ATL431LI

Product Folder Order Now Technical Documents Tools & Software Support & Community ATL431LI ATL432LI SLVSDU6D – JULY 2017 – REVISED NOVEMBER 2019 ATL431LI / ATL432LI High Bandwidth Low-Iq Programmable Shunt Regulator 1 Features 1 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 (Q temp) Maximum temperature drift – 17 mV (I Temp) – 27 mV (Q Temp) 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) Packages: 1-mm x 1-mm X2SON or SOT23-3 2 Applications Adjustable voltage and current referencing Secondary side regulation in Flyback SMPS Zener diode replacement Voltage monitoring Precision constant current sink/source Comparator with integrated reference 3 Description The ATL43xLI device is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors. These devices have a typical output impedance of 0.3 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many application...