LX8415-XX Datasheet, PDF (1/7 Pages) Microsemi Corporation – 0.5 A LOW DROPOUT POSITIVE REGULATORS

T H E I N F I N I T E P O W E R O F I N N O VAT I O N
L I N D O C #: 8415
LX8415-xx
0.5A LOW DROPOUT POSITIVE REGULATORS
PR E L I M I N A RY D ATA 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 ±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 10µF 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.
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
PRODUCT HIGHLIGHT
LOW COST 5V TO 3.3V REGULATOR
LX8415-xx
V_IN
IN
OUT
V_OUT
5V
ADJ
3.3V
R₁
10µF
60.4Ω
22µF
R₂
100Ω
KEY FEATURES
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 5V To 3.3V Linear Regulators
s Post Regulators For Switching Supplies
s Modems
s DVD Players
A VA I L A B L E O PTIONS P E R P A RT #
Part #
Output
Voltage
LX8415-25
2.5V
LX8415-33
3.3V
LX8415-00
Adjustable
PA CKA GE OR D E R INFO
T_A (°C)
ST
Plastic
3-pin
SOT-223
0 to 125
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.
LINFINITY MICROELECTRONICS INC.
Copyright © 1999
Rev. 0.4 1/99
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: [phone]
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