www.exar.com xrp7664 the popular choice for 2a power rail down conversions 2a 18v synchronous step-down converter the xrp7664 is a synchronous current mode pwm step down (buck) regulator capable of a constant output current up to 2amps. a wide 4.75v to 18v input voltage range allows for single supply operations from industry standard 5v and 12v power rails. with a 340khz constant operating frequency and integrated high and low side 120m ? /110m ? mosfets, the xrp7664 reduces the overall component 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 0.1ua. 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 xrp7664 is offered in a rohs compliant, green/halogen free 8-pin soic package. major features ? pin/function compatible to mp1482 ? 2a continuous output current ? 4.75v to 18v wide input voltage ? pwm current mode control ? 340khz constant operations ? up to 93% efficiency ? adjustable output voltage ? 0.925v to 16v range ? 3% accuracy ? programmable soft-start and enable function ? built-in thermal, over current, uvlo and output over voltage protections ? rohs compliant, green/ halogen free 8-pin soic package
www.exar.com e x a r c o r p o r at i o n 48720 kato road fremont, ca 94538 u.s.a. t. +1.510.668.7000 f. +1.510.668.7001 ? 2 010 e x a r c o r p o r at i o n f ly1110 _ x r p 7 6 6 4 xrp7664 the popular choice for 2a power rail down conversions 2a 18v synchronous step-down converter typical applications ? distributed power architectures ? point of load converters ? audio-video equipments ? medical & industrial equipments application diagram ordering information p art number package operating temperature range comments XRP7664IDTR-F soic-8 -40ct a +85c 2.5k/ tape & reel xrp7664evb xrp7664 evaluation board
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