LX1990ILM datasheet(2/11 Pages) MICROSEMI

2 / 11 page

Microsemi

Integrated Products

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

Page 2

 2001

Rev. 1.0c, 2002-05-29

LX1990

Dual Programmable LED Current Sink

INTEGR A T E D

PR ODU C T S

ABSOLUT E M AXI M U M RA T

ABSOLUT E M AXI M U M RA T I NGS

INGS

Supply Voltage (VDD)........................................................................................ 6V

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

ISET Maximum Current ..............................................................Internally Limited

ISET Maximum Voltage...................................................................................VDD

IOUT Maximum Compliance Voltage ............................................................... 12V

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

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

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

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

Lead Temperature (Soldering, 10sec)........................................................... 300°C

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

THERMA L D A TA

Plastic MLP 6-Pin

THERMAL RESISTANCE

-JUNCTION TO AMBIENT,

θθθθJA

°°°°C/W

Junction Temperature Calculation: TJ = TA + (PD x

θJA).

The

JA numbers are guidelines for the thermal performance of the device/pc-board

system. All of the above assume no ambient airflow.

PACKAGE PIN OUT

VDD

ENA

GND

OUTB

OUTA

IS ET

LM PACKAGE

(Top View)

1990

xxxx

LMI

LM PACKAGE MARKINGS

xxxx – Denotes Date Code / Lot Identification

F UNCTIONA L P I N D ESCR

F UNCTIONA L P I N D ESCR I P T ION

IP TION

NAME

DESCRIPTION

VDD

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.

IOUTA

IOUTB

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

without affecting regulation of the loaded output. If only one output is needed IOUTA & IOUTB must be shorted

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

ISET

Output current programming pin.

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