independent kiwi spirit of invention.
list by Ian Mander started 1 February 2008. Added to this site (Aqualab)
26 November 2008. Database released 27 May 2009.
Please note that the date mentioned below that the database code was last updated
is not the date the data itself was last updated.
Driver List Database code 20 November 2018
Footnotes 10 August 2016
Recent buyers have reported problems with this driver. Buyer beware.
Boost driver, possibly Seiko S-8352D boost chip. Uses PIC12F629 microcontroller chip for modes, probably with an AMC7136 (sic) linear regulator (datasheet, PDF 954 KB) for dropping small excess voltage as well. 5 modes: High (1,000 mA), mid (350 mA), low (50 mA), strobe (1,000 mA), SOS (1,000 mA). Testing here and here shows that above 2.4 V input the output current is surprisingly regulated. Average efficiency 70%.
5 modes; high (100%), medium (30%), low (5%), SOS, strobe. Output voltage 2-7 V, manually set; possibly hence the mention of direct drive. Claimed output of 3 A is seriously dubious (it might actually be input current). See DX sku.7882 for more details on the Nanjg 18 driver.
The input voltage range may mean it is not suitable for a single AA, since even a new AA's voltage would drop under 1.5V immediately. Claimed output current 600 mA from 1.5 V input, 1.2 A from 4.2 V input. See DX 25505 for more details.
Output current 600 mA with 1xAA, 1000 mA with 2xAA. Three modes; high, medium (30%), low (5%). PWM frequency 1 kHz. Flashing warnings for high temperature and low voltage (not stated if it warns at several low voltage levels). Bottom board (which is where the model number V10-136 comes from) apparently does nothing except provide a 17 mm board and can be removed to leave just a 15 mm single board boost driver with components on both sides.
Output current 5 A for 1 LED, 2.6-3.0 A for 3-4 LEDs; apparently not suited for 2 LEDs. Three modes with memory; high, medium (30%), low (5%). PWM frequency 1 kHz. Thermal protection and low voltage warning.
Boost driver, 20 modes in three groups. Output voltage and current not constant, 1.0 V in gives ~300 mA out, 1.4 V in gives ~700 mA out. Run on two fresh NiMH it outputs 1.8 A and gets very hot - not advised. I believe this is identical in operation to the AAA driver except for physical size (and the new version of this board is black). "LDCH" on the back of the board is the manufacturer.
Output current varies from claimed 5 A for 1 LED (which disagrees with the claimed 8-10 W) to 3 A for 3-4 LEDs. However, 2.8 A is also claimed by sales staff answering a thread question - buyer beware. 3 modes with memory; low, medium, high (no mention of ratios/duty cycle). Low voltage protection at 5.7 V, thermal protection (heatsinking possibly required).
Output current is a guess. Input/output inconsistencies - buyer beware. Is it a boost driver or a buck/boost driver? One user claims it uses the XL6001 driver chip (datasheet - not presently linked from their web site), which offers PWM dimming. Efficiency figures from that datasheet.
Constant current boost driver with either PAM2801 (max 350 mA) or PAM2803 (max 1000 mA) or J1JD (?) chip. Latest version outputs 630 mA; originally set to 380 mA. Claimed variable output current depending on input voltage, 600 mA (with 1.5 Vin) to 1.2 A (with 4.2 Vin), which makes me wonder what on Earth DX means by "Fully regulated circuit design"; those figures obviously aren't. However, testing by Hilarion showed perfectly stable current output from 1.2-3.2 V; very nice, although only 360 mA. Output current is determined by a sense resistor with 95ħ5 mV feedback voltage. Thus 0.25 Ω sense resistor as supplied in 2009 gives 380 mA, 0.15 Ω as presently supplied gives 630 mA,
0.1 Ω gives 950 mA (measured 900 mA at ~80% efficiency). Efficiency is said to drop horribly with input current > 2 A.
As pointed out in this thread there are no components to buck voltage as implied, so it would actually be direct drive when Vin is greater than Vf of your LED. Alternative source Lights Castle 530003.
Output current variously stated as 2.6-3.0 A and 2.8-3.0 A. Output voltage 30 V (range unknown). 5 modes; high (100%), medium-high (75%), medium (50%), low (30%), very low (5%) (no strobe!). Thermal protection, low voltage warning at 9 V.
Output current variously stated as 2.5-2.8 A and 2.6-3.0 A. Output voltage 23 V (range unknown). 5 modes; high (100%), medium-high (75%), medium (50%), low (30%), very low (5%) (no strobe!). Thermal protection, low voltage warning at 6 V.
