28
LTC1736
LINEAR TECHNOLOGY CORPORATION 1999
1736f LT/TP 1299 4K • PRINTED IN USA
TYPICAL APPLICATIO
U
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
12A Converter with FCB Tied to PGOOD for CPU Power; Optimized for Output Voltages of 1.3V to 1.6V
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
C
OSC
RUN/SS
I
TH
FCB
SGND
PGOOD
SENSE
–
SENSE
+
V
FB
V
OSENSE
VID0
VID1
TG
BOOST
SW
V
IN
INTV
CC
BG
PGND
EXTV
CC
VIDV
CC
VID4
VID3
VID2
LTC1736
1000pF
47pF
C
C1
330pF
PGOOD
C
OSC
47pF
C
C2
47pF
C
SS
01.
µ
F
R
C
33k
100k
INTV
CC
+
4.7
µ
F
1
µ
F
D
B
CMDSH-3
D1
MBRS340T3
C
IN
22
µ
F/30V
×
2
OS-CON
C
B
0.22
µ
F
M1
FDS6680A
L1
1.2
µ
H
R
SENSE
0.004
Ω
SGND
M2
FDS6680A
×
2
OUTPUT VOLTAGE
PROGRAMMING
C
OUT
: 4-180
µ
F/4V PANASONIC EEFUEOG181R (AS SHOWN)
3-470
µ
F/6.3V KEMIT T51CX447M006AS (ALTERNATE)
1-820
µ
F/4V SANYO 4 1-180
µ
F/4V PANASONIC EEFUE0G181R (ALTERNATE)
C
IN
: SANYO OS-CON 305C22M
L1: PANASONIC ETQP6RZ1RZ0HFA
10
Ω
OPTIONAL:
CONNECT
TO 5V
1736 TA02
+
C
OUT
180
µ
F/4V
×
4
V
OUT
1.35V TO 1.6V
12A
V
IN
4.75V TO 24V
+
10
Ω
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1147
High Efficiency Step-Down Controller
100% DC, Burst Mode Operation, SO-8
LTC1148HV/LTC1148
High Efficiency Synchronous Step-Down Controllers
100% DC, Burst Mode Operation, V
IN
< 20V
LTC1149
High Efficiency Synchronous Step-Down Controller
100% DC, Std Threshold MOSFETs, V
IN
< 48V
LTC1159
High Efficiency Synchronous Step-Down Controller
100% DC, Logic Level MOSFETs, V
IN
< 40V
LTC1265
1.2A Monolithic High Efficiency Step-Down Switching Regulator
100% DC, Burst Mode Operation, 14-Pin SO
LT1375/LT1376
1.5A 500kHz Step-Down Switching Regulators
High Efficiency, Constant Frequency, SO-8
LTC1435A
High Efficiency Synchronous Step-Down Controller, N-Ch Drive
Burst Mode Operation, 16-Pin Narrow SO
LTC1436A/LTC1436A-PLL High Efficiency Low Noise Synchronous Step-Down Converters, N-Ch Drive
Adaptive Power
TM
Mode, 20-Pin/24-Pin SSOP
LTC1474/LTC1475
Ultralow Quiescent Current Step-Down Monolithic Switching Regulators
I
Q
= 10
µ
A, 100% DC, 8-Pin MSOP
LTC1625/LTC1775
No R
SENSE
TM
Current Mode Synchronous Step-Down Controllers
Up to 97% Efficiency, Burst Mode Operation,
16-Pin SSOP
LTC1628
Dual High Efficiency 2-Phase Step-Down Controller
Antiphase Drive, 28-Pin SSOP Package
LTC1703
550kHz Dual Output Synchronous Step-Down DC/DC Controller
5-Bit, Mobile VID On Output 1, No R
SENSE
LTC1735
High Efficiency Synchronous Step-Down Controller, N-Ch Drive
Burst Mode Operation, 16-Pin Narrow SSOP
LTC1735-1
High Efficiency Step-Down Controller with Power Good
Output Fault Protection, 16-Pin SSOP and SO-8
Adaptive Power and No R
SENSE
are trademarks of Linear Technology Corporaton.