TL431LI-Q1 Series

Adjustable precision shunt regulator with optimized reference current (pin layout: KRA)

Catalog

Adjustable precision shunt regulator with optimized reference current (pin layout: KRA)

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Part	Reference Type	Current - Cathode	Current - Output	Voltage - Output (Min/Fixed) [Min]	Package / Case	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Max) [Max]	Supplier Device Package	Mounting Type	Current - Cathode [custom]	Grade	Qualification	Tolerance	Package / Case [custom]	Package / Case [custom]	Package / Case [y]	Package / Case [x]
Texas Instruments TL431BILPE3	Shunt	700 µA	100 mA	2.495 V	TO-226-3 TO-92-3	Adjustable	85 °C	-40 °C	36 V	TO-92-3	Through Hole
Texas Instruments TL431BIDBZRG4	Shunt	700 µA	100 mA	2.495 V	SC-59 SOT-23-3 TO-236-3	Adjustable	85 °C	-40 °C	36 V	SOT-23-3	Surface Mount
Texas Instruments TL431LIBQDBZRQ1	Shunt		15 mA	2.495 V	SC-59 SOT-23-3 TO-236-3	Adjustable	125 °C	-40 °C	36 V	SOT-23-3	Surface Mount	600 µA	Automotive	AEC-Q100
Texas Instruments TL431QDCKTG4	Shunt		100 mA	2.495 V	6-TSSOP SC-88 SOT-363	Adjustable	125 °C	-40 °C	36 V	SC-70-6	Surface Mount	1 mA			2.2 %
Texas Instruments TL431BIDBVRE4	Shunt	700 µA	100 mA	2.495 V	SC-74A SOT-753	Adjustable	85 °C	-40 °C	36 V	SOT-23-5	Surface Mount
Texas Instruments TL431CPWE4	Shunt		100 mA	2.495 V	8-TSSOP	Adjustable	70 °C	0 °C	36 V	8-TSSOP	Surface Mount	1 mA			2.2 %	0.173 "	4.4 mm
Texas Instruments TL431IDR	Shunt		100 mA	2.495 V	8-SOIC	Adjustable	85 °C	-40 °C	36 V	8-SOIC	Surface Mount	1 mA			2.2 %			3.9 mm	0.154 in
Texas Instruments TL431BCLP	Shunt		100 mA	2.495 V	TO-226-3 TO-92-3	Adjustable	70 °C	0 °C	36 V	TO-92-3	Through Hole	600 µA
Texas Instruments TL431AIDR	Shunt	700 µA	100 mA	2.495 V	8-SOIC	Adjustable	85 °C	-40 °C	36 V	8-SOIC	Surface Mount				1 %			3.9 mm	0.154 in
Texas Instruments TL431QDBZT	Shunt		100 mA	2.495 V	SC-59 SOT-23-3 TO-236-3	Adjustable	125 °C	-40 °C	36 V	SOT-23-3	Surface Mount	1 mA			2.2 %

Catalog

Adjustable precision shunt regulator with optimized reference current (pin layout: KRA)

Key Features

• Qualified for automotive applicationsAEC-Q100 qualified with the following results:Device temperature grade 1: –40°C to +125°C ambient operating temperatureDevice temperature grade 0: –40°C to +150°C ambient operating temperatureReference voltage tolerance at 25°C0.5% (B grade)1% (A grade)Minimum typical output voltage: 2.495 VAdjustable output voltage: Vrefto 36 V27 mV maximum temperature drift for grade 134 mV maximum temperature drift for grade 00.3-Ω typical output impedanceSink-current capabilityImin= 0.6 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)Qualified for automotive applicationsAEC-Q100 qualified with the following results:Device temperature grade 1: –40°C to +125°C ambient operating temperatureDevice temperature grade 0: –40°C to +150°C ambient operating temperatureReference voltage tolerance at 25°C0.5% (B grade)1% (A grade)Minimum typical output voltage: 2.495 VAdjustable output voltage: Vrefto 36 V27 mV maximum temperature drift for grade 134 mV maximum temperature drift for grade 00.3-Ω typical output impedanceSink-current capabilityImin= 0.6 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)

Description

The TL431LI-Q1 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 2.495 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 industry standard TL431-Q1 with optimized Irefand IIdevperformance. The lower Irefand IIdevvalues of the TL431LI-Q1 enable designers to achieve higher system accuracy and lower leakage current. The TL432LI-Q1 has exactly the same functionality and electrical specifications as the TL431LI-Q1, but has a different pinout for the DBZ package. The TL431LI-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 TL431LI-Q1 is also available in two temperature grades: grade 1 (denoted by a ’Q’ in the part number), and grade 0 (denoted by a ’E’ in the part number), which represent maximum ambient operating temperatures of 125°C and 150°C respectively. The TL43xLI-Q1 is characterized for operation from –40°C to 125°C for grade 1, and –40°C to 150°C for grade 0, and its low output drift versus temperature ensures good stability over the entire temperature range. The TL431LI-Q1 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 2.495 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 industry standard TL431-Q1 with optimized Irefand IIdevperformance. The lower Irefand IIdevvalues of the TL431LI-Q1 enable designers to achieve higher system accuracy and lower leakage current. The TL432LI-Q1 has exactly the same functionality and electrical specifications as the TL431LI-Q1, but has a different pinout for the DBZ package. The TL431LI-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 TL431LI-Q1 is also available in two temperature grades: grade 1 (denoted by a ’Q’ in the part number), and grade 0 (denoted by a ’E’ in the part number), which represent maximum ambient operating temperatures of 125°C and 150°C respectively. The TL43xLI-Q1 is characterized for operation from –40°C to 125°C for grade 1, and –40°C to 150°C for grade 0, and its low output drift versus temperature ensures good stability over the entire temperature range.