Page 2 of 8

4E02N-Rev.P001

800KHz Synchronous Step-up

Converter with 5.5A Switches

EC3689

Ordering Information

Part Number

Package

Marking

Marking Information

EC3689NNMHR

SOP-8

(Exposed PAD)

3689

LLLLL

YYWWT

1.

LLLLL ：Lot No

2.

YYWW：Date Code

3.

T：Internal Track Code

Pin Configuration

Pin Description

NAME

PIN NO.

DESCRIPTION

VIN

1

Input Supply voltage

EN

2

Enable input.(1/VIN enabled,0/GND disabled)

GND

3

Analog Ground pin. Connect GND to PGND under EP.

FB

4

Voltage feedback of adjustable versions. Connect FB to GND and set fixed

5.05V output voltage.

VOUT

5

Step-up convert output

SW

6, 7

Step-up and rectifying switch input

PGND

8

Power Ground pin.

EP

Exposed pad must be soldered to achieve appropriate power dissipation.

Connect EP to GND.

EC3689 Top View