XRP7665 Datasheet | Exar

DESCRIPTION The XRP7665 is a synchronous current-mode PWM step down (buck) regulator capable of a constant output current up to 3 Amps. A wide 4.50V to 18V input voltage range allows for single supply operations from industry standard 5V and 12V power rails. With a 340k Hz constant operating frequency and integrated high and low side 100mΩ/90mΩ MOSFETs, the XRP7665 reduces the overall ponent count and solution footprint. Current-mode control provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 0.1µA. Built-in output over voltage (open load), over temperature, cycle-by-cycle over current and under voltage lockout (UVLO) protections insure safe operations under abnormal operating conditions. The XRP7665 is a pin and function patible device to MP1484 and a 3A pin to pin upgrade to XRP7664. The XRP7665 is offered in a Ro HS pliant, “green”/halogen free 8-pin exposed pad SOIC package. Rev. 2.0.1 APPLICATIONS - Distributed Power Architectures - Point of Load Converters - Audio-Video Equipments - Medical & Industrial Equipments FEATURES - Pin/Function patible to MP1484 - 3A Continuous Output Current - 4.50V to 18V Wide Input Voltage - PWM Current Mode Control - 340k Hz Constant Operations - Up to 93% Efficiency - Adjustable Output Voltage - 0.925V to 16V Range - 2.0% Accuracy - Programmable Soft-Start and Enable Function - Built-in Thermal, Over Current, UVLO and Output Over Voltage Protections - Ro HS pliant “Green”/Halogen Free 8-Pin Exposed Pad SOIC Package TYPICAL APPLICATION DIAGRAM Fig. 1: XRP7665 Application Diagram Exar Corporation 48720 Kato Road, Fremont CA 94538, USA .exar. Tel. +1 510 668-7000 - Fax. +1 510 668-7001 3A 18V Synchronous Step-Down Converter ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of...