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

4.4 SOT-223 Package

Figure 4-4 shows the LM2936Q-Q1 pin diagram for the SOT-223 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 (SOT-223 Package) Figure 4-4 Pin Diagram (SOT-223 Package)
Table 4-14 Pin FMA for Device Pins Short-Circuited to Ground
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
IN 1 Device not powered. Device not functional. Absolute maximum voltages can potentially permanently damage the device. A
GND 2 No effect. Normal operation. D
OUT 3 Device cycles in and out of thermal shutdown depending upon input voltage. Short circuit current limit triggers to clamp output current. B
GND (TAB) 4 No effect. Normal operation. D
Table 4-15 Pin FMA for Device Pins Open-Circuited
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
IN 1 Device not powered. Device not functional. B
GND 2 No low impedance loop for current to flow, device is inoperable and absolute maximum condition violations are possible. A, B
OUT 3 Power not driven to load. Device is unloaded. D
GND (TAB) 4 Thermal performance degradation. Device functions but thermals are heavily impacted. C
Table 4-16 Pin FMA for Device Pins Short-Circuited to Adjacent Pin
Pin Name Pin No. Shorted to Description of Potential Failure Effects Failure Effect Class
IN 1 GND Device not powered. Device not functional. Absolute maximum voltages can potentially permanently damage the device. A
GND 2 OUT Device cycles in and out of thermal shutdown depending upon input voltage. Short circuit current limit triggers to clamp output current. B
Table 4-17 Pin FMA for Device Pins Short-Circuited to IN
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
IN 1 No effect. Normal operation. D
GND 2 Device not powered. Device not functional. Absolute maximum voltages can potentially permanently damage the device. A
OUT 3 Device shuts off as OUT is now higher than setpoint. Output is no longer regulated. B
GND (TAB) 4 Device not powered. Device not functional. Absolute maximum voltages can potentially permanently damage the device. A