STUSB1602 datasheet(18/55 Pages) STMICROELECTRONICS

18 / 55 page

Features description

STUSB1602

18/55

DocID028319 Rev 2

3.4.6

VCONN power switches

Features

The STUSB1602 integrates two current limited high-side power switches with protection

that tolerates high voltage up to 22 V on the CC pins.

Each VCONN power switch presents the following features:

•

Soft-start to limit inrush current

•

Constant current mode overcurrent protection

•

Adjustable current limit

•

Thermal protection

•

Undervoltage and overvoltage protection

•

Reverse current and reverse voltage protection

Figure 4. VCONN to CC1 and CC2 power switch protection

Current limit programming

The current limit can be set within the range 100 mA to 600 mA by a step of 50 mA. The

default current limit is programmed through NVM programming (see Section 6: Start-up

configuration) and can be changed by software through the I2C interface. At power-on or

after a reset, the current limit takes the default value preset in the NVM.

Fault management

The table below summarizes the different fault conditions that could occur during operation

of the switch and the associated responses. An I2C alert is generated when a fault condition

happens.

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