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LTC1702IGN Datenblatt(PDF) 36 Page - Linear Technology

Teilenummer LTC1702IGN
Bauteilbeschribung  Dual 550kHz Synchronous 2-Phase Switching Regulator Controller
PDF  36 Pages
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1702IGN Datenblatt(HTML) 36 Page - Linear Technology

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LTC1702
1702f LT/TP 0100 4K • PRINTED IN USA
©LINEAR TECHNOLOGY CORPORATION 1999
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900q FAX:(408)434-0507 q www.linear-tech.com
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1530
High Power Synchronous Step-Down Controller
SO-8 with Current Limit. No RSENSE Required
LTC1625
No RSENSE
TM Current Mode Synchronous Step-Down Controller
Above 95% Efficiency, Needs No RSENSE, 16-Lead SSOP Package
Fits SO-8 Footprint
LTC1628
Dual High Efficiency 2-Phase Synchronous Step-Down Controller
Constant Frequency, Standby 5V and 3.3V LDOs, 3.5V
≤ VIN ≤ 36V
LTC1703
Dual 550kHz Synchronous 2-Phase Switching Regulator Controller LTC1702 with 5-Bit Mobile VID for Mobile Pentium
® Processor
with Mobile VID
Systems
LTC1706-81
VID Voltage Programmer
Adds 5-Bit Mobile VID to 0.8V Referenced Switching
Regulators
LTC1709
2-Phase, 5-Bit Desktop VID Synchronous Step-Down Controller
Current Mode, VIN to 36V, IOUT Up to 42A
LTC1736
Synchronous Step-Down Controller with 5-Bit Mobile VID Control
Fault Protection, PowerGood, 3.5V to 36V Input, Current Mode
LTC1753
5-Bit Desktop VID Programmable Synchronous
1.3V to 3.5V Programmable Output Using Internal 5-Bit DAC
Switching Regulator
LTC1873
Dual Synchronous Switching Regulator with 5-Bit Desktop VID
1.3V to 3.5V Programmable Core Output Plus I/O Output
LTC1929
2-Phase, Synchronous High Efficiency Converter
Current Mode Ensures Accurate Current Sensing,
VIN Up to 36V, IOUT Up to 40A
No RSENSE is a trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation.
Low Cost Dual Supply with 2.5V Keepalive
+
FB2
COMP2
RUN/SS2
FB1
COMP1
FCB
BOOST2
TG2
SW2
BG2
IMAX2
VCC
PVCC
SGND
PGND
LTC1702
4.75k
0.1%
0.1
µF
39pF
56pF
220pF
330pF
56k
20k
1%
16k
1%
QSS2
QSS1
CIN = SANYO 10MV1200GX (6 IN PARALLEL)
COUT1 = SANYO 6MV1500GX (8 IN PARALLEL)
COUT2 = SANYO 6MV1500GX (3 IN PARALLEL)
L1: 1
µH SUMIDA CEP125-1R0MC-H
L2: 2.2
µH COILTRONICS UP2B-2R2
VIN
5V
±10%
STBY/ON
1k
68k
1k
10k
0.1%
47k
QT2
MBR0530T
1
µF
QB2
QT1A
QT1B
MBR0530T
1
µF
COUT1
1702 TA04
+
COUT2
+
10
µF
+
CIN
1
µF
16.9k
0.1%
16.2k
0.1%
VOUT2
2.5V/7A
2.45V/100mA
STANDBY
VOUT1
1.8V
20A
10
L1
QB1A
QB1B
33k
FAULT
BOOST1
TG1
SW1
BG1
IMAX1
L2
IN
OUT
GND
LT1761
ADJ
RUN/SS1
QSS1, QSS2: MOTOROLA MMBT3904LT1
QT1A, QT1B, QB1A, QB1B: FAIRCHILD FDS6670A
QT2, QB2: 1/2 SILICONIX Si4966



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