DCDC Regulators
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.
Product Details
Product Details
Top Features
- 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
