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DC/DC Controller, Poly Phase, 4.5V to 65V, 1 Output, Synchronous Boost, 875kHz, HTSSOP-20


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Product Overview

The LM5122MHE/NOPB is a multiphase capable synchronous Boost Controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak current-mode control. current-mode control provides inherent line feed-forward, cycle-by-cycle current limiting and ease of loop compensation. The switching frequency is programmable up to 1MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. User-selectable diode emulation mode also enables discontinuous mode operation for improved efficiency at light load conditions. An internal charge pump allows 100% duty cycle for high-side synchronous switch (Bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup mode current limit and adjustable line undervoltage lockout.
  • Peak current mode control
  • Robust 3A Integrated gate drivers
  • Adaptive dead-time control
  • Optional diode emulation mode
  • Programmable cycle-by-cycle current limit
  • Hiccup mode overload protection
  • Programmable line UVLO
  • Programmable soft-start
  • Thermal shutdown protection
  • Programmable slope compensation
  • Programmable skip cycle mode reduces standby power
  • Allows external VCC supply
  • Inductor DCR current sensing capability
  • Multiphase capability
  • Green product and no Sb/Br


Automotive, Audio, Power Management


Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

Product Information

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1 Output





Synchronous Boost (Step Up)





MSL 1 - Unlimited

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Packaging type Cut Tape
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Re-reel (minimum 100/reel):3008667RL Check stock

911 total stock globally Need more?

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