NDP133A1 is a high efficiency, monolithic synchronous step-down DC/DC converter integrated with multiple USB Dedicated Charging Protocol. The step down converter is Capable of delivering up to 3.1A continuous load with excellent line and load regulation over input voltage range of 8.5V to 32V.

The integrated USB Dedicated Charging protocol complies with the most popular fast charging protocol as QC2.0./3.0, FCP, and AFC etc. It also supports Apple iPhone, BC1.2 or YD/T 1591 compliant devices. An auto-detect feature automatically identifies the handheld devices attached to the USB port, and automatically adjusts output voltage.

  The NDP133A1 features full protection include hiccup current limiting, input over voltage protection and thermal regulation.




synchronous step-down converter

l  Wide VIN range : 8.5V to 32V

l  3.1A Continuous Output Current

l  Up to 93% Efficiency

l  CC/CV Mode Control

l  100% Max Duty Cycle

l  Default 5.1V fixed Output Voltage

l  +/-2% Output Voltage Accuracy

l  Internal loop Compensation

l  Integrated 45/21 mΩ High/Low Side RDS(ON)

l  Burst Mode Operation at Light Load

USB Dedicated Charging Protocol

l  Output voltage range: 3.6V~20V, adjust along with fast charge negotiation

l  Support Qualcomm Quick Charge 2.0/3.0

l  Support FCP /AFC

l  Support USB DCP applying 2.7V on D+/ D-

l  Meets BC1.2, YD/T 1591-2009

l  Available in SOP8 Package


l  Wall-Adapter, Smart phones

l  Car Charger

l  Tablets, Netbooks

l  Distributed Power Systems

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