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AX4102

AXElite
Part Number AX4102
Manufacturer AXElite
Description PWM Control 3.5A Step-Down Converter
Published Sep 21, 2011
Detailed Description www.DataSheet4U.net AX4102 PWM Control 3.5A Step-Down Converter ™ GENERAL DESCRIPTION AX4102 consists of step-down swi...
Datasheet PDF File AX4102 PDF File

AX4102
AX4102

Overview
www.
DataSheet4U.
net AX4102 PWM Control 3.
5A Step-Down Converter ™ GENERAL DESCRIPTION AX4102 consists of step-down switching regulator with PWM control.
These devise include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.
AX4102 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%.
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, 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 converter can accommodate an input voltage up to 23V, it is also suitable for the operation via an AC adapter.
™ FEATURES - Input voltage：3.
6V to 23V - Output voltage：0.
8V to Vcc - Duty ratio：0% to 100% PWM control - Oscillation frequency：330KHz typ.
Current Limit(CL), Enable function.
Thermal Shutdown function.
Short Circuit Protect (SCP).
Built-in internal SW P-channel MOS.
SOP-8L Pb-Free package.
1/8 Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.
1.
5 Sep.
03, 2009 NãtUFÿmñW3^VÛmw`R•yÑb€g–PQlSø www.
gofotech.
com Tel: 0755-6135 8291/8292 www.
DataSheet4U.
net PWM Control 3.
5A Step-Down Converter AX4102 ™ Block Diagram SW Oscillation Circuit Reference Voltage Vcc PWM - Switched Control Circuit Thermal Shutdown VEN 110uA + - FB Vss EN OCSET ™ PIN ASSIGNMENT The package of AX4102 is SOP-8L; the pin assignment is given by: Name FB ( Top View ) FB EN Ocset Vcc 1 2 AX4102 3 4 SOP–8L 6 5 SW SW 8 7 Vss Vss De...


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