LT1931

PRODUCTION

1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT

Data Sheet Product Selection Table

Part Models: 8
1ku List Price: Starting From $2.56

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Part Details

Fixed Frequency 1.2MHz/2.2MHz Operation
Very Low Noise: 1mV_P-P Output Ripple
–5V at 350mA from 5V Input
–12V at 150mA from 5V Input
Uses Small Surface Mount Components
Wide Input Range: 2.6V to 16V
Low Shutdown Current: <1µA
Low V_CESAT Switch: 400mV at 1A
Pin-for-Pin Compatible with the LT1611
Low Profile (1mm) ThinSOT^™ Package

Part Models: 8
1ku List Price: Starting From $2.56

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
LT1931AES5#TRMPBF	5-Lead TSOT-23	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1931AES5#TRPBF	5-Lead TSOT-23	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1931AIS5#TRMPBF	5-Lead TSOT-23	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1931AIS5#TRPBF	5-Lead TSOT-23	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1931ES5#TRMPBF	5-Lead TSOT-23	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1931ES5#TRPBF	5-Lead TSOT-23	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1931IS5#TRMPBF	5-Lead TSOT-23	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1931IS5#TRPBF	5-Lead TSOT-23	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LTC4365	RECOMMENDED FOR NEW DESIGNS	Overvoltage, Undervoltage and Reverse Supply Protection Controller

Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

LT1931
LT1931A

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

LTC1930ES5/LTC1931ES5 Demo Board | 3 Circuits: Boost/SEPIC/Inverter, 5VIN to 12VOUT1 @300mA, 10V-16VIN to 12VOUT2 @300mA, 12VIN to -12VOUT3 @350mA

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Product Details

Demonstration Circuit 383B is multipurpose demonstration board featuring the LT1930 and LT1931. The demo board offers three separate DC/DC converters. The Boost circuit is designed to convert a 5V input to 12V output at 300mA maximum load. The SEPIC circuit generates a 12V/300mA output from a 10V~16V variable input. The Inverter circuit is designed for applications requiring -12V/350mA from a positive 12V input.

Resources

DC383B - Demo Manual
736.00K

DC383B - Schematic
45.00K

DC383B - Design Files
878.00K

LT1930AES5/LT1931AES5 Demo Board | 3 Circuits: Boost/SEPIC/Inverter: 5VIN to 12VOUT1 @ 250mA, 10V-16VIN to 12VOUT2 @ 250mA, 12VIN to -12VOUT3 @ 250mA

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Product Details

Demonstration circuit 397 is a multipurpose DC/DC switching regulator using the LT1930A and LT1931A voltage regulators in a SOT-23 package. The demo board offers three separate DC/DC converters for different applications needs. The boost circuit is designed to convert a 5V input to 12V output at 250mA maximum load. The SEPIC circuit generates a constant 12V/250mA (max load) output with a 10V~16V variable input. The inverter circuit is de-signed for applications requiring negative 12V/250mA (max load) from a positive 12V input. All three circuits are designed to demonstrate fast switching frequency (2.2MHz), an internal 36V/1A switch, wide input range, and small circuit size.

Resources

DC397A - Design File
1.00M

DC397A - Schematic
26.00K

DC397A - Demo Manual
484.00K

Reference Designs

View Detailed Reference Design

Features and Benefits

Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
Our reference designs are supported by an intuitive design tool set and IP
Our team can provide designs for quick prototypes that can speed time to market in the most complex applications

Part Used

View Detailed Reference Design

Features and Benefits

Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
Our reference designs are supported by an intuitive design tool set and IP
Our team can provide designs for quick prototypes that can speed time to market in the most complex applications

Part Used

View Detailed Reference Design

Features and Benefits

Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
Our reference designs are supported by an intuitive design tool set and IP
Our team can provide designs for quick prototypes that can speed time to market in the most complex applications