© Semiconductor Components Industries, LLC, 2007

March, 2007 − Rev. 6

1

Publication Order Number:

NCP1653/D

NCP1653, NCP1653A

Compact, Fixed−Frequency,

Continuous Conduction

Mode PFC Controller

The NCP1653 is a controller designed for Continuous Conduction

Mode (CCM) Power Factor Correction (PFC) boost circuits. It

operates in the follower boost or constant output voltage in 67 or 100

kHz fixed switching frequency. Follower boost offers the benefits of

reduction of output voltage and hence reduction in the size and cost

of the inductor and power switch. Housed in a DIP−8 or SO−8

package, the circuit minimizes the number of external components

and drastically simplifies the CCM PFC implementation. It also

integrates high safety protection features. The NCP1653 is a driver

for robust and compact PFC stages.

Features

Typical Applications

AC

Input

EMI

Filter

Output

In

Gnd

FB

CS

15 V

NCP1653

Figure 1. Typical Application Circuit

PDIP−8

P SUFFIX

CASE 626

1

8

PIN CONNECTIONS

http://onsemi.com

MARKING DIAGRAMS

SO−8

D SUFFIX

CASE 751

1

FB

2

3

In

4

CS

7 Drv

6 GND

(Top View)

A suffix = 67 kHz option

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W = Work Week

G or

G

= Pb−Free Package

1

8

1

8

NCP1653

AWL

YYWWG

http://onsemi.com

N1653

ALYW

G

1

8

1

8

NCP1653A

AWL

YYWWG

1653A

ALYW

G

1

8

See detailed ordering and shipping information in the package

dimensions section on page 18 of this data sheet.

ORDERING INFORMATION