LM51561

www.ti.com LM5156, LM51561 SNVLSMBI561–5J6A,NLUMAR5Y12506211 SNVSBI6 – JANUARY 2021 LM5156x 2.2-MHz Wide VIN 65-V Non-synchronous Boost/SEPIC/Flyback Controller with Dual Random Spread Spectrum 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 (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...