JAJSJ29D May 2020 – October 2021 TPS61378-Q1
PRODUCTION DATA
In addition to the cycle-by-cycle current limit function, the TPS61378-Q1 also has output short protection. If the output current causes the low-side FET to reach current limit and pull the output voltage below the input voltage, the device enters into short circuit protection mode, triggering the hiccup timer. When the hiccup timer is triggered, the device limits the current to a relative lower level for 1.8 ms and then shuts down. After 67 ms, it will restart. If the short condition disappears, the device will automatically restart.
When FB voltage is below ≤ 0.1 V during fault condition, the current limit threshold is reduced to 1/5 of the programmed current limit. Frequency is clamped to 1.1 MHz if the FREQ pin setting is greater than 1.1 MHz.