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LA8385 데이터시트(PDF) 1 Page - List of Unclassifed Manufacturers

부품명 LA8385
상세설명  3A LOW DROPOUT POSITIVE REGULATORS
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DESCRIPTION
KEY FEA TURES
s
s
s
s
s Three-Terminal Adjustable Or Fixed
Output Voltage
s
s
s
s
s Guaranteed 1% Voltage Reference
Accuracy Over Line, Load And
Temperature (LX8385B)
s
s
s
s
s Guaranteed < 1.5V Headroom At 3A
(LX8385)
s
s
s
s
s Guaranteed < 1.3V Headroom At 3A
(LX8385A/8385B)
s
s
s
s
s Output Current Of 3A Minimum
p 0.015% Line Regulation
p 0.1% Load Regulation
The LX8385/8385A/8385B series ICs are
positive regulators designed to provide
3A output current. Each regulator yields
higher efficiency than currently available
devices with all internal circuitry designed
to operate down to a 1V input-to-output-
differential. In these products, the drop-
out voltage is fully specified as a function
of load current. The LX8385's dropout is
guaranteed at a maximum of 1.5V at maxi-
mum output current, decreasing at lower
load currents. The LX8385A/85B have a
maximum dropout voltage of 1.3V.
The LX8385B offers a tighter voltage
reference tolerance: ±1.0% over line, load
and temperature, with 0.8% initial accu-
racy. The LX8385/85A have 1.0% initial
accuracy, with 2% over line, load and tem-
perature.
The LX8385/85A/85B series devices are
pin-compatible with earlier 3-terminal
regulators, such as 117 series products.
While a 10µF output capacitor is required
on both input and output of these new
devices, this is generally included in most
regulator designs.
The quiescent current of the LX8385/
85A/85B series products flows into the
load, increasing efficiency. This feature
contrasts with PNP regulator designs,
where up to 10% of the output current is
wasted as quiescent current.
The LX8385-xxI is rated for -25°C to
+125°C applications, and the LX8385-xxC
/8385B-xxC is rated for 0°C to +125°C
applications.
PRODUCT HIGHLIGHT
3.3V, 3A REGULATOR
APPLICA TIONS
s High Efficiency Linear Regulators
s Post Regulators For Switching
Power Supplies
s Battery Chargers
s Constant Current Regulators
s Graphics & Standard Supplies
s Processor I/O Supply
s Low Voltage Memory & Chipset Supplies
3A L OW D ROPOUT P OSITIVE R EGULA TORS
P RODUCTION D AT A S HEET
T HE
I NFINITE
P OWER
OF
I NNOV A TION
LX8385-xx/8385A-xx/8385B-xx
LIN DOC #: 8385
LX8385
200
1%
1%
3.3V at 3A
5V
OUT
IN
ADJ
1500µF, 6.3V
6MV1500GX
2x 1500µF, 6.3V
6MV1500GX
from Sanyo
121
Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number
(i.e. LX8385-00CDDT).
"xx" refers to output voltage, please see table above.
* Consult factory for availability of TO-3 Metal Can.
LX8385/85A/85B-00
Adjustable
LX8385/85A/85B-33
3.3V
LX8385/85A/85B-05
5.0V
Part #
Output
Voltage
AVAILABLE O PTIONS PER PAR T #
Other voltage options may be available —
Please contact factory for details.
P ACKAGE ORDER INFORMA TION *
T
A (°C)
P
1.5V
LX8385-xxCP
LX8385-xxCD
0 to 125
1.3V
LX8385A-xxCP
LX8385A-xxCD
1.3V
LX8385B-xxCP
LX8385B-xxCD
-25 to 125
1.5V
LX8385-xxIP
LX8385-xxID
Dropout
Voltage
Plastic TO-220
3-pin
Plastic TO-263
3-pin
DD
Copyright © 1999
Rev. 2.0a 10/00
1
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
L IN F INITY M ICROELECTRONICS I NC .
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.


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