Output current variously stated as 2.5-2.8 A and 2.6-3.0 A. Output voltage 17 V (range unknown). 5 modes; high (100%), medium-high (75%), medium (50%), low (30%), very low (5%) (no strobe!). Thermal protection, low voltage warning at 6 V.
5 modes, high, medium, low, strobe, SOS. Very much non-constant output; 1.5 V in gives 500 mA out, or 3.6 V in gives 800 mA out, but claimed to be constant current at 1.8-3.6 V. The talk of linear regulator in the product description just shows they don't know what they're talking about.
Very much non-constant output; 1.5 V in gives 500 mA out, or 3.6 V in gives 800 mA out, but claimed to be constant current at 1.8-3.6 V. The talk of linear regulator in the product description just shows they don't know what they're talking about. The review mentions it's quite inefficient.
5 mode; high (700 mA with 1x AA, 900 mA with 2x AA), medium, low, strobe, SOS. Low voltage warning at 0.8 V and 1.8 V. Polarity protection. Also available (for much less) from Intl Outdoor Store p-417.
Unknown driver operation. Assumed to be boost because of the claimed ability to drive 5 LEDs from 12 V DC, but claimed output voltage is 12 V. AC rectifier built in. Efficiency is claimed minimum. The stated length probably includes the LED leads. Duh.
Output voltage 30 V. Output current variously stated to be 2.6-3.0 A and 2.8-3.0 A, and output power 70-100 W when running on 3-4x Li-ion cells (which contradicts the claimed input voltage range); buyer beware. Input current can be up to 8 A. 3 modes; high, medium (30%), low (10%). Low voltage warning at 9 V (although a working minimum of 6 V is also stated). Thermal protection at 55-60 °C (this seems very low).
Output voltage 23 V. Output current variously stated to be 2.6-3.0 A and 2.5-2.8 A, and output power 50-60 W - the same as the 5 LED version; buyer beware. Input current can be up to 8 A. 3 modes; high, medium (30%), low (10%). Low voltage protection at 6 V. Thermal protection at 55-60 °C (this seems very low).
Output voltage 17 V (range unknown). Output current variously stated to be 2.6-3.0 A and 2.5-2.8 A, and output power 50-60 W - the same as the 7 LED version; buyer beware. Input current can be up to 8 A. 3 modes; high, medium (30%), low (10%). Low voltage protection at 6 V. Thermal protection at 55-60 °C (this seems very low).
Output current varies from claimed 5 A for 1 LED (which disagrees with the claimed 8-10 W) to 3 A for 3-4 LEDs. However, 2.8 A is also claimed by sales staff answering two separate thread questions - buyer beware. 5 modes with memory; high, medium, low (no mention of ratios/duty cycle), strobe, SOS. Low voltage protection at 5.7 V, thermal protection (heatsinking possibly required).
Maximum output voltage 38 V. Maximum input current 500 mA. Output current set by solder jumpers in 9 steps from 10 mA to 200mA. Dimming by PWM signal. Soft start. Maximum claimed efficiency listed here; typical efficiency for any particular configuration unknown.
Output current set by solder jumpers in 15 steps from 200 mA to 2050 mA. Tested up to 3 A output. Soft start function. Maximum input current 7 A. Maximum output voltage ~55 V. Maximum output power >100 W. Maximum claimed efficiency listed here; typical efficiency for any particular configuration unknown. Thermal protection. External PWM input and external shut down.
5 modes with memory; high, medium (30%), low (3%), strobe (9 Hz), SOS. Claims to be suitable for 1x 14500 cell, but doesn't say if it's in direct drive with that input, relying on the voltage drop of a small Li-ion cell.
Three mode; high, medium (30%), strobe (9 Hz). Reverse polarity protected. Specs mention "(1 x 123A or 1 x 16340 battery)" but a 16340 li-ion cell would likely cause this boost driver to be in direct drive.
Boost driver, input voltage must be less than output voltage. Maximum output 80 V. Adjustable output current limit. Input current less than 5 A for optimal performance. Has open circuit and reverse polarity protection. (Note that if turned on while open circuit, output will rise to 80 V - shock hazard.)
Previous version (pre Feb 2010) maximum 1.3 A output.
Former version 19 mode Nanjg 16 (NJG-016) is the one pictured on DX. New version (NJG18) has the first mode group with just low, medium, high as detailed here.
