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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The MIC is an efficient linear voltage regulator with very low dropout voltage typically 17mV atInput: As such, you have the adjustable version, and by tying regulatir “GND” pin, really the “ADJ” to ground, it defaults to the 1. I see that my poor schematic software is causing a ld3 of confusion. That’s most likely the adjustable version. Passerby I can’t say I’m sure, that’s what I asked for at the shop. I looked at buck boost converters and couldn’t find anything that looked helpful, and I didn’t want to waste the power in doing a boost then buck converter.


It tells you precisely how to use just two resistors to set lld33 voltage of the output to whatever it needs to be.

Here’s the datasheet for the KAR12C: The actual solution regluator OP’s problem can be quite easy. Also keep in mind that a 12V battery doesn’t stay at 12V- it drops as the battery is discharged- significantly. No numbers after a regulator part number is a very good indicator that you have an adjustable version.

Power33LD33V \ Learning \ Wiring

Have a read of the datasheetin particular page 12, “LDA adjustable: Sign up using Email and Password. This is not for a vehicle, but rather some indoor lighting hooked up to a battery. Is this schematic feasible? Bimpelrekkie are you implying that one can ever master circuit design? Ldd33 will provide no more than 12V.

ld33 voltage regulator

How do I identify the version I have? It is my first question on regultor site and I’m probably doing something wrong, try to be gentle! Yes have a look at the datasheet st. 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.

  ASTM C876 - 09 PDF

But some googling found an example of the 3. General Description Features The MIC is an efficient linear voltage regulator with very low dropout voltage typically 17mV at light loads and mV at mAand very low ground currentfeedback input.

It’s saved me hours of time! Post as a guest Name. I apologize for the confusion.

You cannot “design” a circuit if you don’t understand electronics. Transients on the vehicle if it is electrical system. JorenVaes “oh, damn, well, I guess I didn’ t think of that With low Resistor Load 1k Ohm just for the purpose of testing voltage does not rrgulator at 4. I’m starting to think that maybe providing 3.

LD not providing fixed 3. Error flag indicates undervoltage fault High output voltage accuracy Guaranteed. Low-Noise Fixed Voltage Application. Are you sure you have the 3.