LX8941_07 Datasheet, PDF (1/5 Pages) Microsemi Corporation – TM Adjustable Low Dropout Regulator

LX8941
TM
®
Adjustable Low Dropout Regulator
PRELIMINARY DATA SHEET
DESCRIPTION
The Microsemi LX8941 is an This feature makes it ideal for some
adjustable, low dropout regulator rated for processor applications that require 4V
more than 1A of output current. It can operation from a 5V supply. In addition, the
regulate with as low as 0.8V headroom LX8941 provides an on / off switch that
between the input and output voltages, at reduces the IC quiescent current when
1A output current, thus minimizing power activated, making it ideal for battery
dissipation. In addition, it can be used in operated applications.
applications where worst case supplies
require a low input / output differential to
maintain regulation.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
ƒ 2% Internally Trimmed Output
ƒ Output Current In Excess of 1A
ƒ Input – Output Differential Less
Than 0.8V @ 1A
ƒ Reverse Battery Protection
ƒ Short Circuit Protection
ƒ Internal Thermal Overload
Protection
ƒ Available in 5-Lead Plastic TO-
220 & Surface-Mount TO-263
5V
10 µF
PRODUCT HIGHLIGHT
Dropout Voltage vs. Output
Current vs. Temperature
IN _LXP8a9rt41 OUT
R1
ADJ
412
ON
R2
OFF
187
4V
22µF
600
500
400
300
200
125°C
25°C
100 ^-40°C
0
100
500
1000
Output Current (mA)
T_A (°C)
0 to 70
PACKAGE ORDER INFO
Plastic TO-220
Plastic TO-263
P _{5 pin}
DD _{5 Pin}
RoHS Compliant / Pb-free
Transition DC: 0543
RoHS Compliant / Pb-free
Transition DC: 0535
LX8941CP
LX8941CDD
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8941CDD-TR)
Copyright © 2001
Rev. 0.7a, 2005-11-10
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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