Other Parts Discussed in Thread: TL7759, TPS3825
Dear Sir:
Regarding the TPS3825-33QDBVRQ1 RESET IC IOH & IOL issue
1. How many uA of IOL(min)?
2. How many uA of IOL(min)?
Please check to reply it asap.
Thanks
B.R
Vincent
EX:
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Dear Sir:
Regarding the TPS3825-33QDBVRQ1 RESET IC IOH & IOL issue
1. How many uA of IOL(min)?
2. How many uA of IOL(min)?
Please check to reply it asap.
Thanks
B.R
Vincent
EX:
Hi Vincent,
Which datasheet you are looking for? TPS3825-Q1 or TL7759?
Regards,
Sila Atalar
Hi Vincent, I checked with my team and TPS3825 does not require min current for operation. Feel free to use larger resistor for your application if needed.
Best Regards,
Sila Atalar
Dear Sir:
According to the circuit design requirement.
The device side needs the pull-down resistor and connect to RESET pin.
We need the RESET pin IOL(min) leakage current to calculate the maxium Pull down resistor.
Please check to provide it asap.
Thanks a lot.
B.R
Vincent
Hi Vincent,
TPS3825-Q1 has push-pull output, therefore there is no need pull-up or pull-down resistor. As mentioned, TPS3825 does not require min current for operation.
Best Regards,
Sila Atalar
Dear Sir:
1.The device side is NMOS. NMOS has a pull down resistor to keep the low level to avoid the floating when the TPS3825 power off.
2.TPS3825-Q1 doesn’t have IOL leakage current?
Is IOL leakage current around 1uA?
Please check to reply it asap.
Thanks a lot.
B.R
Vincent
Hi Vincent,
For leakage current I need to check with the design team. I'll get back to you with a feedback by Wednesday.
Best,
Sila Atalar
Hi Vincent,
I checked with our design team, and I learned that RESET and RESET_ pins can directly drive a CMOS/TTL input of the downstream device (MCU, etc), and specify the MAX IOL, IOH to ensure the VOL, VOH.
So to be clear:
- If the RESET, RESET_ pin has a resistor to ground, and there is no power/VDD to TPS3825, then there will be No leakage on RESET, RESET_
- If VDD to TPS3825 is powered then, If you do have a load the RESET and RESET_ pins with a resistor, you should not violate the IOL, IOH spec (which will guarantee VOL, VOH).
And also I think it could be good if you could share some schematic and more information on " the device side" needs you mentioned earlier, so everything would be more clear for both of us.
Best Regards,
Sila Atalar