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