LM2733: may i use LM2733 to implement a power of negative -11v input,positive output +5v?

Elena Gonzalez

Prodigy 50 points

Part Number: LM2733

I try to design that converter from -11V to 5V

With that circuit. Can you help me ?

over 7 years ago

0 Elena Gonzalez over 7 years ago

Prodigy 50 points

Hello, my circuit is working now!

thanks

0 Youhao Xi over 7 years ago in reply to Elena Gonzalez

TI__Guru* 76785 points

Hi Elena,
Glad to hear . Your UVLO by means of D2 may not work well because the VIN capacitor can hold the voltage and the IC would not know if the input voltage has a sudden drop. You may consider to use a resistor divider across the input rail to set your UVLO threshold.
Thanks,
Youhao Xi

Power management

Power management forum

LM2733: may i use LM2733 to implement a power of negative -11v input,positive output +5v?