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Rev.1.6 Sep.24, 2019

AX2005/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

0.2V

EN/SS

-

PWM Switched

Control Circuit

VGATE

5uA

OVP

OVP



PIN ASSIGNMENT

The package of AX2005/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

COMP

VSS

SW

OVP

SW

Name

Description

EN/SS ON/OFF Shutdown and Soft-start 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

OVP

Over-Voltage Sense Input Pin.

Over Voltage is set by out side Resistance