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[FAQ] TL431: TL431 vs TL432

Ajay Padgaonkar
Intellectual 1695 points
Part Number: TL431
Other Parts Discussed in Thread: TL432, , , ATL432, TL432LI, , , ATL432LI

What is the difference between TL431 and ATL431? What is the difference between TL431 and TL432?

  • +1
    TI__Mastermind 39765 points

    TL431 and TL432:

    1. Output Voltage = 2.495V to 36V
    2. Sink-Current Capability: 1 mA to 100 mA
    3. Reference Voltage Tolerance @ 25°C:  0.5% (B Grade), 1% (A Grade), 2% (Standard Grade)
    4. Operating Temperature (TA):  C grade: 0°C to 70°C, I grade: -40°C to 85°C, Q grade: -40°C to 125°C
    5. Maximum Temperature Drift (SOT23-3 package): 16 mV (0°C to +70°C) = C Version,  34 mV (-40°C to 85°C) = I Version,  34 mV (-40°C to 125°C) = Q Version
    6. |zKA| Dynamic impedance = 0.2 Ω (typ)
    8. Pins 1 and 2 for TL432 are reversed from TL431 

    ATL431 and ATL432:

    1. Output Voltage = 2.5V to 36V
    2. IKA Sink-Current Capability: 35 uA to 100 mA
    3. Reference Voltage Tolerance @ 25°C:  0.5% (B Grade), 1% (A Grade)
    4. Operating Temperature (TA):  I grade: -40°C to 85°C, Q grade: -40°C to 125°C
    5. Maximum Temperature Drift: 15 mV (–40°C to +85°C) = I Version,   34 mV (–40°C to +125°C) = Q Version
    6. |zKA| Dynamic impedance = 0.05 Ω (typ)
    7. IREF Reference input current = 30 nA (typ)
    9. Pins 1 and 2 for ATL432 are reversed from ATL431 

    TL431LI and TL432LI:

    1. Output Voltage = 2.495V to 36V
    2. IKA Sink-Current Capability: 1 mA to 15 mA
    3. Reference Voltage Tolerance @ 25°C:  0.5% (B Grade), 1% (A Grade), 2% (Standard Grade)
    4. Operating Temperature (TA):  C grade: 0°C to 70°C, I grade: -40°C to 85°C, Q grade: -40°C to 125°C
    5. Maximum Temperature Drift: 11 mV (0°C to +70°C) = C Version,  17 mV (-40°C to 85°C) = I Version, 27 mV (-40°C to 125°C) = Q Version
    6. |zKA| Dynamic impedance = 0.3 Ω (typ)
    7. IREF Reference Input Current = 200 nA (typ)
    9. Pins 1 and 2 for TL432LI are reversed from TL431LI

    ATL431LI and ATL432LI:

    1. Output Voltage = 2.5V to 36V
    2. IKA Sink-Current Capability: 80 uA to 15 mA
    3. Reference Voltage Tolerance @ 25°C:  0.5% (B Grade), 1% (A Grade)
    4. Operating Temperature (TA):  I grade: -40°C to 85°C, Q grade: -40°C to 125°C
    5. Maximum Temperature Drift: 17 mV (–40°C to +85°C) = I Version,   27 mV (–40°C to +125°C) = Q Version
    6. |zKA| Dynamic impedance = 0.3 Ω (typ)
    7. IREF Reference input current = 100 nA (typ)
    9. Pins 1 and 2 for ATL432LI are reversed from ATL431LI