Hi Bob,
Please contact me on my email: febin.hameed@ti.com
Since we will now take the conversation internal, I will close this thread now. Please feel free to re-open, if you have any problems.
Regards,
Febin
Part Number: LM2776 I noticed a similar problem with startup on the LM2776. I have a nice hot-swap circuit on the input that ramps VIN from 0 to 5 V over 2.5 ms, and yes the part fails to start with all the recommended components from the datasheet and…
Part Number: LM2776 Hi,
I followed the typical application of the datasheet of LM2776 and made a chip for get the inverted voltage. However, firstly when I connect the +3.3 V input, the out put is -1 V. After that, when I re-connected the input with…
Part Number: LM2776 hi Team,
I am using LM2776 device to generate Negative 3.3V from +3.3V as Input supply. Both these voltages, +/- 3.3V, is applied as supply voltages of 3 OP-AMP and 1 Instrumentation Amplifier.
But I am getting Positive 0.5V…
Part Number: LM2776 Hello
I've got some issue with correct work of lm2776.
If I use 1uf capacitor that is connecting between C+ and C- the Vout is -4.6V (Vin is 4.9V).
But when I connect 2.2uf capacitors to Vin and to Vout - everything is going…
Part Number: LM2776 Hi Team,
Does the LM2776 have an issue with startup if both EN and VIN are high? I am seeing when both are high, the device limits output to .7V and seems like UVLO. When the power is turned off and input begins to drop the output…
Hello sir,
I have developed a circuit separate board and tested. At last, I have found what creates the problem. It is a flying capacitor and an output capacitor. Both have the values of 1 µF and 10 µF respectively as per webench design. What I did…
Part Number: LM2776 Other Parts Discussed in Thread: TPS60400 What is the accuracy of the voltage output of the LM2776? I know it is an inverter (voltage out = - voltage in). What is the minus output accuracy? If I have 5vdc+/- 1% on the input, can I…
Part Number: LM2776 Other Parts Discussed in Thread: , TPS60400 , Any alternative suggestion to LM2776? There is no stock available and we need the part by July.
Thanks,
Part Number: LM2776 Hello team,
Could you please help me to address issue on the output voltage?
The issue is exactly same as one discussed on E2E thread here . But unfortunately this was solved offline.
I'm trying to output -5V from 5V input but…
