MaxFlex

TASKLED - Smart LED drivers

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Latest News (24 Dec 2007): New UI-uni (UIF/UIP/UIB2) shipping. New maxFlex2 hardware design with new high performance inductor.

MaxFlex2:

Microcontroller based Constant current boost regulator.
User configuration options stored in non-volatile EEPROM.
Ships configured for 350mA current limit.
User reconfigurable current limit: 350/500/700/1000 or 1200mA at any time.
Unification of UIF/UIP firmware with the UIB2 firmware.
3 user configurable voltage trip points to set independent Medium, Low warning levels and Cutoff.
If an optional 3mm or 5mm status LED is connected, the user can configure the status LED to warn when the voltage reaches Medium (status LED lights constant) or Low (status LED flashes).
Temperature monitoring of driver board. If closely coupled with the light's body, it can be user configured to force the current output to reduce. Optional trip points of 50, 60, 70, 80, 90C or off.
UIB2: Bike optimized, Choice of 2 level (duomode) or 5 level (multimode) operating modes.
UIF: 8 level dimming, fixed lighting use optimized..
UIP: 5 level dimming, flashlight use optimized.
Non-volatile storage of brightness level.
Draws < 50uA when in 'sleep mode' (25uA typical).
User selectable voltage trip point to warn of low input voltage, useful to protect rechargeable batteries from overdischarge (Refer technical section).
>85% efficiency.
Can drive up to 24V of series connected Luxeons.
Operates from 2.5V to 20V (input voltage). Being a boost converter, input voltage must be less than output voltage.
Open circuit protected (boosts to 24V maximum).
Board is circular (0.90" diameter, 0.25" thick)

Older maxFlex information.

MaxFlex:

Microcontroller based Constant current boost regulator.
User configuration options stored in non-volatile EEPROM.
Ships configured for 350mA current limit.
User reconfigurable current limit: 350/500/700/1000 or 1200mA at any time.
User configurable choice of 3 UI's. The user can select either the Fixed lighting (UIF version, 8 'brightness' level) firmware, the Flashlight (UIP, 5 'brightness level) firmware or the new Bicycle (UIB) firmware. Refer to the maxFlex technical section for downloadable PDF manual.
Non-volatile storage of brightness level.
Draws < 50uA when in 'sleep mode' (25uA typical).
User selectable voltage trip point to warn of low input voltage, useful to protect rechargeable batteries from overdischarge (Refer technical section).
>85% efficiency.
Can drive up to 24V of series connected Luxeons.
Operates from 2.5V to 20V (input voltage). Being a boost converter, input voltage must be less than output voltage.
Open circuit protected (boosts to 24V maximum).
Board is circular (0.80" diameter)