Description
The ST2054 power distribution switches is intended for application where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 80mΩ N-channel MOSFET high-side power switches for power-distribution systems that require multiple powers switches in a single package. Each switch is controlled by an independent logic enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.

FEATUREs
■ 80mΩ high-side MOSFET switch
■ 500mA continuos current per channel
■ independent thermal and short-circuit protection with overcurrent logic output
■ Operating range from 2.7V to 5.5V
■ CMOS- and TTL-compatible enable inputs
■ 10ms OC_N fault blanking
■ 2.5ms typical rise time
■ Under voltage lock out
■ 20µA maximum standby supply current
■ Ambient temperature range, -40°C to 85°C
■ ESD protection