Datasheet Texas Instruments ATL431LIBQDBZRQ1

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Detailed 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 V_ref (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 and TL432LI-Q1, with lower minimum operating current to help reduce system power consumption. The ATL432LI-Q1 has exactly the same functionality and electrical specifications as the ATL431LI-Q1, but has a different pinout for the DBZ package.

The ATL431LI-Q1 is offered in two grades, with initial tolerances (at 25°C) of 0.5%, and 1%, for the B and A grade, respectively. The ATL43xLI-Q1 is characterized for operation from –40°C to +125°C, and its low output drift versus temperature ensures good stability over the entire temperature range.

Parametrics

Reference Type	Shunt
Output Type	Adjustable
Voltage - Output (Min/Fixed)	2.5 V
Voltage - Output (Max)	36 V
Current - Output	15 mA
Package / Case	SOT-23-3
Tolerance	-0.5~0.5 %
Operating Temperature	-40~125 °C
Current Cathode	80 µA
Grade	Automotive
Qualification	AEC-Q100
RoHS	Yes
Product Status	Active
Packaging	Cut Tape Tape & Reel

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Parametrics

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ATL432LI-Q1

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Manufacturer's Classification

• Power management > Voltage references > Shunt voltage references