TL431A-Q1 Automotive adjustable precision shunt regulator | TI.com

TL431A-Q1 (ACTIVE) Automotive adjustable precision shunt regulator

 

Description

The TL431-Q1 is a three-pin adjustable shunt regulator with specified thermal stability over applicable automotive temperature ranges. The output voltage can be set to any value from VREF (approximately 2.5 V) to 36 V, with two external resistors (see ). This device has a typical output impedance of 0.2 Ω. Active output circuitry provides a sharp turnon characteristic, making this device an excellent replacement for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Test Guidance With the Following:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
  • Reference Voltage Tolerance at 25°C:
    • 1% (A Grade)
    • 0.5% (B Grade)
  • Typical Temperature Drift:
    • 14 mV (Q Temp)
  • Low Output Noise
  • 0.2-Ω Typical Output Impedance
  • Sink-Current Capability: 1 mA to 100 mA
  • Adjustable Output Voltage: VREF to 36 V

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)
TL431A-Q1 Order now Adjustable     2.495     2.495     36     1     92     Automotive     -40 to 125     400     100     SOT-23 | 3
SOT-23 | 5    
4     2.5    
TL432A-Q1 Samples not available Adjustable     2.495     2.495     36     1     92     Automotive     -40 to 125     400     100     SOT-23 | 3     4     2.5    
TL432B-Q1 Order now Adjustable     2.495     2.495     36     0.5     92     Automotive     -40 to 125     400     100     SOT-23 | 3     4     2.5    
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    
TLVH431A Order now Adjustable     1.24     1.24     18     1     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    
TLVH431B Order now Adjustable     1.24     1.24     18     0.5     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    
TLVH432 Order now Adjustable     1.24     1.24     18     1.5     138     Catalog     -40 to 125
-40 to 85
0 to 70    
60     80     SOT-23 | 3
SOT-89 | 3