Part Number: TPS748A-Q1 Tool/software: I've read the other posts but am still confused about the drop out and the bias conditions. I would like to use the part since it has the soft-start feature to regulate from 5V to 3.3V using the part with IN…
Part Number: TPS748A-Q1 Tool/software: Hi TI Expert,
Few questions about the TPS748A-Q1 would like to check with you:
1. About the ISHDN, why we have 0.8V VOUT when VEN is lower than 0.4V, that's the leakage from VIN or we just add extra power source…
Part Number: TPS748A-Q1 Hello
Do we have any LDO which could tolerate the 140 degree environment temperature and the 175 junction temperature.
If not any recommendation in high temperature tolerance LDO device.
Thanks
Yuhao
Part Number: TPS748A-Q1 Other Parts Discussed in Thread: TPS79633-Q1 , , TPS748A We want to know the dropout voltage under the case of Vin=3.8V, Vbias = 5V, and Vout=3.3V.
Need to compare the characteristics between TPS79633-Q1 and TPS748A-Q1 to judge the…
Part Number: TPS748A-Q1 Other Parts Discussed in Thread: TPS748A , , TPS74801
Hello,
Normally，LDO output Vout = Vfb*（R1+R2）/R2，there is no description in the datasheet, dose tps748a Vout be set by Vfb, R1, R2?
And, is there any output fixed version, i…
Part Number: TPS748A Other Parts Discussed in Thread: TPS74801EVM-177 , Tool/software: The TPS748A datasheet on the first page notes:
Stable with any output capacitor >= 10 uF
which is also reflected in table "6.3 Recommended Operating Conditions"…
Thanks for the response. Kindly clarify the following doubts
1. In which scenario "VBIAS must be 1.9 V above VOUT" as mentioned in section 8.1.2. ? (Resolved in https://e2e.ti.com/support/power-management-group/power-management/f/power-management…
Hi Srijesh,
It looks like for the 3.8V output, TL1963A-Q1 might be an option. Its quiescent current with a 0mA load is 1.5mA max, though, which is higher than your requested 500µA max.
For the 3.3V supply, I'd suggest TPS74801-Q1 or TPS748A-Q1 as…
Hello Kei,
The Bias and quiescent may be referred to the same current in a bipolar LDO, but in modern LDOs they are different.
In modern LDO's, the bias current is inherent of NMOS LDOs as they do require a higher voltage bias rail to power their internal…
