LTC3560

PRODUCTION

LTC3560

2.25MHz, 800mA Synchronous Step-Down Regulator in ThinSOT

PRODUCTION

High Efﬁciency Step-Down Converter slide

Figure 1b. Efﬁciency vs Load Current slide

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1ku List Price Starting From $2.30

Features

High Efficiency: Up to 95%
Low Output Ripple (<20mV_P-P): Burst Mode^® Operation: I_Q = 16µA
2.5V to 5.5V Input Voltage Range
2.25MHz Constant Frequency Operation
Synchronizable to External Clock
No Schottky Diode Required
Stable with Ceramic Capacitors
Low Dropout Operation: 100% Duty Cycle
0.6V Reference Allows Low Output Voltages
Shutdown Mode Draws < 1µA Supply Current
±2% Output Voltage Accuracy
Current Mode Operation for Excellent Line and Load Transient Response
Overtemperature Protected
Low Profile (1mm) ThinSOT^™ Package

Additional Details

The LTC3560 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 16µA, dropping to <1µA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3560 ideally suited for single Li-Ion/Li-Polymer battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.

Switching frequency is internally set at 2.25MHz, allowing the use of small surface mount inductors and capacitors. For noise sensitive applications the LTC3560 can be externally synchronized from 1MHz to 3MHz. Burst Mode operation is inhibited during synchronization or when the SYNC/MODE pin is pulled high, preventing low frequency ripple from interfering with audio circuitry.

The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage. The LTC3560 is available in a low profile (1mm) ThinSOT package.

Applications

Cellular Telephones
Wireless and DSL Modems
Digital Still Cameras
Media Players
Portable Instruments

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Support

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

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FAQs

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Part Models 4

1ku List Price Starting From $2.30

Technical Documents 3

LTC3560: 2.25MHz, 800mA Synchronous Step-Down Regulator in ThinSOT Data Sheet 05/12/2009

R415 Reliability Data 03/23/2018

DC1025A - Demo Manual 09/24/2009

Design Resources 4

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
LTC3560ES6#TRMPBF	6-Lead TSOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3560ES6#TRPBF	6-Lead TSOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3560IS6#TRMPBF	6-Lead TSOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3560IS6#TRPBF	6-Lead TSOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC3560ES6#TRMPBF
Pin/Package Drawing
6-Lead TSOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTC3560ES6#TRPBF
Pin/Package Drawing
6-Lead TSOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTC3560IS6#TRMPBF
Pin/Package Drawing
6-Lead TSOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTC3560IS6#TRPBF
Pin/Package Drawing
6-Lead TSOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

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

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DC1025A

LTC3560ES6 Demo Board | 2.5V ≤ VIN ≤ 5.5V, VOUT = 1.2V/1.5V/1.8V @ 800mA

DC1025A

LTC3560ES6 Demo Board | 2.5V ≤ VIN ≤ 5.5V, VOUT = 1.2V/1.5V/1.8V @ 800mA

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Product Detail

Demonstration circuit 1025 is a step-down converter, using the LTC3560 monolithic synchronous buck regulator. The DC1025 has an input voltage range of 2.5V to 5.5V, and is capable of delivering up to 800 mA of output current. The output voltage of the DC1025 can be set as low as 0.6V, the reference voltage of the LTC3560. At low load currents, the DC1025 can operate in either noise sensitive applications, due to the capability of the LTC3560 to operate in pulse-skipping mode, or in high efficiency applications, because the LTC3560 can also operate in Burst-Mode.

Resources

ZIP

DC1025A - Design File

665.00K

PDF

DC1025A - Demo Manual

634.00K

PDF

DC1025A - Schematic

28.00K

DC1025A

LTC3560ES6 Demo Board | 2.5V ≤ VIN ≤ 5.5V, VOUT = 1.2V/1.5V/1.8V @ 800mA

LTspice 2

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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.