TLV431B-Q1 Series

0.5% accuracy, low-voltage, adjustable precision shunt regulator

Catalog

0.5% accuracy, low-voltage, adjustable precision shunt regulator

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Part	Mounting Type	Voltage - Output (Max) [Max]	Supplier Device Package	Voltage - Output (Min/Fixed)	Package / Case	Output Type	Current - Cathode [custom]	Reference Type	Current - Output	Operating Temperature [Min]	Operating Temperature [Max]	Grade	Qualification	Tolerance
Texas Instruments TLV431BCPKG3	Surface Mount	6 V	SOT-89-3	1.24 V	TO-243AA	Adjustable	100 µA	Shunt	15 mA
Texas Instruments TLV431BQDBZT	Surface Mount	6 V	SOT-23-3	1.24 V	SC-59 SOT-23-3 TO-236-3	Adjustable	100 µA	Shunt	15 mA	-40 °C	125 °C
Texas Instruments TLV431BILPE3	Through Hole	6 V	TO-92-3	1.24 V	TO-226-3 TO-92-3	Adjustable	100 µA	Shunt	15 mA
Texas Instruments TLV431BCDBZRG4	Surface Mount	6 V	SOT-23-3	1.24 V	SC-59 SOT-23-3 TO-236-3	Adjustable	100 µA	Shunt	15 mA	0 °C	70 °C
Texas Instruments TLV431BQDBZRQ1	Surface Mount	6 V	SOT-23-3	1.24 V	SC-59 SOT-23-3 TO-236-3	Adjustable	100 µA	Shunt	15 mA	-40 °C	125 °C	Automotive	AEC-Q100
Texas Instruments TLV431BILPR	Through Hole	6 V	TO-92-3	1.24 V	TO-226-3 TO-92-3	Adjustable	100 µA	Shunt	15 mA	-40 °C	85 °C
Texas Instruments TLV431CLPE3	Through Hole	6 V	TO-92-3	1.24 V	TO-226-3 TO-92-3	Adjustable	80 µA	Shunt	15 mA	0 °C	70 °C			1.5 %
Texas Instruments TLV431IDBZRG4	Surface Mount	6 V	SOT-23-3	1.24 V	SC-59 SOT-23-3 TO-236-3	Adjustable	80 µA	Shunt	15 mA	-40 °C	85 °C			1.5 %
Texas Instruments TLV431ILP	Through Hole	6 V	TO-92-3	1.24 V	TO-226-3 TO-92-3	Adjustable	80 µA	Shunt	15 mA	-40 °C	85 °C			1.5 %
Texas Instruments TLV431ILPE3	Through Hole	6 V	TO-92-3	1.24 V	TO-226-3 TO-92-3	Adjustable	80 µA	Shunt	15 mA	-40 °C	85 °C			1.5 %

Key Features

• Low-voltage operation, VREF = 1.24VAdjustable output voltage, VO = VREF to 6VReference voltage tolerances at 25°C0.5% for TLV431B1% for TLV431A1.5% for TLV431Typical temperature drift4mV (0°C to 70°C)6mV (–40°C to 85°C)11mV (–40°C to 125°C)Low operational cathode current, 80µA typical0.25Ω typical output impedanceUltra-small SC-70 package offers 40% smaller footprint than SOT-23-3See TLVH431 and TLVH432 for:Wider VKA (1.24V to 18 V) and IK (80mA)Additional SOT-89 packageMultiple pinouts for SOT-23-3 and SOT-89 packagesOn products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. on all other products, production processing does not necessarily include testing of all parameters.Low-voltage operation, VREF = 1.24VAdjustable output voltage, VO = VREF to 6VReference voltage tolerances at 25°C0.5% for TLV431B1% for TLV431A1.5% for TLV431Typical temperature drift4mV (0°C to 70°C)6mV (–40°C to 85°C)11mV (–40°C to 125°C)Low operational cathode current, 80µA typical0.25Ω typical output impedanceUltra-small SC-70 package offers 40% smaller footprint than SOT-23-3See TLVH431 and TLVH432 for:Wider VKA (1.24V to 18 V) and IK (80mA)Additional SOT-89 packageMultiple pinouts for SOT-23-3 and SOT-89 packagesOn products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. on all other products, production processing does not necessarily include testing of all parameters.

Description

The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24V) and 6V with two external resistors (see the Parameter Measurement Information section). These devices operate from a lower voltage (1.24V) than the widely used TL431 and TL1431 shunt-regulator references. When used with an optocoupler, the TLV431 device is an ideal voltage reference in isolated feedback circuits for 3V to 3.3V switching-mode power supplies. These devices have a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turnon characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies. The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24V) and 6V with two external resistors (see the Parameter Measurement Information section). These devices operate from a lower voltage (1.24V) than the widely used TL431 and TL1431 shunt-regulator references. When used with an optocoupler, the TLV431 device is an ideal voltage reference in isolated feedback circuits for 3V to 3.3V switching-mode power supplies. These devices have a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turnon characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.