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Rev.2.0 Oct.08, 2019

AX3101



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 AX3101 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

VSS

GND pin

SW

Switch pin. Connect external inductor

and diode here.