Previous version: 19 mode boost driver using "Seiko S-8352D (or a clone thereof)" (datasheet, PDF 528 KB) which is a constant voltage boost driver chip. User-adjustable output voltage (not current) ~2 V up to 7.4 V. Output voltage must be greater than input voltage; one report says it will keep working down to 0.3 V but will not turn on unless input voltage is at least 1.1 V. Note that it runs out of regulation, so is not a constant current or constant voltage driver. Capable of ~700 mA output from a single AA NiMH cell, or ~1000 mA from two. Efficiency in the 60-70% range if output is much over 1 W (running the board on 1x AA), and pushing 90% at ~1 W - amazing for an inexpensive boost driver. Do not operate without a load connected.
Is it suitable for a Li-ion cell? See a good analysis here by Tido, who writes: "Yes and no. It's possible to use this circuit with a high Vf LED like an XR-E... Things are different with an XP-G..."
Tip 1: To disable modes (and a mode list) see this post.
Tip 2: A mod to get this driver to fit an Ultrafire A10 is detailed here.
$4.74 each (down from $4.82 while it was sold out, down from $5.02), also available in 5 pack (sold out and/or discontinued)
Boost driver and buck driver
Unclear what it does when input voltage is greater than LED Vf - possibly just direct drive, but it claims to buck. Similar to Nanjg 28 but with contacts for different mode groups like AK-47; with a suitable switch you could change between groups with 2, 3, 3 and 5 modes on the fly. Output current with 1x AA claimed to be 300-500 mA. This review says the low and medium modes are very close together.
Formerly product ID 10243. Also available as a 5 pack, S009114 (formerly product ID 10246).
Boost driver (uses 2106F regulator chip). Reliable test data is hard to find and is complicated by people using different wiring methods. Some results are here and here but in the latter test, as pointed out, the output voltage dipping while the output current still climbs does seem a bit hard to believe. Discussion thread here.
Tip 1: It seems that modifying the set resistor to give a lower output current (max 500 mA) is a good idea.
Tip 2: Different wiring methods may give different efficiency figures.
This product has vanished from the retailer's web site.
Boost regulator, although Wayne says "The Shark has a hard time at voltages below ~4V". Vin must be less than Vout, and should be >1/3 Vout (preferably >1/2 Vout). Maximum input current 4 A, efficient up to 2 A. Regulates on voltage or current, output current adjustable from 50-980 mA (or greater by changing set resistor, although that would remove load protection) at maximum 26 V. Open circuit protected. Some questions are answered in this forum thread.
"Great for use in Mag C & D and fixed lighting applications."
980 mA constant current
Boost regulator. Maximum input current 4 A, said by manufacturer to be still efficient >3 A. Regulates on voltage or current, output current adjustable from 50-980 mA (or greater by changing set resistor, although that would remove load protection) at maximum 32 V. Includes copper heatsink; improved thermal performance and higher output voltage over standard Shark.
I note that Wayne here recommends new buyers to get three.
Boost regulator. Vin must be less than Vout. User configurable constant current, 350-1300 mA (increased from 1200 mA) at up to 29 V (increased from 24 V). uController UI, status LED. Open circuit protected, polarity protected.
Boost regulator, but apparently needs to be started with Vin between 3.4 V and Vf to start the full current regulation mode, otherwise it starts in safe mode, which is 1.5 A maximum input current. Constant current output, maximum 1 A. Board available as a "blank" (add set resistor), or preset to 400 mA, 500 mA, 750 mA and 1000 mA. Must always have a load connected.
Buck/boost regulator. Constant current output, board available as a "blank" (add one or two SMT set resistors), or preset to 500 mA, 750 mA, or 1000 mA. Maximum output voltage 5.4 V. Must always have a load connected.
$13.00 for all except $16.50 for 750 mA and 1 A versions + shipping
1000 mA constant current
Boost regulator. Vin must be less than Vout. Maximum Iin 1.5 A. Constant current output, board available as a "blank" (add set resistor), or preset to 300 mA, 400 mA, 500 mA, 750 mA, or 1000 mA. Must always have a load connected.
Maximum output voltage 48 V. Input voltage must be at least 3 V lower than output voltage. Dimmable with external potentiometer (0-100%) and on board trim adjustment (75-125%). 7 pin SIP interface for PCB mounting; wiring harness optional extra. Output has short circuit protection (15 seconds) and open circuit protection.
