LX8384X-XX_06 Datasheet, PDF (1/11 Pages) Microsemi Corporation – 5A Low Dropout Positive Regulators

LX8384x-xx
TM
®
5A Low Dropout Positive Regulators
PRODUCTION DATA SHEET
DESCRIPTION
The LX8384/84A/84B Series ICs are ^{available and specified in the Available}
positive regulators designed to provide 5A ^{Options table below.}
output current. These regulators yield ^{The LX8384/84A/84B Series devices are}
higher efficiency than currently available ^{pin-compatible with earlier 3-terminal}
devices with all internal circuitry designed ^{regulators, such as the 117 series products,}
to operate down to a 1V input-to-output ^{but they do require input and output}
differential. In each of these products, the ^{capacitors. A minimum 10µF capacitor is}
dropout voltage is fully specified as a ^{required on the input and a 15µF or greater}
function of load current. Dropout is ^{on the output of these new devices for}
guaranteed at a maximum of 1.3V (8384A) ^{stability. Although, these capacitors are}
and 1.5V (8384) at maximum output ^{generally included in most regulator}
current, decreasing at lower load currents. ^designs.
In addition, on-chip trimming adjusts the ^{The LX8384/84A/84B Series quiescent}
reference voltage tolerance to 1% maximum ^{current flows into the load, thereby}
at room temperature and 2% maximum over ^{increasing efficiency. This feature contrasts}
the 0 to 125°C range for the LX8384A, ^{with PNP regulators where up to 10% of the}
making this ideal for the Pentium P54C- ^{output current is wasted as quiescent}
VRE specification. The LX8384B offers ^{current. The LX8384-xxI is specified over}
0.8% tolerance at room temperature and ^{the industrial temperature range of -25°C to}
1.0% maximum over line, load and ^{125°C, while the LX8384-xxC/84A-}
temperature. Fixed versions are also ^{xxC/84B-xxC is specified over the}
commercial range of 0°C to 125°C.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
IN
5V
+
*1500µF
6MV1500GX
Sanyo
LX8384A
ADJ
OUT
3.5V
at 5A
121Ω
0.1%
+
218Ω
0.1%
1500µF
5x 6MV1500GX
Sanyo
* Capacitors must have < 20mΩ
Total ESR for the VRE Specification
An Application of the LX8384A for the Pentium P54C Processors Meeting VRE Specification.
KEY FEATURES
ƒ Three-Terminal Adjustable Or
Fixed Output
ƒ Guaranteed < 1.3V Headroom a
5A (LX8384A)
ƒ Guaranteed 2.0% Max.
Reference Tolerance (LX8384A)
ƒ Guaranteed 1.0% Max.
Reference Tolerance (LX8384B)
ƒ 0.015% Line Regulation
ƒ 0.15% Load Regulation
APPLICATIONS
ƒ Pentium^® Processor VRE
Application
ƒ High Efficiency Linear
Regulators
ƒ Power Regulators For Switching
Power Supplies
ƒ Battery Chargers
ƒ Constant Current Regulators
ƒ Cyrix^® 6x86™
ƒ AMD-K5™
PART #
LX8384/84A/84B-00
OUTPUT
VOLTAGE
Adjustable
LX8384/84A/84B-15
1.5V
LX8384/84A/84B-33
3.3V
Table 1 - Available Options
PACKAGE ORDER INFO
T_A (°C)
Max Ref
Max Dropout DT
Plastic TO-252
(D-Pak) 3-Pin
Accuracy Voltage
RoHS Compliant
Transition DC: 0532
P
Plastic TO-220
3-Pin
DD
Plastic TO-263
3-Pin
RoHS Compliant
Transition DC: 0543
RoHS Compliant
Transition DC: 0535
2.0%
1.5V
LX8384-xxCDT
LX8384-xxCP
LX8384-xxCDD
0 to 125 2.0%
1.3V
LX8384A-xxCDT
LX8384A-xxCP
LX8384A-xxCDD
1.0%
-25 to 125 2.0%
1.3V
1.5V
LX8384B-xxCDT
LX8384-xxIDT
LX8384B-xxCP
LX8384-xxIP
LX8384B-xxCDD
LX8384-xxIDD
Copyright © 2000
Rev. 2.1f, 2006-01-20
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8384-xxCP-TR)
Microsemi Inc.
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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