LTC1775 LINER [Linear Technology], LTC1775 Datasheet - Page 24

• Manufacturer Part Number: LTC1775
• Description: High Power No RSENSE TM Current Mode Synchronous Step-Down Switching Regulator
• Manufacturer: LINER [Linear Technology]

RELATED PARTS
LTC1775
TYPICAL APPLICATIO S
PART NUMBER
LT1339
LTC1436A-PLL
LTC1438
LTC1530
LTC1538-AUX
LTC1625
LTC1628
LTC1629
LTC1649
LTC1702
LTC1735
PolyPhase is a trademark of Linear Technology Corporation.
24
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
DESCRIPTION
High Power Synchronous DC/DC Controller
High Efficiency Low Noise Synchronous Step-Down Controller
Dual High Efficiency Step-Down Controller
High Power Synchronous Step-Down Controller
Dual High Efficiency Step-Down Controller
No R
Dual High Efficiency 2-Phase Step-Down Controller
PolyPhase
3.3V Input High Power Step-Down Controller
Dual 2-Phase High Frequency, High Efficiency Voltage Mode
Synchronous Step-Down Controller
High Efficiency Synchronous Step-Down Controller
2.2nF
C
C1
SENSE
0.1 F
C
SS
TM
Current Mode Synchronous Step-Down Controller
10k
R
High Efficiency Step-Down Controller
C
220pF
C
C2
INTV
OPEN
CC
C
C
L1: SUMIDA CDRH127-6R1
U
IN
OUT
: KEMET T495X156M035AS
1
2
3
4
5
6
7
8
: KEMET T510X687K004AS
EXTV
SYNC
V
RUN/SS
FCB
I
SGND
V
TH
PROG
OSENSE
CC
LTC1775
INTV
BOOST
PGND
2.5V/5A Adjustable Output
SW
V
BG
TG
TK
CC
IN
16
15
14
13
12
11
10
9
+
D
CMDSH-3
C
0.1 F
C
4.7 F
B
F
VCC
1
R
COMMENTS
60V Maximum Input Voltage
PLL Synchronization and Auxiliary Linear Regulator
Power-On Reset and Low-Battery Comparator
SO-8 with Current Limit, No R
Frequency Ideal for 5V to 3.3V
5V Standby Output and Auxiliary Linear Regulator
Burst Mode Operation, 16-Lead GN Package
Antiphase Drive, Standby 5V and 3.3V LDO, Fault Protection,
V
Current Mode Ensures Accurate Current Sharing,
Expandable Up to 200A, V
2.7V to 5V Input, 90% Efficiency, Ideal for 3.3V to 1.xV – 2.xV
Up to 20A
500kHz; V
I
Output Fault Protection, 16-Pin GN Package, 4V V
F
OUT1
IN
0.22 F
Up to 36V
C
, I
B
5V TO 25V
OUT2
V
IN
IN
M1
1/2 FDS8936A
M2
1/2 FDS8936A
as High as 20A; No Sense Resistor Required
Up to 7V; V
MBRS140
D1
6.1 H
L1
OUT1
IN
Up to 36V
, V
1775 TA03
LINEAR TECHNOLOGY CORPORATION 1999
+
SENSE
OUT2
R2
11k
1%
R1
10k
1%
1775f LT/TP 0500 4K • PRINTED IN USA
C
15 F
35V
IN
Saves Space, Fixed
3
as Low as 2.x, 1.x,
+
C
680 F
4V
OUT
2
V
2.5V
5A
OUT
IN
36V