Can be used as either a buck, or boost, or buck/boost driver - see the Application Notes for connection diagrams and other info. Not a constant current output; they claim this is a design feature to mimic the light dropoff of an incandescent bulb. I'm not convinced. Maximum 8 V output. Can be used in parallel. Efficiency as a boost driver claimed 70-82% (measured at 64-78% in a test with an XP-G here), as a buck driver 82-89%; as a buck/boost driver 62-72%. The datasheet doesn't claim an IP rating but does say "The 2009A is encapsulated by an insulating epoxy and is resistant to harsh environments and moisture."
Available in three versions with nominal outputs of 350, 400 (error in window title bar) and 500 mA.
Description claiming "output voltage: less than 1.5V" is just a laugh, as is the "Length: 7.50cm" dimension and the "5pcs a pair" quantity. Unknown minimum input voltage - values given here are just a guess. Buyer beware.
Driver board with combined LEDs - triple Cree XP-E R3 (cool white). Three modes; 100%, 20%, 2%. An extra momentary button (not supplied) allows access to four flashing modes and to manually set the middle mode anywhere in the range 0-50%.
A new 1.55 A version is undergoing testing, as discussed here.
Driver board with combined LEDs - triple Cree XP-G R4 (neutral white). Three modes; 100%, 20%, 2%. An extra momentary button (not supplied) allows access to four flashing modes and to manually set the middle mode anywhere in the range 0-50%. Below ~4.8 V in the output will drop out of regulation.
A new 1.55 A version is undergoing testing, as discussed here.
Driver board with combined LEDs - triple Cree XP-G R5 (cool white). Three modes; 100%, 20%, 2%. An extra momentary button (not supplied) allows access to four flashing modes and to manually set the middle mode anywhere in the range 0-50%. Below ~4.8 V in the output will drop out of regulation.
A new 1.55 A version is undergoing testing, as discussed here.
Boost board. Output voltage and current not constant; almost 300 mA from one fresh AA, almost 700 mA output with two fresh AAs. Modes are high, low, and three different flashing options! No mode memory.
Tip: Remove controller board to use as single mode driver.
Boost regulator. Vin must be less than Vout. Maximum 5 A input. User adjustable constant current output up to 2 A or 48 V (45 W max). Optional external adjustment. Open circuit protected, but if doing so, LED(s) must not be connected until output has discharged from 48 V.
Stupidly, this driver completely vanishes from the retailer's web site when temporarily out of stock.
SKU 1219. Three mode, low (80 mA), medium (350 mA), high (1000 mA). Built-in voltage protection, will turn off at 2.8 V. Polarity protection.
Last updated 10 Jun 2011.
5 mode board
$5.95 + shipping (sold out and/or discontinued)
Boost driver and buck driver
This driver has been replaced on the retailer's web site with a 3 mode linear regulator (with the same URL). Plain weird or a typo?
Old details: Claims to be a boost/buck driver, implying it can handle multiple LEDs, but no information is provided about that. 5 modes - high (1000 mA), medium (300 mA), low (100 mA), strobe, SOS. Mode memory.
All prices in US$ (except where dual prices are listed in US$ and €
for some European retailers).
All driver boards from DealExtreme and KaiDomain include shipping.
Information is unfortunately not guaranteed to be correct.
any updates, corrections, omissions, etc.
However, please don't bother sending me an email to tell me about
your company's LED products. It will be treated as spam. I really
don't like spam, and SpamCop is busy enough as it is without having
to process your email as well. Putting "Re" in the front of your spam's subject does not make it any less likely your spam will be sent to SpamCop.
Recommended drivers highlighted in green.
They have a good combination of price, features and efficiency.
Drivers no longer available (sold out
or backordered) are highlighted in grey.
Recommended drivers no longer available
are highlighted in a darker green.
Drivers listed at those resellers as "Backordered" etc
for more than a month are deemed to be discontinued (although I'm happy
to later be proven wrong).
Don't connect drivers that have capacitors across their outputs to
LEDs while the driver is powered. An explanation
(on CPF) why not.
No mains driver will be completely waterproof. Those that are water resistant mostly have an IP rating (eg, IP67).
on Schottky diodes(click to
Schottky diodes are diodes that have a low voltage drop across them. 0.3 V is a typical figure, compared to around 0.60-0.65 V for a typical silicon diode. This makes Schottky diodes good for rectifiers and LED drivers where high efficiency is required. Drivers that use the AX2002 such as DX 3256 can easily be modified for higher output current but the Schottky diode needs to be replaced if the output current is to exceed 1 A.
Inexpensive Schottky diodes are available from these sources:
These MR16 drivers have four 1 A (SS14) Schottky diodes on them used for the rectifier plus another for the driver (links jump to driver info in table above):