HV9910
Pinout
Description
SO-16
Name
V
IN
CS
GND
GATE
PWM_D
1
4
5
8
9
SO-8
DIP-8
1
2
3
4
5
V
DD
12
6
LD
R
OSC
13
14
7
8
Input voltage 8V to 450V DC
Senses LED string current
Device ground
Drives the gate of the external MOSFET
Low Frequency PWM Dimming pin, also Enable
input. Internal 100kΩ pull-down to GND
Internally regulated supply voltage. 7.5V
nominal. Can supply up to 1mA for external
circuitry. A sufficient storage capacitor is used to
provide storage when the rectified AC input is
near the zero crossings.
Linear Dimming by changing the current limit
threshold at current sense comparator
Oscillator control. A resistor connected between
this pin and ground sets the PWM frequency.
8-Pin DIP/SOIC
No Connects (NC) are not internally connected and may be used for pass-thru PCB traces.
16-Pin SOIC
Block Diagram & Typical Application
3
C110504
SUPERTEX [ Supertex, Inc ]
