SLVAEL7A December 2019 – August 2024 TPS7B7701-Q1 , TPS7B7702-Q1
4.1 Single-Channel Package
Figure 4-1 Single-Channel, TPS7B7701-Q1
PWP Package, 16-Pin HTSSOP With PowerPAD™
Integrated Circuit Package (Top View)Table 4-2 Pin FMA for Device Pins
Short-Circuited to Ground
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| IN | 1 | No input to the device. The output is off. | B |
| EN | 2 | No input to the device. The output is off. | B |
| NC | 3 | No effect, normal operation | D |
| VCC | 4 | Device cannot turn on. | B |
| SENSE | 5 | No use of current sense functionality | B |
| NC | 6 | No effect, normal operation. | D |
| NC | 7 | No effect, normal operation. | D |
| SENSE_EN | 8 | Sense functionality enabled. | B |
| ERR | 9 | Device falsely reports error signal. | B |
| LIM | 10 | Current limit is set to default. | B |
| NC | 11 | No effect, normal operation. | D |
| GND | 12 | No effect, normal operation. | D |
| NC | 13 | No effect, normal operation. | D |
| NC | 14 | No effect, normal operation. | D |
| FB | 15 | Device acts as a switch. | B |
| OUT | 16 | Regulation is not possible; the device operates at current limit. The device can cylce in and out of thermal shutdown. | B |
Table 4-3 Pin FMA for Device Pins
Open-Circuited
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| IN | 1 | No input, the output is at ground. | B |
| EN | 2 | Device not enabled, the output is at ground. | B |
| NC | 3 | No effect, normal operation. | D |
| VCC | 4 | Device still operates, but internal regulator output VCC oscillates, and so output noise is increased, and noise on the SENSEx, ILIMx pins also increases | C |
| SENSE | 5 | No change in device function; no access to SENSE outputs. | B |
| NC | 6 | No effect, normal operation. | D |
| NC | 7 | No effect, normal operation. | D |
| SENSE_EN | 8 | SENSE_EN is always active (low) (there is an internal pulldown resistor) | B |
| ERR | 9 | No access to error signal. | B |
| LIM | 10 | When LIMx is open, OUTx does not turn on. | B |
| NC | 11 | No effect, normal operation. | D |
| GND | 12 | There is no current loop for internal biasing, so the device cannot function. | B |
| NC | 13 | No effect, normal operation. | D |
| NC | 14 | No effect, normal operation. | D |
| FB | 15 | The error amplifier input is not connected. The output voltage is indeterminate. | B |
| OUT | 16 | The load is not powered. | B |
Table 4-4 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 | EN (Pin 2) | Device is always powered. | D |
| EN | 2 | NC (Pin 3) | No effect. Normal operation. | D |
| NC | 3 | NC (Pin 4) | No effect. Normal operation. | D |
| VCC | 4 | Sense (Pin 5) | Internal circuitry has less headroom and performance degrades. | C |
| SENSE | 5 | NC (Pin 6) | No effect. Normal operation. | D |
| NC | 6 | NC (Pin 7) | No effect. Normal operation. | D |
| NC | 7 | Sense_EN (Pin 8) | No effect. Normal operation. | D |
| ERR | 9 | Lim (Pin 10) | If ERR is pulled high, no effect. If ERR is pulled low, current limit increases. | B |
| LIM | 10 | NC (Pin 11) | No effect. Normal operation. | D |
| NC | 11 | GND (Pin 12) | No effect. Normal operation. | D |
| GND | 12 | NC (Pin 13) | No effect. Normal operation. | D |
| NC | 13 | NC (Pin 14) | No effect. Normal operation. | D |
| NC | 14 | FB (Pin 15) | No effect. Normal operation. | D |
| FB | 15 | Out (Pin 16) | Output voltage is equal to the internal reference voltage. If OUT is forced to greater than 7V, FB can be damaged. | B/A |
Table 4-5 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 | Device is always enabled. | B |
| NC | 3 | No effect, normal operation. | D |
| VCC | 4 | IN is greater than 6V, VCC can be damaged. IN is less that 6V, Output can be out of regulation. SENSE outputs incorrect. | A/B |
| SENSE | 5 | If IN is greater than VCC + 0.3V, SENSE can be damaged. If IN is less than VCC + 0.3V, lose sense functionality. | A/B |
| NC | 6 | No effect, normal operation. | D |
| NC | 7 | No effect, normal operation. | D |
| SENSE_EN | 8 | If IN is greater than 7V, SENSE_EN can be damaged. If IN is less than 7V, sense functionality is always disabled. | A/B |
| ERR | 9 | If IN is greater than 7V, ERR can be damaged. If IN is less than 7V, loss of error functionality. | A/B |
| LIM | 10 | If IN is greater than 7V, LIM can be damaged. If IN is less than 7V, VOUTx does not come up | A/B |
| NC | 11 | No effect, normal operation. | D |
| GND | 12 | Supply is shorted to GND, no output voltage. | B |
| NC | 13 | No effect, normal operation. | D |
| NC | 14 | No effect, normal operation. | D |
| FB | 15 | If supply is greater than 7V, the maximum rating for FB is violated and can damage the device. If supply is less than 7V, the output is approximately 0V. | B |
| OUT | 16 | Regulation not possible. Vout = Vin. | B |