LTC3374A Series

High Accuracy 8-Channel Parallelable 1A Buck DC/DCs

Catalog

High Accuracy 8-Channel Parallelable 1A Buck DC/DCs

Part	Output Configuration	Function	Frequency - Switching	Voltage - Input (Max) [Max]	Mounting Type	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Package / Case	Voltage - Input (Min) [Min]	Voltage - Output (Max) [Max]	Voltage - Output (Min/Fixed)	Number of Outputs	Current - Output	Supplier Device Package
Analog Devices LTC3374AIUHF#TRPBF	Positive	Step-Down	2 MHz	5.5 V	Surface Mount	Adjustable	-40 °C	125 ¯C	Buck	38-WFQFN Exposed Pad	2.7 V	5.5 V	0.8 V	8	1 A
Analog Devices LTC3374IFE#TRPBF	Positive	Step-Down	2 MHz	5.5 V	Surface Mount	Adjustable	-40 °C	150 °C	Buck	38-TFSOP	2.7 V	5.5 V	0.8 V	8	1 A	38-TSSOP-EP
Analog Devices LTC3374EFE#PBF	Positive	Step-Down	2 MHz	5.5 V	Surface Mount	Adjustable	-40 °C	150 °C	Buck	38-TFSOP	2.7 V	5.5 V	0.8 V	8	1 A	38-TSSOP-EP
Analog Devices LTC3374IUHF#PBF	Positive	Step-Down	2 MHz	5.5 V	Surface Mount	Adjustable	-40 °C	150 °C	Buck	38-WFQFN Exposed Pad	2.7 V	5.5 V	0.8 V	8	1 A
Analog Devices LTC3374EFE	Positive	Step-Down	2 MHz	5.5 V	Surface Mount	Adjustable	-40 °C	150 °C	Buck	38-TFSOP	2.7 V	5.5 V	0.8 V	8	1 A	38-TSSOP-EP
Analog Devices LTC3374HFE#PBF	Positive	Step-Down	2 MHz	5.5 V	Surface Mount	Adjustable	-40 °C	150 °C	Buck	38-TFSOP	2.7 V	5.5 V	0.8 V	8	1 A	38-TSSOP-EP
Analog Devices LTC3374IFE#PBF	Positive	Step-Down	2 MHz	5.5 V	Surface Mount	Adjustable	-40 °C	150 °C	Buck	38-TFSOP	2.7 V	5.5 V	0.8 V	8	1 A	38-TSSOP-EP
Analog Devices LTC3374HUHF#PBF	Positive	Step-Down	2 MHz	5.5 V	Surface Mount	Adjustable	-40 °C	150 °C	Buck	38-WFQFN Exposed Pad	2.7 V	5.5 V	0.8 V	8	1 A
Analog Devices LTC3374AHFE#PBF	Positive	Step-Down	2 MHz	5.5 V	Surface Mount	Adjustable	-40 °C	150 °C	Buck	38-TFSOP	2.7 V	5.5 V	0.8 V	8	1 A	38-TSSOP-EP
Analog Devices LTC3374EUHF#PBF	Positive	Step-Down	2 MHz	5.5 V	Surface Mount	Adjustable	-40 °C	150 °C	Buck	38-WFQFN Exposed Pad	2.7 V	5.5 V	0.8 V	8	1 A

Catalog

High Accuracy 8-Channel Parallelable 1A Buck DC/DCs

Key Features

• 8-Channel 1A Independent Step-Down DC/DCs

• Master-Slave Configurable for Up to 4A of Output Current with a Single Inductor

• Independent VINSupplies for Each DC/DC (2.25V to 5.5V)

• All DC/DCs Have 0.8V to VINOutput Range

• ±1% VFBAccuracy, for Buck 1 (1A to 4A)

• ±1% PGOOD Accuracy

• Precision Enable Pin Thresholds for Autonomous Sequencing

• 1MHz to 3MHz Programmable/Synchronizable Oscillator Frequency (2MHz Default)

• Die Temperature Monitor Output

• Thermally Enhanced 38-Lead 5mm × 7mm QFN and TSSOP Packages

• Pin-Compatible with LTC3374

• AEC-Q100 Qualified for Automotive Applications

Description

The LTC3374A is a multioutput power supply IC consisting of eight synchronous 1A buck converters, all powered from independent 2.25V to 5.5V input supplies. An upgraded pin-compatible version of the LTC3374, the LTC3374A, has higher efficiency, improved output voltage accuracy and an added overvoltage (OV) indicator.The DC/DCs may be used independently or in parallel to achieve higher output currents of up to 4A with a shared inductor. 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 via the MODE pin.To reduce input noise the buck converters are phased in 90° steps. Precision enable pin thresholds simplify powerup sequencing. The LTC3374A is available in a 38-lead 5mm × 7mm QFN package as well as a 38-lead exposed pad TSSOP package.NOTESLTC3374LTC3374AHigher efficiency, improved output voltage accuracy and an added overvoltage (OV) indicatorAPPLICATIONSGeneral Purpose Multichannel Power SuppliesIndustrial/Automotive/Communications