Rochester Electronics PMIC - Voltage Regulators - DC DC Switching Regulators LM43603AQPWPRQ1

The LM43603AQPWPRQ1 is a synchronous step-down DC-DC converter designed for automotive applications, capable of delivering up to 3A of load current from an input voltage range of 3.5V to 36V, with an absolute maximum of 42V. It features a low quiescent current of 27¬µA in regulation and offers high efficiency at light loads through discontinuous conduction mode and pulse frequency modulation. The device is AEC-Q100 qualified, ensuring reliability in automotive environments with an operating junction temperature range of -40¬8C to +125¬8C. Key features include adjustable switching frequency from 200kHz to 2.2MHz, synchronization to an external clock, internal compensation, and stability with various capacitor types. Protection mechanisms include output short circuit protection with hiccup mode, overtemperature thermal shutdown, and precision enable for programmable system undervoltage lockout. The LM43603AQPWPRQ1 is housed in a compact HTSSOP 16-pin package, facilitating efficient PCB layout with minimal external components required. This product is suitable for a variety of applications, including industrial power supplies and telecommunications systems.