SLVA745A December   2015  – April 2025 TPS7B4253-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 DDA 8-pin SO PowerPAD Package
    2. 2.2 PWP 20-pin HTSSOP (with exposed thermal pad) Package
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Modes and Effects Analysis (Pin FMEA)
    1. 4.1 DDA 8-pin SO PowerPAD Package
    2. 4.2 PWP 20-pin HTSSOP (with exposed thermal pad) Package
  7. 5Revision History

3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for the TPS7B4253-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 Modes Failure Mode Distribution (%)
No output (output low) 45
Output high (following input) 45
Short any two adjacent pins 5
Output not in specification 5