24
LTC1753
1753fa
LT/TP 1201 1.5K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1998
PART NUMBER DESCRIPTION COMMENTS
LTC1530 High Power Synchronous Step-Down Controller SO-8 with Current Limit, No R
SENSE
TM
Saves Space, Fixed Frequency
Ideal for 5V to 3.3V or Lower
LTC1628 Dual High Efficiency Low Noise Synchronous Step-Down Constant Frequency, Standby 5V and 3.3V LDOs, 3.5V ≤ V
IN
≤ 36V
Switching Regulator
LTC1553L 5-Bit Programmable Synchronous Switching Regulator DAC Code Conforms to the Intel Pentium II Processor VRM8.2
Controller for Pentium II Processor DC/DC Converter Specification
LT1585-1.5 Fixed 1.5V, 4.6A and 5A Low Dropout, GTL+ Power Supplies
Fast Response GTL+ Regulators
LTC1629 PolyPhase
TM
High Efficiency Controller Expandable Up to 12 Phases, 28-Lead SSOP, Up to 200A
LTC1703 2-Phase, Dual Synchronous Controller with VID Mobile VID Code, Each Output Up to 15A, V
IN
= 5V for I/O and Core
LTC1706-81 5-Bit VID Programmer Desktop Pentium III Processors, V
IN
≤ 7V
LTC1709 High Efficiency, Synchronous Step-Down Switching Regulator Current Mode, V
IN
to 36V, I
OUT
Up to 42A
with 5-Bit VID
LTC1735 High Efficiency Low Noise Synchronous Step-Down Drives Synchronous N-Channel FETs, V
IN
≤ 36V
Switching Regulator
LTC1772 SOT-23 Step-Down Controller 100% Duty Cycle, Up to 4A, 2.2V to 9.8V V
IN
LTC1873 Dual 550kHz Synchronous 2-Phase Switching Regulator Desktop VID Codes, I
OUT
Up to 25A on Each Channel, 28-Lead SSOP
Controller with 5-Bit VID
LTC1929 2-Phase, High Efficiency, Synchronous Step-Down Current Mode Ensures Accurate Current Sensing, V
IN
Up to 36V,
Switching Regulator I
OUT
Up to 42A, 28-Lead SSOP
No R
SENSE
and PolyPhase are trademarks of Linear Technology Corporation.
RELATED PARTS
Figure 11. Single Supply LTC1753 5V to 1.3V-3.5V Application with Thermal Monitor
PWRGD
FAULT
VID0 TO VID4
OUTEN
COMP
SS
SGND SENSE
Q1*
Q2*
V
CC
PV
CC
V
IN
5V
L
O
†
1.3µH
14A
LTC1753
G1
I
FB
G2
V
FB
1µF
5V
1.8k
1753 F11
C
C
4700pF
R
C
15k
5.6k
5.6k
C
SS
0.1µF
0.1µF
20Ω
10µF
GND
I
MAX
820Ω
C
IN
**
1200µF
× 3
V
OUT
14A
C
OUT
††
2700µF
× 5
+
+
C1
150pF
+
5
CPU
DALE
NTHS-1206N02
MOUNT THERMISTER
IN CLOSE THERMAL
PROXIMITY TO Q1
270pF
1N5817
0.1µF
* SILICONIX Si4410
** SANYO 10MV1200GX
†
PANASONIC ETQP 6FIR3LFA
††
SANYO 6MV2700GX
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
TYPICAL APPLICATIO
U
