XRP6658

XRP6658 1A 1.5MHz PFM/PWM Synchronous Step-Down Converter January 2014 GENERAL DESCRIPTION The XRP6658 is a synchronous current mode PWM step down (buck) converter capable of delivering up to 1 Amp of current and optimized for portable battery-operated applications. Based on a current mode 1.5MHz constant frequency PWM control scheme, the XRP6658 reduces the overall component count and solution footprint as well as provides a low output voltage ripple and excellent line and load regulation. It also implements a PFM mode to improve light load efficiency as well as a 100% duty cycle LDO mode. Output voltage is adjustable to as low as 0.6V with a better than 3% accuracy while a low quiescent current supports the most stringent battery operating conditions. Built-in over temperature and under voltage lock-out protections insure safe operations under abnormal operating conditions. The XRP6658 is offered in a RoHS compliant, “green”/halogen free 5-pin SOT23 package. Rev. 1.6.0 APPLICATIONS Portable Equipments Battery Operated Equipments Audio-Video Equipments Networking & Telecom Equipments FEATURES Guaranteed 1A Output Current − Input Voltage: 2.5V to 5.5V 1.5MHz PWM Current Mode Control − PFM Mode Operations at Light Load − 100% Duty Cycle LDO Mode Operations − Achieves 97% Efficiency Adjustable Output Voltage Range − As Low as 0.6V with ±3% Accuracy Internal Compensation Network 15µA Quiescent Current Over Temperature & UVLO Protections RoHS Compliant “G...