General Description. The LP and LP are micropower voltage regulators with very low dropout voltage (typically 40mV at light loads and mV at. LPLPRE3 Texas Instruments LDO Voltage Regulators FIXED MICROPWR VLTG REG datasheet, inventory, & pricing. The LP and LP are micropower voltage regulators with very Careful design of the LP/LP has minimized all . See MIL/AERO Datasheet.

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What I like about the ATtiny26 board is the convenient arrangement of two ports with access to power and ground at several points, coupled with the well-laid out prototyping area. Did you look at the datasheet from that company? If I connect the 4. Not realizing this we designed our main board which uses the pushbutton power switch with one of these connected to the OFF pin. I could post the entire project if you think it would help sales of the ATtiny26 board I do intend to buy a few more — the sale price is very attractive, so be sure and save me a couple!

The unit is currently monitoring the cosmic background radiation in my office 95 counts in seconds. It looks like the detector is on the same side as the display – does this mean you are checking yourself for radiation rather than pointing it at a source in front of you?

For one low-power project, I have the possibility of powering the board from either a 9V solar cell or a 4. I suspect that no long term damage should result from this misuse, as long as one does not exceed other component ratings. The board is shown below. My most recent project with the ATtiny26 board is a Geiger counter. There is one error in the published circuit: My power supply current-limited at about 1 amp.


Datashret rainbow cable leading off screen goes to the two pushbuttons and the LCD. I do that sort datsheet thing all the time, and I have had no problems. Since there is some interest, my Geiger counter is based on a circuit described by Tom Napier in Circuit CellarNovember The counter input INT0 is datashet with a green arrow.

If only the ATtiny26 had a bit more memory… Thanks, Jim. I can always use diodes to switch between solar and backup supply, but I thought I could float charge the battery without such trickery. Shop Blog Forum Support.

I expect that the regulator can tolerate this but it might add some unnecessary current drain. There is a small current draw increase at 5.

ATtiny26 board / LP regulator – Electronics – Pololu Forum

Where did you get your Geiger tube? I especially like the plated through holes, which are fantastic for prototyping if you have to remount components several times. Thanks for checking on the regulator — maybe I shorted the power supply while hooking things up.

The HV generator is top right, leading to the connector for the V tube bias red arrow. Beta and gamma radiation are much more penetrating so the direction the tube is pointing is less important and is actually irrelevant for gamma radiation. The C program and the two buttons provide a menu-based system to set dagasheet data collection parameters and do the counting.

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Can you try doing the regulator test again? By the way, I really like the board design. I had to jump! Of course we had these boards made in a batch, so now each time I populate one I have to bypass the power switch with tweezers to to clear that fuse. Can you tell me what you like about it?


I could post the entire project if you think it would help sales of the ATtiny26 board.

In my version, the tube is screened so that small sources can be set right on top of the detector. The JTAG fuse comes set, which makes some pins start up set high. What puzzles me is that the regulator encounters this situation every time the external source is switched off and there are capacitors in the circuit that must be discharged, so there is some reason to think that such a transient backflow is not damaging. Both have a thin and very delicate metalized membrane for measurement of alpha radiation.

Fortunately, I disconnected it quickly enough to prevent any obvious permanent damage to the regulator. It features an internal V power supply 2 mA total draw! By the way, there are a few manufacturers of the part, and your board probably has the one from On Semiconductor. The LP data sheet does not give any insight into this situation.

The program currently occupies out of bytes of program memory. Is the RS option useful? Well, I connected a 4.

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We datashwet probably buy a few, especially if the footprint was compact. I do intend to buy a few more — the sale price is very attractive, so be sure and save me a couple!

I just tried taking a regulator part not on a board and applied from 4. See below for the exterior appearance. We even had some ATmega8 versions made, but we never sold them there were some other factors besides the ATtiny26 board not doing well, such as dafasheet mega coming out and the move to 6-pin ISP connectors.