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TPS2057

3-ch, 0.25A loading, 0.44A ILIMIT, 2.7-5.5V, 80mΩ USB power switch, active-low; ? 135-m -Maximum (5-V Input) High-Side MOSFET Switch\n? 250 mA Continuous Current per Channel\n? