Other Parts Discussed in Thread: TPS7B69,
Hi Expert,
Customer refer LM317L-N SCP circuit and implemented at TPS7B69 trying to limit with 15mA
They tried with R=120kohm and get trip point is about 70mA. Then try and error R=1.2Mohm and get trip point about 7.7mA
Would you please let us know how to calculate for the resistor vs the current limit value? Thanks.
LDO: TPS7B6933QDBVRQ1
PNP BJT:DIODES MMBTA56-7-F
R: 120Kohm --> 70mA; 1.2Mohm --> 7.7mA
Vin: 24V
Vout: 3.3V
Regards,
Allan