วงจรไฟฉาย Sofirn SP31 Ver.2 Flashlight Driver Circuit Board Anti-reverse LED Driver Chip for different models

Sofirn SP31 Ver.2 Flashlight Driver Circuit Board Anti-reverse LED Driver Chip for different models

Sofirn SP31 V2.0 flashlight Driver is an upgraded version of the Sofirn SP31 V1, with Advanced Temperature Regulation (ATR) technology,
battery power indicator and improved user interface.It can be operated from a single 18650 Li-ion rechargeable battery
or two CR123A batteries. It features 7 modes:Eco-- Low --Medium--High--Turbo, hidden strobe and SOS,
by one side switch and one tactical tail switch.
Also Protection with Reverse polarity protection, low voltage protection and have Memory mode function

Specifications:
Input Voltage : 2.8-6.6 volts
Battery Supported : single 18650 or 2*CR123A li-ion batteries
Diameters : 20.4mm
Mode Memory : It memorizes the last brightness level used in the general modes, but it does not remember the Strobe mode. It will activate the last brightness you selected, when you turn on the flashlight next time.

Reverse polarity protection : to protect from improper battery installation
Constant current output is adopted

Advanced temperature regulation (ATR) technology
It adjusts the brightness level automatically when the driver temperature reaches 60 to keep the light from overheat.

Automatic Stepdown:
Turbo steps down to High after working for 3 minutes to avoid overheat. The ART works if the drivers reaches 60.

Low voltage warning:
It is lower than 3.1 volts if the LED Red indicator (on the side switch) flashes rapidly when you turn on. Then please recharge the battery.

Low Voltage Protection:
If the voltage is lower than 3.0 volt when turn on, automatic stepdown works. so it keeps stepping down to the lowest mode and runs out power juice. Please insert new battery if you get this signal.

Battery Capacity Indicator (LED on the side switch)
The indicator is on for 5 seconds every time when light turns on. It shows green or red to indicate the battery power.

Steady Green : Enough power
Steady Red : Short of power

Flashing Red: running out of power. Please insert a new battery!

Operation Instruction:
The tactical tail switch turns on or off
The side switch to choose modes

1.one click to adjust one mode. It cycles from Eco-- Low --Medium--High --Turbo --Eco;
2.Press 1.2 seconds to active Strobe, and one click again to active SOS; it cycles SOS-- Strobe-- SOS; press 1.2 seconds again to returns to common modes
3.Memory function: It work for Eco/ Low / Medium / High/ Turbo (Strobe or SOS cannot be memorized)