LXM1653-01

PRODUCT DA T ABOOK 1996/1997

3

Copyright © 1997

Rev. 0.1

3/97

FUNCTIONAL PIN DESCRIPTION

Conn.

Pin

Description

V

IN

Input voltage. (+6.5 to +18V

GND

Power supply return.

SLEEP

Logical high on this pin enables inverter operation. Logical low removes power from the module and

the lamp. A floating input is sensed as a logical low and will disable inverter operation. If not used,

connect SLEEP to V

BRITE

Brightness control input. Apply 0.0 to 2.0 volts DC to control lamp brightness. Lamp current varies

linearly with input voltage. Open circuit or 2.0V gives maximum brightness. This input may also be

driven with a PWM logic signal. See Application Notes Section.

AGND

Brightness control signal return. For best results do not run V

V

REF

Reference Voltage Output. 2.5V @ 500µA max. For use with external dimming circuit.

CN1-1

CN1-2

CN1-3

CN1-4

CN1-5

CN1-6

CN1-7

CN1-8

CN1

CN2

CN2-1

CN2-2

LAMP HI

High-voltage connection to high side of lamp. Connect to lamp terminal with shortest lead length. Do

not connect to ground.

LAMP LO

High-voltage connection to low side of lamp. Connect to lamp terminal with longer lead length.

This lead may be safely connected to ground, but may not result in specified performance depending on

system wiring and lamp characteristics.

APPLICA TION DIAGRAM

FIGURE 1 — MAXIMUM LAMP CURRENT vs. INPUT VOLTAGE FOR TYPICAL LAMP VOLTAGES

V

6

78

9

10

18

3.0

4.0

5.0

6.0

8.0

9.0

7.0