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Axelite Confidential Materials, do not copy or distribute without written consent.

Rev.1.1 Oct.16, 2019

AX3165/A



BLOCK DIAGRAM

Oscillator

START - UP

+

Thermal

Shutdown

Vss

SW

FB

COMP.

VCC

Current

limit

+

_

AMP

COMP.

CURRENT

SOURCE

BIAS

1.23V

REFERENCE

2.5 V

REGULATOR

COMP

VFB

EN

-

PWM

Switched

Control Circuit

VGATE

5uA

SS



PIN ASSIGNMENT

The package of AX3165/A is SOP-8L-EP; the pin assignment is given by:

( Top View )

1

2

3

4

8

7

6

5

FB

VGATE

SOP-8L-EP

VCC

EN

SS

VSS

SW

COMP

SW

Name

Description

EN

ON/OFF Shutdown pin

VSS

GND pin

VGATE

Driver GATE clamping pin. The

pin must connect a 1uF capacitor

to VCC

VCC

IC power supply pin

SW

Switch pin. Connect external

inductor and diode here.

FB

Feedback pin

COMP Compensation pin

SS

Soft-start pin



ORDER/MARKING INFORMATION

Order Information

Top Marking

Package Type

ES: SOP-8L-EP

AX3165 X XX X

Packing

Blank : Tube

A : Taping

Frequency

Blank : 120KHz

A: 250KHz

Logo

Y

AX 3

Part number

ID code:internal

WW: 01~52

1 6 5

Y WW X

X

Blank: AX3165

A: AX3165A

Year: 18=2018

19=2019

20=2020

21=2021

22=2022

:

45=2045