LIN D
O C
#:
8415
LX8415-xx
0 . 5 A L
O W
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 VA T I O N
P
R E L I M I N A R Y
D
A T A
S
H E E T
DESCRIPTION
The LX8415 series ICs are positive Low
Dropout (LDO) regulators. At the de-
signed maximum load current, the
LX8415 series dropout voltage is guar-
anteed to be 1.3V or lower at 0.5A. The
dropout voltage decreases with load
current.
The LX8415 is available in an adjust-
able output voltage version and fixed
output versions of 2.5V and 3.3V. On-
chip trimming of the internal voltage
reference allows specification of the
initial output voltage to within 鹵1% of
its nominal value. The output current-
limit point is also trimmed, which helps
to minimize stress on both the regulator
and the system power source when they
are operated under short-circuit condi-
tions. The regulator's internal circuitry
will operate at input-to-output differen-
tial voltages down to 1V.
Most regulator circuit designs include
output capacitors with values in the
range of tens to hundreds of microfarads
or more. The LX8415 typically requires
at least 10碌F of output capacitance for
stable operation.
The LX8415 is available in the low-
profile plastic SOT-223 package for ap-
plications where space is at a premium.
K E Y F E AT U R E S
s
0.7% Line Regulation Maximum
s
0.7% Load Regulation Maximum
s
Output Current Of 500mA
s
Regulates To <1.3V Dropout
s
Space Saving SOT-223 Surface
Mount Package
s
Guaranteed Dropout Voltage At Multiple
Current Levels
s
3-Terminal Adjustable, Fixed 2.5V And
Fixed 3.3V
A P P L I C AT I O N S
s
Battery Chargers
s
s
s
s
5V To 3.3V Linear Regulators
Post Regulators For Switching Supplies
Modems
DVD Players
NOTE:
For current data & package dimensions, visit our web site:
http://www.linfinity.com.
PRODUCT HIGHLIGHT
L
OW
C
OST
5V
TO
3.3V R
EGULATOR
A
VA I L A B L E
O
P T I O N S
PER
P
A RT
#
Output
Voltage
2.5V
3.3V
Adjustable
V
IN
5V
LX8415-xx
OUT
IN
ADJ
10碌F
R
1
60.4鈩?/div>
R
2
100鈩?/div>
V
OUT
3.3V
22碌F
Part #
LX8415-25
LX8415-33
LX8415-00
PA C K A G E O R D E R I N F O
T
A
(擄C)
0 to 125
ST
Plastic SOT-223
3-pin
LX8415-xxCST
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number (i.e. LX8415-33CSTT).
"xx" refers to output voltage, please see table above.
Copyright 漏 1999
Rev. 0.4 1/99
L
IN
F
INITY
M
ICROELECTRONICS
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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