TLVH431 1.5% low-voltage wide-operating current adjustable precision shunt regulator | TI.com

TLVH431 (ACTIVE) 1.5% low-voltage wide-operating current adjustable precision shunt regulator

 

Recommended alternative parts

  • TLV431  -  Vout (12V max) and Iz (80mA max), as well as different pinouts for SOT23-3 & SOT-89 packages, Vref=1.24, 2% trim accuracy.
  • TLVH432  -  Wider range for Vout (18V max) and Iz (80mA max), as well as different pinouts for SOT23-3 & SOT-89 packages.
  • ATL431  - The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.   Improved cathode current with 35uA minimum.

Different accuracy grades available

This device is available in 3 accuracy grades :

Description

The TLVH431 and TLVH432 devices are low-voltage 3-terminal adjustable voltage references, 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 18 V with two external resistors (see ). 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 and TLVH432 devices are ideal voltage references in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. They have a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TLVH431 and TLVH432 devices excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.

The TLVH432 device is identical to the TLVH431 device, but is offered with different pinouts for the 3-pin SOT-23 and SOT-89 packages.

Features

  • Low-Voltage Operation: Down to 1.24 V
  • Reference Voltage Tolerances at 25°C
    • 0.5% for B Grade
    • 1% for A Grade
    • 1.5% for Standard Grade
  • Adjustable Output Voltage, VO = VREF to 18 V
  • Wide Operating Cathode Current Range: 100 µA to 70 mA
  • 0.25-Ω Typical Output Impedance
  • –40°C to +125°C Specifications
  • TLVH432 Provides Alternative Pinouts for SOT-23-3 and SOT-89 Packages
  • Ultra-Small SC-70 Package Offers 40% Smaller Footprint than SOT-23-3

Parametrics

Compare all products in Shunt voltage references Email Download to Excel
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)
TLVH431 Order now 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    
TLV431 Order now 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 Order now 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    
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 Order now 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 Order now 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    
TLVH431A Order now Adjustable     1.24     1.24     18     1     138