I
NTEGRATED
C
IRCUITS
D
IVISION
DS-CPC9909-R05 www.ixysic.com 1
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
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
I
NTEGRATED
C
IRCUITS
D
IVISION
CPC9909
2 www.ixysic.com R05
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6 Thermal Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 LED Driver Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Input Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Current Sense Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Current Sense Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.6 Enable/Disable Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.7 Minimum Off-Time One-Shot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.8 Inductor Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.9 Gate Output Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.10 Linear Dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.11 PWM Dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.12 Combination Linear and PWM Dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Moisture Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 ESD Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.4 Board Wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.5 Mechanical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
I
NTEGRATED
C
IRCUITS
D
IVISION
CPC9909
R05 www.ixysic.com 3
1. Specifications
1.1 Package Pinout 1.2 Pin Description
V
IN
CS
GND
GATE
R
T
LD
V
DD
PWMD
1
2
3
4
8
7
6
5
Pin# Name Description
1
V
IN
Input voltage
2CS
LED Current Sense input. Internal current
sense threshold is set at V
CS(high)
. The
external sense resistor sets the maximum LED
current.
3 GND Device Ground
4 GATE External MOSFET gate driver output
5PWMD
Low-frequency PWM dimming control input with
internal pull-down resistor.
6
V
DD
Regulated supply voltage output. Requires a
storage capacitor to GND. Can be overdriven by
external voltage applied to V
DD
.
7LD
Linear Dimming. Apply a voltage less than
V
CS(high)
to dim the LED(s).
8
R
T
Resistor to GND sets the minimum off-time.
EP -
Electrical and thermal conductive pad on the
bottom of CPC9909NE. Connect this pad to
ground and provide sufficient thermal coupling
to remove heat from the package.

CPC9909NE

Mfr. #:
Manufacturer:
IXYS Integrated Circuits
Description:
LED Lighting Drivers 8V-550V 2.5W
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet