LTC3374AHUHF#TRPBF

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Analog Devices Inc./Maxim Integrated

CONV DC-DC 2.25V TO 5.5V SYNCHRONOUS STEP DOWN OCTAL-OUT 0.8V TO 5.5V 1A/1A/1A/1A/1A/1A/1A/1A 38-PIN QFN EP T/R

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LTC3374AHUHF#TRPBF

Active

Analog Devices Inc./Maxim Integrated

CONV DC-DC 2.25V TO 5.5V SYNCHRONOUS STEP DOWN OCTAL-OUT 0.8V TO 5.5V 1A/1A/1A/1A/1A/1A/1A/1A 38-PIN QFN EP T/R

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3374A Series

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

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3374AHUHF#TRPBF

Current - Output	1 A
Frequency - Switching	2 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	8
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	38-WFQFN Exposed Pad
Package Length	5 mm
Package Name	38-QFN
Package Width	7 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	5.5 V
Voltage - Input (Min)	2.7 V
Voltage - Output (Max)	5.5 V
Voltage - Output (Min/Fixed)	0.8 V

LTC3374A Series

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

Part	Voltage - Output (Min/Fixed)	Current - Output	Voltage - Input (Min)	Frequency - Switching	Function	Package Width	Package Name	Package Length	Mounting Type	Synchronous Rectifier	Output Type	Package / Case	Number of Outputs	Output Configuration	Topology	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Output (Max)	Voltage - Input (Max)	Package Features
Analog Devices Inc./Maxim Integrated LTC3374AIUHF#TRPBF	0.8 V	1 A	2.7 V	2 MHz	Step-Down	7 mm	38-QFN	5 mm	Surface Mount	No	Adjustable	38-WFQFN Exposed Pad	8	Positive	Buck	125 °C	-40 °C	5.5 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC3374AHFE#TRPBF	0.8 V	1 A	2.7 V	2 MHz	Step-Down	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Surface Mount	No	Adjustable		8	Positive	Buck	150 °C	-40 °C	5.5 V	5.5 V	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3374AIFE#PBF	0.8 V	1 A	2.7 V	2 MHz	Step-Down	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Surface Mount	No	Adjustable		8	Positive	Buck	125 °C	-40 °C	5.5 V	5.5 V	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3374AHFE#PBF	0.8 V	1 A	2.7 V	2 MHz	Step-Down	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Surface Mount	No	Adjustable		8	Positive	Buck	150 °C	-40 °C	5.5 V	5.5 V	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3374AEFE#TRPBF	0.8 V	1 A	2.7 V	2 MHz	Step-Down	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Surface Mount	No	Adjustable		8	Positive	Buck	125 °C	-40 °C	5.5 V	5.5 V	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3374AHUHF#TRPBF	0.8 V	1 A	2.7 V	2 MHz	Step-Down	7 mm	38-QFN	5 mm	Surface Mount	No	Adjustable	38-WFQFN Exposed Pad	8	Positive	Buck	150 °C	-40 °C	5.5 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC3374AIUHF#PBF	0.8 V	1 A	2.7 V	2 MHz	Step-Down	7 mm	38-QFN	5 mm	Surface Mount	No	Adjustable	38-WFQFN Exposed Pad	8	Positive	Buck	125 °C	-40 °C	5.5 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC3374AEUHF#PBF	0.8 V	1 A	2.7 V	2 MHz	Step-Down	7 mm	38-QFN	5 mm	Surface Mount	No	Adjustable	38-WFQFN Exposed Pad	8	Positive	Buck	125 °C	-40 °C	5.5 V	5.5 V
Analog Devices Inc./Maxim Integrated LTC3374AEFE#PBF	0.8 V	1 A	2.7 V	2 MHz	Step-Down	4.4 mm	38-TFSOP 38-TSSOP-EP	0.173 in	Surface Mount	No	Adjustable		8	Positive	Buck	125 °C	-40 °C	5.5 V	5.5 V	Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3374AHUHF#PBF	0.8 V	1 A	2.7 V	2 MHz	Step-Down	7 mm	38-QFN	5 mm	Surface Mount	No	Adjustable	38-WFQFN Exposed Pad	8	Positive	Buck	150 °C	-40 °C	5.5 V	5.5 V

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3374A: High Accuracy 8-Channel Parallelable 1A Buck DC/DCs Data Sheet (Rev.A)

R415 Reliability Data