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

Rev1.5 Dec.11, 2019

AX3075/B

Name

Description

VIN

Power Supply Input. Bypass this pin with a 1uF ceramic capacitor to GND,

placed as close to the IC as possible.

COMP

Error Amplifier Output. This is the output of the error amplifier (EA) and the

non-inverting input of the PWM comparator. Use this pin in combination with the

FB pin to compensate the voltage control feedback loop of the converter. Pulling

COMP to a level below 0.4V nominal disables the controller, causes the

oscillator to stop, and makes the UGATE and LGATE outputs held low.

FB

Feedback Pin. The voltage at this pin is regulated to 1.0V. Connect to the

resistor divider between output and GND to set the output voltage.

SEN2

The Current Sense Input2 (+) Pin. When the SEN2 is larger than the current

sense voltage, OCP function will enable.

SEN1

The Current Sense Input1 (+) Pin. When the SEN1 is larger than the current

sense voltage, OCP function will enable.

GND

Ground. Connect this pin to a large PCB copper area for best heat dissipation,

Return FB, and COMP to this GND and connect this GND to power GND at a

single point for best noise immunity.

LG

Output to Low-side Gate Driver.

UG

Output to High-side Gate Driver.

LX

Power Switching Output to External Inductor.

BS

Bootstrap Pin. This provides power to the internal higher MOSFET gate driver.

Connect a 100nF capacitor from BS pin to LX pin.



ORDER/MARKING INFORMATION

Order Information

Package Type

AX3075 X XXX X

Packing

Blank : Tube

A : Taping

J10: TDFN-10L

Blank:120KHz

B:65KHz

U ：MSOP-10L

Top Marking(MSOP-10L)

Top Marking(TDFN-10L)

AX 3

Logo

Part number

ID code: internal

WW: 01~52

Y Y W W X

0 7 5 B

Year: 18=2018

19=2019

20=2020

21=2021

22=2022

45=2045

:

3

Part number

ID code: internal

WW: 01~52

Year: 18=2018

19=2019

20=2020

21=2021

22=2022

Y Y W W X

0 7 5 X

AX3075

AX3075B

:

45=2045