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LX8383B-33CV fiches techniques PDF

Microsemi Corporation - 7.5 A LOW DROPOUT POSITIVE REGULATORS

Numéro de référence LX8383B-33CV
Description 7.5 A LOW DROPOUT POSITIVE REGULATORS
Fabricant Microsemi Corporation 
Logo Microsemi Corporation 





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LX8383B-33CV fiche technique
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 #: 8383
LX8383-xx/8383A-xx/8383B-xx
7.5A LOW DROPOUT POSITIVE REGULATORS
PR O D U C T I O N D ATA S H E E T
DESCRIPTION
The LX8383/8383A/8383B series ICs are
positive regulators designed to provide
7.5A output current. All internal circuitry
is designed to operate down to a 1V in-
put-to-output differential, so the LX8383/
83A/83B can operate with greater effi-
ciency than previously available devices.
The dropout voltage for each product is
fully specified as a function of load cur-
rent. Dropout is guaranteed at a maxi-
mum of 1.3V for the LX8383A/83B and
1.5V for the LX8383, at maximum output
current, decreasing at lower load currents.
Fixed versions are also available and speci-
fied in the Available Options table below.
The LX8383B offers a tighter voltage ref-
erence tolerance: 0.8% initial accuracy and
1% over line, load and temperature. The
LX8383/83A have 1% initial accuracy and
2% over line, load and temperature.
The LX8383/83A/83B series devices are
pin-compatible with earlier 3-terminal
regulators, such as the 117 series prod-
ucts. While a 10µF output capacitor is
required on both input and output of these
new devices, this capacitor is generally
included in most regulator designs.
The LX8383/83A/83B series quiescent
current flows into the load, thereby
increasing efficiency. This feature
contrasts with PNP regulators, where up
to 10% of the output current is wasted as
quiescent current. The LX8383I/8383AI is
specified over the industrial temperature
range of -25°C to +125°C and the
LX8383C/8383AC/8383BC is specified
over the commercial range of 0°C to
+125°C.
PRODUCT HIGHLIGHT
3.3V, 7.5A RE G U L AT O R
VIN 4.75V
1500µF
6.3V
6MV1500GX
from Sanyo
IN LX8383A OUT
121
ADJ 1%
205
1%
3.38V at 7.5A
2x 330µF, 6.3V
Oscon SA type
from Sanyo
-or-
3x 1500µF, 6.3V
6MV1500GX
from Sanyo
KEY FEATURES
s THREE-TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE
s GUARANTEED < 1.3V HEADROOM AT
7.5A (LX8383A/8383B)
s GUARANTEED < 1.5V HEADROOM AT
7.5A (LX8383)
s OUTPUT CURRENT OF 7.5A MINIMUM
p 0.015% LINE REGULATION
p 0.15% LOAD REGULATION
s EVALUATION BOARD AVAILABLE:
REQUEST LXE9001 EVALUATION KIT
A P P L I C AT I O N S
s PENTIUM® PROCESSOR APPLICATIONS
s HIGH EFFICIENCY LINEAR REGULATORS
s POST REGULATORS FOR SWITCHING
POWER SUPPLIES
s BATTERY CHARGERS
s CONSTANT CURRENT REGULATORS
s CYRIX® 6x86TM
s AMD-K5TM
AVAILABLE O PTIONS PER PAR T #
Part #
Output
Voltage
LX8383/83A/83B-00
Adjustable
LX8383/83A/83B-33
3.3V
Other voltage options may be available —
Please contact factory for details.
Application of the LX8383A for the standard voltage (non VRE) Pentium Processor motherboard
with less than 130mV dynamic response to a 7.5A load transient.
Copyright © 1996
Rev. 1.0 12/96
PACKAGE ORDER INFORMATION
TA (°C)
Dropout
Voltage
P
Plastic TO-220
3-pin
V
Plastic TO-247
3-terminal
1.5V
LX8383-xxCP
LX8383-xxCV
0 to 125
1.3V
LX8383A-xxCP
LX8383A-xxCV
1.3V
LX8383B-xxCP
LX8383B-xxCV
-25 to 125
1.5V
LX8383-xxIP
LX8383-xxIV
1.3V
LX8383A-xxIP
LX8383A-xxIV
"xx" refers to output voltage, please see table above.
FOR FURTHER INFORMATION CALL (714) 898-8121
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841
1

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