35A Synchronous Step-Down COT Controller


The XRP6141 is a synchronous step-down controller for point-of load supplies up to 35A. A wide 4.5V to 22V input voltage range allows for single supply operation from industry standard 5V, 12V and 19.6V rails.

With a proprietary emulated current mode Constant On-Time (COT) control scheme, the XRP6141 provides extremely fast line and load transient response using ceramic output capacitors. It requires no loop compensation hence simplifying circuit implementation and reducing overall component count. The control loop also provides exceptional line regulation and maintains constant operating frequency. A selectable power saving mode, allows the user to operate in Discontinuous Mode (DCM) at light current loads thereby significantly increasing the converter efficiency.

A host of protection features, including overcurrent, over temperature, short-circuit and UVLO, help achieve safe operation under abnormal operating conditions.

The XRP6141 is available in RoHS compliant, green/halogen free space-saving 16-pin 3 x 3 QFN package.

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  • 35A capable step-down controller
    • Wide input voltage range
      • 5V to 22V single supply
      • 4.5V to 5.5V low VIN
    • Integrated high current 2A/3A drivers
    • 0.6V adjustable output voltage
  • Proprietary constant on-time control
    • No loop compensation required
    • Ceramic output cap. stable operation
    • Programmable 200ns-2µs
    • Constant 200kHz-800kHz Frequency
    • Selectable CCM or CCM/DCM operation
  • Programmable current limit
    • 110ms hiccup mode
  • Precision enable and power good flag
  • Programmable soft-start
  • Integrated bootstrap diode
  • 16-pin QFN packages


  • Networking and communications
  • Fast transient point-of-loads
  • Industrial and medical equipment
  • Embedded high power FPGA
  • Enterprise solutions

Design Tools

Symbols & Footprints
Technical Library


Pkg Code Details Quantities Dimensions PDF
QFN16 3x3 OPT5
  • JEDEC Reference: MO-220
  • MSL Pb-Free:
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  • Dimensions: mm
  • Length: 3.0
  • Width: 3.0
  • Thickness: 0.9
  • Lead Pitch:

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
XRP6141EL-F QFN16 3x3 OPT5 -40 125 Active
XRP6141ELMTR-F QFN16 3x3 OPT5 -40 125 EOL Suggested:
XRP6141ELTR-F QFN16 3x3 OPT5 -40 125 Active
XRP6141EVB Board Active
Show obsolete parts
Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Distribution Date Description File
07/11/2017 Product Discontinuation Notification Product Discontinuation Notice 17-0623-02 r-1033.pdf
02/14/2017 Qualification of alternate assembly subcon, GREATEK, Taiwan. PCN 17-0102-01 Greatek-1033.pdf
03/30/2015 Design, datasheet and alternate assembly site changes. Refer to PCN. PCN_14-1148-01-01-1033.pdf