Wide Input Voltage Synchronous Buck Controller with Programmable Frequency and NPOR

A8660

The A8660 offers a robust and versatile solution for synchronous buck conversion, featuring a wide input voltage range, adjustable output voltage, programmable frequency, and NPOR output.

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Top Features

Packaging

  • Automotive AEC-Q100 qualified
  • Wide operating voltage range: 3.0 to 45 V
  • Adjustable output voltage
  • PWM frequency dithering reduces EMI/EMC signature and minimizes input filtering
  • Programmable base frequency (fOSC): 200 kHz to 2.2 MHz
  • For low frequency, high current designs (<520 kHz), applying a clock to SYNCIN will synchronize the PWM frequency to avoid AM band harmonic interference
  • Soft recovery from dropout avoids overshoot of VOUT
  • External compensation provides flexibility to tune the system for maximum stability or optimum transient response
  • Adjustable soft-start time controls inrush current to accommodate a wide range of output capacitance
  • Pre-bias startup allows quick, monotonic restart and avoids reset
  • High-voltage ENBAT input for ignition/key control
  • Logic enable (ENB) input for microcontroller or DSP control
  • NPOR open-drain output with adjustable rising delay
  • Overvoltage, pulse-by-pulse current limit, hiccup mode short circuit, and thermal protections
  • Robust FMEA: pin open/short and component faults

Part Number Specifications and Availability

Documentation and Resources

Documentation

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Documents Found: 32
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Guide
A8660 Evaluation Board User Guide