LM5163QDDARQ1: Synchronous Buck Converter, Step-Down, Pinout

The synchronous buck converter LM5163QDDARQ1 is intended to regulate over a large input voltage range, reducing the need for external surge suppression components. A minimum adjustable on-time of 50 ns allows for significant step-down conversion ratios, allowing direct step-down from a 48-V nominal input to low-voltage rails, reducing system complexity and solution cost. The LM5163QDDARQ1 operates at approximately 100% duty cycle during input voltage dips as low as 6 V, making it a good choice for highperformance 48-V battery automotive applications and MHEV/EV systems.

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• AEC-Q100-qualified for automotive applications

– Device temperature grade 1: –40°C to +125°C,

ambient temperature range

• Designed for reliable and rugged applications

– Wide input voltage range of 6 V to 100 V

– Junction temperature range: –40°C to +150°C

– Fixed 3-ms internal soft-start timer

– Peak and valley current-limit protection

– Input UVLO and thermal shutdown protection

• Suited for scalable automotive power supplies

– Low minimum on- and off-times of 50 ns

– Adjustable switching frequency up to 1 MHz

– Diode emulation for high light-load efficiency

– 10.5-µA no-load input quiescent current

– 3-µA shutdown quiescent current

– Optimized for CISPR 25 EMI standard

• Integration reduces solution size and cost

– COT mode control architecture

– Integrated 0.725-Ω NFET buck switch supports a wide duty cycle range

– Integrated 0.34-Ω NFET synchronous rectifier eliminates external Schottky diode

– 1.2-V internal voltage reference

– No loop compensation components

– Internal VCC bias regulator and boot diode

• Create a custom design using WEBENCH® power designer

NA LM5163QDDARQ1 technical specifications, attributes, parameters and parts with similar specifications to NA LM5163QDDARQ1.

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