LT8349

RECOMMENDED FOR NEW DESIGNS

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

Analog Devices LT8349 Product Info

10 February 2026 4

Features

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 details & applications

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

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