LTC3410B

PRODUCTION

2.25MHz, 300mA Synchronous Step-Down Regulator in SC70

Part Models: 10
1ku List Price: Starting From $1.86

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Part Details

High Efficiency: Up to 96%
300mA Output Current at V_IN = 3V
380mA Minimum Peak Switch Current
2.5V to 5.5V Input Voltage Range
2.25MHz Constant Frequency Operation
No Schottky Diode Required
Low Dropout Operation: 100% Duty Cycle
Stable with Ceramic Capacitors
0.8V Reference Allows Low Output Voltages
Shutdown Mode Draws < 1μA Supply Current
±2% Output Voltage Accuracy
Current Mode Operation for Excellent Line andLoad Transient Response
Overtemperature Protected
Available in Low Profile SC70 Package

The LTC3410B is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in adjustable and fixed output voltage versions. Supply current during operation is only 200µA, dropping to <1µA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3410B ideally suited for single Li-Ion battery-powered applications.100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM pulse skipping mode operation provides very low output ripple voltage for noise sensitive applications.

Switching frequency is internally set at 2.25MHz, allowing the use of small surface mount inductors and capacitors. The LTC3410B is specifically designed to work well with ceramic output capacitors, achieving very low output voltage ripple and a small PCB footprint.

The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.8V feedback reference voltage. The LTC3410B is available in a tiny, low profile SC70 package.


	Vout	Burst Mode
LTC3410	Adj. Down To 0.8V	Yes
LTC3410B	Adj. Down To 0.8V	No
LTC3410-1.875	Fixed 1.875V	Yes

Applications

Cellular Telephones
Personal Information Appliances
Wireless and DSL Modems
Digital Still Cameras
MP3 Players
Portable Instruments

Part Models: 10
1ku List Price: Starting From $1.86

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
LTC3410BESC6#TRMPBF	6-Lead SC70	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3410BESC6#TRPBF	6-Lead SC70	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3410BESC6-1.2#TRMPBF	6-Lead SC70	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3410BESC6-1.2#TRPBF	6-Lead SC70	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3410BESC6-1.5#TRMPBF	6-Lead SC70	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3410BESC6-1.5#TRPBF	6-Lead SC70	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3410BESC6-1.8#TRMPBF	6-Lead SC70	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3410BESC6-1.8#TRPBF	6-Lead SC70	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3410BESC6-1.875#TRMPBF	6-Lead SC70	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3410BESC6-1.875#TRPBF	6-Lead SC70	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report Qualification Results Summary
LTC3410BESC6#TRMPBF	PRODUCTION
LTC3410BESC6#TRPBF	PRODUCTION
LTC3410BESC6-1.2#TRMPBF	PRODUCTION
LTC3410BESC6-1.2#TRPBF	PRODUCTION
LTC3410BESC6-1.5#TRMPBF	PRODUCTION
LTC3410BESC6-1.5#TRPBF	PRODUCTION
LTC3410BESC6-1.8#TRMPBF	PRODUCTION
LTC3410BESC6-1.8#TRPBF	PRODUCTION
LTC3410BESC6-1.875#TRMPBF	PRODUCTION
LTC3410BESC6-1.875#TRPBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
Digital Power System Managers 1
LTC2974	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Multiple Output Buck Regulators 1
LTC3880	RECOMMENDED FOR NEW DESIGNS	Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
Single-Supply Monitors 1
LTC2935	PRODUCTION	Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTC3410
LTC3410-1.2
LTC3410-1.65
LTC3410-1.875
LTC3410B
LTC3410B-1.2
LTC3410B-1.875

LTpowerCAD 1

LTC3410B Project - Ref. Design 2.25 MHz

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

LTC3410BESC6 Demo Board | 2.5V ≤ VIN ≤ 5.5V, VOUT = 1.8V @ 300mA

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Product Details

Demonstration circuit 870A-B is a high efficiency, 2.25MHz buck converter, incorporating the LTC3410B monolithic synchronous regulator (with Burst Mode disabled). The DC870 has an input voltage range of 2.25V to 5.5V, and is capable of delivering up to 300mA of output current. The LTC3410B has an output voltage range from 0.8V to 5V, but the demo board is configured for a 1.8V output.

Resources

DC870A-B - Design Files
379.00K

DC870A-B - Demo Manual
141.00K

DC870A - Schematic
20.00K

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