5 Volt Detonator w/ Inine Voltage Regulator w/ Protection for CR2 Batteries

[Robert]

This PV has the same inline voltage regulator as my 2 button Multi
volt Detonator. Accept it only works at 5 volts with 2 CR2's

The regulator does not allow CR2 batteries to discharge below 2.5 Volts.

Rapid Discharge of CR2 batteries is not good for the battery and may lead to battery venting.

I liked the 2 button design- but was worried my Fiance might discharge the CR2's too far. With the regulator only allowing the batteries to go down to 2.5 volts rapid discharge or battery venting issues are eliminated.

Although care must still be taken while charging CR2's



These are the specs on the regulator- I use the 3 lead version.


Product Information Features

• Precision Positive Linear Series Pass Voltage Regulation
• 0.45 V Dropout at 3 A
• 50 mV Dropout at 10 mA
• Quiescent Current Under 650 µA Irrespective of Load
• Adjustable (5-Lead) Output Voltage Version
• Fixed (3-Lead) Versions for 3.3-V and 5-V Outputs
• Logic Shutdown Capability
• Short-Circuit Power Limit of (3% × VIN × ISHORT)
• Low VOUT to VIN Reverse Leakage
• Thermal Shutdown

All trademarks are the property of their respective owners.
Description


The XXX–3/–5/–ADJ family of positive linear series pass voltage regulators are tailored for low-drop-out applications where low quiescent power is important. Fabricated with a BiCMOS technology ideally suited for low input-to-output differential applications, the XXX–5 passes 3 A while requiring only 0.45 V of typical input voltage headroom (ensured 0.6-V dropout).
These regulators include reverse voltage sensing that prevents current in the reverse direction. Quiescent current is always less than 650 µA. These devices have been internally compensated in such a way that the need for a minimum output capacitor has been eliminated.
XXX–3 and XXX–5 versions are in 3-lead packages and have preset outputs at 3.3 V and 5.0 V respectively. The output voltage is regulated to 1.5% at room temperature. The XXX–ADJ version, in a 5-lead package, regulates the output voltage programmed by an external resistor ratio.
Short-circuit current is internally limited. The device responds to a sustained overcurrent condition by turning off after a tON time delay. The device then stays off for a period, tOFF, that is 32 times the tON delay. The device then begins pulsing on and off at the tON/(tON +tOFF) duty cycle of 3%. This drastically reduces the power dissipation during short-circuit and means heat sinks need only accommodate normal operation. On the 3-leaded versions of the device tON is fixed at 750 µs, on the adjustable 5-leaded versions an external capacitor sets the on time. The off time is always 32 × tON. The external timing control pin, CT, on the 5-leaded versions also serves as a shutdown input when pulled low.
Internal power dissipation is further controlled with thermal overload protection circuitry. Thermal shutdown occurs if the junction temperature exceeds 165°C. The chip remains off until the temperature has dropped 20°C.
The XXX series is specified for operation over the industrial range of –40°C to 85°C, and the XXXseries is specified from 0°C to 70°C. These devices are available in 3- and 5-pin TO–220 and TO–263 power packages.


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Not much bigger that a Bic lighter.









Power Lock Out- For carrying in pocket.

[Nuck]

Looks good. An important note though, the UCC283-T chip won't protect against shorts which is the main issue with those batteries.

Just curious, why did you XXX the TI chip? It's been posted all over these boards for months and is commonly used in many mods.

[Robert]

I've gotten too many for free- didn't want to over burden TI further.

Nuck's probly right, I'm new to electricity. Actually in the middle of an Elec 103 course at the moment. Making these Mods was a way for me to teach myself more- and learn more from others. I am studing cuircuts so I decided to make some myself.

Question- since the description says-

Logic Shutdown Capability
Short-Circuit Power Limit of (3% × VIN × ISHORT)
Low VOUT to VIN Reverse Leakage

dosen't this give any protection from rapid discharge? Isn't rapid discharge the main worry?

[Robert]

oh and thanks for saying they looked good...

OMG- I also- have just noticed something amazing.........

The Pink one GLOWS in the DARK !!!

I thought I was seeing things last night- but I just confirmed it- the Pink one glows in the dark after being exposed to light. I saw it glow after 3-4 hours last night. I will get some pix later tonight.

[Nuck]

I've gotten too many for free- didn't want to over burden TI further.

Nuck's probly right, I'm new to electricity. Actually in the middle of an Elec 103 course at the moment. Making these Mods was a way for me to teach myself more- and learn more from others. I am studing cuircuts so I decided to make some myself.

Question- since the description says-

Logic Shutdown Capability
Short-Circuit Power Limit of (3% × VIN × ISHORT)
Low VOUT to VIN Reverse Leakage

dosen't this give any protection from rapid discharge? Isn't rapid discharge the main worry?

I've actually shorted countless times modding with that chip and it did nothing to prevent it. I've shorted across the chip itself...and again, bats destroyed. I have destroyed about 8 bats now.

Luckily I normally use LiFePO4 bats or I'd have to mod with a fire extinguisher

[Robert]

I heat shrinked each connection to the chip and a little around the heat sink ( also Neg.) so hopefully none of mine will be able to short across the terminals- they're all covered in heat shrink individually.

[cddz]

Robert,
You do realize that pink glows in the dark right?

[Robert]

yeah- that's what I said but it dosen't glow pink- it glows green - like the moon in yer avatar.

dx- had glow in the dark rubber flashlight end caps but they weren't pink.

[cddz]

yeah- that's what I said but it dosen't glow pink- it glows green - like the moon in yer avatar.

dx- had glow in the dark rubber flashlight end caps but they weren't pink.

Oh LOL TLDR gues I should have, I made one of those a long time ago with the green cover. Used a crappy Tact switch and the case for a ground. I'll just say it sucked! Anodized and case ground don't work the greatest

[Robert]

You don't ground it to the Anodized part- you use the lip inside where it is not anodized. Mine works great- sorry yours sucked.

I made a video showing everyone how to make one here- How to make a 5 Volt "Detonator" Video aka Magnum 5 volt - e-cigarette-forum.com • The place for electronic cigarette reviews, news and chat