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AX4101

AXElite
Part Number AX4101
Manufacturer AXElite
Description PWM Control 2.5A Step-Down Converter
Published Jul 18, 2014
Detailed Description AX4101 PWM Control 2.5A Step-Down Converter  GENERAL DESCRIPTION AX4101 consists of step-down switching regulator with...
Datasheet PDF File AX4101 PDF File

AX4101
AX4101

Overview
AX4101 PWM Control 2.
5A Step-Down Converter  GENERAL DESCRIPTION AX4101 consists of step-down switching regulator with PWM control.
These devise include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.
AX4101 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.
1/9 Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.
1.
6 Aug.
06, 2010 AX4101  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 AX4101 is SOP-8L; the pin assignment is given by: Name FB Description Feedback pin Power-off pin H：normal operation(Step-down) EN L：Step-down operation stopped (All circuits deactivated) Add an external resistor to set OCSET max switch output current.
VCC IC power supply pin Switch pin...


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