JAJSNQ5 may 2023 TPS92629-Q1
PRODUCTION DATA
The TPS92629-Q1 device supports the DIAGEN pin with an accurate threshold to disable the LED open-circuit and output short-to-battery detection. The DIAGEN pin can be used to enable or disable LED open-circuit detection and output short-to-battery detection based on SUPPLY pin voltage sensed by an external resistor divider as illustrated in Figure 7-4. When the voltage applied on DIAGEN pin is higher than the threshold VIH(DIAGEN), the device enables LED open-circuit and output short-to-battery detection. When V(DIAGEN) is lower than the threshold VIL(DIAGEN), the device disables LED open-circuit and output short-to-battery detection.
Only LED open-circuit and output short-to-battery detection can be disabled by pulling down the DIAGEN pin. The LED short-to-GND detection and overtemperature protection cannot be turned off by pulling down the DIAGEN pin. The SUPPLY threshold voltage can be calculated by using Equation 2.
where