LTC3407A

PRODUCTION

LTC3407A

Dual Synchronous 600mA, 1.5MHz Step-Down DC/DC Regulator

PRODUCTION

Part Details

1mm High 2.5V/1.8V at 600mA Step-Down Regulators slide

LTC3407A Efﬁciency/Power Loss Curve slide

1mm High 2.5V/1.8V at 600mA Step-Down Regulators

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Part Models 8

1ku List Price Starting From $3.14

Features

High Efficiency: Up to 96%
Low Ripple (35mV_P-P) Burst Mode Operation; I_Q = 40μA
1.5MHz Constant Frequency Operation
No Schottky Diodes Required
Low R_DS(ON) Internal Switches: 0.35Ω
Current Mode Operation for Excellent Line and Load Transient Response
Short-Circuit Protected
Low Dropout Operation: 100% Duty Cycle
Ultralow Shutdown Current: I_Q < 1µA
Output Voltages from 5V down to 0.6V
Power-On Reset Output
Externally Synchronizable Oscillator
Optional External Soft-Start
Small Thermally Enhanced MSOP and 3mm × 3mm DFN Packages

Additional Details

The LTC3407A is a dual, constant frequency, synchronous step-down DC/DC converter. Intended for low power applications, it operates from a 2.5V to 5.5V input voltage range and has a constant 1.5MHz switching frequency, enabling the use of tiny, low cost capacitors and inductors 1mm or less in height. Each output voltage is adjustable from 0.6V to 5V. Internal synchronous 0.35Ω, 1A power switches provide high efficiency without the need for external Schottky diodes.

A user selectable mode input is provided to allow the user to trade-off ripple noise for low power efficiency. Burst Mode^® operation provides the highest efficiency at light loads, while Pulse Skip Mode provides the lowest ripple noise at light loads.

To further maximize battery life, the P-channel MOSFETs are turned on continuously in dropout (100% duty cycle), and both channels draw a total quiescent current of only 40µA. In shutdown, the device draws <1µA.


	b
LTC3407	2x 600mA	1.5MHz
LTC3407-2	2x 800mA	2.25MHz
LTC3407-3	2x 800mA	2.5MHz	Fixed 1.8V/3.3V
LTC3407-4	2x 800mA	2.25MHz	Reduced POR Delay
LTC3407A	2x 600mA	1.5MHz	Low Ripple Burst Mode
LTC3407A-2	2x 800mA	2.25MHz	Low Ripple Burst Mode

Applications

PDAs/Palmtop PCs
Digital Cameras
Cellular Phones
Wireless and DSL Modems

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 8

1ku List Price Starting From $3.14

Documentation

Technical Documents 3

LTC3407A: Dual Synchronous 600mA, 1.5MHz Step-Down DC/DC Regulator Data Sheet 10/08/2008

R415 Reliability Data 03/23/2018

DC1180A - Demo Manual 09/24/2009

Design Resources 8

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
LTC3407AEDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3407AEDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3407AEMSE#PBF	10-Lead MSOP w/ EP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3407AEMSE#TRPBF	10-Lead MSOP w/ EP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3407AIDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3407AIDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3407AIMSE#PBF	10-Lead MSOP w/ EP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3407AIMSE#TRPBF	10-Lead MSOP w/ EP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC3407AEDD#PBF
Pin/Package Drawing
10-Lead DFN (3mm x 3mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3407AEDD#TRPBF
Pin/Package Drawing
10-Lead DFN (3mm x 3mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3407AEMSE#PBF
Pin/Package Drawing
10-Lead MSOP w/ EP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3407AEMSE#TRPBF
Pin/Package Drawing
10-Lead MSOP w/ EP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3407AIDD#PBF
Pin/Package Drawing
10-Lead DFN (3mm x 3mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3407AIDD#TRPBF
Pin/Package Drawing
10-Lead DFN (3mm x 3mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3407AIMSE#PBF
Pin/Package Drawing
10-Lead MSOP w/ EP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3407AIMSE#TRPBF
Pin/Package Drawing
10-Lead MSOP w/ EP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

Filter by Model

Part Models

Product Lifecycle

PCN

Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3407AEMSE#PBF

PRODUCTION

LTC3407AEMSE#TRPBF

PRODUCTION

LTC3407AIMSE#PBF

PRODUCTION

LTC3407AIMSE#TRPBF

PRODUCTION

pdf

PCN20_0130_Form

xls

Material_Report

Filter by Model

Part Models

Product Lifecycle

PCN

Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3407AEMSE#PBF

PRODUCTION

LTC3407AEMSE#TRPBF

PRODUCTION

LTC3407AIMSE#PBF

PRODUCTION

LTC3407AIMSE#TRPBF

PRODUCTION

pdf

PCN20_0130_Form

xls

Material_Report

Software & Part Ecosystem

Companion Parts 4

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Single-Supply Monitors1
LTC2935	PRODUCTION	Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds
Surge Stopper, Overvoltage, and Overcurrent Protection1
LTC4365	RECOMMENDED FOR NEW DESIGNS	Overvoltage, Undervoltage and Reverse Supply Protection Controller

Evaluation Kit

DC1180A

LTC3407AEDD Demo Board | (DFN) 2.5 ≤ VIN ≤ 5.5V, VOUT1 = 1.2V/1.5V/1.8V @ 0.6A, VOUT2 = 2.5V/3.3V @ 0.6A

DC1180A

LTC3407AEDD Demo Board | (DFN) 2.5 ≤ VIN ≤ 5.5V, VOUT1 = 1.2V/1.5V/1.8V @ 0.6A, VOUT2 = 2.5V/3.3V @ 0.6A

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Product Detail

Demonstration circuit DC1180 is a dual output regulator consisting of two identical constant frequency step-down converters, based on the LTC3407A monolithic dual synchronous buck regulator in the 3 × 3 DFN-10 package. The LTC3407A is similar to the LTC3407 but has a lower ripple Burst Mode operation and includes an optional external soft-start. The DC1180 has an input voltage range of 2.5V to 5.5V, and either output is capable of delivering up to 600mA of output current. In Burst Mode^® operation, the DC supply current is typically only 25 µA (per channel) at no load, and less than 1 µA in shutdown. The DC1180 is a very efficient circuit: up to 96% for either circuit.

Resources

PDF

DC1180A - Demo Manual

495.00K

ZIP

DC1180A - Design File

629.00K

PDF

DC1180A - Schematic

28.00K

DC1180A

LTC3407AEDD Demo Board | (DFN) 2.5 ≤ VIN ≤ 5.5V, VOUT1 = 1.2V/1.5V/1.8V @ 0.6A, VOUT2 = 2.5V/3.3V @ 0.6A

Tools & Simulations

LTspice 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.