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CPC9909DB 其他数据使用手册 - IXYS Semiconductor
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IXYS Semiconductor
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LED驱动器
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CPC9909DB数据手册
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INTEGRATED CIRCUITS DIVISION
DS-CPC9909-R03 www.ixysic.com 1
CPC9909
High Efficiency, Off-Line,
High Brightness LED Driver
e
3
Pb
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
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
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
R
T
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