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

Rev.1.5 Oct.15, 2019

AX3117



BLOCK DIAGRAM

OSC.

+

+

Thermal

Shutdown

CONTROL

+

DRIVER

COMP.

SW

COMP.

Current

limit

+

_

AMP

CURRENT

SOURCE

BIAS

1.23V

REFERENCE

2.5 V

REGULATOR

SENSE1

1.00V

140 mV

+

_

AMP

+

_

AMP

0.4 V

SCP

OVP

Line

Compensation

VGATE

VCC

GND

FB

SENSE2

5.80V

START-UP and

Auto restart control

EN/CT



PIN ASSIGNMENT

The package of AX3117/A/B is SOP-8L-EP; the pin assignment is given by:

( Top View )

1

2

3

4

8

7

6

5

EN/CT

GND

SOP-8L-EP

VCC

VGATE

FB

SENSE2

SW

SW

SENSE1

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

COMP

Compensation pin

SW

Switch pin. Connect external

inductor and diode here

SENSE1 Current Sense input1

SENSE2 Current Sense input2

FB

Feedback pin



ORDER/MARKING INFORMATION

Order Information

Top Marking

Package Type

ES: SOP-8L-EP

AX3117 X XX X

Packing

Blank : Tube

A : Taping

Frequency/Line Comp.

Blank : 100KHz/320mV

A: 300KHz/320mV

B: 100KHz/150mV

AX 3

Logo

Part number

ID code: internal

WW: 01~52

Y Y W W X

1 1 7

X

Blank: AX3117

A: AX3117A

B: AX3117B

Year: 18=2018

19=2019

20=2020

21=2021

22=2022

:

45=2045