TPS2042BD

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 70mΩ 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.

• 70mΩ 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