ZHCSQ77B February 2023 – June 2024 TPS25948
PRODUCTION DATA
The TPS25948xx monitors the internal die temperature (TJ) at all times and shuts down the part as soon as the temperature exceeds a safe operating level (TSD) thereby protecting the device from damage. The device will not turn back on until the junction cools down sufficiently, that is the die temperature falls below (TSD – TSDHYS).
When the TPS25948xL (latch-off variant) detects thermal overload, it will be shut down and remain latched-off until the device is power cycled or re-enabled. When the TPS25948xA (auto-retry variant) detects thermal overload, it will remain off until it has cooled down by TSDHYS. Thereafter, it will remain off for an additional delay of tRST after which it will automatically retry to turn on if it is still enabled.
| Device | Enter TSD | Exit TSD |
|---|---|---|
| TPS25948xL (Latch-Off) | TJ ≥ TSD | TJ < TSD – TSDHYS
VIN cycled to 0 V and then above VUVP(R) OR EN/UVLO toggled below VSD(F) |
| TPS25948xA (Auto-Retry) | TJ ≥ TSD | TJ < TSD –
TSDHYS VIN cycled to 0 V and then above VUVP(R) OR EN/UVLO toggled below VSD(F) OR tRST timer expired |