Silicontent Technology SCT2452

Beschreibung

The SCT2452 is 5A synchronous buck converters with wide input voltage, ranging from 3.8V to 36V, which integrates a 45mΩ high-side MOSFET and a 20mΩ low-side MOSFET. The SCT2452, adopting the peak current mode control, supports the Pulse Skipping Modulation (PSM) with typical 25uA low quiescent current which assists the converter on achieving high efficiency at light load or standby condition.The SCT2452 features programmable switching frequency from 100KHz to 2.2MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The converter supports external clock synchronization with a frequency band from 100KHz to 2.2MHz. The SCT2452 allows power conversion from high input voltage to low output voltage with a minimum 100ns on time of high-side MOSFET.The SCT2452 is an Electromagnetic Interference (EMI) friendly buck converter with implementing optimized design for EMI reduction. The SCT2452 features Frequency Spread Spectrum FSS with ±6% jittering span of the 500kHz switching frequency and modulation rate 1/512 of switching frequency to reduce the conducted EMI.

Eigenschaften

• Wide Input Range: 3.8V-36V
• Up to 5A Continuous Output Current
• 0.8V ±1% Feedback Reference Voltage
• Integrated 45mΩ High-Side and 20mΩ Low-Side Power MOSFETs
• Pulse Skipping Mode (PSM) with 25uA Quiescent Current in Sleep Mode
• 100ns Minimum On-time
• Adjustable Soft-start Time
• Adjustable Frequency 100KHz to 2.2MHz
• External Clock Synchronization
• Frequency Spread Spectrum (FSS) Modulation for EMI Reduction
• Precision Enable Threshold for Programmable Input Voltage Under Voltage Lock Out Protection (UVLO) Threshold and Hysteresis
• Low Dropout Mode Operation
• Derivable Inverting Voltage Regulator
• Over-voltage and Over-Temperature Protection
• Available in an ESOP-8 Package

Typische Anwendungen

• Drone, Aero Modeling, GPS Tracker etc.
• Battery Pack Powered System
• Cordless Home Appliance, LCD Display
• Cigarette Lighter Adapters, Chargers
• Automotive System
• Optical Communication and Networking System
• Cordless Power, SB Type-C Power Delivery, USB Charging, Industrial and Medical Distributed Power Supplies

Weiterführende Informationen

• Datenblatt