iW1702

Offline Digital Quasi-Resonant PWM Controller Optimized

for 9V+ Applications with Option for Input OVP

Rev. 1.4

Product Summary

© 2017 Dialog Semiconductor

www.dialog-semiconductor.com

4 of 8

24-Oct-2017

4 Pinout Description

Pin Number

Pin Name

Type

Pin Description

1

Power Input

IC power supply.

2

Analog Input

Auxiliary voltage sense. It is used for primary-side regulation and detection of

secondary-side load transient signal.

3

CFG

Analog Input

In iW1702-0x/0xB and iW1702-3x/3xB options, it is used for external cable

drop compensation (CDC) configuration and supplemental output over-volt-

age protection (OVP). In iW1702-1x/1xB options, it is dedicated to input OVP.

4

CS/FS

Analog Input

Primary-side current sense and minimum switching frequency configuration.

It is used for cycle-by-cycle peak-current control and limit in primary-side CV/

CC regulation. It is also used for minimum switching frequency configuration.

5

GND

Ground

Ground.

6

OUTPUT

Output

Gate drive for the external MOSFET switch.

Figure 4.1 : 6-Lead SOT23 Package

iW1702

CFG

OUTPUT

GND

CS/FS

1

2

3

6

4

5