LM51571-Q1 Datasheet | Texas Instruments

Features - AEC-Q100 qualified for automotive applications - Temperature grade 1: - 40°C to +125°C TA - Functional Safety-Capable - Documentation available to aid functional safety system design - Suited for wide operating range for car battery applications - 2.9-V to 45-V input operating range - 48-V maximum output (50-V abs max) - Minimum boost supply voltage of 1.5 V when BIAS ≥ 2.9 V - Input transient protection up to 50 V - Minimized battery drain - Low shutdown current (IQ ≤ 2.6 µA) - Low operating current (IQ ≤ 700 µA) - Small solution size and low cost - Maximum switching frequency up to 2.2 MHz - 16-pin QFN package (3 mm × 3 mm) with wettable flanks - Integrated error amplifier allows primary-side regulation without optocoupler (flyback) - Minimized undershoot during cranking (start- stop application) - Accurate current limit (see the Device parison Table) - EMI mitigation - Selectable dual random spread spectrum - Lead-less package - Higher efficiency with low-power dissipation - 45-mΩ RDSON switch - Fast switching, small switching loss - Avoid AM band interference and crosstalk - Optional clock synchronization - Dynamically programmable wide switching frequency from 100 k Hz to 2.2 MHz - Integrated protection features - Constant current limiting over input voltage - Selectable hiccup mode overload protection - Programmable line UVLO - OVP protection - Thermal shutdown - Accurate ±1% accuracy feedback reference - Adjustable soft start - PGOOD indicator - Create a custom design using the LM5157x-Q1 with the WEBENCH® Power...