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LT1580C Datasheet(PDF) 16 Page - Linear Technology

Part # LT1580C
Description  7A, Very Low Dropout Regulator
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1580C Datasheet(HTML) 16 Page - Linear Technology

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LT1580/LT1580-2.5
© LINEAR TECHNOLOGY CORPORATION 1995
TYPICAL APPLICATION
Dual Regulators Power Pentium Processor or Upgrade CPU
PART NUMBER
DESCRIPTION
COMMENTS
LTC
® 1266
Synchronous Switching Controller
>90% Efficient High Current Microprocessor Supply
LTC1267
Dual High Efficiency Synchronous Switching Regulator
>90% Efficiency with Fixed 5V, 3.3V or Adjustable Outputs
LTC1430
High Power Synchronous Step-Down Switching Regulator
>90% Efficient High Current Microprocessor Supply
LT1584
7A Low Dropout Fast Transient Response Regulator
For High Performance Microprocessors
LT1585
4.6A Low Dropout Fast Transient Response Regulator
For High Performance Microprocessors
LT1587
3A Low Dropout Fast Transient Response Regulator
For High Performance Microprocessors
RELATED PARTS
C1
220
µF
10V
C3
220
µF
10V
C10
1
µF
C9
220
µF
10V
C2
220
µF
10V
C5
0.33
µF
C11
22
µF
35V
LT1587
ADJ
VIN VOUT
–
+
I/O
SUPPLY
3.5V/3.3V
C8
0.1
µF
C4
0.33
µF
C6
0.01
µF
R3
110
Ω
1%
R11
10k
R2
470
Ω
R14, 2
Ω
R13
0.005
Ω*
R8
107
Ω
0.35%
R12
0.0075
Ω*
D1
1N4148
D2
1N4148
R4
178
Ω
1%
R1
10k
5V
5V
12V
R10
10k
R7
107
Ω
0.25%
R5
10k
E3
TO CPU
VOLTAGE
SELECT PIN
5V
R9
10k
R6
89.8
Ω
0.5%
Q1
ZVN4206
Q2
2N3904
Q3
2N7002
Q3
2N7002
1580 TA04
12V
1
3
2
CORE
SUPPLY
3.5V/2.5V
LT1006
C7
330
µF
6.3V
LT1580
4
5
VCONTROL
VPOWER
SENSE
VOUT
ADJ
*RESISTORS ARE IMPLEMENTED AS COPPER TRACES ON PCB
IF 1 OZ COPPER, TRACE WIDTHS ARE 0.05 INCH
IF 2 OZ COPPER, TRACE WIDTHS ARE 0.025 INCH
R13 IS 0.83 INCHES LONG, R12 IS 1.24 INCHES LONG
E3
0
1
CPU TYPE
P55C
P54C
+
+
+
+
+
+
158025fa LT/GP 0598 2K REV A • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 qFAX:(408)434-0507 q www.linear-tech.com



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