ARG81800
ARG81800 is 40V 500mA / 1.0A Synchronous Buck Regulators manufactured by Allegro MicroSystems.
ATURES AND BENEFITS
- Automotive AEC-Q100 qualified
- Input operating voltage range: 3.5 to 36 V
- - Withstands surge voltages to 40 V for load dump
- Low-Power (LP) mode- draws just 8 µA from VIN while maintaining 3.3 or 5.0 VOUT
- AUTO mode allows automatic transition between PWM and LP mode based on load current
- Programmable PWM frequency (f SW): 250 k Hz to 2.4 MHz
- PWM frequency dithering and controlled switch node slew rate reduce EMI/EMC signature
- CLKOUT allows interleaving and dithering of “downstream” regulators using their synchronization inputs
- Interleaving minimizes input filter capacitor requirement and improves EMI/EMC performance
- Synchronization of PWM frequency to external clock on
SYNCIN pin
- Adjustable output voltage: ±1.5% accuracy over operating temperature range (‒40°C to 150°C)
- Maximized duty cycle at low VIN improves dropout
- Soft recovery from dropout condition
- Adjustable soft-start time controls inrush current to acmodate a wide range of output capacitances
- External pensation provides flexibility to tune the system for maximum stability or fast transient response
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APPLICATIONS
- Infotainment
- Navigation Systems
- Instrument Clusters
- Audio Systems
- ADAS Applications
- Battery Powered Systems
- Industrial Systems
- Network and Tele
- Home Audio
- HVAC Systems
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