The TPS2042BD is a Dual Current Limited Power Distribution Switch intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. This device incorporates 70mR N-channel MOSFET power switches for power-distribution systems that require multiple power switches. 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 times and fall times to minimize current surges during switching. The charge pump requires no external components. When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by switching into a constant-current mode, pulling the over-current logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage.
● 70mR High-side MOSFET
● 500mA Continuous current
● Thermal and short-circuit protection
● Accurate current limit (0.75A minimum, 1.25A maximum)
● 2.7 to 5.5V Operating range
● 0.6ms Typical rise time
● Under-voltage lockout
● Deglitched fault report (OC)
● No OC glitch during power up
● 1µA Maximum standby supply current
● Green product and no Sb/Br
●This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
