TPS2042DR

产品概述

The TPS2042DR is a dual Power Distribution Switch intended for applications where heavy capacitive loads and short circuits are likely to be encountered. Each switch is controlled by a logic enable that is compatible with 5 and 3V logic. 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 2.7V. When the output load exceeds the current-limit threshold or a short is present, the TPS2042 limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) 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.

• 135mR Maximum (5V input) high-side MOSFET switch
• 500mA Continuous current per channel
• Short-circuit protection
• Independent thermal protection
• Overcurrent logic output
• Logic-level enable input
• 2.5ms Typical rise time
• Undervoltage lockout
• 10uA Maximum standby supply current
• Bidirectional switch

应用

电源管理, 电机驱动与控制