LT1575/LT1577
TYPICAL APPLICATION
INPUT
5V
C1 +
330µF
6.3V
12V
C4
1µF
FAULT RESET
C3
0.33µF
1/2 LT1577
1
16
SHDN1 IPOS1
2
VIN1
3
GND1
15
INEG1
14
GATE1
4
13
OUT-3.3 COMP1
C5
10pF
LT1577 Split Plane System
R1
3.9Ω
R2
3.9k
C6
1500pF
Q1
IRFZ24
VI/O
3.3V
C9 TO
C20*
1µF
1/2 LT1577
5
12
SHDN2 IPOS2
6
VIN2
7
GND2
11
INEG2
10
GATE2
8
9
OUT-2.8 COMP2
C7
10pF
+ C2
330µF
6.3V
R5
3.9Ω
R6
7.5k
C8
1000pF
Q2
IRFZ24
VCORE
2.8V
C21 TO
C44*
1µF
*X7R CERAMIC 0805 CASE
1575/77 TA15
RELATED PARTS
PART NUMBER
LTC1266
DESCRIPTION
Current Mode, Step-Up/Down Switching Regulator Controller
LTC1392
LTC1430
LTC1435
LTC1553
Micropower Temperature, Power Supply and Differential
Voltage Monitor
High Power Step-Down Switching Regulator Controller
High Efficiency, Low Noise Synchronous Step-Down
Switching Regulator
Digitally Controlled Synchronous Switching Regulator Controller
LTC1553L
Digitally Controlled Synchronous Switching Regulator Controller
LT1573
Low Dropout Regulator Driver
LT1580
LT1585-1.5
7A, Very Low Dropout Linear Regulator
Fixed 1.5V, 5A Low Dropout Fast Response Regulator
COMMENTS
Synchronous N- or P-Channel FETs, Comparator/Low
Battery Detector
Temperature to Bits Control
Voltage Mode, 5V to 3.xxV at >10A
Current Mode with Wide Input Voltage Range
Controller for Pentium II Processor, Buck Conversion
from 5V or 12V Main Power
Controller for Pentium II Processor, Buck Conversion
from 5V Main Power
Drives Low Cost PNP Transistor for High Power,
Low Dropout Applications
0.54V Dropout at 7A, Fixed 2.5VOUT and Adjustable
GTL+ Regulator
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 qFAX:(408)434-0507 q www.linear-tech.com
15757f LT/TP 0598 4K • PRINTED IN THE USA
© LINEAR TECHNOLOGY CORPORATION 1996