ATL431LI-Q1

Product Folder Order Now Technical Documents Tools & Software Support & Community ATL431LI-Q1 ATL432LI-Q1 SNVSBB0A – MAY 2019 – REVISED NOVEMBER 2019 ATL431LI-Q1 / ATL432LI-Q1 High Bandwidth Low-IQ Programmable Shunt Regulator 1 Features 1 Qualified for automotive applications AEC-Q100 qualified with the following results: – Device temperature grade 1: –40°C to +125°C ambient operating temperature Reference voltage tolerance at 25°C – 0.5% (B grade) – 1% (A grade) Minimum typical output voltage: 2.5 V Adjustable output voltage: Vref to 36 V Operation from −40°C to +125°C 27 mV maximum temperature drift 0.3-Ω typical output impedance Sink-current capability – Imin = 0.08 mA (max) – IKA = 15 mA (max) Reference input current IREF: 0.4 μA (max) Deviation of reference input current over temperature, II(dev): 0.3 μA (max) 3 Description The ATL43xLI-Q1 is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. Its output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V with two external resistors. The device has a typical output impedance of 0.3 Ω. Its active output circuitry provides a very sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. This device is a pin-to-pin alternative to the TL431LI-Q1 ...