AX3112 Datasheet | AXE

PWM Control 3A Step-Down Converter  GENERAL DESCRIPTION AX3112 consists of step-down switching regulator with PWM control. The device includes a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc. AX3112 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 100%. 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-EP package, providing such outstanding Features as low current consumption. Since this converter can acmodate an input voltage up to 40V, it is also suitable for the operation via an AC adapter.  Features .Data Sheet.net/ - Input voltage：8V to 40V - Adjustable version output voltage range from 3.3V to 38V - Duty ratio：0% to 100% PWM control - Oscillation frequency：100K/350 KHz Enable and auto restart function. Thermal Shutdown function / Internal OVP. Short Circuit Protect (SCP). Built-in internal SW P-channel MOS. SOP-8L-EP Pb-Free package. 1/11 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.1.3 May.23, 2011 Datasheet pdf - http://..co.kr/  BLOCK DIAGRAM  PIN ASSIGNMENT The package of AX3112 is SOP-8L-EP; the pin assignment is given by: Name Description EN/CT ON/OFF and auto restart control VSS GND pin Driver gate clamping pin. The pin VGATE must connect a 0.1u F capacitor to VCC VCC Operating voltage input Switch pin. Connect external inductor SW and diode here SENSE1 Current sense input1 SENSE2 Current sense input2 FB Feedback pin .Data Sheet.net/ ( Top View ) EN/CT VSS VGATE VCC 1 2 3 4 SOP- 8L- EP SW AX3112 8 7 6 5 FB SENSE2 SENSE1 SW  ORDER/MARKING INFORMATION Order Information Top Marking Logo AX3112 X XX X Frequency Package...