LT3470IDDB#TRPBF

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Analog Devices Inc./Maxim Integrated

MICROPOWER BUCK REGULATOR WITH INTEGRATED BOOST AND CATCH DIODES

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LT3470IDDB#TRPBF

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Analog Devices Inc./Maxim Integrated

MICROPOWER BUCK REGULATOR WITH INTEGRATED BOOST AND CATCH DIODES

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT3470 Series

The LT3470 is a micropower step-down DC/DC converter that integrates a 300mA power switch, catch diode and boost diode into low profile 3mm × 2mm DD and ThinSOT™packages. The LT3470 combines Burst Mode and continuous operation to allow the use of tiny inductor and capacitors while providing a low ripple output to loads of up to 200mA.With its wide input range of 4V to 40V, the LT3470 can regulate a wide variety of power sources, from 2-cell Li-Ion batteries to unregulated wall transformers and lead-acid batteries. Quiescent current in regulation is just 26µA in a typical application while a zero current shutdown mode disconnects the load from the input source, simplifying power management in battery-powered systems. Fast current limiting and hysteretic control protects the LT3470 and external components against shorted outputs, even at 40V input.Vin Min StartupSwitch CurrentLT34705.5V300mALT3470A4V400mAApplicationsAutomotive Battery RegulationPower for Portable ProductsDistributed Supply RegulationIndustrial SuppliesWall Transformer Regulation

Technical Specifications

Parameters and characteristics for this part

Specification	LT3470IDDB#TRPBF

Current - Output	200 mA
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	8-WFDFN Exposed Pad
Package Length	3 mm
Package Name	8-DFN
Package Width	2 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	40 V
Voltage - Input (Min)	4 V
Voltage - Output (Max)	16 V
Voltage - Output (Min/Fixed)	1.25 V

LT3470 Series

Part	Function	Mounting Type	Package Name	Number of Outputs	Voltage - Output (Max)	Output Type	Voltage - Input (Min)	Output Configuration	Package / Case	Synchronous Rectifier	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Topology	Current - Output	Operating Temperature (Min)	Operating Temperature (Max)	Qualification	Grade	Package Width	Package Length
Analog Devices Inc./Maxim Integrated LT3470HTS8#TRPBF	Step-Down	Surface Mount	TSOT-23-8	1	16 V	Adjustable	4 V	Positive	SOT-23-8 Thin TSOT-23-8	No	40 V	1.25 V	Buck	200 mA	-40 °C	150 °C
Analog Devices Inc./Maxim Integrated LT3470EDDB#TRPBF	Step-Down	Surface Mount	8-DFN	1	16 V	Adjustable	4 V	Positive	8-WFDFN Exposed Pad	No	40 V	1.25 V	Buck	200 mA	-40 °C 0 °C	85 °C	AEC-Q100	Automotive	2 mm	3 mm
Analog Devices Inc./Maxim Integrated LT3470IDDB#TRPBF	Step-Down	Surface Mount	8-DFN	1	16 V	Adjustable	4 V	Positive	8-WFDFN Exposed Pad	No	40 V	1.25 V	Buck	200 mA	-40 °C	125 °C			2 mm	3 mm
Analog Devices Inc./Maxim Integrated LT3470IDDB#TRMPBF	Step-Down	Surface Mount	8-DFN	1	16 V	Adjustable	4 V	Positive	8-WFDFN Exposed Pad	No	40 V	1.25 V	Buck	200 mA	-40 °C	125 °C			2 mm	3 mm
Analog Devices Inc./Maxim Integrated LT3470HDDB#TRPBF	Step-Down	Surface Mount	8-DFN	1	16 V	Adjustable	4 V	Positive	8-WFDFN Exposed Pad	No	40 V	1.25 V	Buck	200 mA	-40 °C	150 °C			2 mm	3 mm
Analog Devices Inc./Maxim Integrated LT3470ITS8#TRMPBF	Step-Down	Surface Mount	TSOT-23-8	1	16 V	Adjustable	4 V	Positive	SOT-23-8 Thin TSOT-23-8	No	40 V	1.25 V	Buck	200 mA	-40 °C	125 °C
Analog Devices Inc./Maxim Integrated LT3470HTS8#TRMPBF	Step-Down	Surface Mount	TSOT-23-8	1	16 V	Adjustable	4 V	Positive	SOT-23-8 Thin TSOT-23-8	No	40 V	1.25 V	Buck	200 mA	-40 °C	150 °C
Analog Devices Inc./Maxim Integrated LT3470ETS8#TRMPBF	Step-Down	Surface Mount	TSOT-23-8	1	16 V	Adjustable	4 V	Positive	SOT-23-8 Thin TSOT-23-8	No	40 V	1.25 V	Buck	200 mA	0 °C	85 °C	AEC-Q100	Automotive
Analog Devices Inc./Maxim Integrated LT3470HDDB#TRMPBF	Step-Down	Surface Mount	8-DFN	1	16 V	Adjustable	4 V	Positive	8-WFDFN Exposed Pad	No	40 V	1.25 V	Buck	200 mA	-40 °C	150 °C			2 mm	3 mm
Analog Devices Inc./Maxim Integrated LT3470ETS8#TRPBF	Step-Down	Surface Mount	TSOT-23-8	1	16 V	Adjustable	4 V	Positive	SOT-23-8 Thin TSOT-23-8	No	40 V	1.25 V	Buck	200 mA	-40 °C 0 °C	85 °C	AEC-Q100	Automotive

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R303 Reliability Data

LT3470: Micropower Buck Regulator with Integrated Boost and Catch Diodes Data Sheet (Rev.E)

Tape and Reel Packaging