SFFSA27 May 2025 TPS7A21-Q1
Figure 4-2 shows the TPS7A21-Q1 pin diagram for the WSON (DSG0008B) package. For a detailed description of the device pins, see the Pin Configuration and Functions section in the TPS7A21-Q1 data sheet.
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| OUT | 1 | Current limit is triggered, and the device can repeatedly enter and exit thermal shutdown depending on power dissipation. | B |
| OUT | 2 | Current limit is triggered, and the device can repeatedly enter and exit thermal shutdown depending on power dissipation. | B |
| NC | 3 | No effect. Normal operation. | D |
| GND | 4 | No effect. Normal operation. | D |
| EN | 5 | The device is disabled, resulting in no output voltage. | B |
| NC | 6 | No effect. Normal operation. | D |
| IN | 7 | Power is not supplied to the device. System performance depends on upstream current limiting. | B |
| IN | 8 | Power is not supplied to the device. System performance depends on upstream current limiting. | B |
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| OUT | 1 | Device parasitics are increased and transient performance is degraded. | C |
| OUT | 2 | Device parasitics are increased and transient performance is degraded. | C |
| NC | 3 | No effect. Normal operation. | D |
| GND | 4 | Device biasing has no current path. The device is not operational and does not regulate. | B |
| EN | 5 | The smart enable feature keeps the output turned off. | B |
| NC | 6 | No effect. Normal operation. | D |
| IN | 7 | Device parasitics are increased and transient performance is degraded. | C |
| IN | 8 | Device parasitics are increased and transient performance is degraded. | C |
| Pin Name | Pin No. | Shorted to | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|---|
| OUT | 1 | 2 - OUT | No effect. Normal operation. | D |
| OUT | 2 | 3 - NC | No effect. Normal operation. | D |
| NC | 3 | 4 - GND | No effect. Normal operation. | D |
| EN | 5 | 6 - NC | No effect. Normal operation. | D |
| NC | 6 | 7 - IN | No effect. Normal operation. | D |
| IN | 7 | 8 - IN | No effect. Normal operation. | D |
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| OUT | 1 | Regulation is not possible. | B |
| OUT | 2 | Regulation is not possible. | B |
| NC | 3 | No effect. Normal operation. | D |
| GND | 4 | No output voltage. System performance depends on the upstream current limiting. | B |
| EN | 5 | Device is always enabled. | B |
| NC | 6 | No effect. Normal operation. | D |
| IN | 7 | No effect. Normal operation. | D |
| IN | 8 | No effect. Normal operation. | D |