LX8383A-33CP Microsemi Analog Mixed Signal Group, LX8383A-33CP Datasheet

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LX8383A-33CP

Manufacturer Part Number
LX8383A-33CP
Description
IC REG LDO POS 7.5A 3.3V TO220
Manufacturer
Microsemi Analog Mixed Signal Group
Datasheet

Specifications of LX8383A-33CP

Regulator Topology
Positive Fixed
Voltage - Output
3.3V
Voltage - Input
Up to 10V
Number Of Regulators
1
Current - Output
7.5A (Min)
Operating Temperature
0°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Dropout (typical)
-
Current - Limit (min)
-
T
Copyright © 1996
Rev. 1.0
H E
V
Application of the LX8383A for the standard voltage (non VRE) Pentium Processor motherboard
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
IN
12/96
I
6MV1500GX
4.75V
N F I N I T E
from Sanyo
1500µF
6.3V
with less than 130mV dynamic response to a 7.5A load transient.
P
IN
O W E R
P R O D U C T H I G H L I G H T
-25 to 125
3.3V, 7.5A R
LX8383A
0 to 125
F O R F U R T H E R I N F O R M A T I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1
T
D E S C R I P T I O N
A
O F
(°C)
ADJ
11861 W
I
P A C K A G E O R D E R I N F O R M A T I O N
N N O V A T I O N
"xx" refers to output voltage, please see table above.
E G U L AT O R
Dropout
Voltage
2% over line, load and temperature.
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.
current flows into the load, thereby
increasing efficiency.
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.
OUT
ESTERN
1.5V
1.3V
1.3V
1.5V
1.3V
The LX8383/83A/83B series devices are
The LX8383/83A/83B series quiescent
121
1%
205
1%
A
VENUE
P
LX8383A-xxCP
LX8383B-xxCP
LX8383A-xxIP
Plastic TO-220
3-pin
LX8383-xxCP
LX8383-xxIP
, G
LX8383-xx/8383A-xx/8383B-xx
ARDEN
2x 330µF, 6.3V
Oscon SA type
from Sanyo
-or-
3x 1500µF, 6.3V
6MV1500GX
from Sanyo
7 . 5 A L
3.38V at 7.5A
This feature
G
ROVE
P
R O D U C T I O N
O W
, CA. 92841
V
LX8383A-xxCV
LX8383B-xxCV
LX8383A-xxIV
LX8383-xxCV
Plastic TO-247
3-terminal
D
LX8383-xxIV
R O P O U T
A
Part #
LX8383/83A/83B-00
LX8383/83A/83B-33
p 0.015% LINE REGULATION
p 0.15% LOAD REGULATION
VA I L A B L E
Other voltage options may be available —
THREE-TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE
GUARANTEED < 1.3V HEADROOM AT
7.5A (LX8383A/8383B)
GUARANTEED < 1.5V HEADROOM AT
7.5A (LX8383)
OUTPUT CURRENT OF 7.5A MINIMUM
EVALUATION BOARD AVAILABLE:
REQUEST LXE9001 EVALUATION KIT
PENTIUM
HIGH EFFICIENCY LINEAR REGULATORS
POST REGULATORS FOR SWITCHING
POWER SUPPLIES
BATTERY CHARGERS
CONSTANT CURRENT REGULATORS
CYRIX
AMD-K5
Please contact factory for details.
P
O S I T I V E
K E Y F E A T U R E S
A P P L I C A T I O N S
D
®
6x86
TM
A T A
®
PROCESSOR APPLICATIONS
O
TM
P T I O N S P E R
LIN D
S
R
E G U L A T O R S
H E E T
O C
Adjustable
Voltage
Output
#: 8383
3.3V
P
A R T
1
#

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LX8383A-33CP Summary of contents

Page 1

... IN LX8383A V 4.75V IN 1500µF ADJ 6.3V 6MV1500GX from Sanyo 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. T (° 125 -25 to 125 Copyright © 1996 11861 W Rev. 1.0 ...

Page 2

LX8383-xx/8383A-xx/8383B- ...

Page 3

... Line Regulation (Note 2) Load Regulation (Note 2) Thermal Regulation Ripple Rejection (Note 3) Quiescent Current Dropout Voltage LX8383-33 LX8383A/83B-33 Maximum Output Current Temperature Stability (Note 3) Long Term Stability (Note 3) RMS Output Noise (% (Note 3) V OUT Note 2. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation ...

Page 4

LX8383-xx/8383A-xx/8383B- The LX8383/83A/83B series ICs are easy to use Low-Dropout (LDO) ...

Page 5

OVERLOAD RECOVERY (continued) If this limited current is not sufficient to ...

Page 6

LX8383-xx/8383A-xx/8383B- LOAD REGULATION (continued) Even when the circuit is optimally configured, ...

Page 7

LX8383/83A/83B (Note A) V OUT IN IN ADJ 10µ ...

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