TPS2045

TPS2045, TPS2055 CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES features D 135-mΩ -Maximum (5-V Input) High-Side MOSFET Switch D 250 mA Continuous Current D Short-Circuit and Thermal Protection With Overcurrent Logic Output D Operating Range . . . 2.7-V to 5.5-V D Logic-Level Enable Input D 2.5-ms Typical Rise Time D Undervoltage Lockout D 10 µA Maximum Standby Supply Current D Bidirectional Switch D Available in 8-pin SOIC and PDIP Packages D Ambient Temperature Range, –40°C to 85°C D 2-kV Human-Body-Model, 200-V Machine-Model ESD Protection SLVS182 – APRIL 1999 typical applications D Notebook, Desktop and Palmtop PCs D Monitors, Keyboards, Scanners, and Printers D Digital Cameras, Phones, and PBXs D Hot-Insertion Applications TPS2045 D OR P PACKAGE (TOP VIEW) GND IN IN EN 1 2 3 4 8 OUT 7 OUT 6 OUT 5 OC TPS2055 D OR P PACKAGE (TOP VIEW) GND IN IN EN 1 2 3 4 8 OUT 7 OUT 6 OUT 5 OC description The TPS2045 and TPS2055 power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely. Each of these 135-mΩ N-channel MOSFET high-side power switches is controlled by a logic enable compatible with 5-V and 3-V logic. Gate drive is provided by an internal charge pump that controls 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 ...