Tool/software:
1. Does the input voltage of DIAG_EN being 3.3V or 5V affect the operation of FLT? (In the datasheet, only the condition of VDIA_EN=5V is mentioned)
2. According to our current circuit, the maximum input voltage for the load connected to FLT is 3.6V, so FLT needs to use 3.3V as the pull-up voltage. Is this design reasonable?
3. The specification document does not clarify the VOH/VOL characteristics of the output terminal (ILIM). Please provide relevant design information.
4. Regarding the design of GND, if we are not using as a primary power, relevant GND circuitry still required?
5. Below is the reference circuit diagram we designed; please help check if there are any issues.
6.What is the timing relationship between DIAG_EN and EN: during power-up, during fault, and during power-down?
Additional information:
1. Input voltage range: min 11.82V~typ 11.94V~max 12.06V;
2. Subsequent load: input voltage range: min 8.5V~typ 13.2V~max 16V; consumption current typ 0.5A~max 1A;
3. ILIM design values: min 1.2A~typ 1.7A~max 2.3A;
4. Required functions: OV, UV, ILIM (no need to monitor current value), FAULT feedback;
5. Input and output signal characteristics:
EN: VIH:min 2.72V~max 3.39V;VIL:min 0V~max 0.68V;
DIAG_EN: VIH:min 2.72V~max 3.39V;VIL:min 0V~max 0.68V;
FAULT(designed output value): VFLT_H type 3.3V,max 3.6V
Thank you for your help.
