DS-CPC9909-R03

www.ixysic.com

1

CPC9909

High Efficiency, Off-Line,

High Brightness LED Driver

Pb

Features

Applications

Description

The CPC9909 is a low cost, high-efficiency, offline,

high-brightness (HB) LED driver manufactured using

IXYS Integrated Circuits Division’s high voltage

BCDMOS on SOI process. This driver has an internal

enables the driver to be used in a broad range of HB

LED applications.

The CPC9909 features pulse frequency modulation

(PFM) with a constant peak-current control scheme.

This regulation scheme is inherently stable, allowing

the driver to be operated above 50% duty cycle

without open loop instability or sub-harmonic

oscillations. LED dimming can be implemented by

applying a small DC voltage to the LD pin, or by

applying a low frequency PWM signal to the PWMD

pin.

The CPC9909 is available in a standard 8-lead SOIC

package and a thermally enhanced 8-lead SOIC

package with an exposed thermal pad (EP).

Ordering Information

CPC9909 Block Diagram

Part

Description

CPC9909N

SOIC-8 (100/Tube)

CPC9909NTR

SOIC-8 Tape & Reel (2000/Reel)

CPC9909NE

SOIC-8 EP (Exposed Pad) (100/Tube)

CPC9909NETR

SOIC-8 EP (Exposed Pad)Tape & Reel

(2000/Reel)

Voltage

Regulator

Voltage

Reference

Q

TRIG

Minimum Off-Time

One Shot

S

R

Q

-

+

-

+

V

DD

V

IN

LD

PWMD

GND

CS

GATE

R

T