8.4 Device Functional Modes

Figure 15. Functional Modes

• INITIALIZATION: The device enters into INITIALIZATION mode when EN = H. In this mode, all the registers are reset. Entry can also be from any state, if the RESET (register) = FFh or UVLO is active.
• NORMAL: The device enters the NORMAL mode when Chip_EN (register) = 1. I_CC is 10 mA (typical).
• POWER SAVE: The device automatically enters the POWER SAVE mode when Power_Save_EN (register) = 1 and all the LEDs are off for a duration of >30 ms. In POWER SAVE mode, analog blocks are disabled to minimize power consumption, but the registers retain the data and keep it available via I²C. I_CC is 12 µA (maximum). In case of any I²C command to this device, it goes back to the NORMAL mode.
• SHUTDOWN: The device enters into SHUTDOWN mode from all states on V_CC power up or when EN = L. I_CC is < 1 µA (max).
• STANDBY: The device enters the STANDBY mode when Chip_EN (register bit) = 0. In this mode, all the OUTx are shut down, but the registers retain the data and keep it available via I²C. STANDBY is the low-power-consumption mode, when all circuit functions are disabled. I_CC is 10 µA (maximum).
• THERMAL SHUTDOWN: The device automatically enters the THERMAL SHUTDOWN mode when the junction temperature exceeds 160°C (typical). In this mode, all the OUTx outputs are shut down. If the junction temperature decreases below 145°C (typical), the device returns to the NORMAL mode.