LT3154
RECOMMENDED FOR NEW DESIGNS5.5V 6A Low-IQ Monolithic Buck-Boost DC/DC Converter
- Part Models
- 2
- 1ku List Price
- Starting From $4.44
Overview
- Single Inductor Buck-Boost Architecture
- Low Noise Buck-Boost Architecture
- Wide VIN Range 1.8V to 5.5V
- Adjustable VOUT Range 1.8V to 5.5V
- 5A of Continuous Output Current with VIN > VOUT
- Up to 97% Efficiency
- Selectable Internal 2.2MHz Fixed Frequency Adjustable and Synchronizable: Up to 4MHz
- Burst Mode® IQ 17μA for High Efficiency at Light Loads
- Programmable Soft-Start and VIN UVLO
- Simple Solution with Minimal External Components
- Small 3mm × 3mm × 0.74mm LQFN package
The LT3154 is a highly efficient, high current, buck‑boost DC/DC converter that operates from input voltages above, below or equal to the regulated output voltage. The LT3154’s advanced topology provides a continuous transfer through all operating modes. VIN operation from 1.8V to 5.5V provides flexibility for a wide variety of power sources. The output voltage is adjustable between 1.8V to 5.5V.
To minimize external components the LT3154 can be configured to operate from a 2.2MHz internal oscillator. To optimize applications for highest efficiency or smallest footprint the oscillator can be programmed between 500kHz to 4MHz, or synchronized to an external clock for noise sensitive circuits.
Selectable Burst Mode operation reduces quiescent current to 17μA, ensuring high efficiency across the entire load range. The VIN start-up threshold (UVLO) can be adjusted for various input sources. An internal or externally programmable soft-start limits inrush current during start-up. Other features include <1μA shutdown current, short circuit, and thermal overload protection. The LT3154 is housed in the thermally enhanced 16-lead (3mm × 3mm × 0.74mm) LQFN package.
APPLICATIONS
- Portable Inventory Terminals
- Handheld Computers
- Medical and Industrial Instruments
- Wireless RF Transmitter
- Backup Power Applications
- Battery Powered Systems
Documentation
Data Sheet 1
User Guide 1
Video 1
Rarely Asked Question 1
Webcast 1
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 |
|---|---|---|---|
| LT3154AV#PBF | 16-Lead LQFN (3mm x 3mm x 0.74mm) | ||
| LT3154AV#TRPBF | 16-Lead LQFN (3mm x 3mm x 0.74mm) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LT3154
LTpowerCAD
Design tools for the following parts are available in LTpowerCAD:
- LT3154
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
LT3154 | 5.5V 6A Low-Noise Monolithic Buck-Boost DC/DC Converter