The A8591 provides efficient and quiet power conversion for automotive applications, with selectable PFM/PWM modes for optimized light-load efficiency and a sleep mode for ultra-low standby current.
Product Details
Product Details
Top Features
- Automotive AEC-Q100 qualified
- Withstands surge input to 40 VIN for load dump
- Operates down to 3.4 VIN (typ), 3.6 VIN (max) for idle stop
- Utilizes pulse-frequency modulation (PFM) for low-IQ mode
- 10 μA Sleep mode (automatic PWM / Low-IQ PFM mode selection)
- Fixed output voltage options: 3.3 or 5 V with ±1% accuracy
- Delivers up to 2 A of output current
- Integrated 110 mΩ high-side MOSFET
- Adjustable switching frequency from 300 kHz to 2.4 MHz
- EMI reduction features:
- Frequency dithering
- Controlled switching node
- External synchronization capability
- Maximum duty cycle for low dropout
- Active low NPOR output with 7.5 ms delay
- Pre-bias startup capable: VOUT increases monotonically, will not cause a reset
- External compensation for maximum flexibility
- Stable with ceramic or electrolytic output capacitors
- Internally fixed soft-start time of 5 ms
- Pulse-by-pulse current limit, hiccup mode short-circuit, and thermal protections
- Pin open/short and component fault tolerant
- –40°C to 150°C operating junction temperature range
- Thermally enhanced DFN-10 surface-mount package
