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
