The LM5157x-Q1 device is a wide input range, nonsynchronous boost converter with integrated 50-V, 6.5-A (LM5157-Q1) or 50-V, 4.33-A (LM51571-Q1) power switch.
The device can be used in boost, SEPIC, and flyback topologies.
The device can start up from a single-cell battery with a minimum of 2.9 V.
Full PDF Text Transcription for LM5157-Q1 (Reference)
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LM5157-Q1. For precise diagrams, and layout, please refer to the original PDF.
LM5157-Q1, LM51571-Q1 SNVSBK8B – OCTOBER 2020 – REVISED AUGUST 2023 LM5157x-Q1 2.2-MHz Wide VIN 50-V Boost/SEPIC/Flyback Converter with Dual Random Spread Spectrum 1 Feat...
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Boost/SEPIC/Flyback Converter with Dual Random Spread Spectrum 1 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
LM5157-Q1 Datasheet
