Texas Instruments

LM5117 Synchronous Buck Controller

Wide input range synchronous buck controller with analog current monitor from the PowerWise® family

Image of Texas Instruments' LM5117 Synchronous Buck ControllerTexas Instruments's LM5117 is a synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control utilizing an emulated current ramp. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting and ease of loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications.

Features
  • Emulated peak current mode control
  • Wide operating range from 5.5 V to 65 V
  • Robust 3.3 A peak gate drives
  • Adaptive dead-time output driver control
  • Free-run or synchronizable clock up to 750 kHz
  • Optional diode emulation mode
  • Programmable output from 0.8 V
  • Precision 1.5% voltage reference
  • Analog current monitor
  • Programmable current limit
  • Hiccup mode over current protection
  • Programmable soft-start and tracking
  • Programmable line under-voltage lockout
  • Programmable switch-over to external bias supply
  • Thermal shutdown

LM5117 Buck Controller

AfbeeldingOnderdeelnr. fabrikantBeschrijvingUitvoerconfiguratieTopologieAvailable QuantityPrijs
IC REG CTRLR BUCK 20TSSOPLM5117PMH/NOPBIC REG CTRLR BUCK 20TSSOPPositiefBuck318 - Immediate$5.73Details weergeven
Published: 2012-06-29

Related Product Highlight

LM5145 75 V Synchronous Buck Controller Texas Instruments offers the LM5145 75 V synchronous buck controller with an operational input voltage range from 6 V to 75 V.
LM5141 Synchronous Buck Controllers Texas Instruments' LM5141 is a synchronous buck controller used to convert a higher input voltage to a lower output voltage.
TPS54560 DC-DC Converter with Eco-Mode™ Texas Instruments' TPS54560 is a 60 V, 5 A, step-down (buck) regulator with an integrated high side n-channel MOSFET.