Analog Devices LT8642S | Demoboard DC2560A

Beschreibung

Demonstration circuit 2560A is a 18V, 10A synchronous step-down Silent Switcher®2 with spread spectrum frequency modulation featuring the LT®8642S. The demo board is designed for 1.2V output from a 2.8V to 18Vinput. The LT8642S is a compact, ultralow emission, high efficiency, and high speed synchronous monolithic step-down switching regulator. The integrated bypass capacitors optimize all the fast current loops and make it easier to minimize EMI/EMC emissions by reducing layout sensitivity. Selectable spread spectrum mode can further improve EMI/EMC performance. Fast minimum on-time of 20ns enables high VIN to low VOUT conversion at highfrequency.

Eigenschaften

• Silent Switcher®2 Architecture
• Ultralow EMI Emissions On Any PCB
• Eliminates PCB Layout Sensitivity
• Internal Bypass Capacitors Reduce Radiated EMI
• Optional Spread Spectrum Modulation
• High Efficiency at High Frequency
• Up to 96% Efficiency at 1MHz, 12VIN to 3.3VOUT
• Up to 95% Efficiency at 2MHz, 12VIN to 3.3VOUT
• Wide Input Voltage Range: 2.8V to 18V
• 10A Output Current
• External Compensation: Fast Transient Response and Current Sharing
• Low Quiescent Current Burst Mode® Operation
• 240µA IQ Regulating 12VIN to 1.2VOUT
• Output Ripple < 10mVP-P
• Fast Minimum Switch On-Time: 25ns
• Low Dropout Under All Conditions: 50mV at 1A
• Forced Continuous Mode
• Adjustable and Synchronizable: 200kHz to 3MHz
• Output Soft-Start and Power Good
• Small 24-Lead 4mm × 4mm LQFN Package

Typische Anwendungen

• Server Power Applications
• General Purpose Step-Down

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers