LM5116 Datasheet PDF

●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