SFFS669 august 2023 UCC14340-Q1 , UCC14341-Q1
4.1 DWN-36 Package
Figure 4-1 shows the UCC1434x-Q1 pin diagram for the DWN-36 package. For a detailed description of the device pins, see the Pin Configuration and Functions section in the UCC1434x-Q1 data sheet.
Figure 4-1 Pin Diagram (DWN-36) PackageTable 4-2 Pin FMA for Device Pins
Short-Circuited to Ground
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| GNDP | 1 | No effect. | D |
| GNDP | 2 | No effect. | D |
| PG | 3 | PG is always low. MCU can't detect the status of the bias supply. | C |
| ENA | 4 | Device is disabled. No output. | B |
| GNDP | 5 | No effect. | D |
| VIN | 6 | Device is not powered. No output. | B |
| VIN | 7 | Device is not powered. No output. | B |
| GNDP | 8 | No effect. | D |
| GNDP | 9 | No effect. | D |
| GNDP | 10 | No effect. | D |
| GNDP | 11 | No effect. | D |
| GNDP | 12 | No effect. | D |
| GNDP | 13 | No effect. | D |
| GNDP | 14 | No effect. | D |
| GNDP | 15 | No effect. | D |
| GNDP | 16 | No effect. | D |
| GNDP | 17 | No effect. | D |
| GNDP | 18 | No effect. | D |
| VEE | 19 | No effect. | D |
| VEE | 20 | No effect. | D |
| VEE | 21 | No effect. | D |
| VEE | 22 | No effect. | D |
| VEE | 23 | No effect. | D |
| VEE | 24 | No effect. | D |
| VEE | 25 | No effect. | D |
| VEE | 26 | No effect. | |
| VEE | 27 | No effect. | D |
| VDD | 28 | Device is disabled. No output. | B |
| VDD | 29 | Device is disabled. No output. | B |
| VEE | 30 | No effect. | D |
| VEE | 31 | No effect. | D |
| RLIM | 32 | Device is disabled. No output. | B |
| FBVEE | 33 | Device is disabled. No output. | B |
| FBVDD | 34 | Device is disabled. No output. | B |
| VEEA | 35 | No effect. | D |
| VEE | 36 | No effect. | D |
Table 4-3 Pin FMA for Device Pins
Open-Circuited
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| GNDP | 1 | No effect. | D |
| GNDP | 2 | No effect. | D |
| PG | 3 | MCU can't detect the status of the bias supply. | C |
| ENA | 4 | Undetermined state. The device could be on or off, depending on the noise on ENA pin. | B |
| GNDP | 5 | No effect. | D |
| VIN | 6 | Device is disabled. No output. | B |
| VIN | 7 | Device is disabled. No output. | B |
| GNDP | 8 | Voltage ringing will increase above normal increasing voltage stress at maximum VIN voltage. | C |
| GNDP | 9 | Voltage ringing will increase above normal increasing voltage stress at maximum VIN voltage. | C |
| GNDP | 10 | No effect. | D |
| GNDP | 11 | No effect. | D |
| GNDP | 12 | No effect. | D |
| GNDP | 13 | No effect. | D |
| GNDP | 14 | No effect. | D |
| GNDP | 15 | No effect. | D |
| GNDP | 16 | No effect. | D |
| GNDP | 17 | No effect. | D |
| GNDP | 18 | No effect. | D |
| VEE | 19 | No effect. | D |
| VEE | 20 | No effect. | D |
| VEE | 21 | No effect. | D |
| VEE | 22 | No effect. | D |
| VEE | 23 | No effect. | D |
| VEE | 24 | No effect. | D |
| VEE | 25 | No effect. | D |
| VEE | 26 | No effect. | D |
| VEE | 27 | No effect. | D |
| VDD | 28 | Voltage ringing will increase above normal increasing voltage stress at maximum VIN voltage. | C |
| VDD | 29 | Voltage ringing will increase above normal increasing voltage stress at maximum VIN voltage. | C |
| VEE | 30 | Voltage ringing will increase above normal increasing voltage stress at maximum VIN voltage. | C |
| VEE | 31 | Voltage ringing will increase above normal increasing voltage stress at maximum VIN voltage. | C |
| RLIM | 32 | Device is disabled. No output. | B |
| FBVEE | 33 | Device is disabled. No output. | B |
| FBVDD | 34 | Device is disabled. No output. | B |
| VEEA | 35 | No effect. | D |
| VEE | 36 | No effect. | D |
Table 4-4 Pin FMA for Device Pins
Short-Circuited to Adjacent Pin
