Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Trip Current TC is minimal current which will activate fuse, and holding current is current which fuse allowing to pass without burning out. Also there should be tripind duration time in ms.
Calculating the power dissipation of an LDO is very simple: You simply need to know Vin (voltage suppled TO the LDO), Vout (voltage suppled FROM the LDO), and Iout (current suppled by the LDO). The power dissipated will simply be (Vin - Vout) * Iout.
If you want a more precise calculation (this becomes useful for calculating the power loss during standby), you should take into account the LDO's quiescent current (the current it draws regardless of the output current; this is typically called Iq). Then the power dissipation becomes:
Pw = (Vin - Vout) * Iout + Vin * Iq.
Typically, Vin * Iq is a very small amount of power, so when you're drawing lots of current it becomes negligible compared with (Vin - Vout) * Iout. Under heavy loads, Vin * Iq can be ignored.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
