Automotive 3A Buck Regulator with Low-Iq Standby, Sleep Mode, and Enhanced Idle/Stop Recovery

• Automotive AEC-Q100 qualified
• Withstands surge voltages up to 40 V
• Operates as low as 3.4 V_IN (typ) with V_IN decreasing
• Utilizes pulse frequency modulation (PFM) to draw only tens of microamperes from VIN while maintaining keep-alive VOUT
• PWM/PFM mode control input pin
• Delivers up to 3.0 A of output current with integrated 110 mΩ high voltage MOSFET
• SLEEP input pin commands ultra-low current shutdown mode
• Adjustable output voltage with ±1.0% accuracy from 0°C to 85°C, ±1.5% from –0°C to 150°C
• Programmable switching frequency: 250 kHz to 2.4 MHz
• Synchronization capability: applying a clock input to the PWM/PFM input pin will increase the PWM frequency
• Active low, power-on reset (NPOR) open-drain output
• Maximized duty cycle for low dropout
  • Enhanced recovery Idle-Stop Transients
• Pre-bias startup capable, VOUT will not cause a reset
• External compensation for maximum flexibility
• Stable with ceramic or electrolytic output capacitors
• Excellent set of protection features to satisfy the most demanding applications
• Overvoltage, pulse-by-pulse current limit, hiccup mode short circuit, and thermal protection
• Robust FMEA, with pin open/short and component faults
• Thermally enhanced, surface mount package

Typical Applications

• Instrument Clusters
• Audio Systems
• Navigation
• HVAC