Automotive Grade. 4V-40V Input, Current Mode, Synchronous Step-Down Controller

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Product Description

The MPQ2918 is a high-voltage, synchronous, step-down controller that steps down voltages directly from up to 40V. The MPQ2918 uses pulse-width modulation (PWM) current control architecture with accurate cycle-by-cycle current limiting and is capable of driving dual N-channel MOSFETs.
Advanced asynchronous mode (AAM) enables non-synchronous operation to optimize light-load efficiency. 
The operating frequency of the MPQ2918 can be programmed by an external resistor or synchronized to an external clock for noise-sensitive applications. Full protection features include precision output over-voltage protection (OVP), output over-current protection (OCP), and thermal shutdown.
The MPQ2918 is available in TSSOP20-EP and QFN-20 (3mmx4mm) packages.

Product Features

  • Wide 4V to 40V Operating Input Range
  • Dual N-Channel MOSFET Driver
  • 0.8V Voltage Reference with ±1.5% Accuracy Over Temperature
  • Low Dropout Operation: Maximum Duty Cycle at 99.5%
  • Programmable Frequency Range: 100kHz -1000kHz
  • External Sync Clock Range: 100kHz -1000kHz
  • 180° Out-of-Phase SYNCO Pin
  • Programmable Soft Start (SS)
  • Power Good (PG) Output Voltage Monitor
  • Selectable Cycle-by-Cycle Current Limit
  • Output Over-Voltage Protection (OVP)
  • Over-Current Protection (OCP)
  • Internal LDO with External Power Supply Option
  • Programmable Forced CCM and AAM
  • Available in TSSOP20-EP and QFN-20 (3mmx4mm) Packages
  • AEC-Q100 Grade-1


  • PGYes
  • SSExternal
  • Special FeaturesFrequency Adjustable, Hiccup Current Limit
  • GradeAutomotive
  • PackageQFN-20 (3x4), TSSOP20 EP
  • fsw (max) (kHz)1000
  • Regulated Outputs1
  • Iq (typ) (mA)0.75
  • Vfb (V)0.8
  • Max Duty Cycle (%)1
  • Vin (max) (V)40
  • Vin (min) (V)4
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.