Hello,
I'm considering using the TPS1HC100BQPWPRQ1 to power supply of LED driver.
The external load conditions are as follows.
- Nominal current : 250~350mA
- Inrush current : 5A, 50us
- The purpose of current sensor is to detect low current
→ 1st low current threshold : 230mA, 2nd low current threshold :45mA
Please check the below question.
Q1)
I/O voltage is 3.3V and ADC reference voltage is 5V.
If the input voltage of the DIAG_EN pin is 3.3V, Is the ADC full scale range available up to 3.3V ?
→ If so, Can I extend the full range of ADC to 5V by connecting a 5V pull-up to DIAG_EN pin ?
Q2)
Is it available if i set "Measurable current(by Rsns) < Icl(current limit threshold)" ?
Q3)
Can you provide a recommended circuit for maximizing the current accuracy of 40~300mA under upper load condition ?
My concern --> The current sensing range of 0~500mA is sufficient, but considering the 5A inrush current.
Q4)
Is the current sense accuracy the same as the datasheet below regardless of the Rsns value?
Thanks.