LM25118

Product Folder Order Now Technical Documents Tools & Software Support & Community LM25118 SNVS726F – JULY 2011 – REVISED MARCH 2018 LM25118 Wide Voltage Range Buck-Boost Controller 1 Features 1 Input Voltage Operating Range From 3 V to 42 V Emulated Peak Current Mode Control Smooth Transition Between Step-Down and Step- Up Modes Switching Frequency Programmable to 500 KHz Oscillator Synchronization Capability Internal High Voltage Bias Regulator Integrated High and Low-Side Gate Drivers Programmable Soft-Start Time Ultra-Low Shutdown Current Enable Input Wide Bandwidth Error Amplifier 1.5% Feedback Reference Accuracy Thermal Shutdown Package: 20-Pin HTSSOP (Exposed Pad) Create a Custom Design Using the LM25118 With the WEBENCH® Power Designer 2 Applications Industrial Buck-Boost Supplies 3 Description The LM25118 wide voltage range Buck-Boost switching regulator controller features all of the functions necessary to implement a highperformance, cost-efficient Buck-Boost regulator using a minimum of external components. The BuckBoost topology maintains output voltage regulation when the input voltage is either less than or greater than the output voltage making it especially suitable for automotive applications. The LM25118 operates as a buck regulator while the input voltage is sufficiently greater than the regulated output voltage and gradually transitions to the buck-boost mode as the input voltage approaches the output. This dualmode appr...