SNOAA48A December   2019  – November 2024 LM4040-N-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 Functional Safety Failure In Time (FIT) Rates for Voltage Options ≤ 5V
    2. 2.2 Functional Safety Failure In Time (FIT) Rates for 8.192V Voltage Option
    3. 2.3 Functional Safety Failure In Time (FIT) Rates for 10V Voltage Option
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
  7. 5Revision History

3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for the LM4040-N-Q1 in Table 3-1 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 resulting from misuse or overstress.

Table 3-1 Die Failure Modes and Distribution
Die Failure ModesFailure Mode Distribution (%)
VR voltage accuracy outside of the specifications 40
VR does not meet dynamic impedance specification 20
Minimum regulation current exceeds maximum value of the specification 40