HV9803LG-G Supertex, HV9803LG-G Datasheet - Page 6

• Manufacturer Part Number: HV9803LG-G
• Description: LED Lighting Drivers LED Driver w/Average Constant Current
• Manufacturer: Supertex

Specifications of HV9803LG-G

• Rohs: yes
• Input Voltage: 7 V to 13.2 V
• Maximum Supply Current: 2.5 mA
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8
• Minimum Operating Temperature: - 40 C
• Power Dissipation: 650 mW

Pin Description (8-Lead SOIC)
Doc.# DSFP-HV9803
NR012313
Pin
1
2
3
4
5
6
7
8
PWMD
UVLO
Name
GATE
GND
VDD
CS
RT
LD
Description
This pin is the current sense pin used to detect the MOSFET source current by means of an external
sense resistor.
This is the power supply input for the GATE output and input of the low-voltage regulator powering the
internal logic. It must be bypassed with a low ESR capacitor to GND (at least 0.1μF).
Ground return for all internal circuitry. This pin must be electrically connected to the ground of the
power train.
This pin is the output gate driver for an external N-channel power MOSFET.
A resistor connected between RT and GND programs the GATE off-time.
This is the PWM dimming input of the IC. When this pin is pulled to GND, the gate driver is turned off.
When the pin is pulled high, the gate driver operates normally.
This pin is the under-voltage comparator input. It is also used to form a short-circuit protection skip
delay.
This pin is the reference voltage input for programming the LED current.
6
Supertex inc.
www.supertex.com
HV9803