0
ACTIVE
Rating |
Automotive |
VO (V) |
1.24 |
Initial accuracy (max) (%) |
1 |
Iz for regulation (min) (µA) |
60 |
VO adj (min) (V) |
1.24 |
VO adj (max) (V) |
18 |
Reference voltage (V) |
adjustable |
Temp coeff (max) (ppm/°C) |
161 |
Operating temperature range (°C) |
-40 to 125 |
Iout/Iz (max) (mA) |
80 |
SOT-23 (DBV)-5-8.12 mm² 2.9 x 2.8
Typical Output Impedance
The TLVH431 devices are low-voltage 3-terminal adjustable voltage references, with thermal stability specified over the automotive temperature range. Output voltage can be set to any value between VREF (1.24 V) and 18 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 TLVH431 devices are ideal voltage reference in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. They have a typical output impedance of 0.25 . Active output circuitry provides a very sharp turn-on characteristic, making the TLVH431 an excellent replacement for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
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