Zurück zu Monolithic Power Systems (MPS)

Monolithic Power Systems (MPS) MP4320 Switching Voltage Regulators

Monolithic Power Systems (MPS) MP4320 Switching Voltage Regulators are 350kHz to 1.8MHz configurable-frequency, synchronous, step-down switching converters with integrated internal high-side and low-side power MOSFETs. These regulators operate at 3.3V to 36V input voltage (VIN) range and 42V load dump tolerance that meet step-down applications in automotive input environments. The MP4320 regulators provide up to 0.5A of highly efficient output current (IOUT) with peak current mode control. The open-drain Power Good (PG) signal indicates whether the output is within 94.5% to 105.5% of its nominal voltage. The MP4320 regulators are available in a QFN-12 2mm x 3mm package with wettable flanks. These regulators are ideal for USB chargers, aftermarket automotive applications, battery-powered systems, and general consumer applications.

Features

  • Designed for aftermarket automotive applications:
    • Survives 42V load dump
    • Supports 3.1V cold crank
    • Up to 0.5A of continuous output current (IOUT)
    • Up to 36V continuous operation
    • -40°C to 125°C Junction Temperature (TJ) range
  • Increases battery life:
    • 1μA Shutdown Supply Current (ISD)
    • 20μA sleep mode Quiescent Current (IQ)
    • Advanced Asynchronous Modulation (AAM) mode increases efficiency under light loads
  • High performance for improved thermals:
    • Integrated 70mΩ High-Side and 50mΩ Low-Side MOSFETs (HS-FET and LS-FET)
    • 65ns minimum on time (tON_MIN)
    • 50ns minimum off time (tOFF_MIN)
  • Optimized for EMC/EMI:
    • Frequency Spread Spectrum (FSS) modulation
    • Symmetric VIN pinout
    • CISPR25 Class 5 compliant
    • 350kHz to 1.8MHz configurable switching frequency (fSW)
    • MeshConnect™ flip-chip package
  • Additional features:
    • Power Good (PG) output
    • Low-Dropout (LDO) mode
    • Fixed Output options are 1V, 1.8V, 2.5V, 3V, 3.3V, 3.8V, or 5V
    • Hiccup Over-Current Protection (OCP)
    • Available in a QFN-12 2mm x 3mm package
    • Available in a wettable flank package

Applications

  • USB chargers
  • Aftermarket automotive
  • Battery-powered systems
  • General consumers

Application Circuits

Application Circuit Diagram - Monolithic Power Systems (MPS) MP4320 Switching Voltage Regulators

Efficiency vs. Load Current

Performance Graph - Monolithic Power Systems (MPS) MP4320 Switching Voltage Regulators
Veröffentlichungsdatum: 2024-03-27 | Aktualisiert: 2024-05-13