SLCA003 February   2023 LM2901-Q1 , LM2901AV-Q1 , LM2901B-Q1 , LM2901V-Q1

 

  1. 1 LM2901-Q1, LM2901B-Q1, LM2901V-Q1, LM2901AV-Q1 Functional Safety FIT Rate, FMD and Pin FMA
    1. 1.1 Overview
    2. 1.2 Functional Safety Failure In Time (FIT) Rates
    3. 1.3 Failure Mode Distribution (FMD)
    4. 1.4 Pin Failure Mode Analysis (Pin FMA)

1.3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for LM2901-Q1, LM2901B-Q1, LM2901V-Q1, LM2901AV-Q1 in Table 1-3 comes from the combination of common failure modes listed in standards such as IEC 61508 and ISO 26262, the ratio of sub-circuit function size and complexity and from best engineering judgment.

The failure modes listed in this section reflect random failure events and do not include failures due to misuse or overstress.

Table 1-3 Die Failure Modes and Distribution
Die Failure Modes Failure Mode Distribution (%)
Out open (HIZ) 15%
Out saturate high 25%
Out saturate low 25%
Out functional not in specification 30%
Short circuit any two pins 5%