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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Given a potential part number, the above paragraph can be illustrated with a figure from the datasheet:.
Tony EE rocketscientist 62k 2 21 Have a read of the datasheetin particular page 12, “LDA adjustable: LD not providing fixed 3. With no Resistor Load, output is 4. What potential pitfalls are you seeing?
It will provide no more than 12V. So I’m getting 5V from Arduino and turning it into 3. Fixed Regulator Applications Figure 1a.
CharlieHanson 1, 4 Use a LD calculator if you want to use regulatod value resistors. All I’ ve ever found is that whenever you think you know what you are doing someone points out a problem that makes you go “oh, damn, well, I guess I didn’ t think of that Can someone guess what I am doing wrong with this LD?
Assumed specssince incomplete given: See if you understand figure 21, it rfgulator tells you what I said in the 2nd paragraph above. The problem is I can’t get it to provide 3.
Regulator Outputbetter performance. Spehro Pefhany k 4 Also keep in mind that a 12V battery doesn’t stay at 12V- it drops as the battery is discharged- significantly. Maybe you have the 1.
Sign up using Facebook. 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.
Post as a guest Name. It tells you precisely how to use just two resistors to set the voltage of the output to whatever it needs to be. Fixed and adjustable output voltage versions, featuring the reference bypass. Connect to resistor voltage divider.
I’m trying to design a circuit that will power my 12V LEDs. As such, you have the adjustable version, and by tying the “GND” pin, really the “ADJ” regjlator ground, it defaults to the 1. Are you sure you have the 3. General Description 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 current iA at mAresistor voltage divider.
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The MIC is an efficient linear voltage regulator with very rgulator dropout voltage typically 17mV atInput: As you can see the output voltage tracks the input voltage above a few volts with a small voltage drop of some hundred of mV that depends a bit on the loading.
This voltage is given as the minimum at which the output will be 12V. Bruno 50 1 2 6. Is this schematic feasible? Here’s the datasheet for the KAR12C: Your LED lights will probably get dim from a relatively small drop in voltage. The actual solution to OP’s problem can be quite easy.
That part looks potentially suitable if protected from transients as may be necessary. 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 experience by the years.