SFFS592 August   2024 LM2936Q-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 SOIC Package
    2. 2.2 TO-252 Package
    3. 2.3 VSSOP Package
    4. 2.4 SOT-223 Package
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 SOIC Package
    2. 4.2 TO-252 Package
    3. 4.3 VSSOP Package
    4. 4.4 SOT-223 Package

4.3 VSSOP Package

Figure 4-3 shows the LM2936Q-Q1 pin diagram for the VSSOP package. For a detailed description of the device pins, see the Pin Configuration and Functions section in the LM2936Q-Q1 data sheet.

LM2936Q-Q1 Pin Diagram (VSSOP Package) Figure 4-3 Pin Diagram (VSSOP Package)
Table 4-10 Pin FMA for Device Pins Short-Circuited to Ground
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
OUT 1 Device cycles in and out of thermal shutdown depending upon input voltage. Short circuit current limit triggers to clamp output current. B
NC 2 No effect. Normal operation. D
NC 3 No effect. Normal operation. D
NC 4 No effect. Normal operation. D
NC 5 No effect. Normal operation. D
NC 6 No effect. Normal operation. D
GND 7 No effect. Normal operation. D
IN 8 Device not powered. Device not functional. Absolute maximum voltages can potentially permanently damage the device. A
Table 4-11 Pin FMA for Device Pins Open-Circuited
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
OUT 1 Power not driven to load. Device is unloaded. D
NC 2 No effect. Normal operation. D
NC 3 No effect. Normal operation. D
NC 4 No effect. Normal operation. D
NC 5 No effect. Normal operation. D
NC 6 No effect. Normal operation. D
GND 7 A floating GND pin results in incorrect voltage regulation or no output voltage. Fast transients have the potential to exceed absolute maximum voltages. A
IN 8 Device not powered. Device not functional. B
Table 4-12 Pin FMA for Device Pins Short-Circuited to Adjacent Pin
Pin Name Pin No. Shorted to Description of Potential Failure Effects Failure Effect Class
OUT 1 NC No effect. Normal operation. D
NC 2 NC No effect. Normal operation. D
NC 3 NC No effect. Normal operation. D
NC 5 NC No effect. Normal operation. D
NC 6 GND No effect. Normal operation. D
GND 7 IN Device not powered. Device not functional. Absolute maximum voltages can potentially permanently damage the device. A
Table 4-13 Pin FMA for Device Pins Short-Circuited to IN
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
OUT 1 Device shuts off as OUT is now higher than setpoint. Output is no longer regulated. B
NC 2 No effect. Normal operation. D
NC 3 No effect. Normal operation. D
NC 4 No effect. Normal operation. D
NC 5 No effect. Normal operation. D
NC 6 No effect. Normal operation. D
GND 7 Device not powered. Device not functional. Absolute maximum voltages can potentially permanently damage the device. A
IN 8 No effect. Normal operation. D