FTM Board Club
1A 1.5MHz Synchronous Step-Down Regulator Evaluation Board

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 operations.

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 providing 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 as low as 0.6V with a better than 3% accuracy while a low quiescent current supports the most stringent battery operations conditions. Built-in over temperature and under voltage lock-out protections insure safe operations under abnormal operating conditions.


• 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

• As Low as 0.6V Adjustable Output Voltage

• Internal Compensation Network

• 15ľA Quiescent Current

• Over Temperature & UVLO Protections

• RoHS Compliant “Green”/Halogen Free 5-Pin SOT23 Package