Analog Devices LT8349

Beschreibung

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.

Eigenschaften

Input Voltage Range: 2.5V to 5.5VOutput Voltage Programmable Up to 8V2-Phase Operation Reduces Required Input and Output Capacitance and Power Supply Induced NoiseSynchronous Operation for High Efficiency and Reduced Heat DissipationStage SheddingTM and Optional Burst Mode® Operation for High Efficiency at Light LoadLow VIN Pin Quiescent Current:0.5µA in Shutdown15µA in Burst Mode OperationIntegrated 8V/6A Synchronous Power SwitchesAdjustable and Synchronizable: 300kHz to 4MHzBurst Mode or Forced Continuous Operation at Light LoadAccurate 1V Enable Pin ThresholdSmall 1.9mm x 2.6mm WLCSP Package

Typische Anwendungen

• Handheld and Industrial Power Supplies
• Handheld and Industrial Power Supplies

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers