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

Rev.1.4 Oct.16, 2019

AX3304/A



BLOCK DIAGRAM

OSC.

+

+

Thermal

Shutdown

CONTROL

+

DRIVER

COMP.

GATE

COMP.

Current

limit

+

_

AMP

CURRENT

SOURCE

BIAS

1.23V

REFERENCE

2.5 V

REGULATOR

1.00V

115 mV

+

_

AMP

+

_

AMP

0.4V

SCP

OVP

Line

Compensation

VGATE

VCC

GND

FB

VSENSE

1.10V

START-UP and

Auto restart control

EN/CT

OVP



PIN ASSIGNMENT

The package of AX3304/A is SOP-8L; the pin assignment is given by:

( Top View )

1

2

3

4

8

7

6

5

EN/CT

GND

SOP-8L

VCC

VGATE

FB

OVP

GATE

VSENSE

Name

Description

EN/CT Shutdown and auto restart control pin

GND

GND pin

VGATE

Driver gate clamping pin. The pin

must connect a 0.1uF capacitor to

VIN

VCC

Operating voltage input

GATE

Switch pin. Connect external inductor

and diode here

VSENSE Voltage Sense input

OVP

Over voltage detect pin

FB

Feedback pin



ORDER/MARKING INFORMATION

Order Information

Top Marking

Package Type

S: SOP-8L

AX3304 X X X

Packing

Blank : Tube

A : Taping

Frequency

Blank : 100KHz

A: 300KHz

A

AX3

Logo

Part number

ID code: internal

WW: 01~52

Blank: AX3304

A: AX3304A

Y Y W W X

3 0 4

Year: 18=2018

19=2019

20=2020

21=2021

22=2022

:

45=2045