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REG71055-Q1 Temperature

Other Parts Discussed in Thread: REG71055-Q1

Hi, 

Customer is interested on the REG71055-Q1. I have seen that it is automotive qualified, but in the datasheet temperature range is only up to 85°C. Normally the case for automotive qualified parts is that Tambient is much higher.

Can you comment on this?

Regards,

Jon

  • Jon,

    It is common for TI to specify parts with the -Q1 suffix for a temperature range of -40 to +125 degrees C, but it is not a requirement.

    Each temperature rating has a "Grade" per the Q100 documentation:

    • Grade 0: -40°C to +150°C ambient operating temperature range
    • Grade 1: -40°C to +125°C ambient operating temperature range
    • Grade 2: -40°C to +105°C ambient operating temperature range
    • Grade 3: -40°C to +85°C ambient operating temperature range
    • Grade 4: 0°C to +70°C ambient operating temperature range

    We are more familiar with seeing -Q1 parts that are Q100 qualified for the Grade 1 classification, but the REG71055-Q1 is in the Grade 3 temperature range.