SFFS577A February   2024  – March 2026 LM74900-Q1 , LM74910-Q1 , LM74910H-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
  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 LM749x0-Q1 and LM74910H-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 (%)
DGATE stuck at low20
DGATE voltage or timing not in specification20
HGATE stuck at low25
HGATE voltage or timing not in specification25
OUT voltage or timing not in specification5
Pin-to-pin short5