LT3470

Name: LT3470
Brand: Analog Devices
Price: 3.90 USD
Availability: InStock

PRODUCTION

Micropower Buck Regulator with Integrated Boost and Catch Diodes

Data Sheet (Rev. E) Product Selection Table

Part Models: 18
1ku List Price: Starting From $3.90

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Overview

Low Quiescent Current: 26µA at 12V_IN to 3.3V_OUT
Integrated Boost and Catch Diodes
Input Range: 4V to 40V
Low Output Ripple: <10mV
<1µA in Shutdown Mode
Output Voltage: 1.25V to 16V
200mA Output Current
Hysteretic Mode Control
- Low Ripple Burst Mode^® Operation at Light Loads
- Continuous Operation at Higher Loads

Solution Size as Small as 50mm²
Low Profile (0.75mm) 3mm × 2mm Thermally Enhanced 8-Lead DD and 1mm ThinSOT Packages
AEC-Q100 Qualified for Automotive Applications

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 Startup	Switch Current
LT3470	5.5V	300mA
LT3470A	4V	400mA

Applications

Automotive Battery Regulation
Power for Portable Products
Distributed Supply Regulation
Industrial Supplies
Wall Transformer Regulation

Part Models: 18
1ku List Price: Starting From $3.90

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT3470EDDB#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470EDDB#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470EDDB#WTRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470EDDB#WTRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470ETS8#TRMPBF	8-Lead SOT-23	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470ETS8#TRPBF	8-Lead SOT-23	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470HDDB#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470HDDB#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470HDDB#WTRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470HDDB#WTRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470HTS8#TRMPBF	8-Lead SOT-23	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470HTS8#TRPBF	8-Lead SOT-23	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470IDDB#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470IDDB#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470IDDB#WTRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470IDDB#WTRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470ITS8#TRMPBF	8-Lead SOT-23	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT3470ITS8#TRPBF	8-Lead SOT-23	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
Circuit Monitors 1
LTC2960	RECOMMENDED FOR NEW DESIGNS	36V Nano-Current Two-Input Voltage Monitor
Hot Swap Controllers 1
LTC4364	RECOMMENDED FOR NEW DESIGNS	Surge Stopper with Ideal Diode
Ideal Diodes and PowerPath Controllers 1
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection
Power System Management (PSM) & Sequencers 1
LTC2974	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement

Tools & Simulations

LTspice 1

LT3470 Demo Circuit - 40V µPower Buck Regulator (12V to 5V @ 200mA)

Models for the following parts are available in LTspice:

LT3470
LT3470A

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

ADALM2000 Power Booster Board

Buy Now View Details

Features and Benefits

ADALM2000 compatible
USB Type-C powered
Provides two outputs with increased current sourcing capabilities

Product Details

The AD-M2KPWR-EBZ is an ADALM2000 add-on board which increases the output current capability up to 700mA. This board can be also used as a standalone benchtop power supply with positive and negative outputs.

The AD-M2KPWR-EBZ is a USB Type C powered board capable to increase the output current of ADALM2000’s power supplies.

Inputs:

USB type C: 4 – 18 V (validated with RPI USB-C power supply - not provided in the kit), 20W (power supply permitting)
External (screw terminal connector): 4.5–18V; 20W (power supply permitting)

Switching between the inputs is done with a jumper.

Outputs: (2 control modes)

Two variable power supplies that track M2K user supplies:
1. 0V to 5V (400mA in USB power mode)
2. –5V to 0V (400mA in USB power mode)
Two variable power supplies, controlled from a potentiometer
1. 1.5V to 15V (up to 700mA if powered with 18V)
2. –15V to –1.5V (up to 700mA if powered with 18V)

APPLICATIONS

General-purpose electronic systems
Educational applications
Automated test equipment

Resources

User Guide for AD-M2KPWR-EBZ, ADALM2000 Power Booster Board
8/11/2021

ADALM2000 Power Booster Board

Buy Now View Details

Features and Benefits

ADALM2000 compatible
USB Type-C powered
Provides two outputs with increased current sourcing capabilities

Product Details

The AD-M2KPWR-EBZ is a USB Type C powered board capable to increase the output current of ADALM2000’s power supplies.

Inputs:

USB type C: 4 – 18 V (validated with RPI USB-C power supply - not provided in the kit), 20W (power supply permitting)
External (screw terminal connector): 4.5–18V; 20W (power supply permitting)

Switching between the inputs is done with a jumper.

Outputs: (2 control modes)

Two variable power supplies that track M2K user supplies:
1. 0V to 5V (400mA in USB power mode)
2. –5V to 0V (400mA in USB power mode)
Two variable power supplies, controlled from a potentiometer
1. 1.5V to 15V (up to 700mA if powered with 18V)
2. –15V to –1.5V (up to 700mA if powered with 18V)

APPLICATIONS

General-purpose electronic systems
Educational applications
Automated test equipment

Resources

User Guide for AD-M2KPWR-EBZ, ADALM2000 Power Booster Board
8/11/2021

LT3470ETS8 Demo Board | (TSOT) 7V ≤ VIN ≤ 40V, VOUT = 5V @ 200mA, Integrated Boost & Catch Diodes

Buy Now View Details

Product Details

Demonstration circuit 716 is a 40V micropower SOT-23 buck regulator featuring the LT3470. The board is optimized for 5V output at up to 200mA load current for a steady state input voltage range of 7V to 40V. The LT3470 hysteretic control scheme allows all of the components to be small, surface mount devices while providing minimum output ripple voltage at all load currents.

Resources

Dc716 - Schematic
4/14/2010

DC716B - Design Files
4/14/2010

DC716B - Demo Manual
4/14/2010

LT3470ETS8 Demo Board | (TSOT) 7V ≤ VIN ≤ 40V, VOUT = 5V @ 200mA, Integrated Boost & Catch Diodes

Buy Now View Details

Product Details

Resources

Dc716 - Schematic
4/14/2010

DC716B - Design Files
4/14/2010

DC716B - Demo Manual
4/14/2010

LT3470EDDB Demo Board | (DFN) 5.5V ≤ VIN ≤ 40V, VOUT = 5V @ 200mA, Integrated Boost and Catch Diodes

Buy Now View Details

Product Details

Demonstration circuit 1037 is a 40V micropower DFN buck regulator featuring the LT3470. The board is optimized for 5V output at up to 200mA load current for a steady state input voltage range of 5.5V to 40V. With its wide input voltage range, high efficiency internal power switch, low dropout operation, hysteretic current-mode, integrated boost and catch diodes and tiny SOT-23 package, the LT3470 is a very versatile and powerful IC for DC/DC converters that require extremely compact space, high efficiency and high input voltage.