Hi Rajesh,
The line regulation is a DC characteristic, the Vout vs. Vin is generated by a very slow sweep of Vin. Your simulation is a transient response. Based on the timescale, the switching from 4.5V to 5.5V is fast.
Please check figure 46. from the…
Other Parts Discussed in Thread: TPS780 , TPS62740 , TPS706 , TPS62273 I was looking for a suitable dual level output LDO or even DC-DC converter (I kind of prefer LDO)
I found TPS780 series which was really what I was looking for but I'm using a Cortex-M3…
Other Parts Discussed in Thread: TPS780 Section 7.3.3 of the TPS780.pdf data sheet indicates that the TPS780 series includes an active pulldown to discharge Vout when the device is off. There is very little detail about the functionality of this feature…
Other Parts Discussed in Thread: TPS780 Hi,
Please let me know the operation of TPS78001 with prebiased condition and concern. I'm assuming the 2.5V prebias will be applied to Vout via 10kohm after power up. I understand that the output voltage can not…
Hi Shashank,
The efficiency of an LDO is dependent on the output power and input power, specifically, Vout*Iout/ [(Iout+Iq)*Vin]. The TPS731 operates with an Iq in the 100's of uA while the TPS780 operates in the 100's of nA.
For a 1.8V low Iq…
Hi Jan
I wonder the same.. did you find an answer already?
I came across this IC TPS780 which looks pretty good to power the CC2540 from a LiPo battery. Have you made any progress?
Regards
Daniel
Other Parts Discussed in Thread: TPS780 Hi,
I am using the MSP430-F5438A experimenter board and want to implement dynamic voltage (Vcc between 2.2V and 3.3V using TPS780) and frequency (between 1MHz and 25MHz) scaling. My application requires switching…
Any solution/update to this? I've been using the CC1110 for several years with no issues and just recently this exact problem has begun cropping up. I've tried everything I can think of and can't seem to figure out what is going on.
Thanks…
Hi Scot,
I have to admit that this is a pure technicality. I was just disturbed that in Table 6 under "Total System Power" one component of the power is missing. I didn't realize until now that adding it would actually make the TPS780 look better :).…