LM25119

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design LM25119Q SLUSD97 – APRIL 2018 LM25119Q Wide Input Range, Dual Synchronous Buck Controller 1 Features 1 Qualified for Automotive Applications AEC-Q100 Qualified With the Following Results: – Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range – Device HBM ESD Classification Level 1C – Device CDM ESD Classification Level C4A Emulated Peak Current Mode Control Wide Operating Range (4.5 V to 42 V) Easily Configurable for Dual Outputs or Interleaved Single Output Robust 3.3-A Peak Gate Drive Switching Frequency Programmable to 750 kHz Optional Diode Emulation Mode Programmable Output From 0.8 V Precision 1.5% Voltage Reference Programmable Current Limit Hiccup Mode Overload Protection Programmable Soft-Start Programmable Line Undervoltage Lockout Automatic Switchover to External Bias Supply Channel2 Enable Logic Input Thermal Shutdown Leadless 32-Pin WQFN Package 2 Applications Automotive Infotainment Automotive USB Accessory Adapters 3 Description The LM25119Q device is a dual 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 using an emulated current ramp. Current mode control provides inherent line feedforward, cycle-by-cycle current limiting and easeof-loop compensation. The use ...