NCV898031 - ON Semiconductor

NCV898031 SEPIC/Boost Controller

Pin No. Pin Symbol Function 1 EN Enable input. The part is disabled into sleep mode when this pin is brought low for longer than the enable time−out period. 2 ISNS Current sense input. Connect this pin to the source of the external N−MOSFET, through a current−sense resistor to ground to sense the switching current for regulation and current limit.

Features

include internally−set soft−start, undervoltage lockout, cycle−by−cycle current limiting and thermal shutdown. Additional features include low quiescent current sleep mode and microprocessor compatible enable pin. Features
• Peak Current Mode Control with Internal Slope Compensation
• 1.2 V $2% Reference Voltage
• 2 MHz Fixed Frequency Operation
• Wide Input Voltage Range of 3.2 V to 40 V, 45 V Load Dump
• Input Undervoltage Lockout (UVLO)
• Internal Soft−Start
• Low Quiescent Current in Sleep Mode (< 10 mA Typical)
• Cycle−by−Cycle Current Limit Protection
• Hiccup−Mode Overcurrent Protection.