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Rev.2.1 Oct.08, 2019

AX3102



BLOCK DIAGRAM

Vcc

Oscillation

Circuit

Reference Voltage

Source with Soft Start

+

-

Vss

VEN

EN

OCSET

FB

SW

Thermal

Shutdown

110uA

-

PWM Switched

Control Circuit



PIN ASSIGNMENT

The package of AX3102 is SOP-8L; the pin assignment is given by:

( Top View )

1

2

3

4

8

7

6

5

FB

Ocset

SOP–8L

Vcc

EN

Vss

Vss

SW

SW

Name

Description

FB

Feedback pin

EN

Power-off pin

H：normal operation(Step-down)

L：Step-down operation stopped

(All circuits deactivated)

OCSET

Add an external resistor to set

max switch output current.

VCC

IC power supply pin

SW

Switch pin. Connect external

inductor & diode here.

VSS

GND pin



ORDER/MARKING INFORMATION

Order Information

Top Marking

Package Type

S: SOP-8L

AX3102 X X X

Packing

Blank : Tube

A : Taping

Frequency

Blank : 330Khz

Logo

Y

AX 3

Part number

ID code:internal

WW: 01~52

Year: 18=2018

19=2019

20=2020

21=2021

22=2022

1 0 2

Y WW X

:

45=2045