Precision Adjustable Current-Limited Power Distribution Switch

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Product Description

MP62550/MP62551 Power Distribution Switch is designed for precision current limiting and provides up to 1.5A continuous output current. It offers programmable current limit between 60mA and 1.7A (typ) with ±10% accuracy by an external resistor. The switch includes an 88mΩ N-channel Power MOSFET and operates from 2.5V to 5.5V input voltage. The device has built-in protection for both over current and increased thermal stress. For over current, the device will limit the current by changing to a constant current mode. It will shutdown when its internal temperature reaches unsafe levels and recover once the device temperature reduces approx 10C.  It provides built-in soft-start which controls the rise and fall times of the output voltage to limit the initial inrush current and voltage surges.  The reverse-voltage protection feature turns off the MOSFET to protect the device.  The FLAG(________) output will report a fail mode (low level) when over current or over temperature is encountered. The FLAG(________) will not change state when the input UVLO is triggered.  The MP62550/MP62551 is available in space saving 6-pin TQFN 2x2mm package and TSOT23-6 package.

Product Features

  • Up to 1.5A Continuous Output Current
  • ±10% Current-Limit Accuracy
  • Adjustable Current-Limit, 60mA -1700mA (typ)
  • Fast Over-current Response 2μs (typ)
  • 2.5V to 5.5V Supply Range
  • 88mΩ MOSFET (TQFN Package)
  • 1.5μA Maximum Standby Supply Current
  • Reverse Input-Output Voltage Protection
  • Built-in Soft-Start
  • Thermal-Shutdown Protection
  • Automatic-on after Fault Removed
  • Under-Voltage Lockout
  • Deglitched Fault Report
  • FLAG(________) won't Change State at Input UVLO Transition
  • Bidirectional Fault Deglitch Time
  • Active Low & Active High Options


  • Output DischargeNo
  • EnableActive High
  • Fault FlagOver Current,Active Low,Over Temperature
  • Ilimit (A)Prog.
  • Rds(on) (mΩ)88
  • GradeCatalog
  • Channels1
  • Iq (typ) (µA)125
  • Iout (max) (A)1.5
  • Vin (max) (V)5.5
  • Vin (min) (V)2.5
  • PackageTQFN-6 (2x2), TSOT23-6
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.