LFlex Product Information

TASKLED - Smart LED drivers

LFlex V3.0

Direct Drive with Dimming

Ideal single Li-ion/Poly to single LED solution
Utilizes linear regulator dimming control
uController based
UI-UNI3 firmware
STAT output

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LFLEX V3.0 Linear Driver:

Linear dimming driver. Utilizes a high power FET run as a linear regulator

Maximum input voltage 17V, nominal minimum input voltage 2.7V.

Ships with UI-UNI4 firmware.

Non-volatile storage of brightness level.

Maximum drive current 3.5A (choice of 7 current tables, 500mA/1000mA/1500mA/2000mA/2500mA/3000mA/3500mA).

uController based design.

Momentary action switch controls User Interface (UI).

Draws ~50uA in sleep mode (less than 0.04 Amp.Hours per month).

STAT output. 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). With on-board 100 ohm series resistor.

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.

Protected against reverse polarity connection, output open circuit protected.

Board is 0.780" in diameter (<20mm). Maximum thickness 0.120".

Lflex V1 and V2 information:

LFLEX V2.0 Linear Driver:

V2.0 released 20 April 2011, minor thermal path improvements over V1.0.

Linear dimming driver. Utilizes a high power FET run as a linear regulator

Maximum input voltage 17V, nominal minimum input voltage 2.7V.

Ships with UI-UNI2 firmware.

Non-volatile storage of brightness level.

Maximum drive current 3.5A (choice of 7 current tables, 500mA/1000mA/1500mA/2000mA/2500mA/3000mA/3500mA).

uController based design.

Momentary action switch controls User Interface (UI).

Draws ~50uA in sleep mode (less than 0.04 Amp.Hours per month).

User selectable voltage trip point to warn of low input voltage, useful to protect rechargeable batteries from overdischarge (Refer to technical section).

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.

Protected against reverse polarity connection, output open circuit protected.

Board is 0.780" in diameter (<20mm). Maximum thickness 0.120".