LT3467

PRODUCTION

1.1A Step-Up DC/DC Converter with Integrated Soft-Start

Data Sheet (Rev. H) Product Selection Table

Part Models: 8
1ku List Price: Starting From $2.37

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Overview

1.3MHz Switching Frequency (LT3467)
2.1MHz Switching Frequency (LT3467A)
Low V_CESAT Switch: 330mV at 1.1A
High Output Voltage: Up to 40V
Wide Input Range: 2.4V to 16V
Dedicated Soft-Start Pin
5V at 540mA from 3.3V Input (LT3467)
5V at 430mA from 3.3V Input (LT3467A)
12V at 270mA from 5V Input (LT3467)

12V at 260mA from 5V Input (LT3467A)
Uses Small Surface Mount Components
Low Shutdown Current: <1μA
Pin-for-Pin Compatible with the LT1930 and LT1613
Low Profile (1mm) ThinSOT^™ Package
Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN Package
AEC-Q100 Qualified for Automotive Applications

The LT3467/LT3467A switching regulators combine a 42V, 1.1A switch with a soft-start function. Pin compatible with the LT1930, its low V_CESAT bipolar switch enables the device to deliver high current outputs in a small footprint. The LT3467 switches at 1.3MHz, allowing the use of tiny, low cost and low height inductors and capacitors. The LT3467A switches at 2.1MHz, allowing the use of even smaller components. High inrush current at start-up is eliminated using the programmable soft-start function. A single external capacitor sets the current ramp rate. A constant frequency current mode PWM architecture results in low, predictable output noise that is easy to filter.

The high voltage switch on the LT3467/LT3467A is rated at 42V, making the devices ideal for boost converters up to 40V as well as SEPIC and flyback designs. The LT3467 can generate 5V at up to 540mA from a 3.3V supply or 5V at 450mA from four alkaline cells in a SEPIC design. The LT3467A can generate 5V at up to 430mA from a 3.3V supply or 15V at 135mA from a 3.3V supply. The LT3467/LT3467A are available in a low profile (1mm) 6-lead SOT-23 package and tiny 3mm × 2mm DFN package.


	Switching Frequency
LT3467	1.3MHz
LT3467A	2.1MHz

APPLICATIONS

Digital Cameras
White LED Power Supplies
Cellular Phones
Medical Diagnostic Equipment
Local 5V or 12V Supplies
TFT-LCD Bias Supplies
xDSL Power Supplies

Part Models: 8
1ku List Price: Starting From $2.37

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
LT3467EDDB#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3467EDDB#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3467ES6#TRMPBF	6-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3467ES6#TRPBF	6-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3467IDDB#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3467IDDB#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3467IS6#TRMPBF	6-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3467IS6#TRPBF	6-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Protection Switches & Controllers 1
LTC4417	RECOMMENDED FOR NEW DESIGNS	Prioritized PowerPath^™ Controller

Tools & Simulations

LTspice 1

LT3467 Demo Circuit - 1.1A, Step-up Converter (5V to 12V @ 260mA)

Models for the following parts are available in LTspice:

LT3467
LT3467A

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

LT3467ES6 | 1.2MHz, SOT-23 DC/DC Converter, 2 Circuits; Boost and SEPIC

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Product Details

Demonstration circuit 647 is a 1.2MHz, SOT-23 DC/DC Converter featuring the LT3467. The demo board demonstrates two separate DC/DC converters for different application needs. The Boost Circuit is designed to convert a 5V input to 12V output at 300mA maximum load. The SEPIC Circuit generates a constant 12V/300mA output with 10V~16V variable input. Both circuits are designed to demonstrate the soft start feature, advantages of the 1.2MHz switching frequency, the internal 42V/1.1A switch, wide input voltage range and small circuit size.