Optimised LD-2 hardware (not much left to improve there) - very low internal resistance (sub 5mOhm), low active state current consumption (1.6mA typ.), reliable 1S-4S operation/support
User configurable settings/UI - max. current, mode groups, moonlight, mode memory, CC/DD on high, mode order, strobes, dual overtemp. protection with adjustable ext. threshold, cofiguration mode password
Adjustable current in UI - no need to change resistors to get desired current
Option to choose between constant current/direct drive (CC/DD) on high mode
Configuration mode password - prevents end users to accidentally enter into configuration mode and mess-up settings
Everything is in datasheet this time,and I think there is no need to write long, hard to read text in topic,so here are pics of datasheet:
Internal resistance depends mostly on fet resistance,nothing magical there,the lower fet resistance,the better,but there is a point where potential gain (output current) is neglible,and that point is IMO about 5mOhm of driver internal resistance.
Led4power was so kind to send me the LD3 prototype, but I have not had enough time yet to do a proper review. But the bottomline is that the LD3 has (almost or exact?) the same hardware as the LD2 but the UI has dramatically changed: it is clicky only now, with a wagonload of useful settings and a very well functioning configuration procedure. I like it a lot sofar!
Wait! djozz, did you say clicky only? I know a lot of lights are clicky, but sometimes a clicky just won’t do. Wonder why e-switch was left out! :cry:
Otherwise, just from reading the page that PD zoomed in, it looks to be a very worthy upgrade for LD-2! I just hope LD-2 stays available for e-switch lights, or another alternative is offered.
EDIT: I just glanced over the preliminary datasheet, and I’m amazed at the depth of configurability and functionality of this driver! Still wish it would support e-switch, but for a clicky switch driver, I don’t think there’s one out there that compares!
@pilotdog
Note <10mohm for DD drivers,that means just that,less than 10mohm.Since there are a lot of different DD drivers and even more different FETs used,internal resistance varies from maybe 2mohm to 10mohm,but most of them have 4-6mohm.
Well, i was always wanted an Eu source for a good drivers like yours that are suitable to drive a single XML emitter type with 2( or more) 18650s, especialy in the 17/20mm form factor cause atm we have only MNT ones
Also a good driver for XHP35 in the same form factor driven by 4 Liions
Thanks! After I saw the datasheet, I figured that was the case. This really does look to be an awesome driver! Good job! I wouldn’t have thought there would be much room for improvement after LD-2. Hardware-wise, it seems I was right, but the UI of the LD-3 is incredible!
