LT8349
RECOMMENDED FOR NEW DESIGNS8V, 12A, 2-Phase Low IQ Synchronous Boost Converter
- Part Models
- 2
- 1ku List Price
- Starting From $2.02
Overview
- Input Voltage Range: 2.5V to 5.5V
- Output Voltage Programmable Up to 8V
- 2-Phase Operation Reduces Required Input and Output Capacitance and Power Supply Induced Noise
- Synchronous Operation for High Efficiency and Reduced Heat Dissipation
- Stage SheddingTM and Optional Burst Mode® Operation for High Efficiency at Light Load
- Low VIN Pin Quiescent Current:
- 0.5µA in Shutdown
- 15µA in Burst Mode Operation
- Integrated 8V/6A Synchronous Power Switches
- Adjustable and Synchronizable: 300kHz to 4MHz
- Burst Mode or Forced Continuous Operation at Light Load
- Accurate 1V Enable Pin Threshold
- Small 1.9mm x 2.6mm WLCSP Package
The LT8349 is a 2-phase single output synchronous boost converter that drives two internal N-Channel power MOSFET stages out-of-phase. Multiphase operation reduces input and output capacitor requirements and allows the use of smaller inductors than the single-phase equivalent. Synchronous rectification increases efficiency, reduces power losses, and eases thermal requirements, enabling high power boost applications.
The LT8349 features Stage Shedding and selectable Burst Mode operation at light load conditions allowing high efficiency over a wide range of load. It features optional spread spectrum frequency modulation (SSFM) to minimize EMI emissions.
The LT8349 integrates 8V/6A power switches, operating at a fixed switching frequency programmable between 300kHz and 4MHz and synchronizable to an external clock. The LT8349 features output soft-start and output overvoltage lockout.
APPLICATIONS
-
Handheld and Industrial Power Supplies
Documentation
Data Sheet 1
User Guide 1
Technical Articles 2
Brochure 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 |
|---|---|---|---|
| LT8349AACBZ-R7 | WLCSP | ||
| LT8349ACBZ-R7 | WLCSP |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LT8349
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
Evaluates: LT8349 in 6V Output Voltage Application