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LX8384/84A/84B-00 PDF预览

LX8384/84A/84B-00

更新时间： 2024-09-15 03:00:31
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美高森美 - MICROSEMI 稳压器
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11页 143K
描述
5A Low Dropout Positive Regulators

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LX8384/84A/84B-00 数据手册

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LX8384x-xx  
ꢀꢁꢂꢃꢁꢂꢁꢄꢅꢆ  
5A Low Dropout Positive Regulators  
A
M I C R O S E M I  
C O M P A N Y  
PRODUCTION  
available and specified in the Available  
Options table below.  
Three-Terminal Adjustable Or  
Fixed Output  
Guaranteed < 1.3V Headroom a  
5A (LX8384A)  
Guaranteed 2.0% Max.  
Reference Tolerance (LX8384A)  
Guaranteed 1.0% Max.  
Reference Tolerance (LX8384B)  
0.015% Line Regulation  
0.15% Load Regulation  
The LX8384/84A/84B Series ICs are  
positive regulators designed to provide 5A  
output current. These regulators yield  
higher efficiency than currently available  
devices with all internal circuitry designed  
to operate down to a 1V input-to-output  
differential. In each of these products, the  
dropout voltage is fully specified as a  
function of load current. Dropout is  
guaranteed at a maximum of 1.3V (8384A)  
and 1.5V (8384) at maximum output  
current, decreasing at lower load currents.  
In addition, on-chip trimming adjusts the  
reference voltage tolerance to 1% maximum  
at room temperature and 2% maximum over  
the 0 to 125°C range for the LX8384A,  
making this ideal for the Pentium P54C-  
VRE specification. The LX8384B offers  
0.8% tolerance at room temperature and  
1.0% maximum over line, load and  
The LX8384/84A/84B Series devices are  
pin-compatible with earlier 3-terminal  
regulators, such as the 117 series products,  
but they do require input and output  
capacitors. A minimum 10µF capacitor is  
required on the input and a 15µF or greater  
on the output of these new devices for  
stability. Although, these capacitors are  
generally included in most regulator  
designs.  
The LX8384/84A/84B 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 LX8384-xxI is specified over  
the industrial temperature range of -25°C to  
125°C, while the LX8384-xxC/84A-  
xxC/84B-xxC is specified over the  
commercial range of 0°C to 125°C.  
Mcrosemi  
.
Pentium® Processor VRE  
Application  
High Efficiency Linear  
Regulators  
Power Regulators For Switching  
Power Supplies  
Battery Chargers  
temperature.  
Fixed versions are also  
Constant Current Regulators  
Cyrix® 6x86™  
AMD-K5™  
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com  
IN  
OUT  
3.5V  
5V  
LX8384A  
at 5A  
+
LX8384/84A/84B-00  
LX8384/84A/84B-15  
LX8384/84A/84B-33  
Adjustable  
1.5V  
Ω
121  
*1500µF  
0.1%  
6MV1500GX  
Sanyo  
ADJ  
+
1500µF  
5x 6MV1500GX  
Sanyo  
3.3V  
Ω
218  
0.1%  
Table 1  
- Available Options  
Ω
* Capacitors must have < 20m  
Total ESR for the VRE Specification  
An Application of the LX8384A for the Pentium P54C Processors Meeting VRE Specification.  
Max Ref Max Dropout  
Plastic TO-220 Plastic TO-263  
DD  
3-Pin 3-Pin  
Plastic TO-252  
(D-Pak) 3-Pin  
TA (°C)  
DT  
P
Accuracy  
Voltage  
0 to 125  
2.0%  
2.0%  
1.0%  
1.5V  
1.3V  
1.3V  
1.5V  
LX8384-xxCDT  
LX8384A-xxCDT  
LX8384B-xxCDT  
LX8384-xxIDT  
LX8384-xxCP  
LX8384-xxCDD  
LX8384A-xxCDD  
LX8384B-xxCDD  
LX8384-xxIDD  
LX8384A-xxCP  
LX8384B-xxCP  
LX8384-xxIP  
-25 to 125 2.0%  
Note: Available in Tape & Reel.  
Append the letter “T” to the part number. (i.e. LX8384-xxCPT)  
Copyright 2000  
Rev. 2.1d, 2001-03-15  
Microsemi  
Page 1  
Linfinity Microelectronics Division  
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570  
1234567...11

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