2-ch, 1A loading, 1.6A ILIMIT, 2.7-5.5V, 70mΩ USB power switch, active-low

The TPS206xA power-distribution

switches are intended for applications where heavy capacitive loads and

short-circuits are likely to be encountered. The TPS206xA family is pin-for-pin

compatible with the TPS206x family with a tighter overcurrent tolerance. This family

of devices incorporates two 70mΩ N-channel MOSFET power switches for

power-distribution systems that require multiple power switches in a single package.

Each switch is controlled by a logic enable input. Gate drive is provided by an

internal charge pump designed to control the power-switch rise and fall times to

minimize current surges during switching. The charge pump requires no external

components and allows operation from supplies as low as 2.7V.

Each device limits the output current

to a safe level by switching into a constant-current mode when the output load

exceeds the current-limit threshold or a short is present. Individual channels

indicate the presence of an overcurrent condition by asserting its corresponding

OCx output (active low). Thermal protection circuitry

disables the device during overcurrent or short-circuit events to prevent permanent

damage. The device recovers from thermal shutdown automatically once the device has

cooled sufficiently. The device provides undervoltage lockout to disable the device

until the input voltage rises above 2.0V. The TPS206xA is designed to current limit

at 1.6A typically per channel.