• Wide Input Range: 3.8V-36V (38V ABS MAX)
• Up to 5A Continuous Output Current
• 0.8V ±1% Feedback Reference Voltage
• Integrated 45mΩ High-Side 20mΩ Low-Side Power MOSFETs
• Pulse Skipping Mode at Light load
• 25uA Quiescent Current in Sleep Mode
• 100ns Minimum On-time
• Adjustable Soft-start Time
• Switching Frequency 570KHz
• EMI Reduction with Frequency Spread Spectrum (FSS) Modulation
• Precision Enable Threshold for Programmable UVLO Threshold Hysteresis
• Low Dropout Mode Operation
• Derivable Inverting Voltage Regulator
• Over-voltage Protection
• Over Temperature Protection 170oC
• Available in an ESOP-8Package
The SCT2451 is a fully integrated synonous step-down converter supporting up to 5A continuous output current. The wide input voltage, ranging from 3.8V to 36V with transient tolerance up to 38V, eases input surge protection design. The device offers adjustable soft-start time, which provides flexibility to prevent in-rush current achieves voltage tracking according to application requirements. With fixed 570KHz switching greqeuncy, the SCT2451 adopts peak current mode control seamless transitions between Pulse Width Modulation (PWM) Pulse Skipping Mode (PSM), which ensures superior transient response. The quiescent current is 25μA in sleep-mode, supporting applications requiring high efficiency at light load. The SCT2451 allows power conversion from high input voltage to low output voltage with a minimum 100ns on-time of high-side MOSFET. It also supports LDO mode with low dropout from input to output. The SCT2451 is a EMI friendly device featuring with Frequency Spread Spectrum (FSS). This is an EMI friendly device featuring with Frequency Spread Spectrum (FSS). The device has built-in protections including cycle-by-cycle current limit, hiccup protection at over current, thermal shutdown protection, output over-voltage protection input voltage under-voltage protection. The SCT2451 is available in an 8-pin thermally enhanced SOP-8 package.
Application
• Battery Pack Powered System - Cordless Power Tools, Cordless Home Appliance, Drone, Aero Modeling, GPS Tracker etc.
• Cigarette Lighter Adapters, Chargers
• LCD Display
• USB Type-C Power Delivery, USB Charging
• Industrial Medical Distributed Power Supplies
• Optical Communication Networking System
• Automotive System
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