Microsemi

Integrated Products

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 2

Copyright

© 2001

Rev. 1.0d, 2005-03-14

LX1990

Dual Programmable LED Current Sink

TM

®

ABSOLUTE MAXI MUM RATI NGS

ENA Voltage..................................................................................................... 6V

Current Source Outputs.............................................................................. 100mA

Operating Temperature Range .........................................................-40°C to 85°C

Maximum Junction Temperature ................................................................. 125°C

Storage Temperature......................................................................-65°C to 150°C

Peak Package Solder Reflow Temperature

(40 seconds maximum exposure).................................................... 260°C (+0, -5)

Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to

Ground. Currents are positive into, negative out of specified terminal

.

TH ERM A L DATA

LM

Plastic MLP 6-Pin

THERMAL RESISTANCE

41

°C/W

The

system. All of the above assume no ambient airflow.

PACKAGE PIN OUT

VDD

ENA

GND

I

OUTB

I

OUTA

ISET

1

2

3

4

5

6

(Top View)

1990

xxxx

LMI

xxxx – Denotes Date Code / Lot Identification

RoHS / Pb-free 100% Matte Tin Lead Finish

FUNCTIONAL PIN DESCRIPTION

Input Supply

GND

Common ground reference

ENA

Chip Enable Input. If logic high, current source outputs are enabled. If logic low, internal power is disconnected

from the VDD pin, disabling all functions. Logic threshold is 1.2 V.

&

Output Current Source. Two separate constant current outputs. Outputs may be loaded in any combination

together. In this case the value of ISET resistor must be doubled. Compliance voltage range is 0.1V to 10V.

Output current programming pin.