TLVH431A-Q1 Automotive catalog low-voltage adjustable precision shunt regulator | TI.com

TLVH431A-Q1
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Automotive catalog low-voltage adjustable precision shunt regulator

 

Description

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.

Features

  • Qualified for Automotive Applications
  • Low-Voltage Operation: Down to 1.24 V
  • Reference Voltage Tolerances at 25°C
    • 0.5% for B Grade
    • 1% for A Grade
  • Adjustable Output Voltage, VO = VREF to 18 V
  • Wide Operating Cathode Current Range: 100 µA to 70 mA
  • 0.25- Typical Output Impedance
  • –40°C to 125°C Specifications

Parametrics

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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)
TLVH431A-Q1 Order now Adjustable     1.24     1.24     18     1     161     Automotive     -40 to 125     60     80     SOT-23 | 5     0.5     0.5    
ATL431LI-Q1 Order now Adjustable     2.5     2.5     36     0.5
1    
66     Automotive     -40 to 125     80     15     SOT-23 | 3     0.4     0.3    
TL431-Q1 Order now Adjustable     2.495     2.495     36     0.5
1    
92     Automotive     -40 to 125     400     100     SOT-23 | 3
SOT-23 | 5    
4     2.5    
TL431LI-Q1 Order now Adjustable     2.495     2.495     36     0.5
1    
63     Automotive     -40 to 125     400     15     SOT-23 | 3     0.4     0.3    
TL432-Q1 Order now Adjustable     2.495     2.495     36     0.5
1    
92     Automotive     -40 to 125     400     100     SOT-23 | 3     4     2.5    
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-Q1 Order now Adjustable     1.24     1.24     6     0.5     161     Automotive     -40 to 125     55     15