LT8349

RECOMMENDED FOR NEW DESIGNS

8V, 12A, 2-Phase Low IQ Synchronous Boost Converter

Data Sheet (Rev. B) Product Selection Table

Part Models: 1
1ku List Price: Starting From $1.59

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Part Details

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 Shedding^TM and Optional Burst Mode^® Operation for High Efficiency at Light Load

Low V_IN 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

Part Models: 1
1ku List Price: Starting From $1.59

Documentation

Data Sheet 1

LT8349: 8V, 12A, 2-Phase Low IQ Synchronous Boost Converter Data Sheet (Rev.B) 12/11/2024

User Guide 1

EVAL-LT8349-BZ User Guide: Evaluates: LT8349 in 6V Output Voltage Application (Rev.0) 12/11/2024

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
LT8349ACBZ-R7	CHIPS W/SOLDER BUMPS/WLCSP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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

Evaluation Kits

Evaluates: LT8349 in 6V Output Voltage Application

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Features and Benefits

Input Voltage Range: 2.5V to 4.5V
6V Output Voltage
Up to 5A Load Current at 4.5V input voltage
2MHz (per phase) Switching Frequency
High 97.1% Efficiency (V_IN = 4.5V, I_OUT = 1A)
Enable/UVLO Input, Resistor-Programmable UVLO Threshold
Selectable Mode of operation
Selectable Burst Mode Peak Current (IPK_BURST) levels for optimization of performance

External Frequency Synchronization
External Compensation
Overtemperature Protection
Proven Printed Circuit Board (PCB) Layout
Fully Assembled and Tested
Complies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions

Product Details

The EVAL-LT8349-BZ evaluation board provides a proven design to evaluate the LT8349, 2-Phase low IQ, synchronous boost converter. The application circuit is configured to demonstrate optimum performance and component size. Using the board layout example, optimized for conducted, radiated EMI, and thermal performance, will help ensure the designer sees similar performance in their system.

The evaluation board is configured to run at 2MHz per phase with a 6V output voltage from an input voltage range of 2.5V to 4.5V and deliver up to 5A load current when V_IN is 4.5V.

The evaluation board features an adjustable input undervoltage-lockout, external clock synchronization, thermal shutdown, selectable mode of operation and selectable Burst Mode peak current.

The LT8349 converter data sheet provides a complete description of the part that should be read in conjunction with this user guide before operating the evaluation board.

Resources

EVAL-LT8349-BZ User Guide: Evaluates: LT8349 in 6V Output Voltage Application (Rev.0)
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