![]() ![]() Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. 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. 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 overcurrent ( OCx) logic output low. The charge pump requires no external components and allows operation from supplies as low as 2.7 V. 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. Each switch is controlled by a logic enable input. ![]() These devices incorporates 70-mΩ N-channel MOSFET power switches for power-distribution systems that require multiple power switches in a single package. The TPS20xxB power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered.
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