Texas Instruments TPS2085D

4-ch, 5.5-V, 0.7-A, 80-mΩ, load switch with active high enables 16-SOIC 0 to 85

Current Limit SW 4-IN 4-OUT 2.7V to 5.5V 0.5A 16-Pin SOIC Tube

IC, QUAD POWER DIST SW 16-SOIC; Power Load Switch Type:High Side; Input Voltage:5.5V; Current Limit:1A; On State Resistance:0.08ohm; Thermal Protection:Yes; On / Enable Input Polarity:Active High; Power Dissipation Pd:1.123W; No. of Outputs:4; Internal Switch:Yes; Distribution Switch Case Style:SOIC; No. of Pins:16; Operating Temperature Range:0°C to +85°C; SVHC:No SVHC (20-Jun-2011); Base Number:2085; Input Voltage Max:5.5V; On Resistance Rds(on):0.08ohm; Output Current Max:500mA; Package / Case:SOIC; Power Dissipation Pd:1.123W; Protection Type:Yes; Supply Voltage Max:5.5V; Supply Voltage Min:2.7V; Termination Type:SMD

The TPS2080, TPS2081, and TPS2082 dual and the TPS2085, TPS2086 and TPS2087 quad power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. TheTPS208x devices incorporate 80-m\Omega N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in asingle 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, the TPS208x limits the output current to a safe level by switching into a constant-current mode, pulling the over current (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. The TPS208x devices are designed to current limit at 1.0-A load.