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Automotive Buck-Boost Controller with Integrated Buck MOSFET for Wide VIN Range Applications

A4450

A4450 Product image

The A4450 provides flexible and efficient power management for automotive applications where input voltage can be above or below the regulated output voltage. It features an integrated buck MOSFET, wide operating range (3V-36V), and comprehensive protection features.

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Top Features

Packaging

  • Automotive AEC-Q100 qualified
  • Wide operating range of 3 to 36 VIN, 40 VIN maximum, covers automotive stop/start, cold crank, double battery, and load dump
  • Regulated output can operate up to 2 A DC
  • Adjustable PWM switching frequency: 250 kHz to 2.2 MHz
  • PWM frequency can be synchronized to external clock: 250 kHz to 2.4 MHz
  • Frequency dithering helps reduce EMI/EMC
  • Undervoltage protection
  • Pin-to-pin and pin-to-ground tolerant at every pin
  • Thermal shutdown protection
  • Operating junction temperature range −40°C to 150°C

Typical Applications

The A4450 is supplied in a 20 pin 4 × 4 mm QFN (suffix “ES”) package with a wettable flank and exposed power pad.

ES Package Documentation

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Part Number Specifications and Availability

Documentation and Resources

Documentation

Design Support Tools

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An Efficient Voltage-Optimized LED Driver (A80804) with Buck-Boost Controller (A4450)
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A4450 Design Tool