Description

The synchronous buck converter LM5163DDAR is designed to regulate a wide range of input voltages, reducing the requirement for external surge suppression components. Large step-down conversion ratios are facilitated by a minimum adjustable on-time of 50 ns, allowing straight step-down from a 48-V nominal input to low-voltage rails for decreased system complexity and solution cost. The LM5163DDAR works at approximately 100% duty cycle during input voltage drops as low as 6 V, making it a good choice for wide input supply range industrial and large cell count battery pack applications.

Features

? Ultra–low EMI emission

– Optimized for CISPR 25 class 5 standard

? Integration reduces solution size and cost

– COT mode control architecture

– Integrated 0.725-Ω NFET buck switch

– 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

– Open-drain power good indicator

– 8-Pin SOIC package with PowerPAD?

? Create a custom regulator design using WEBENCH? power designer

? 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 Industrial power supplies and battery packs

– 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

Applications

? Industrial battery pack (≥10S)

? Battery pack – e-bike/e-scooter/LEV

? Motor drives

? Drones

? Communications equipment