), Short Current Protection (SCP) External Soft-Start function and Shutdown Function.