| Pin Name | Pin No. | Shorted to | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|---|
| GNDP | 1 | GNDP | No effect. | D |
| GNDP | 2 | PG | Device is disabled. No output. | B |
| PG | 3 | ENA | Device can't stay on because once output voltage is generated, PG will disable the device | B |
| ENA | 4 | GNDP | Device is disabled. No output. | B |
| GNDP | 5 | VIN | Device is not powered. No output. | B |
| VIN | 6 | VIN | No effect. | D |
| VIN | 7 | GNDP | Device is not powered. No output. | B |
| GNDP | 8 | GNDP | No effect. | D |
| GNDP | 9 | GNDP | No effect. | D |
| GNDP | 10 | GNDP | No effect. | D |
| GNDP | 11 | GNDP | No effect. | D |
| GNDP | 12 | GNDP | No effect. | D |
| GNDP | 13 | GNDP | No effect. | D |
| GNDP | 14 | GNDP | No effect. | D |
| GNDP | 15 | GNDP | No effect. | D |
| GNDP | 16 | GNDP | No effect. | D |
| GNDP | 17 | GNDP | No effect. | D |
| GNDP | 18 | N/A | N/A | N/A |
| VEE | 19 | VEE | No effect. | D |
| VEE | 20 | VEE | No effect. | D |
| VEE | 21 | VEE | No effect. | D |
| VEE | 22 | VEE | No effect. | D |
| VEE | 23 | VEE | No effect. | D |
| VEE | 24 | VEE | No effect. | D |
| VEE | 25 | VEE | No effect. | D |
| VEE | 26 | VEE | No effect. | D |
| VEE | 27 | VDD | Device is disabled. No output. | B |
| VDD | 28 | VDD | No effect. | D |
| VDD | 29 | VEE | Device is disabled. No output. | B |
| VEE | 30 | VEE | No effect. | D |
| VEE | 31 | RLIM | Device is disabled. No output. | B |
| RLIM | 32 | FBVEE | RLIM will not regulate correctly. | B |
| FBVEE | 33 | FBVDD | VDD and RLIM can't regulate correctly. | B |
| FBVDD | 34 | VEEA | Device is disabled. No output. | B |
| VEEA | 35 | VEE | No effect. | D |
| VEE | 36 | N/A | N/A | N/A |
Table 4-5 Pin FMA for Device Pins
Short-Circuited to
supply
| Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
|---|---|---|---|
| GNDP | 1 | Device is not powered. No output. | B |
| GNDP | 2 | Device is not powered. No output. | B |
| PG | 3 | Exceed pin abs. max rating. Device damage is possible. | A |
| ENA | 4 | Device is always enabled. Pin voltage exceeds abs. max rating. Device damage is possible. | A |
| GNDP | 5 | Device is not powered. No output. | B |
| VIN | 6 | No effect. | D |
| VIN | 7 | No effect. | D |
| GNDP | 8 | Device is not powered. No output. | B |
| GNDP | 9 | Device is not powered. No output. | B |
| GNDP | 10 | Device is not powered. No output. | B |
| GNDP | 11 | Device is not powered. No output. | B |
| GNDP | 12 | Device is not powered. No output. | B |
| GNDP | 13 | Device is not powered. No output. | B |
| GNDP | 14 | Device is not powered. No output. | B |
| GNDP | 15 | Device is not powered. No output. | B |
| GNDP | 16 | Device is not powered. No output. | B |
| GNDP | 17 | Device is not powered. No output. | B |
| GNDP | 18 | Device is not powered. No output. | B |
| VEE | 19 | Device is disabled. No output. | B |
| VEE | 20 | Device is disabled. No output. | B |
| VEE | 21 | Device is disabled. No output. | B |
| VEE | 22 | Device is disabled. No output. | B |
| VEE | 23 | Device is disabled. No output. | B |
| VEE | 24 | Device is disabled. No output. | B |
| VEE | 25 | Device is disabled. No output. | B |
| VEE | 26 | Device is disabled. No output. | B |
| VEE | 27 | Device is disabled. No output. | B |
| VDD | 28 | No effect. | D |
| VDD | 29 | No effect. | D |
| VEE | 30 | Device is disabled. No output. | B |
| VEE | 31 | Device is disabled. No output. | B |
| RLIM | 32 | Device is disabled. No output. | B |
| FBVEE | 33 | Device is disabled. No output. | B |
| FBVDD | 34 | Device is disabled. No output. | B |
| VEEA | 35 | Device is disabled. No output. | B |
| VEE | 36 | Device is disabled. No output. | B |