40 lines
778 B
Plaintext
Executable file
40 lines
778 B
Plaintext
Executable file
This is a introduction for flashlight chip LM3644
|
|
|
|
[Scope]
|
|
- Two channel for two LEDs
|
|
- Two silicon revision
|
|
* LM3644
|
|
* LM3644TT (Douple torch current and flash timeout)
|
|
|
|
|
|
[Hardware Interface]
|
|
- I2C
|
|
* For general control
|
|
* Slave address 0x63
|
|
|
|
- GPIO
|
|
* For enable/disable chip
|
|
|
|
|
|
[Limit]
|
|
- Channel couple:
|
|
* Torch/Strobe
|
|
|
|
- Channel decouple:
|
|
* Enable/Disable
|
|
* Brightness level
|
|
|
|
- Torch Mode
|
|
* Step current: 1.4 mA (2.8 mA for LM3644TT)
|
|
* Min currnet: 0.977 mA (1.954 mA for LM3644TT)
|
|
* Max current: 179 mA (360 mA for LM3644TT)
|
|
|
|
- Strobe Mode
|
|
* Step current: 11.725 mA
|
|
* Min currnet: 10.9 mA
|
|
* Max current: 1500 mA
|
|
* Max current for two channel: 1500 mA
|
|
* Min protected timeout: 10 ms (40 ms for LM3644TT)
|
|
* Max protected timeout: 400 ms (1600 ms for LM3644TT)
|
|
|