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AX4103

AXElite
Part Number AX4103
Manufacturer AXElite
Description PWM Control 3.5A Step-Down Converter
Published Jul 18, 2014
Detailed Description AX4103 PWM Control 3.5A Step-Down Converter  GENERAL DESCRIPTION AX4103 consists of step-down switching regulator with...
Datasheet PDF File AX4103 PDF File

AX4103
AX4103

Overview
AX4103 PWM Control 3.
5A Step-Down Converter  GENERAL DESCRIPTION AX4103 consists of step-down switching regulator with PWM control.
These devise include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.
AX4103 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.
 FEATURES - Input voltage：4.
5V 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.
1 Aug.
06, 2010 AX4103  BLOCK DIAGRAM SW Oscillation Circuit Reference Voltage VCC PWM - Switched Control Circuit Thermal Shutdown VEN + - Current Limit FB VSS EN NC  PIN ASSIGNMENT The package of AX4103 is SOP-8L; the pin assignment is given by: Name FB EN NC VCC SW VSS  ORDER/MARKING INFORMATION Order Information Top Marking Logo Description Feedback pin Power-off pin H：normal operation(Step-down) L：Step-down operation stopped (All circuits deactivated) No Connect pin IC power supply pin Switch pin.
Connect external inductor and diode here.
GND pin AX4103 X X X Frequency Package Type Pac...


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