CPC9909 Datasheet, PDF (1/12 Pages) IXYS Corporation – High Effciency,Off-line, High Brightness LED Driver

INTEGRATED CIRCUITS DIVISION
CPC9909
High Efficiency, Off-Line,
High Brightness LED Driver
Features
• 8V_DC to 550V_DC Input Voltage Range
• >90% Efficiency
• Stable Operation at >50% Duty Cycle
• Drives Multiple LEDs in Series/Parallel
• Regulated LED Current
• Linear or PWM Brightness Control Inputs
• Resistor-Programmable Minimum Off-Time
• SOIC-8 RoHS Compliant Package
• Buck or Boost Configuration
Applications
• Flat-Panel Display RGB Backlighting
• Signage and Decorative LED Lighting
• DC/DC or AC/DC LED Driver Applications
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CPC9909 Block Diagram
V_DD
V_IN
R_T
LD
PW MD
Voltage
Regulator
Voltage
Reference
-
+
-
+
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
regulator that allows it to operate from 8V_DC to
550V_DC . This wide input operating voltage range
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
Part
CPC9909N
CPC9909NTR
CPC9909NE
CPC9909NETR
Description
SOIC-8 (100/Tube)
SOIC-8 Tape & Reel (2000/Reel)
SOIC-8 EP (Exposed Pad) (100/Tube)
SOIC-8 EP (Exposed Pad)Tape & Reel
(2000/Reel)
RT Minimum Off-Time
Q
One Shot ^TRIG
SQ
R
GATE
CS
GND
DS-CPC9909-R03
www.ixysic.com
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