LED torch using MAX660

Posted on Feb 6, 2014

This is a simple LED torch circuit based on IC MAX660 from MAXIM semiconductors. The MAX 660 is a CMOS type monolithic type voltage converter IC. The IC can easily drive three extra bright white LEDs. The LEDs are connected in parallel to the output pin 8 of the IC. The circuit has good battery life. The switch S1 can be a push to ON switch. @Taimu

LED torch using MAX660
Click here to download the full size of the above Circuit.

r, Led`s may not glow even in 3V supply! Cause different LED`s Have different drop out voltage( The minimum forward bias voltage to turn the LED on). For white LEDs, it`s higher than the 3V. Max 660 can derive -3V from the supply at pin5. so in the circuit, across the pin 5 and 8, a voltage difference of 6V is available. It`s sufficient to turn on the LED and glow it!

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    CW Sidetone Generator
    2 LED flasher with two 2N3904 transistors
    Switch-Selected Fixed-Voltage Power Supply
    Precision Audio-Frequency Generator Circuit
    Lie detector
    Fan Controller Using Just Two Components
    Infra-Red Proximity Detector
    Audio Memo Alert Circuit
    CMOS Integrated Switched-Mode Transmitters for Wireless Communication
    TV video output for the EB675001DIP
    MM36SB020 two-wire wiring diagram