SCT2A27STER

The SCT2A27 is an asynchronous buck converter with wide input voltage ranging from 5.5V to 100V which accommodates a variety of step-down applications, making it ideal for automotive, industry, and lighting applications. It integrates an 500mΩ highside MOSFET and has 4A peak output current limit to support high peak current application in GPS tracker with 4G Module. The SCT2A27 also integrate a 200mA LDO which can provide 5V or 3.3V power rail for the system. The SCT2A27, adopting the constant-on time (COT) mode control with integrated loop compensation greatly simplifies the converter off-chip configuration. The SCT2A27 features Pulse Frequency Modulation (PFM) mode at light load with low quiescent current design, which enables the converter to achieve the high-power efficiency during light-load or no-load conditions. The SCT2A27 offers cycle-by-cycle current limit, thermal shutdown protection, output over-voltage protection and input voltage under-voltage protection. The device is available in an 8-pin thermally enhanced SOP-8 package.

Applications

• GPS Tracker
• E-bike, Scooter
• Moto Drives, Drones
• 48V Industry Power Bus System

Key features

• Wide Input Range: 5.5V - 100V
• Maximum Output Voltage: 30V
• 2A Continuous Output Current
• 4A Peak Current Limit
• Integrated 500mΩ High-Side Power MOSFET
• A 200mA LDO Integrated, 5V or 3.3V selectable
• 25uA Quiescent Current with VBIAS Connected to an auxiliary power supply higher than 6V
• 1.2V ±1% Feedback Reference Voltage
• 4ms Internal Soft-start Time
• Fixed Switching Frequency at 300KHz
• COT Control Mode with Integrated Loop Compensation
• Precision Enable Threshold for Programmable Input Voltage Under-Voltage Lock Out Protection (UVLO) Threshold and Hysteresis
• Cycle-by-Cycle Current Limiting
• Over-Voltage Protection
• Over-Temperature Protection
• Available in an ESOP-8 Package