Analog power module LT8644S series

Silent Switcher®2 Architecture Ultralow EMI Emissions on Any PCB Internal Bypass Capacitors Reduce Radiated EMI Optional Spread Spectrum Modulation High Efficiency at High Frequency Up to 94% Efficiency at 2MHz, 3.3VIN to 1.2VOUT Up to 93% Efficiency at 2MHz, 5VIN to 1.2VOUT PVIN Range: 1.5V to 8V, SVIN Range: 2.7V to 8V VOUT Range: 0.6V to VIN Reference Accuracy: ±0.8% Over Temperature PolyPhase® Operation: Up to 12 Phases Fast Transient Response with External Compensation Forced Continuous Mode Operation Low Quiescent Current Burst Mode® Operation 180μA IQ Regulating 5VIN to 1.2VOUT Output Ripple < 10mVP-P Fast Minimum Switch On-Time: 20ns Adjustable and Synchronizable: 300kHz to 3.5MHz Output Soft-Start and Power Good Small 24-Lead 4mm × 4mm LQFN Package AEC-Q100 Qualification in Progress The LT8644S synchronous step-down regulator features second generation Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes the integration of bypass capacitors to optimize all the fast current loops inside and make it easy to achieve advertised EMI performance by eliminating layout sensitivity. The fast, clean, low-overshoot switching edges enable high efficiency operation even at high switching frequencies, leading to a small overall solution size. Peak current mode control with a 20ns minimum on-time allows high step down ratios even at high switching frequencies. External compensation via the VC pin allows for fast transient response. PolyPhase operation allows multiple LT8644S regulators to run with interleaving phase shift to provide more output current.