2.2 MHz Wide Input Nonsynchronous Boost, SEPIC, Flyback Controller, SCT81420 P2P LM51561.
FEATURES

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LM51561 LM51561.pdf

No.13284

FEATURES

• Functional Safety-Capable

  Documentation available to aid functional safety

  system design

• Suited for wide input operating range battery

  applications

  3.5-V to 60-V operating range (65-V abs max)

  2.97-V to 16-V when BIAS = VCC

  Minimum boost supply voltage 1.5 V when

  BIAS ≥ 3.5 V

  Input transient protection up to 65 V

  Minimized battery drain

• Low shutdown current (IQ ≤ 2.6 μA)

• Low operating current (IQ ≤ 490 μA)

• Small solution size and low cost

  Maximum switching frequency of 2.2 MHz

  12-Pin WSON package (3 mm × 2 mm)

  Integrated error amplifier allows primary-side

  regulation without optocoupler (flyback)

• EMI mitigation

  Selectable dual random spread spectrum

  Lead-less package

• Higher efficiency with low-power dissipation

  100-mV ±7% accurate current limit threshold

  Strong 1.5-A peak standard MOSFET driver

  Supports external VCC supply

• Avoid AM band interference and crosstalk

  Optional clock synchronization

  Dynamically programmable switching frequency

  from 100 kHz to 2.2 MHz

• Integrated protection features

  Constant peak current limiting over input

  voltage

  Optional hiccup mode overload protection (see

  the Device Comparison Table)

  Programmable line UVLO

  OVP protection

  Thermal shutdown

• ±1% accuracy feedback reference

• Supports additional slope compensation

• Programmable soft start

• PGOOD indicator

• Create a custom design using the LM5156x with

  the WEBENCH® power designer

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