• Functional Safety-Capable

  Documentation available to aid functional safety

  system design

• Wide input operating range for battery applications

  3.5-V to 45-V operating range

  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 50 V

• Minimized battery drain

  Low shutdown current (IQ ≤ 2.6 μA)

  Low operating current (IQ ≤ 480 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)

  Minimized undershoot during cranking (startstop

  application)

• Higher efficiency with low-power dissipation

  100-mV ±7% Low 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 short-circuit protection

  (see the Device Comparison Table)

  Programmable line UVLO

  OVP protection

  Thermal shutdown

• Accurate ±1% accuracy feedback reference

• Programmable extra slope compensation

• Adjustable soft start

• PGOOD indicator

• Create a custom design using the LM5155x with

  the WEBENCH® power designer