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RT8525D

www.richtek.com

DS8525D-00 June 2012

©

Copyright 2012 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

Functional Pin Description

Pin No.

Pin Name

Pin Function

1

VDC

Output of Internal Pre-Regulator.

2

VIN

IC Power Supply.

3

COMP

Compensation for Error Amplifier. Connect a compensation network to ground.

4

SS

External Capacitor to Adjust Soft-Start Time.

5

FSW

Frequency Adjust Pin. This pin allows setting the switching frequency with a

resistor from 50kHz to 600kHz.

6

FAULT

Open Drain Output for Fault Detection.

7

FB

Feedback to Error Amplifier Input.

8

OVP

Sense Output Voltage for Over Voltage Protection and Under Voltage Protection.

9

ISW

External MOSFET Switch Current Sense Pin. Connect the current sense resistor

between the external N-MOSFET switch and ground.

10,

13 (Exposed Pad)

GND

Ground of Boost Controller. The exposed pad must be soldered to a large PCB

and connected to GND for maximum power dissipation.

11

DRV

Drive Output for the N-MOSFET.

12

EN

Chip Enable (Active High).