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LT3462

PRODUCTION

Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky

Data Sheet (Rev. A) Product Selection Table

Part Models: 6
1ku List Price: Starting From $2.75

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Overview

Integrated Schottky Rectifier
Fixed Frequency 1.2MHz/2.7MHz Operation
Very Low Noise: 1mV_P-P Output Ripple
Low V_CESAT Switch: 270mV at 250mA
−5V at 100mA from 5V Input
−12V at 30mA from 3.3V Input
Low Input Bias Current GND Based FB Input
Low Impedance (40Ω) 1.265V Reference Output
High Output Voltage: Up to −38V
Wide Input Range: 2.5V to 16V
Uses Tiny Surface Mount Components
Low Shutdown Current: <10µA
Low Profile (1mm) SOT-23 (ThinSOT^™) Package
8‑Lead DFN (2mm × 2mm × 0.75mm) Package, LT3462A Only

The LT3462/LT3462A are general purpose fixed frequency current mode inverting DC/DC converters. Both devices feature an integrated Schottky and a low V_CESAT switch allowing a small converter footprint and lower parts cost. The LT3462 switches at 1.2MHz while the LT3462A switches at 2.7MHz. These high speeds enable the use of tiny, low cost and low height capacitors and inductors.

The LT3462/LT3462A operate in a dual inductor inverting topology that filters both the input and output currents.Very low output voltage ripple approaching 1mV_P-P can be achieved when ceramic capacitors are used. Fixed frequency switching ensures a clean output free from low frequency noise typically present with charge pump solutions.The 40V switch allows a V_IN to V_OUT differential ofup to 38V for dual inductor topologies.

Both devices provide a low impedance 1.265V reference output to supply the feedback resistor network. A ground referenced, high impedance FB input allows high feedback resistor values without compromising output accuracy.

Applications

CCD Bias
LCD Bias
GaAs FET Bias
General Purpose Negative Voltage Supply

Part Models: 6
1ku List Price: Starting From $2.75

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
LT3462AEDC#TRMPBF	8-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3462AEDC#TRPBF	8-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3462AES6#TRMPBF	6-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3462AES6#TRPBF	6-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3462ES6#TRMPBF	6-Lead TSOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3462ES6#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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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LT3462
LT3462A

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.