Off-Line, High Brightness LED Driver
Features
•
8V
DC
to 450V
DC
Input Voltage Range
•
>90% Efficiency
•
Drives Multiple LEDs in Series/Parallel
Combinations
•
Regulated LED Drive Current
•
Linear or PWM Brightness Control
•
Resistor-Programmable Oscillator Frequency
•
RoHS Compliant
MXHV9910
Description
The MXHV9910 is a low-cost, high-brightness (HB)
LED driver manufactured using Clare’s high-voltage
BCDMOS on SOI process. This driver has internal
circuitry that allows it to operate from a universal AC
line or from 8V
DC
to 450V
DC
. This highly versatile
input operating voltage enables this IC to be used in a
broad range of HB LED applications.
The driver features a fixed-frequency, peak-current
control method, which provides an ideal solution for
driving multiple LEDs in series and in parallel. In
addition, LED dimming can be implemented by
applying a small DC voltage to the LD pin, or by
applying a low-frequency digital PWM signal to the
PWMD pin.
The MXHV9910 is available in a standard 8-lead SOIC
package and a thermally enhanced 8-lead SOIC
package with an Exposed Thermal Pad (EP)
Applications
•
Flat-Panel Display RGB Backlighting
•
Signage and Decorative LED Lighting
•
DC/DC or AC/DC LED Driver Applications
Ordering Information
Part
Description
SOIC-8 (100/Tube)
SOIC-8 Tape & Reel (2000/Reel)
SOIC-8 EP (100/Tube)
With Exposed Thermal Pad
SOIC-8 EP Tape & Reel (2000/Reel)
With Exposed Thermal Pad
Pb
RoHS
2002/95/EC
e
3
MXHV9910B
MXHV9910BTR
MXHV9910BE
MXHV9910BETR
Block Diagram
V
DD
V
IN
6
1
Voltage
Reference
250mV
Voltage
Regulator
R
T
8
OSC
-
+
PWM
Control
4
GATE
LD
PWMD
GND
7
5
3
-
+
2
CS
DS-MXHV9910-R01
www.clare.com
1
CLARE [ CLARE, INC. ]
