LTC3407

RECOMMENDED FOR NEW DESIGNS

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

Part Models: 4
1ku List Price: Starting From $3.45

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Part Details

High Efficiency: Up to 96%
Very Low Quiescent Current: Only 40µA
1.5MHz Constant Frequency Operation
High Switch Current: 1A on Each Channel
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 Sychronizable Oscillator
Small Thermally Enhanced MSOP Package and 3mm x 3mm DFN Packages

The LTC3407 is a dual, constant frequency, synchronous step down DC/DC converter. Intended for low power applications, it operates from 2.5V to 5.5V input voltage range and has a constant 1.5MHz switching frequency, allowing the use of tiny, low cost capacitors and inductors 2mm 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 high efficiency at light loads, while pulse-skipping mode provides low 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.


	Iout	Fsw	Features
LTC3407	2x 600mA	1.5MHz	-
LTC3407-2	2x 800mA	2.25MHz	-
LTC3407-3	2x 800mA	2.25MHz	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
Portable Media Players
PC Cards
Wireless and DSL Modems

Part Models: 4
1ku List Price: Starting From $3.45

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
LTC3407EDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3407EDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3407EMSE#PBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3407EMSE#TRPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0130_Form Material_Report
LTC3407EMSE#PBF	PRODUCTION
LTC3407EMSE#TRPBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
LTC3407A	PRODUCTION	Dual Synchronous 600mA, 1.5MHz Step-Down DC/DC Regulator

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTC3407
LTC3407-2
LTC3407-3
LTC3407-4
LTC3407A
LTC3407A-2

LTpowerCAD 1

LTC3407 Project - Dual 600mA, 1.5MHz Monolithic, Synchronous Step-Down Regulator (2.7-5.5V to 2.5V @ 600mA)

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.

LTpowerCAD^® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

LTC3407EDD Demo Board | (DFN) VIN = 2.5V to 5.5V, VOUT1 = 1.2V / 1.5V/1.8V @ 600mA, VOUT2 = 2.5V @ 600mA

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Product Details

Demonstration circuit 701 is a Dual Synchronous, 600mA, 1.5MHz Step-Down DC/DC Regulator featuring the LTC3407 in the 3x3 DFN-10 package. The DC701 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 LTC3407 requires only 40uA of quiescent current; in Pulse Skip mode, the LTC3407 provides lower output ripple voltage at light load currents. The DC701 can provide up to 96% efficiency on either channel and consumes less than 1uA in shutdown.

Resources

DC701A - Demo Manual
143.00K

DC701A - Schematic
20.00K

DC701A - Design File
606.00K

LTC3407EMSE Demo Board | (MSOP) VIN = 2.5V to 5.5V, VOUT1 = 1.2V/1.5V/1.8V @ 600mA, VOUT2 = 2.5V @ 600mA

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Product Details

Demonstration circuit 568 is a Dual Synchronous, 600mA, 1.5MHz Step-Down DC/DC Regulator featuring the LTC3407 in the MSOP-10 exposed pad package. The DC568 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 LTC3407 requires only 40uA of quiescent current; in Pulse Skip mode, the LTC3407 provides lower output ripple voltage at light load currents. The DC568 can provide up to 96% efficiency on either channel and consumes less than 1uA in shutdown.

Resources

DC568A - Demo Manual
442.00K

DC568A - Design File
0.00M

DC568A - Schematic
51.00K

Latest Discussions

5 Years Ago

Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Design Note 2

Technical Articles 2

Hardware Ecosystem

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTpowerCAD 1

Evaluation Kits

Product Details

Resources

Product Details

Resources

Latest Discussions

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