LT8349 Datasheet | Analog Devices

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 VIN Pin Quiescent Current: - 0.5µA in Shutdown - 15µA in Burst Mode Operation - Integrated 8V/6A Synchronous Power Switches - Adjustable and Synchronizable: 300k Hz to 4MHz - Burst Mode or Forced Continuous Operation at Light Load - Accurate 1V Enable Pin Threshold - Small 1.9mm x 2.6mm WLCSP Package GENERAL DESCRIPTION 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 300k Hz and 4MHz and synchronizable to an external clock. The LT8349 features output soft-start and output overvoltage lockout. APPLICATIONS - Handheld and Industrial Power Supplies All registered trademarks and trademarks are the property of their respective owners. EFFICIENCY (%) POWER LOSS (m W) TYPICAL APPLICATION VIN 2.5V TO 4.5V L2 0.47µH L1 0.47µH 0.1µF 0.1µF SW1 BST1 SW2 BST2 LT8349 VOUT 22µF ×2 EN/UVLO SYNC/MODE...