Application scene: makeup mirror, touch switch, touch dimmer mirror.
Program introduction:
NO.1 Function description:
EC2908-E148 single key touch IC chip Working voltage DC=12V (through voltage regulator LDO-3.3V) Power-on does not work, the main light has 2 LED outputs, 1 cool white, 1 warm white, touch button control, the initial brightness is 100%. TP1 light mode conversion key, press the first time, the cool white light will be on. Press the 2nd time, the warm white light is on. Press the 3rd time, the cool white + warm white light is on. Press the 4th button, off, and cycle in turn. Long press the stepless dimming, one long press to adjust, one long press to increase, and so on. With uninterrupted power brightness memory function: restart after power off, the initial brightness is 100% indicator light Two blue and white indicator lights: the main light does not work when power on, the white indicator light is on, the white indicator light is off after the main light is on, the blue indicator light is in the same direction as the main light, the main light is on and the blue indicator light is on, the main light is off and the blue indicator light is off. When short press to switch the color temperature of the main light, the indicator light turns white when you press the touch key, and turns blue when you release it.
NO.2 Electrical performance (main control parameters) (VDD=3.0V, GND=0, Ta=25℃,) PARAMETER SYMBOL MIN TYP MAX UNIT CONDITIONS Operating voltage VDD 2.2 3.0 5.0 V Operating current IOP 1.5 mA Quiescent current ISTB 5 uA VDD=5.0V Drive current low level output IOL 21 mA VDD=5.0V,VOL=0.6V Drive current high level output IOH 3.5 mA VDD=5.0V, VOH=VDD-0.6V Over VDD limit current IVDDmax 50 mA Over GND limit current IGNDmax 50 mA Working temperature TA -10 25 70 ℃ Storage temperature Tstg -40 25 150 ℃
NO.3 Release Notes Version Date Description EC2908-E148 2020-4-10 Single button touch stepless dimming Shenzhen Lijing Microelectronics Technology Co., Ltd. focuses on single-button touch IC, touch dimming and color temperature IC, LED mirror touch dimming IC, LED single-button touch chip, and touch IC chip solution development.
Performance parameters:
Industry Classification : Consumer Electronics Development Platform : Holtek Delivery form : IOT system Performance parameters: Model: EC2908-E148, Brand: ELITECHIP, Working voltage: 2.2-5.0V, Package: SOP-8, Working temperature: -10~70℃, Packaging: Tube Application scene: makeup mirror, touch switch, touch dimmer mirror.
