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MA5603

Major Power Technology Co., Ltd.

Rev.1.4

Aug 24, 2016

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PIN ASSIGNMENT

The package of MA5603 is SOP8L-EP(Exposed pad); the pin assignment is given by:

Name

Description

BS

Boot-Strap Pin. Supply high side gate driver. Decouple this pin to LX pin with 24ohm +

0.1uF ceramic cap.

IN

Power Input pin. Bypass IN to GND with a suitably large capacitor to eliminate noise on

the input to the IC.

SW

Power Switching Output. SW is the switching node that supplies power to the output.

Connect the output LC filter from SW to the output load.

GND

Ground.

PAD

Ground (Connect to GND).

FB

Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB with a

resistive voltage divider from the output voltage.

COMP

Compensation Node. COMP is used to compensate the regulation control loop. Connect

a series RC network from COMP to GND to compensate the regulation control loop.

EN

Enable control. Pull high to turn on. Do not float.

VDD

Internal regulator pin

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RDER/MARKING INFORMATION

Order Information

Top Marking (SOP-8L)