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Datasheet Linear Technology LTC3371HFE#PBF

Manufacturer:Linear Technology
Series:LTC3371
Part Number:LTC3371HFE#PBF

4-Channel 8A Configurable Buck DC/DCs with Watchdog and Power-On Reset

Datasheets

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    FeaTures LTC3371 4-Channel 8A Configurable Buck DC/DCs with Watchdog and Power-On Reset DescripTion
    The LTC3371 is a highly flexible multioutput power supply IC. The device includes four synchronous buck converters, configured to share eight 1A power stages, each of which is powered from independent 2.25V to 5.5V inputs. The DC/DCs are assigned to one of eight power configurations via pin-strappable C1-C3 pins. The common buck switching frequency may be programmed with an external resistor, synchronized to an external oscillator, or set to a default internal 2MHz clock. The operating mode for all DC/DCs may be programmed for Burst Mode or forced continuous mode operation. The CT pin programs the timing parameters of four independent RST pins as well as the timing parameters of the watchdog timer. To reduce input noise, the buck converters are phased in 90 steps. Precision enable pin thresholds facilitate reliable power sequencing. The LTC3371 is available in low profile 38-lead 5mm 7mm QFN and TSSOP packages.
    L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 8 1A Buck Power Stages Configurable as 2, 3, or 4 Output Channels 8 Unique Output Configurations (1A to 4A Per Channel) Independent VIN Supplies for Each DC/DC (2.25V to 5.5V) Low Total No Load Supply Current: n 15A In Shutdown (All Channels Off) n 68A One Channel Active in Burst Mode Operatio 18A Per Additional Channel Enable Pin Thresholds for Autonomous Sequencing 1MHz to 3MHz RT Programmable Frequency (2MHz Default) or PLL Synchronization Temp Monitor Indicates Die Temperature CT Programmed Watchdog Timer Independent RST Pins Indicate Buck in Regulation 38-Lead 5mm 7mm QFN and TSSOP Packages applicaTions
    n General Purpose Multichannel Power Supplies: Automotive, Industrial, Distributed Power Systems Typical applicaTion
    100 90 2.7V TO 5.5V 2.25V TO 5.5V 2.2H VOUT1 = 1.2V/2A 324k 645k 2.25V TO 5.5V 2.2H 412k 475k VINA VINB SWA SWB FB1 EN1 RST1 VINC VIND SWC SWD FB2 EN2 RST2 PLL/MODE RT VINE VINF SWE SWF FB3 EN3 RST3 VING VINH SWG SWH FB4 EN4 RST4 2.25V TO 5.5V VOUT3 = 1.8V/2A 806k 649k 2.5V TO 5.5V VOUT4 = 2.5V/2A 665k 309k EFFICIENCY (%) VCC 80 70 60 50 40 Buck Efficiency vs ILOAD LTC3371 VOUT2 = 1.5V/2A 30 Burst Mode OPERATION SINGLE CHANNEL V = 3.3V 20 VIN = 1.8V DUAL CHANNEL OUT f OSC = 1MHz TRIPLE CHANNEL 10 L = 3.3H QUAD CHANNEL 0 1 10 100 1000 4000 LOAD CURRENT (mA)
    3371 TA01b C3 0 0 0 0 1 1 1 1 C2 0 0 1 1 0 0 1 1 C1 0 1 0 1 0 1 0 1 BUCK1 BUCK2 BUC ...

Manufacturer's Classification

Power Management Switching Regulator Step-Down (Buck) Regulators Internal Power Switch Buck

Other Names: LTC3371HFEPBF, LTC3371HFE PBF

Docket:
FeaTures LTC3371 4-Channel 8A Configurable Buck DC/DCs with Watchdog and Power-On Reset DescripTion
The LTC3371 is a highly flexible multioutput power supply IC. The device includes four synchronous buck converters, configured to share eight 1A power stages, each of which is powered from independent 2.25V to 5.5V inputs. The DC/DCs are assigned to one of eight power configurations via pin-strappable ...

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