LX8117-xx / 8117A-xx / 8117B-xx
0.8, 1 & 1.2A L
OW
D
ROPOUT
P
OSITIVE
R
EGULATORS
T
H E
I
N F I N I T E
P
O W E R
O F
I
N N O V A T I O N
P
R O D U C T I O N
D
A T A
S
H E E T
DESCRIPTION
The LX8117/8117A/8117B series are positive
differential voltages down to 1V.
Low Dropout (LDO) regulators. At the designed
Most regulator circuit designs include output
maximum load current, the LX8117 series
capacitors with values in the range of tens to
dropout voltage is guaranteed to be 1.2V or hundreds of microfarads or more. The
lower at 0.8A (LX8117A 1.3V @ 1A). The
LX8117/17A/17B typically requires at least
dropout voltage decreases with load current.
10碌F of output capacitance for stable operation.
An adjustable output voltage version of the
PNP-type regulators can waste current equal
LX8117/17A/17B is available, as well as to as much as 10 percent of their output as a
versions with fixed outputs of 2.5V, 2.85V, 3.3V quiescent current which flows directly to
and 5V. The 2.85V version is specifically ground, bypassing the load. Quiescent current
designed for use as a component of active
from the LX8117/17A/17B flows through the
termination networks for the SCSI bus. On-chip load, increasing power-use efficiency and
trimming of the internal voltage reference allows
allowing cooler operation.
specification of the initial output voltage to
The LX8117 is available in low-profile
within 卤1% of its nominal value. The output plastic SOT-223 and D-Pak packages for
current-limit point is also trimmed, which helps
applications where space is at a premium. The
to minimize stress on both the regulator and the
LX8117 is also available in a plastic TO-263
system power source when they are operated package for instances when the thermal
under short-circuit conditions. The regulator's resistance from the circuit die to the
internal circuitry will operate at input-to-output
environment must be minimized.
IMPORTANT:
For the most current data, consult
MICROSEMI鈥檚
website:
http://www.microsemi.com
KEY FEATURES
0.2% Line Regulation Maximum
0.4% Load Regulation Maximum
Output Current Of 800mA
Regulates Down To 1.2V
Dropout (LX8117) And 1.3V
Dropout (LX8117A)
Operates Down To 1V Dropout
Space Saving SOT-223 Surface
Mount Package
Guaranteed Dropout Voltage At
Multiple Current Levels
Three-Terminal Adjustable Or
Fixed 2.5V, 2.85V, 3.3V & 5V
APPLICATIONS
Battery Chargers
Active SCSI Terminators
5V To 3.3V Linear Regulators
High-Efficiency Linear
Regulators
Post Regulators For Switching
Supplies
PRODUCT HIGHLIGHT
A
CTIVE
T
ERMINATOR FOR
SCSI-2 B
US
110
惟
110
惟
Available Options Per Part #
Part #
Output Voltage
LX8117(x)-25
2.5V
LX8117(x)-28
2.8V
LX8117(x)-33
3.3V
LX8117(x)-05
5V
(x) 鈥?denotes O/P Current Setting
LX8117-28
IN
4.75V to
5.25V
GND
10 碌F
22 碌F
OUT
110
惟
18 to 27
Lines
110
惟
T
A
(掳C)
O/P
Current
0.8A
1.0A
1.2A
ST
PACKAGE ORDER INFO
Plastic SOT-223
Plastic TO-263
DD
3-Pin
3-Pin
RoHS Compliant / Pb-free
Transition DC: 0535
DT
Plastic TO-252
(D-Pak) 3-Pin
RoHS Compliant / Pb-free
Transition DC: 0522
RoHS Compliant / Pb-free
Transition DC: 0532
0 to 125
LX8117-xxCST
LX8117A-xxCST
LX8117B-xxCST
LX8117-xxCDD
LX8117A-xxCDD
LX8117B-xxCDD
LX8117-xxCDT
LX8117A-xxCDT
LX8117B-xxCDT
Note: Available in Tape & Reel. Append the letter 鈥淭R鈥?to the part number. (i.e. LX8117-00CST-TR)
Copyright
漏
2000
Rev. 1.5a,2005-10-25
M
ICROSEMI
I
NC
.
11861 W
ESTERN
A
VENUE
, G
ARDEN
G
ROVE
, CA. 92841, 714-898-8121, F
AX
: 714-893-2570
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