What is FLAG output?

The FLAG output is a function that notifies when the eFuse IC detects a specific fault.

Explanation of the TCKE9 Series Example.
Figure 1 shows the equivalent circuit of the FLAG terminal of the TCKE9 series. Since the FLAG terminal is an open-drain structure, it must be pulled up using an external resistor to an external supply.
When selecting the pull-up resistor, please fully consider the sink current (maximum rating) of the FLAG terminal and evaluate it sufficiently in the actual device. (As a reference, the pull-up resistor value is 10 kΩ.)
Table 1 shows the functions and timings of the FLAG output of the TCKE9 series. For details, please refer to the individual data sheets.

Equivalent circuit of the FLAG pin (TCKE9 series)
Figure 1: Equivalent circuit of the FLAG pin (TCKE9 series)
Table 1: Target functions and operation timing of FLAG outputting（TCKE9 series）
Abnormal mode FLAG power Timing of FLAG Outputting Operation IC operation
Superheating Yes Tj ≥ TSD 155 °C (Typ.) Shutdown
Overvoltage - - VOUT voltage-clamp
Low voltage - - Shutdown
Overcurrent - - IOUT Current Limit
Short-circuit - - Shutdown
ILIM pin open - - Shutdown
ILIM pin short-circuited Yes IOUT > 2 A (Typ.) IOUT > 2A (Typ.) shutdown

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Please refer to the following pages and documents for product lineup and other documents.

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