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 (1.24 V) and 6 V with two external resistors (see the Parameter Measurement Information section). 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 device 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 turnon characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
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Part number | Order | Reference voltage | VO (V) | VO adj (Min) (V) | VO adj (Max) (V) | Initial accuracy (Max) (%) | Temp coeff (Max) (ppm/ degree C) | Rating | Operating temperature range (C) | Iz for regulation (Min) (uA) | Iout/Iz (Max) (mA) | Package Group | Iref (uA) | I I(dev) (uA) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TLV431A |
|
Adjustable | 1.24 | 1.24 | 6 | 1 | 138 | Catalog |
-40 to 125
-40 to 85 0 to 70 |
55 | 15 |
SOIC | 8
SOT-23 | 3 SOT-23 | 5 SOT-89 | 3 TO-92 | 3 |
0.5 | 0.5 |
TLV431 |
|
Adjustable | 1.24 | 1.24 | 6 | 1.5 | 138 | Catalog |
-40 to 125
-40 to 85 0 to 70 |
55 | 15 |
SOT-23 | 3
SOT-23 | 5 SOT-89 | 3 TO-92 | 3 |
0.5 | 0.5 |
TLV431A-Q1 | Samples not available | Adjustable | 1.24 | 1.24 | 6 | 1 | 161 | Automotive | -40 to 125 | 55 | 15 | SOT-23 | 5 | 0.5 | 0.5 |
TLV431B |
|
Adjustable | 1.24 | 1.24 | 6 | 0.5 | 138 | Catalog |
-40 to 125
-40 to 85 0 to 70 |
55 | 15 |
SC70 | 6
SOT-23 | 3 SOT-23 | 5 SOT-89 | 3 TO-92 | 3 |
0.5 | 0.5 |
TLV431B-Q1 |
|
Adjustable | 1.24 | 1.24 | 6 | 0.5 | 161 | Automotive | -40 to 125 | 55 | 15 |
SOT-23 | 3
SOT-23 | 5 |
0.5 | 0.5 |
TLVH431 |
|
Adjustable | 1.24 | 1.24 | 18 | 1.5 | 138 | Catalog |
-40 to 125
-40 to 85 0 to 70 |
60 | 80 |
SC70 | 6
SOT-23 | 3 SOT-23 | 5 SOT-89 | 3 TO-92 | 3 |
0.5 | 0.5 |
TLVH431A |
|
Adjustable | 1.24 | 1.24 | 18 | 1 | 138 | Catalog |
-40 to 125
-40 to 85 0 to 70 |
60 | 80 |
SC70 | 6
|