The TPS2045A through TPS2048A and TPS2055A through TPS2058A power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered.
●These devices incorporate 80-m N-channel MOSFET high-side power switches for power-distribution systems that require multiple power 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.
●When the output load exceeds the current-limit threshold or a short is present, these devices 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. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present. These power-distribution switches are designed to current limit at 0.5 A.
● 80-m High-Side MOSFET Switch
● 250 mA Continuous Current Per Channel
● Independent Thermal and Short-Circuit Protection With Overcurrent Logic Output
● Operating Range: 2.7-V to 5.5-V
● CMOS- and TTL-Compatible Enable Inputs
● 2.5-ms Typical Rise Time
● Undervoltage Lockout
● 10 µA Maximum Standby Supply Current for Single and Dual (20 µA for Triple and Quad)
● Bidirectional Switch
● Ambient Temperature Range, 0°C to 85°C
● ESD Protection
