Back to Monolithic Power Systems (MPS)

Monolithic Power Systems (MPS) MPQ2189 AEC-Q100 Synchronous Step-Down Converters

Monolithic Power Systems (MPS) MPQ2189 AEC-Q100 Synchronous Step-Down Converters are highly integrated, high-frequency switching voltage regulators with an I2C interface. MPQ2189 supports up to 4A load current across a 2.7V to 6V input voltage (VIN) supply range with high load/line regulation. Constant-frequency hysteretic mode provides a fast transient response without loop compensation to achieve high efficiency under light-load conditions.

The compact QFN-14 (2.5mm x 3mm) packaged MPQ2189 offers a controllable output voltage (VOUT) through a 3.4Mbps I2C serial interface. The output voltage (VOUT) range can be adjusted from 0.6V to 1.235V in 5mV steps. The I2C interface configures the VOUT slew rate, switching frequency (fSW), and power-save mode. MPS MPQ2189 Step-Down Converters provide protection features, including internal soft start, over-current protection (OCP), and thermal shutdown.

Features

  • Flexible with an I2C interface
    • I2C-configurable output voltage (VOUT) range from 0.6V to 1.235V in 5mV steps
    • Adjustable Switching Frequency (fSW) from 0.85MHz to 2.2MHz
    • I2C-compatible interface up to 3.4Mbps
    • Power-Save Mode selectable via I2C
  • Designed for heavy loads
    • Up to 4A load current
    • Internal 40mΩ high-side and 22mΩ low-side power MOSFETs
  • 2.7V to 6V input voltage (VIN) range
  • Internal 165µs soft start
  • Power Good (PG) indicator
  • Current overload and thermal shutdown protection
  • Available package options
    • QFN-14 (2.5mm x 3mm)
    • Wettable flank
  • AEC-Q100 Grade 1 availalbe

Applications

  • Automotive infotainment systems
  • Automotive telematics systems
  • Advanced Driver Assistance Systems (ADAS)
  • Other automotive applications
  • Processor core supplies

Specifications

  • Recommended operating conditions
    • 2.7V to 6V supply range
    • 0.6V to 1.235V output range
    • -40°C to +125°C operating junction temperature range
  • 3.78W maximum power
  • 300μA (PFM) or 780μA (PWM) typical quiescent current
  • 1μA maximum  shutdown current
  • 0.579V to 0.621V internal reference voltage range
  • 5mV output voltage step
  • Switch-on resistance
    • 40mΩ typical high-side, 80mΩ maximum
    • 22mΩ typical low-side, 45mΩ maximum
  • 2.55V typical UVLO rising threshold, 2.8V maximum
  • 150mV typical UVLO hysteretic
  • 0.85MHz to 2.2MHz switching frequency range
  • 60ns (typical) minimum on time
  • Switch leakage
    • 1μA maximum high-side
    • 10μA maximum low-side
  • 165µs typical soft-start time
  • 500Ω typical discharge resistor
  • +170°C thermal shutdown
  • 7-bit DAC resolution
  • ESD ratings
    • Class 2 Human Body Mode (HBM)
    • Class C2b Charged Device Mode (CDM)

Typical Application

Application Circuit Diagram - Monolithic Power Systems (MPS) MPQ2189 AEC-Q100 Synchronous Step-Down Converters

Block Diagram

Block Diagram - Monolithic Power Systems (MPS) MPQ2189 AEC-Q100 Synchronous Step-Down Converters
Published: 2023-01-19 | Updated: 2023-02-01