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AX2002

AXElite
Part Number AX2002
Manufacturer AXElite
Description 0.25V Feedback Voltage Step-Down Switching Regulators
Published Jul 17, 2014
Detailed Description AX2002/A 2A, 0.25V Feedback Voltage Step-Down Switching Regulators for LED Driver  GENERAL DESCRIPTION AX2002/A consist...
Datasheet PDF File AX2002 PDF File

AX2002
AX2002

Overview
AX2002/A 2A, 0.
25V Feedback Voltage Step-Down Switching Regulators for LED Driver  GENERAL DESCRIPTION AX2002/A consists of step-down switching regulator with PWM control.
These devise include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.
AX2002/A provides low-ripple power, high efficiency, and excellent transient characteristics.
The PWM control circuit is able to the duty ratio linearly from 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.
VÛm w`R •yÑb€  FEATURES ww fo w.
go tech .
co m - Input voltage：3.
6V to 23V Output voltage：0.
25V to VCC LED Backlight and High Power LED Application Duty ratio：0% to 100% PWM control Oscillation frequency： AX2002: 330KHz typ.
AX2002A: 500KHz typ.
- Enable/Disable function.
Current Limit (CL), Thermal Shutdown and Short Circuit Protections (SCP).
Built-in internal SW P-channel MOS.
No output capacitor is stable.
SOP-8L Pb-Free package.
1/8 Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.
1.
6 Oct.
24, 2011 AX2002/A  BLOCK DIAGRAM SW Oscillator Circuit Reference Voltage + FB Vss Vcc PWM Switched Control Circuit Thermal Shutdown VEN Current Limit EN Comp  PIN ASSIGNMET The package of AX2002/A is SOP-8L; the pin assignment is given by: Name ( Top View ) FB EN Comp Vcc 1 8 7 VÛ...


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