LX8818
I N T E G R A T E D
P R O D U C T S
1A Low Dropout Regulator
P
RODUCTION
DATA SHEET
DESCRIPTION
KEY FEATURES
WWW .
Microsemi
.C
OM
The LX8818 is a single channel
positive-voltage linear regulator. The
regulator output is configured as fixed
(3.3v or 2.5v) or adjustable, featuring
low-dropout and high accuracy.
The LX8818 regulator is stable with
ceramic or tantalum low-value
capacitors, typically 2.2碌F on the
outputs, allowing designers flexibility
in external component selection.
The LX8818 provides designers
with a flexible power management
solution. The regulator design is
optimized for system efficiency by
consuming minimal ground current
and directing quiescent current to the
load.
The LX8818 features on-chip trimming
of the internal voltage enabling precise
output voltages, typically
鹵1%
of it鈥檚
specified value, while the BiPolar output
transistor has a low dropout voltage even
at full output current (V
DO
< 1.2V typ. @
1A). Output voltage overshoot is
minimized when V
IN
is applied, typically
V
OUT
overshoot < 2% for V
IN
鈮?/div>
1V/uS
ramp.
Thermal and Short Circuit Current
Protection are integrated on-chip.
Microsemi鈥檚 D-PAK or Micro power
package enables maximum power
dissipation and ease of assembly using
surface mount technology.
Accurate Output Voltage
Typical Dropout of 1.2V at 1A
and 1.1V at 500mA
Independent Thermal and
Current Limit Protection
Low Profile 3 Lead SMT Power
Package
Low Tolerance Load Regulation
(0.4%)
Wide DC Supply Voltage of 4.3V
to 10V
Loop Stability Independent of
Output Capacitor Type
APPLICATIONS/BENEFITS
5V to 3.3V/2.5V Regulators
Hard Disk Drives, CD-ROMs
ADSL and Cable Modems
Battery Charging Circuits
Instrumentation
PC Peripherals
IMPORTANT:
For the most current data, consult
MICROSEMI鈥檚
website:
http://www.microsemi.com
APPLICATION CIRCUITS
Fixed Output
V
IN
= 5V
V
IN
= 5V
Adjustable Output
V
IN
3.3V @ 1.0A
4.7碌F
4.7碌F
LX8818-0x
V
IN
V
OUT
V
OUT
R1
499
1.8V* @ 1.0A
4.7碌F
LX8818-0x
ADJ
GND
4.7碌F
GND
R2
1150
錚?/div>
R
1
錚?/div>
*
V
1
=
V
REF
錚?/div>
1
+ 錚?+
I
ADJ
R
1
錚?/div>
R
2
錚?/div>
錚?/div>
LX8818
LX8818
T
J
(擄C)
0 to 125
PACKAGE ORDER INFO
Plastic MLP MLP Part
O
UTPUT
V
LM
6-PIN
Marking
3.3V
LX8818-02CLM
8-02
DT
Plastic TO-252
3-PIN
LX8818-01CDT
Consult Factory for 2.5V and Adjustable Versions
Note: Available in Tape & Reel.
Append the letter 鈥淭鈥?to the part number. (i.e. LX8818-01CDTT)
Copyright
錚?/div>
2000
Rev. 1.0, 2002-10-01
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
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英文版
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MICROSEMI ...
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英文版
Low Drop Out Regulator - Dual
ETC
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英文版
Low Drop Out Regulator - Positive Adjustable
ETC
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英文版
Low Drop Out Regulator - Positive Adjustable
ETC
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英文版
Dual Channel 1A Low Dropout Regulator
MICROSEMI
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英文版
Dual Channel 1A Low Dropout Regulator
MICROSEMI ...
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英文版
Dual Channel 1A Low Dropout Regulator
MICROSEMI
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英文版
Dual Channel 1A Low Dropout Regulator
MICROSEMI ...
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英文版
Dual Channel 1A Low Dropout Regulator
MICROSEMI
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英文版
Dual Channel 1A Low Dropout Regulator
MICROSEMI ...
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英文版
Dual Channel 1A Low Dropout Regulator
MICROSEMI
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英文版
Dual Channel 1A Low Dropout Regulator
MICROSEMI ...
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