LTC3728 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LTC3728 Datasheet PDF : 32 Pages
| |||
LTC3728
TYPICAL APPLICATIO
OPEN
0°
PHASMD TG1
180°
U1 TG2
LTC3729
90°
CLKOUT
90°
TG1
270°
U2 TG2
LTC3728
90°
PLLIN
IIN
I1
BUCK: 2.5V/15A
BUCK: 2.5V/15A
I2
I3
BUCK: 1.5V/15A
BUCK: 1.8V/15A
I4
12VIN
CIN
IIN*
2.5VO/30A
I1
I2
1.5VO/15A
1.8VO/15A
3728 F14
I3
I4
*INPUT RIPPLE CURRENT CANCELLATION
INCREASES THE RIPPLE FREQUENCY AND
REDUCES THE RMS INPUT RIPPLE CURRENT
THUS, SAVING INPUT CAPACITORS
Figure 14. Multioutput PolyPhase Application
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1530
High Power Step-Down Synchronous DC/DC Controller High Efficiency 5V to 3.3V Conversion at Up to 15A
in SO-8
LTC1628/LTC1628-PG/
LTC1628-SYNC
LTC1629/
LTC1629-PG
LTC1702
LTC1703
LTC1708-PG
LT1709/
LT1709-8
LTC1735
2-Phase, Dual Output Synchronous Step-Down
DC/DC Controller
20A to 200A PolyPhaseTM Synchronous Controllers
No RSENSE 2-Phase Dual Synchronous Step-Down
Controller
No RSENSE 2-Phase Dual Synchronous Step-Down
Controller with 5-Bit Mobile VID Control
2-Phase, Dual Synchronous Controller with Mobile VID
High Efficiency, 2-Phase Synchronous Step-Down
Switching Regulators with 5-Bit VID
High Efficiency Synchronous Step-Down
Switching Regulator
Reduces CIN and COUT, Power Good Output Signal, Synchronizable,
3.5V ≤ VIN ≤ 36V, IOUT up to 20A, 0.8V ≤ VOUT ≤ 5V
Expandable from 2-Phase to 12-Phase, Uses All
Surface Mount Components, No Heat Sink, VIN up to 36V
550kHz, No Sense Resistor
Mobile Pentium® III Processors, 550kHz,
VIN ≤ 7V
3.5V ≤ VIN ≤ 36V, VID Sets VOUT1, PGOOD
1.3V ≤ VOUT ≤ 3.5V, Current Mode Ensures
Accurate Current Sharing, 3.5V ≤ VIN ≤ 36V
Output Fault Protection, 16-Pin SSOP
LTC1736
High Efficiency Synchronous Controller with 5-Bit Mobile Output Fault Protection, 24-Pin SSOP,
VID Control
3.5V ≤ VIN ≤ 36V
LTC1778
No RSENSE Current Mode Synchronous Step-Down
Controller
Up to 97% Efficiency, 4V ≤ VIN ≤ 36V, 0.8V ≤ VOUT ≤ (0.9)(VIN),
IOUT up to 20A
LTC1929/
2-Phase Synchronous Controllers
Up to 42A, Uses All Surface Mount Components,
LTC1929-PG
No Heat Sinks, 3.5V ≤ VIN ≤ 36V
LTC3711
No RSENSE Current Mode Synchronous Step-Down
Controller with Digital 5-Bit Interface
Up to 97% Efficiency, Ideal for Pentium III Processors,
0.925V ≤ VOUT ≤ 2V, 4V ≤ VIN ≤ 36V, IOUT up to 20A
LTC3729
20A to 200A, 550kHz PolyPhase Synchronous Controller Expandable from 2-Phase to 12-Phase, Uses all Surface Mount
Components, VIN up to 36V
No RSENSE and PolyPhase are trademarks of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation.
3728fb
32 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LT 0406 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2006
Share Link: 