Description
●The LM5116 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
●• Wide Operating Range Up to 100 V
●• Low IQ Shutdown (< 10 µA)
●• Drives Standard or Logic Level MOSFETs
●• Robust 3.5-A Peak Gate Drive
●• Free-run or Synchronous Operation to 1 MHz
●• Optional Diode Emulation Mode
●• Programmable Output from 1.215 V to 80 V
●• Precision 1.5% Voltage Reference
●• Programmable Current Limit
●• Programmable Soft-Start
●• Programmable Line Undervoltage Lockout
●• Automatic Switch to External Bias Supply
●• HTSSOP-20 Exposed Pad
●• Thermal Shutdown
●• Create a Custom Design Using the LM5116 with the WEBENCH Power Designer
●Applications
●• Automotive Infotainment
●• Industrial DC-DC Motor Drivers
●• Automotive USB Adapters
●• Telecom Servers
