LM5149-Q1

LM5149-Q1 SNVSBN7C – DECEMBER 2020 – REVISED FEBRUARY 2023 LM5149-Q1 80-V Automotive, Synchronous, Buck, DC/DC Controller with Ultra-Low IQ and Integrated Active EMI Filter 1 Features AEC-Q100 qualified for automotive applications: – Device temperature grade 1: –40°C to +125°C ambient operating temperature Functional Safety-Capable – Documentation available to aid functional safety system design Two integrated EMI mitigation mechanisms – Active EMI Filter for enhanced EMI performance at lower frequencies – Selectable dual random spread spectrum (DRSS) for enhanced EMI performance across low and high-frequency bands – EMI reduced by an average of 25 dBµV – Reduces the external differential-mode input filter size by 50% and lowers systems cost Versatile synchronous buck DC/DC controller – Wide input voltage range of 3.5 V to 80 V – 1% accurate, fixed 3.3 V, 5 V, 12 V, or adjustable output from 0.8 V to 55 V – 150°C maximum junction temperature – Shutdown mode current: 2.3 µA – No-load sleep current: 9.5 µA – Stackable up to two phases Switching frequency from 100 kHz to 2.2 MHz – SYNC in and SYNC out capability Inherent protection features for robust design – Internal hiccup-mode overcurrent protection – ENABLE and PGOOD functions – VCC, VDDA, and gate-drive UVLO protection – Thermal shutdown protection with hysteresis Create a custom design using the LM5149-Q1 with WEBENCH® Power Designer VIN = 3.5 V...80 V 2 Applications Automotive electronic systems Infot...