The RP509x is a low supply current PWM/VFM step-down DC/DC converter with synchronous rectifier featuring 0.5 A/1 A output current. Internally, a single converter consists of a reference voltage unit, an error amplifier, a switching control circuit, a mode control circuit, a soft-start circuit, an undervoltage lockout (UVLO) circuit, a thermal shutdown circuit, and switching transistors. The RP509x employs synchronous rectification to improve rectification efficiency by replacing diodes with built-in switching transistors. Using synchronous rectification not only increases circuit performance but also allows an engineer to reduce the part count in their design.
Output voltage control is selectable between PWM/VFM auto-switching and forced PWM control. The second further reduces noise compared to normal PWM control under a light load. The output voltage type is selectable between an internally fixed and an externally adjustable output voltage . The RP509x contains both current limit and thermal shutdown protection circuits where the LX current limit value (Typ.) is selectable between 1.6 A and 1.0 A. The RP509Z is available in both WLCSP-6-P6 and SOT-23-6.
Orders to European countries are delivered by a tracked courier at a rate of €19.50 (5-7 working days).
Deliveries to the EU will be dispatched from the UK via our distribution hub in the Netherlands. You will receive tracking information direct from our courier company when the goods leave the distribution hub.
Using this method means there is no need for you to clear your goods through customs, and VAT will be charged on your invoice in accordance with EU VAT regulations – If you are VAT registered, VAT is 0% using the Reverse Charge rules. If you are not a VAT registered business, VAT is charged at your country’s standard rate.