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LM5122QMHE/NOPB

DC-DC Switching Boost Step Up Regulator, Adjustable, 4.5V-65Vin, 3V-100Vout, 15Aout, HTSSOP-20

LM5122QMHE/NOPB - DC-DC Switching Boost Step Up Regulator, Adjustable, 4.5V-65Vin, 3V-100Vout, 15Aout, HTSSOP-20

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Manufacturer Part No:
LM5122QMHE/NOPB
Order Code:
3121599

Product Overview

The LM5122QMHE/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. A 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.
  • Bypass (VOUT=VIN) operation
  • 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 function
  • Thermal shutdown protection
  • 9µA Low shutdown quiescent current
  • Programmable slope compensation
  • Programmable skip cycle mode reduces standby power
  • Allows external VCC supply
  • Inductor DCR current sensing capability
  • Free-run and synchronizable switching to 1MHz
  • 1.2V Voltage reference with ±1% accuracy
  • Green product and no Sb/Br

Applications

Power Management, Automotive, Audio

Product Information

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:
Synchronous Boost (Step Up)

:
4.5V

:
65V

:
1Outputs

:
HTSSOP

:
20Pins

:
15A

:
3V

:
100V

:
1MHz

:
125°C

:
-

:
-

:
MSL 1 - Unlimited
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