LX8819
TM
廬
Dual Channel 1A Low Dropout Regulator
D
ATA
S
HEET
DESCRIPTION
KEY FEATURES
Two Independent Regulated
Outputs
Accurate Output Voltages
Typical Dropout of 1.25V at 1A
and 1.1V at 500mA
Independent Thermal and
Current Limit Protection
Low Profile 5 Lead SMT Power
Package
Low Tolerance Load
Regulation
Wide DC Supply Voltage of
3.5V to 10V
Loop Stability Independent of
Output Capacitor Type
APPLICATIONS
The LX8819 is a dual channel
positive-voltage linear regulator. This
dual regulator has one fixed output
coupled with an adjustable output.
Each channel features a low dropout
and a high accuracy.
The LX8819 provides designers
with a flexible power management
solution, minimal printed circuit board
area, and shorter design cycles.
Each channel can supply up to one
amp independently with a regulator
design optimized for system efficiency
by consuming minimal ground current
while directing quiescent current to
the load.
The LX8819 features on-chip
trimming of the internal voltage
reference enabling precise output
Voltages (typically 鹵1% of its specified
value) while the Bipolar output
transistor has a low dropout voltage
even at full output current (V
DO
< 1.25V
typical @ 1A).
Thermal and Short Circuit Current
Protection are integrated on-chip and
operate independently for each of the
regulator output.
The LX8819 regulator is stable with
a low-value output capacitor (typically
2.2碌F on the outputs) allowing the
designers flexibility in external
component selection.
Microsemi鈥檚 S-PAK and D-PAK
power packages enable maximum
power dissipation and ease of assembly
using surface mount technology.
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IMPORTANT:
For the most current data, consult
MICROSEMI鈥檚
website:
http://www.microsemi.com
5V to 3.3V / ADJ Regulators
Hard Disk Drives, CD-ROMs
ADSL and Cable Modems
Battery Charging Circuits
Instrumentation
PC Peripherals
PRODUCT HIGHLIGHT
V
IN
= 5V
22 F
VIN
VOUT2
10 F
V
OUT2
= 3.3V/2.5V @ 1A
V
OUT1
= 1.8V @ 1A
8819
GND
VOUT1
ADJ
221
10 F
499
PACKAGE ORDER INFO
LX8819
LX8819
T
J
(擄C)
0 to 125
Output V
1
Output V
2
(Pin 5)
(Pin 4)
Adj.
Adj.
3.3
2.5
DF
Plastic S-PAK
5 pin
DT
Plastic D-PAK
5-Pin
RoHS Compliant
Transition DC: 0515
LX8819-33CDF
LX8819-25CDF
LX8819-33CDT
LX8819-25CDT
Note: Available in Tape & Reel. Append the letters 鈥淭R鈥?to the part number. (i.e. LX8819-33CDT-TR)
Copyright
漏
2003
Revision 1.0a, 4/29/2005
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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