The TPS20xxB power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporates 70-mΩ N-channel MOSFET power switches for power-distribution systems that require multiple power switches in a single package. 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 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, the device limits 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 that the switch remains off until valid input voltage is present. This power-distribution switch is designed to set current limit at 1 A (typical).
● 70-mΩ High-Side MOSFET
● 500-mA Continuous Current
● Thermal and Short-Circuit Protection
● Accurate Current Limit
●(0.75 A Minimum, 1.25 A Maximum)
● Operating Range: 2.7 V to 5.5 V
● 0.6-ms Typical Rise Time
● Undervoltage Lockout
● Deglitched Fault Report (OC)
● No OC Glitch During Power Up
● Maximum Standby Supply Current:
●1-µA (Single, Dual) or 2-µA (Triple, Quad)
● Ambient Temperature Range: –40°C to 85°C
● UL Recognized, File Number E169910
● Additional UL Recognition for TPS2042B and
●TPS2052B for Ganged Configuration
