describe:
SD3302 is a tact switch control, which can achieve: "100% on - 25% on - flash - off"
Four-mode cyclic conversion LED driver chip. The chip is integrated with anti-do. Versatile LED driver applications can be implemented without MCU programming.
The key input signal detection circuit with shaking function can realize the detection of the tact switch. The LED can be fully bright, 25% bright and flashing through the touch switch.
The function changes, and the SOS mode can be realized by long pressing the switch for more than 3s.

characteristic:
✦ 100% on, 25% on, flash, off cycle mode
✦ Long press the switch for 3s to switch to SOS mode
✦ Working voltage: 2.5V~5V
✦ Work efficiency up to 92%
✦ Drive current capability up to 1.4A
✦ 2μA sleep mode current
✦ Built-in NMOS can directly drive 1~5W LED
✦ SOT23-6 green package
✦ Built-in anti-battery reverse connection function

APPLICATION:
✦ Mobile flashlight
✦ LED headlights
✦ LED driver