LM5164DDAT Description

The synchronous buck converter LM5164DDAT is intended to regulate over an extensive input voltage range, reducing the need for external surge suppression components. With a minimum controllable on-time of 50 ns, significant step-down conversion ratios are possible, allowing direct step-down from a 48-V nominal input to low-voltage rails for decreased system complexity and solution cost. The LM5164DDAT works at approximately 100 percent duty cycle with input voltage dips as low as 6 V, making it a good choice for wide input supply range industrial and large cell count battery pack applications.

LM5164DDAT Features

• 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 1MHz

     -Diode emulation for high light-load efficiency

     -10.5-μAno-load input quiescent current

     -3-μA shutdown quiescent current

     -Optimized for CISPR 32 EMI standard

• Integration reduces solution size and cost

     -COT mode control architecture

     -The Integrated 0.725-ΩNFET buck switch supports a wide duty-cycle range

     -Integrated 0.34-Ω NFETsynchronous 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 is a good indicator

     -8-Pin SOIC package withPowerPAD?

LM5164DDAT Applications

• Appliances 

• power and garden tools

• High-cell-count battery packs (E-Bike, E-Scooter)

• Motor drives

• drones

• telecom