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I was unsuccessful in using I2C to program the LED.

Category: Hardware
Product Number: LT3966


I have an EVK DC2630A, and I intend to use I2C to program voltage to control LED brightness.

The procedures are:

0. SW1 output level HIGH

1. MCU send 0xA0, 0x11, 0x01, 0x0D

2. MCU send 0xA0, 0x12, 0xE0, 0x9B

3. MCU send 0xA0, 0x13, 0x00, 0x20

4. SW1 output still High -> expect Low

PS. I tried to read the register value back to the MCU. The value read was correct, meaning the desired value was successfully written to the register. However, it is not functioning as expected.

Please help check whether the above procedure has any mistakes