iW3602

AC/DC Digital Power Controller for

Dimmable LED Drivers

Rev. 1.0

iW3602

© 2015 Dialog Semiconductor (UK) Ltd.

Datasheet

2 of 19

Pin #

Name

Type

Pin Description

1

OUTPUT(TR)

Output

Gate drive for chopping MOSFET switch.

2

Analog Input Auxiliary voltage sense (used for primary side regulation and ZVS).

3

Analog Input Rectified AC line voltage sense.

4

Analog Input External power limit and shutdown control.

5

GND

Ground

Ground.

6

Analog Input Primary current sense (used for cycle-by-cycle peak current control and

limit).

7

OUTPUT

Output

Gate drive for main MOSFET switch.

8

Power Input Power supply for control logic and voltage sense for power-on reset

circuitry.

Figure 3.1 : iW3602 Typical Application Circuit

AC Input

From Dimmer

RTN

+

U1

iW3602

NTC

Thermistor

OUTPUT(TR)

VT

OUTPUT

GND

1

2

3

8

7

6

4

5

+

Chopping

Circuit

Isolated Flyback

Converter

+

4.0 Pinout Description

iW3602

1

2

3

8

7

6

4

5

GND

OUTPUT(TR)

OUTPUT

Figure 4.1 : 8 Lead SOIC-8 Package