Microsemi Corporation LX8382A-33CV, LX8382A-33CP, LX8382A-00CV, LX8382A-00CP, LX8382-33CV Datasheet
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LIN DOC #:
A
8382
LX8382-xx/8382A-xx
THE INFINITE POWER OF INNOVATION
DESCRIPTION KEY FEATURES
The LX8382/8382A series ICs are
positive regulators designed to provide
10A output current. All internal
circuitry is designed to operate down
to a 1V input-to-output differential, so
the LX8382/82A can operate with
greater efficiency than previously
available devices. The dropout voltage
for each product is fully specified as a
function of load current. Dropout is
guaranteed at a maximum of 1.4V
for the LX8382 and 1.2V for the
LX8382A at maximum output current,
decreasing at lower load currents.
Fixed versions are also available and
specified in the Available Options table
below. The LX8382/82A have 1%
2% over line, load and temperature.
The LX8382/82A series devices are
pin-compatible with earlier 3-terminal
regulators, such as the 117 series
products. 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 LX8382/82A 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
LX8382/82A-xxC is specified over the
commercial range of 0°C to +125°C.
initial voltage reference accuracy and
PRODUCT HIGHLIGHT
3.3V, 10A REGULATOR
V
≥
IN
6MV1500GX
4.75V
1500µF
6.3V
from Sanyo
IN
LX8382-xx
ADJ
OUT
121Ω
1%
178
1%
10A LOW D
ROPOUT POSITIVE REGULATORS
P RODUCTION DAT A SHEET
■ THREE-TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE
■ GUARANTEED < 1.4V HEADROOM AT 10A
(LX8382)
■ GUARANTEED < 1.2V HEADROOM AT 10A
(LX8382A)
■ OUTPUT CURRENT OF 10A MINIMUM
p 0.015% LINE REGULATION
p 0.15% LOAD REGULATION
■ EVALUATION BOARD AVAILABLE:
REQUEST LXE9001 EVALUATION KIT
APPLICATIONS
■ PENTIUM
■ POST REGULATORS FOR SWITCHING
■ BATTERY CHARGERS
■ CONSTANT CURRENT REGULATORS
■ CYRIX
■ AMD-K6
■ HIGH-CURRENT MICROPROCESSORS
AVAILABLE OPTIONS PER PART #
3.1V at 10
2x 330µF, 6.3V
Oscon SA type
from Sanyo
-or3x 1500µF, 6.3V
Ω
6MV1500GX
from Sanyo
Part #
LX8382/8382A-00 Adjustable
LX8382/8382A-33 3.3V
Other voltage options may be available —
®
PROCESSOR APPLICATIONS
POWER SUPPLIES
®
TM
6x86
TM
Voltage
Please contact factory for details.
Output
Copyright © 1997
Rev. 1.0 8/97
Application of the LX8382 for a high-current microprocessor (e.g. AMD-K6)
with less than 130mV dynamic response to a 7.5A load transient.
PACKAGE ORDER INFORMATION
T
(°C)
A
0 to 125
Dropout
Voltage
1.4V LX8382-xxCP LX8382-xxCV
1.2V LX8382A-xxCP LX8382A-xxCV
"xx" refers to output voltage, please see table above.
Plastic TO-220
P
3-pin
FOR FURTHER INFORMATION CALL (714) 898-8121
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841
Plastic TO-247
V
3-terminal
1
LX8382-xx
T
PRODUCT DATABOOK 1996/1997
10A LOW D
RODUCTION DATA SHEET
P
ROPOUT POSITIVE REGULATORS
ABSOLUTE MAXIMUM RATINGS (Note 1)
Power Dissipation .................................................................................. Internally Limited
Input Voltage................................................................................................................ 10V
Input to Output Voltage Differential ........................................................................... 10V
Maximum Output Current ........................................................................................... 10A
Operating Junction Temperature
Plastic (P & V Packages) ....................................................................................... 150°C
Storage Temperature Range ...................................................................... -65°C to 150°C
Lead Temperature (Soldering, 10 seconds) ............................................................. 300°C
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect
to Ground. Currents are positive into, negative out of the specified terminal.
THERMAL DATA
P PACKAGE:
THERMAL RESISTANCE-JUNCTION TO TAB,
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθ
θ
θθ
JT
θθ
θ
θθ
JA
V PACKAGE:
= TA + (P
J
θθ
θ
θθ
JT
θθ
θ
θθ
JA
x θ
).
D
JA
THERMAL RESISTANCE-JUNCTION TO TAB,
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
Junction Temperature Calculation: T
numbers are guidelines for the thermal performance of the device/pc-board system.
The θ
JA
All of the above assume no ambient airflow.
2.7°C/W
60°C/W
1.6°C/W
35°C/W
PACKAGE PIN OUTS
TAB IS V
OUT
3
2
1
P PACKAGE
* Pin 1 is GND for fixed voltage versions.
* Pin 1 is GND for fixed voltage versions.
(Top View)
TAB ON REVERSE SIDE IS V
3
2
1
V PACKAGE
(Top View)
OUT
V
IN
V
OUT
ADJ / GND*
V
IN
V
OUT
ADJ / GND*
V
IN
ADJ or
GND*
* This pin GND for fixed voltage versions.
