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

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Parametrics Compare all products in Shunt voltage references

 
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 TL431A-Q1 TL432A-Q1 TL432B-Q1 TLV431 TLV431A TLV431A-Q1 TLV431B TLV431B-Q1 TLVH431A TLVH431A-Q1 TLVH431B TLVH431B-Q1 TLVH432 TLVH432A TLVH432B
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable    
   
2.495     2.495    
   
1.24     1.24     1.24     1.24     1.24    
   
   
   
   
   
   
   
1.24     2.495     2.495     2.495     1.24     1.24     1.24     1.24     1.24     1.24     1.24     1.24     1.24     1.24     1.24     1.24    
18     36     36     36     6     6     6     6     6     18     18     18     18     18     18     18    
1.5     1     1     0.5     1.5     1     1     0.5     0.5     1     1     0.5     0.5     1.5     1     0.5    
138     92     92     92     138     138     161     138     161     138     161     138     161     138     138     138    
Catalog     Automotive     Automotive     Automotive     Catalog     Catalog     Automotive     Catalog     Automotive     Catalog     Automotive     Catalog     Automotive     Catalog     Catalog     Catalog    
-40 to 125
-40 to 85
0 to 70    
-40 to 125     -40 to 125     -40 to 125     -40 to 125
-40 to 85
0 to 70    
-40 to 125
-40 to 85
0 to 70    
-40 to 125     -40 to 125
-40 to 85
0 to 70    
-40 to 125     -40 to 125
-40 to 85
0 to 70    
-40 to 125     -40 to 125
-40 to 85
0 to 70    
-40 to 125     -40 to 125
-40 to 85
0 to 70    
-40 to 85
0 to 70
-40 to 125    
-40 to 125
0 to 70
-40 to 85    
60     400     400     400     55     55     55     55     55     60     60     60     60     60