description. This series of fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications. These applications include on-card. 78L12 Positive-voltage Regulators. 3-Terminal Regulators Output Current mA No External Components Internal Thermal-Overload Protection Internal. TO CJ78L CJ78LTA. MARKING. Solid dot Green molding compound device,. XXX Code. CJ78L12 Device code if none,the normal device. CJ. 78L

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Please check with local NEC ,: In addition, they can be used with power-pass.

78L12 Datasheet

From the above it may look like you best make your input voltage a lot higher than the 12V output, but that’s not true. The maximum dropout voltage Vd is 2.

Wing Shing Computer Components Co. Please check with an NEC Electronics sales representative fordesign-in, refer to the latest publications of NEC Electronics data sheets or data books, etc. If you have an input voltage of 20V the same 1A will be drawn from that 20V.

The internal limiting and thermal-shutdown features of these regulators make them essentially immune to overload. The is not a LDO low-dropout regulatoras the typical dropout voltage is around 2 volts.


Please check with an NEC Electronics sales representative for availability andchange without notice. This is a snapshot of page On the secondary side of transformer are connected two fuses mA and after them is bridge rectifier.

All parameters are specified under datsheet conditions, and for the output voltage we can see that the condition is that the input voltage is minimum There are LDOs Low Drop-Out which still can regulate the output if the input is only a few hundreds of mV higher and there are even ultra low drop-out types which only need a few tens of mV.

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I couldn’t find smaller than 50mA. This series of fixed-voltage integrated-circuit.

Circuit has on the primary side only fuse. Next are small filter capacitors and also signaling LEDs connected via resistors. Next are positive 78l122 negative voltage regulators 78L12 and 79L12 with decoupling capacitors C3 to C6 close to regulators. How much higher depends on the type of regulator. LITPD pv battery charger. D Output Current up to mA.

Peter Mortensen 1, 3 14 Arrow Electronics Mouser Electronics. The datasheet does say how much it datsheet, but you may have to look for it.

(PDF) 78L12 Datasheet download

D Internal Thermal-Overload Protection. But since there’s this voltage drop the input voltage has to be higher than the output voltage. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The current to your load flows through the regulator and is the same current as will be drawn from the input voltage.


These applications include on-card. PDF format Eagle6 format. Next we continue with connectors, transformer and big capacitors. On page 6 of the datasheet, the maximum dropout datashert Vd is listed as 2.

No abstract text available Text: Schematics diagram schematics in Eagle 6 format Assembling First we check if all holes are correctly drilled.

minimum input voltage? – Electrical Engineering Stack Exchange

Please check with an NEC Electronics sales representative forwithout notice. Thermal effects must be taken into account separately. I’ve seen LDOs with a dropout voltage of 50 mV. The updated every day, always provide the best quality and speed. Supply works without troubles on the first power-on. If so, what is the current like that it outputs?

I tried to design them symmetrically.