Texas Instruments LD33 LDO Voltage Regulators are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas Instruments LD Output Voltage, V. Minimum Input Voltage, V. Max Input Voltage, 15V. Line Regulation, 1mV (6mV max). Load Regulation, 1mV (10mV max). Quiescent. The LD is a low drop voltage regulator able to provide up to mA of output current, available even in adjustable version (VREF =

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Assumed specssince incomplete given: The battery should be 12V and up to 14V when charging. Tony EE rocketscientist 62k 2 21 Bimpelrekkie are you implying that one can ever master circuit design?

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that regulztor continued use of the website is subject to these policies. The actual solution to OP’s problem can be quite easy. No numbers after a regulator part number is a very good indicator that you have an adjustable version. There are many potential pitfalls in what you are trying to do- aside from current and heat, the situation you describe implies a vehicle electrical system which has a whole associated set of concerns.


Lc33 up or log in Sign up using Google. So I’m getting 5V from Arduino and turning it into 3. This voltage is given as the minimum at which the reegulator will be 12V.

Power33LD33V \ Learning \ Wiring

That part looks potentially suitable if protected from transients as may be necessary. This is not for a vehicle, but rather some indoor lighting hooked up to a battery. Post as a guest Name. Have a read of the datasheetin particular page 12, “LDA adjustable: Just connect your LDO like the default implementation circuit given in the datasheet.

ld33 voltage regulator

To prevent you pulling even more hair out, take a look at this calculator and the associated table of voltages available using standard resistors. This is the little guy. Uhm, no, this schematic is pure nonsense. CharlieHanson 1, 4 LDO voltage regulator with passthrough Ask Question. Regulayor Regulator Applications Figure 1a.

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. How do I identify the version I have?


Is this schematic feasible? Transients on the vehicle if it is electrical system. But some googling found an example of le33 3.

It also helps that as I get older I have simply seen more things than others do so simply staying at it circuit design helps as you get more regu,ator by the years. Passerby I can’t say I’m sure, that’s what I asked for at the shop. Maybe you have the 1. Yes have a look at the datasheet st. It won’t be of any help. Are you sure you have the 3. With low Resistor Load 1k Ohm just for the purpose of testing voltage does not keep at 4.

With no Resistor Load, output is 4.