Transcription of LM25118 Wide Voltage Range Buck-Boost Controller …
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LM25118 Wide Voltage Range Buck-Boost Controller …
Product Order Technical Tools & Support &. Folder Now Documents Software Community LM25118 . SNVS726F JULY 2011 REVISED MARCH 2018. LM25118 Wide Voltage Range Buck-Boost Controller 1 Features 3 Description . 1 Input Voltage Operating Range From 3 V to 42 V The LM25118 wide Voltage Range Buck-Boost switching regulator Controller features all of the Emulated Peak Current Mode Control functions necessary to implement a high- Smooth Transition Between Step-Down and Step- performance, cost-efficient Buck-Boost regulator Up Modes using a minimum of external components. The buck - Switching Frequency Programmable to 500 KHz boost topology maintains output Voltage regulation when the input Voltage is either less than or greater Oscillator Synchronization Capability than the output Voltage making it especially suitable Internal High Voltage Bias Regulator for automotive applications. The LM25118 operates Integrated High and Low-Side Gate Drivers as a buck regulator while the input Voltage is Programmable Soft-Start Time sufficiently greater than the regulated output Voltage and gradually transitions to the Buck-Boost mode as Ultra-Low Shutdown Current the input Voltage approaches the output.
(8) fb vin (1) (16) vcc rt (3) (18) hb vout agnd (6) pgnd (14) dap (ep) (13) csg ramp (5) ss (7) (12) cs (15) lo (10) vout (19) ho (20) hs (9) comp lm25118mh vin
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