SNVAA08 October 2020 REF4132 , REF4132-Q1
This section provides a Failure Mode Analysis (FMA) for the pins of the REF4132-Q1. The failure modes covered in this document include the typical pin-by-pin failure scenarios:
Table 4-2 through Table 4-5 also indicate how these pin conditions can affect the device as per the failure effects classification in Table 4-1.
Class | Failure Effects |
---|---|
A | Potential device damage that affects functionality |
B | No device damage, but loss of functionality |
C | No device damage, but performance degradation |
D | No device damage, no impact to functionality or performance |
Figure 4-1 shows the REF4132-Q1 pin diagram. For a detailed description of the device pins please refer to the Pin Configuration and Functions section in the REF4132-Q1 data sheet.
Following are the assumptions of use and the device configuration assumed for the pin FMA in this section:
Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
---|---|---|---|
N/C | 1 | Could affect functionality of device. Pin is not internally connected to GND. | B |
GND | 2 | No Effect. | D |
EN | 3 | Disables device, no output voltage, high leakage. | B |
VIN | 4 | No output voltage, high leakage. | B |
VREF | 5 | No output voltage. | B |
Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
---|---|---|---|
N/C | 1 | No Effect. | D |
GND | 2 | No output voltage. | B |
EN | 3 | Disables device, no output voltage. | B |
VIN | 4 | Output is not regulated. | B |
VREF | 5 | Output is not regulated. | B |
Pin Name | Pin No. | Shorted to | Description of Potential Failure Effect(s) | Failure Effect Class |
---|---|---|---|---|
N/C | 1 | GND | Could affect functionality. Pin not internally connected to GND. | B |
GND | 2 | EN | Disables device, no output voltage, high leakage. | B |
EN | 3 | VIN | No Effect. | D |
VIN | 4 | VREF | Output is not regulated, high leakage. | B |
VREF | 5 | N/C | Could affect functionality. Pin not internally connected to GND. | B |
Pin Name | Pin No. | Description of Potential Failure Effect(s) | Failure Effect Class |
---|---|---|---|
N/C | 1 | Could affect functionality of device. Pin is not internally connected to GND. | B |
GND | 2 | No output voltage, high leakage. | B |
EN | 3 | No Effect. | D |
VIN | 4 | No Effect. | D |
VREF | 5 | Output is not regulated, high leakage. | B |