Bias
Circuit
Thermal
Limit Circuit
BLOCK DIAGRAM
Bandgap
Circuit
Control
Circuit
Output
Circuit
SOA Protection
Circuit
Current
Limit Circuit
V
OU
2
Copyright © 1997
Rev. 1.0 8/97
PRODUCT DATABOOK 1996/1997
LX8382-xx
10A LOW D
ROPOUT POSITIVE REGULATORS
P RODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for the LX8382/8382A-xxC with 0°C ≤ TA ≤ 125°C;
- V
V
temperature.)
= 3V; I
IN
OUT
LX8382-00 (Adjustable)
Reference Voltage (Note 4) V
Line Regulation (Note 2) ∆V
Load Regulation (Note 2) ∆V
Thermal Regulation
Ripple Rejection (Note 3) V
Adjust Pin Current I
Adjust Pin Current Change (Note 4) ∆ I
Dropout Voltage LX8382-00 ∆V ∆V
Minimum Load Current I
Maximum Output Current I
Temperature Stability (Note 3) ∆V
Long Term Stability (Note 3) ∆V
RMS Output Noise (% of V
= 10A. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient
OUT
Parameter
Symbol
REFIOUT
10mA ≤ I
) 1.5V ≤ (V
REF (VIN
REFVOUT
)
(I
OUT
VIN - V
∆V
(Pwr)
TA = 25°C, 20ms pulse
OUT
C
ADJ
10mA ≤ I
ADJ
LX8382A-00 ∆V
OUT (MIN)VIN
OUT (MAX)
(T)
OUT
(t) TA = 125°C, 1000 hours
) (Note 3) V
OUT
OUT
OUT (RMS)TA
Test Conditions Units
= 10mA, TA = 25°C
≤ I
OUT
- V
IN
≥ V
, VIN - V
REF
= 3V, 10mA ≤ I
OUT
= 5V, f =120Hz, C
OUT
= 10µF, TA = 25°C, I
ADJ
≤ I
OUT
= 1%, I
REF
REF
= 1%, I
OUT
OUT
≤ 10V
(VIN - V
OUT
) ≤ 7V
= 25°C, 10Hz ≤ f ≤ 10kHz
OUT (MAX)
), V
≤ 7V
OUT
IN
= 3V, 10mA ≤ I
OUT
OUT (MAX)
= 10A
= 10A
, 1.5V ≤ (V
OUT
OUT
, 1.5V ≤ (V
- V
), V
OUT
≤ 10A, T
OUT
≤ 10V, P ≤ P
IN
= 25°C
A
IN
≤ 10A
= 100µf Tantalum, VIN = 6.5V
= 10A
OUT
- V
), V
OUT
≤ 10V
IN
IN
MAX
LX8382-00
Min. Typ. Max.
1.238 1.250 1.262 V
1.225 1.250 1.270 V
0.015 0.2 %
0.15 0.4 %
0.3 0.5 %
0.01 0.02 %/W
65 83 dB
55 100 µA
0.2 5 µA
1.2 1.4 V
1.1 1.2 V
210mA
10 12 A
0.25 %
0.3 1 %
0.003 %
LX8382-33 (3.3V Fixed)
Parameter
Output Voltage (Note 4) V
Line Regulation (Note 2) ∆V
Load Regulation (Note 2)
Thermal Regulation
Ripple Rejection (Note 3) C
Quiescent Current I
Dropout Voltage LX8382-33 ∆V ∆V
LX8382A-33 ∆V
Maximum Output Current I
Temperature Stability (Note 3) ∆V
Long Term Stability (Note 3) ∆V
RMS Output Noise (% of V
) (Note 3) V
OUT
Symbol
OUTVIN
OUT (VIN
∆V
OUT(IOUT
∆V
OUT
OUT (MAX)VIN
OUT
OUT
OUT (RMS)TA
= 5V, I
OUT
4.75V ≤ VIN ≤ 10V, 0mA ≤ I
) 4.75V ≤ V
)
V
(Pwr)
TA = 25°C, 20ms pulse
0mA ≤ I
Q
IN
= 5V, 0mA ≤ I
IN
= 100µF (Tantalum), I
OUT
OUT
= 1%, I
OUT
= 1%, I
OUT
≤ 7V
(T)
(t) TA = 125°C, 1000 hours
= 25°C, 10Hz ≤ f ≤ 10kHz
Test Conditions Units
= 0mA, TA = 25°C
≤ 7V
≤ I
OUT
OUT (MAX)
≤ I
, 4.75V ≤ VIN ≤ 10V
OUT (MAX)
≤ I
OUT
OUT (MAX)
≤ I
OUT
OUT (MAX)
≤ 10A, P ≤ P
OUT
= 10A
OUT
, V
≤ 7V
IN
, V
≤ 7V
IN
MAX
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.
Note 3. These parameters, although guaranteed, are not tested in production.
Note 4. See Maximum Output Current Section above.
LX8382-33
Min. Typ. Max.
3.267 3.3 3.333 V
3.235 3.3 3.365 V
16mV
515mV
0.01 0.02 % / W
60 83 dB
410mA
1.4 V
1.2 V
10 12 A
0.25 1 %
0.3 %
0.003 %
Copyright © 1997
Rev. 1.0 8/97
3
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