SBVA086A June   2020  – November 2024 TPS7B84-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 VSON Package
    2. 2.2 SOT223 Package
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 VSON Package
    2. 4.2 SOT223 Package
  7. 5Revision History

4.2 SOT223 Package

Figure 4-2 shows the TPS7B84-Q1 pin diagram for the SOT223 package. For a detailed description of the device pins refer to the Pin Configuration and Functions section in the TPS7B84-Q1 data sheet.

TPS7B84-Q1 Pin Diagram (SOT223 Package) Figure 4-2 Pin Diagram (SOT223 Package)
Table 4-6 Pin FMA for Device Pins Short-Circuited to Ground
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
IN 1 Power is not supplied to device. B
EN 2 The device is disabled, resulting is no output voltage. B
OUT 3 Regulation is not possible, the device operates at current limit. The device can cycle in and out of thermal shutdown. B
GND 4 No effect. Normal operation. D
Table 4-7 Pin FMA for Device Pins Open-Circuited
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
IN 1 Power is not supplied to the device B
EN 2 The device not turning on is possible. B
OUT 3 The device output is disconnected from the load. B
GND 4 There is no current loop for the supply voltage. The device does not regulate and is at risk of exceeding absolute maximum conditions. A
Table 4-8 Pin FMA for Device Pins Short-Circuited to Adjacent Pin
Pin Name Pin No. Shorted to (1) Description of Potential Failure Effects Failure Effect Class
IN 1 EN The device remains on. Regulation is possible. C
EN 2 OUT The device state is unknown. The device not turning on is possible. B
(1) In the event of a 10kΩ short between adjacent pins, there is no change in the potential failure effects or class.
Table 4-9 Pin FMA for Device Pins Short-Circuited to Supply
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
IN 1 No effect. Normal operation. D
EN 2 The device remains on. Regulation is possible. C
OUT 3 Regulation is not possible. VOUT = VIN. If VIN exceeds 20V, damage is possible. A
GND 4 Power is not supplied to the device. B