LTC3371_15 Datasheet, PDF (26/26 Pages) Linear Technology – 4-Channel 8A Configurable Buck DC/DCs with Watchdog and Power-On Reset

LTC3371
Typical Application
Combined Bucks with 3MHz Switching Frequency and Sequenced Power Up
2.25V TO 5.5V
1.2V
3A
3.3V TO 5.5V
3.3V
1A
MICROPROCESSOR
CONTROL
10µF
10µF
10µF
1µH
68µF _324k
649k
10µF
1µH
22µF 511k
162k
V_CC
V_INA
V_INB
V_INC
SWA
SWB
SWC
FB1
V_INH
V_ING
SWH
SWG
FB4
V_INF
V_IND LTC3371 V_INE
SWD
SWE
SWF
FB2
FB3
C1
V_CC
C2
C3
RST1
RST2
TEMP
RST3
PLL/MODE
RST4
EN1
WDO
EN2
WDI
EN3
CT
EN4
EXPOSED PAD
RT
2.25V TO 5.5V
10µF
10µF
1µH
649k
2V
47µF ^2A
432k
2.5V TO 5.5V
10µF
10µF
1µH
665k
309k
1M
2.5V
47µF
2A
2.7V TO 5.5V
10µF
MICROPROCESSOR
CONTROL
267k
3371 TA05
Related Parts
PART NUMBER DESCRIPTION
LTC3589
8-Output Regulator with
Sequencing and I²C
COMMENTS
Triple I²C Adjustable High Efficiency Step-Down DC/DC Converters: 1.6A, 1A, 1A. High Efficiency 1.2A
Buck-Boost DC/DC Converter, Triple 250mA LDO Regulators. Pushbutton On/Off Control with System
Reset, Flexible Pin-Strap Sequencing Operation. I²C and Independent Enable Control Pins, Dynamic
Voltage Scaling and Slew Rate Control. Selectable 2.25MHz or 1.12MHz Switching Frequency, 8µA
Standby Current, 40-Lead (6mm × 6mm × 0.75mm) QFN Package.
LTC3675
7-Channel Configurable High
Power PMIC
Quad Synchronous Buck Regulators (1A, 1A, 500mA, 500mA). Buck DC/DCs Can be Paralleled to
Deliver Up to 2× Current with a Single Inductor. 1A Boost, 1A Buck-Boost, 40V LED Driver. 44-Lead
(4mm × 7mm × 0.75mm) QFN Package.
LTC3676
8-Channel Power Management
Solution for Application
Processors
Quad Synchronous Buck Regulators (2.5A, 2.5A, 1.5A, 1.5A). Quad LDO Regulators
(300mA, 300mA, 300mA, 25mA). Pushbutton On/Off Control with System Reset. DDR Solution with
VTT and VTTR Reference. 40-Lead (6mm × 6mm × 0.75mm) QFN Package.
LTC3375
8-Channel Programmable
Configurable 1A DC/DC
8 × 1A Synchronous Buck Regulators. Can Connect Up to Four Power Stages in Parallel to Make a
Single Inductor, High Current Output (4A Maximum), 15 Output Configurations Possible, 48-Lead
(7mm × 7mm × 0.75mm) QFN Package.
LTC3374
8-Channel Programmable
Configurable 1A DC/DC
8 × 1A Synchronous Buck Regulators. Can Connect Up to Four Power Stages in Parallel to Make a
Single Inductor, High Current Output (4A Maximum), 15 Output Configurations Possible, 38-Lead
(5mm × 7mm × 0.75mm) QFN and TSSOP Packages.
LTC3370
4-Channel Configurable DC/DC
with 8 × 1A Power Stages
4 Synchronous Buck Regulators with 8 × 1A Power Stages. Can Connect Up to Four Power Stages
in Parallel to Make a Single Inductor, High Current Output (4A Maximum), 8 Output Configurations
Possible, Precision PGOODALL Indication, 32-Lead (5mm × 5mm × 0.75mm) QFN Package.
3371fa
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LT 0515 REV A • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2014