SJT8003 / SJT8005
- 5 个电容式触摸感应按键
- 工作电压：2.5V～5.5V
- 功率消耗：VDD=5V 无负载工作电流 550uA，待机电流 6uA
- 按键灵敏度可由外部电容自由调节
- 提供一对一、BCD 编码、 高阻(OD)等输出方式和 I²C 通讯方式
- 触摸生效“哔”声提醒功能
- 环境温度湿度变化自动适应功能
- 抗电源干扰和手机干扰能力强
one to one diagragm sch
SJT8005DH：上电初始化，输出端为低电平，触摸生效时输出高电平； SJT8005DL：上电初始化，输出端为高电平，触摸生效时输出低电平； SJT8005DS：上电初始化，输出端为低电平，触摸一次输出端的状态翻转一次。 SJT8005DL_OD：上电初始化，输出端为高阻状态，触摸生效时输出低电平。
应用范围：
家用电器、消费类电子产品、安防和楼宇产品、医疗保健产品、手持装置、工业控制、照明产品、玩具以及计算机周边等等。用于取代薄膜、按钮以及普通开关。
control
Use a special light tuning IC SJT83, supports two ways of controlling:
- press once to turn ON, hold for speedless tuning light from low to high, press once to turn off
- press once to turn ON, hold for speedless tuning light from high to low, press once to turn off
- press once to turn ON, press each three times for low, medium, high light intensity, press once to turn off
- press once to turn ON, press each three times for low, medium, high light intensity, press once to turn off
Chip function simply based on mosfet output control, it is a pre-programmed chip.
| pin 1 | pin 8 | pin 6 | function | |
|---|---|---|---|---|
| + | + | + | stepless speed control | Sudden change, single-button single-output stepless dimming without brightness memory |
| - | + | + | stepless speed control w/mem | Sudden change, single-button single-output stepless dimming with brightness memory |
| + | - | - | three phase control L-to-H | LED three-stage dimming, sequence: low brightness-medium brightness-high brightness-OFF |
| - | - | - | three phase control H-to-L | LED three-stage dimming, sequence: high brightness-medium brightness-low brightness-OFF |
board
