LTC1704 Linear Technology, LTC1704 Datasheet - Page 28

• Manufacturer Part Number: LTC1704
• Description: 550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller
• Manufacturer: Linear Technology

LTC1704/LTC1704B
TYPICAL APPLICATIO
28
RELATED PARTS
PART NUMBER
LTC1530
LTC1628
LTC1699
LTC1703
LTC1705
LTC1706-81
LTC1706-82
LTC1736
LTC1778
LTC3701
No R
SENSE
is a trademark of Linear Technology Corporation.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
V
1.3V TO 3.5V
IN
5
9
V
VID0
OUTSW
V
GND
CC
15A
VID1
DESCRIPTION
High Power Synchronous Step-Down Controller
Dual High Efficiency 2-Pass Synchronous Step-Down Controller
SMBus VID Voltage Programmers
Dual 550kHz Synchronous 2-Phase Switching Regulator
Controller with VID
Dual 550kHz Synchronous Switching Regulator Controller
with 5-Bit VID Plus LDO
5-Bit Desktop VID Programmer
VID Programmer for Intel VRM9.0
Synchronous Step-Down Controller with 5-Bit VID Control
No R
2-Phase, Low V
LTC1706-81
V
5V
FROM P
IN
SENSE
VID2
SENSE
6
VID3
+
330 F
Current Mode Synchronous Step-Down Controller
10V
VID4
C
IN
C
180 F
4V
3
FB
OUTSW
6
IN
+
, Dual Step-Down Controller
10
U
0.68 H
1800pF
L1
C3
QBB
www.linear.com
QTA
R3
1.8k
1 F
C
C
L1: SUMIDA CEP125-4712-T007
QTA, QTB, QBA, QBB: FAIRCHILD FDS6670A
IN
OUTSW
C1
1800pF
: KEMET T510X337K010AS
VID Controlled Power Supply
: PANASONIC EEFUE0G181R
QBA
QTB
11k
R4
MBR0520LT1
R
13.7k
C2
330pF
MAX
C
1 F
CP
14
13
1
2
3
6
5
D
CP
TG
SW
BG
I
PGND
FB
COMP
BOOST
MAX
16
LTC1704
PV
COMMENTS
SO-8 with Current Limit, No R
Constant Frequency, Standby 5V and 3.3V LDOs,
3.5V V
SMBus Interface, Intel 5-Bit Mobile, Intel Desktop VID Codes
VRM8.4 and VRM9.0
VID Control with 25MHz GBW Voltage Mode, V
VID Control with 20MHz GBW Voltage Mode, V
Parallel Interface, 0.8V Reference Intel Desktop VID Codes
(VRM8.4)
Parallel Interface, 0.8V Reference Intel Desktop VID Codes
(VRM9.0)
Output Fault Protection, Power Good Output, 3.5V to 36V Input
Up to 97% Efficiency, 4V V
0.8V V
2.5V V
16-Lead SSOP Package
CC
15
10
REGILM
RUN/SS
PGOOD
REGDR
REGFB
V
CC
GND
IN
OUT
IN
11
36V
9.8V, 550kHz Operation, Minimum C
12
10
4
8
7
9
(0.9)(V
1 F
C
0.1 F
R5
1.69k
R6
806
SS
IN
5k
), I
OUT
LINEAR TECHNOLOGY CORPORATION 2001
+
IN
LT/TP 0303 1K REV A • PRINTED IN USA
QEXT
ON SEMICONDUCTOR
D44H11
SENSE
R
470k
Up to 20A
+
REGILM
C
100 F
TANT
OUTREG
36V,
1704 TA02
TM
C
1000pF
10 F
DELAY
Required
3.3V
+
V
2.5V
2A
OUTREG
10 F
IN
IN
IN
7V
6V
,
1704bfa