TLV431BIDBZRG4 product image


Voltage References
Texas Instruments
The TLV431(TLV431BIDBZRG4) 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 (1.24 V) and 6 V with two external resistors (see Figure 2). These devices operate from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references. When used with an optocoupler, the TLV431 is an ideal voltage reference in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. These devices have a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turn-on characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
TLV431BIDBZRG4 Features
• Low-Voltage Operation ...VREF = 1.24 V
• Adjustable Output Voltage, VO = VREF to 6 V
• Reference Voltage Tolerances at 25C
− 0.5% for TLV431B
− 1% for TLV431A
− 1.5% for TLV431
• Typical Temperature Drift
− 4 mV (0C to 70C)
− 6 mV (–40C to 85C)
− 11 mV (–40C to 125C)
• Low Operational Cathode Current . . .80 µA Typ
• 0.25-Ω Typical Output Impedance Ultra-Small SC-70 Package Offers 40%Smaller Footprint Than SOT-23-3
• See TLVH431 and TLVH432 for
− Wider VKA (1.24 V to 18 V) and IK (80 mA)
− Additional SOT-89 Package
− Multiple Pinouts for SOT-23-3 and SOT-89 Packages


Initial Accuracy:0.5 %
Series VREF - Input Voltage (Max):7 V
Shunt Current (Max):15 mA
Maximum Operating Temperature:+ 85 C
Minimum Operating Temperature:- 40 C
Shunt Current (Min):80 uA
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