LX8941
TM
廬
Adjustable Low Dropout Regulator
P
RELIMINARY
D
ATA
S
HEET
DESCRIPTION
The Microsemi LX8941 is an
adjustable, low dropout regulator rated for
more than 1A of output current. It can
regulate with as low as 0.8V headroom
between the input and output voltages, at
1A output current, thus minimizing power
dissipation. In addition, it can be used in
applications where worst case supplies
require a low input / output differential to
maintain regulation.
This feature makes it ideal for some
processor applications that require 4V
operation from a 5V supply. In addition, the
LX8941 provides an on / off switch that
reduces the IC quiescent current when
activated, making it ideal for battery
operated applications.
KEY FEATURES
2% Internally Trimmed Output
Output Current In Excess of 1A
Input 鈥?Output Differential Less
Than 0.8V @ 1A
Reverse Battery Protection
Short Circuit Protection
Internal Thermal Overload
Protection
Available in 5-Lead Plastic TO-
220 & Surface-Mount TO-263
WWW .
Microsemi
.C
OM
IMPORTANT:
For the most current data, consult
MICROSEMI鈥檚
website:
http://www.microsemi.com
PRODUCT HIGHLIGHT
Dropout Voltage vs. Output
Current vs. Temperature
5V
10 碌F
ON
OFF
R2
187
IN
Dropout Voltage - (mV)
Part
LX8941
OUT
R1
412
4V
600
500
400
300
200
100
0
100
500
1000
Output Current (mA)
125擄C
25擄C
-40擄C
ADJ
22碌F
PACKAGE ORDER INFO
T
A
(擄C)
0 to 70
P
Plastic TO-220
5 pin
LX8941CP
DD
Plastic TO-263
5 Pin
LX8941CDD
LX8941
LX8941
RoHS Compliant / Pb-free
Transition DC: 0543
RoHS Compliant / Pb-free
Transition DC: 0535
Note: Available in Tape & Reel. Append the letters 鈥淭R鈥?to the part number. (i.e. LX8941CDD-TR)
Copyright
漏
2001
Rev. 0.7a, 2005-11-10
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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