1 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 (I_Q ≤ 2.6 µA)
  - Low operating current (I_Q ≤ 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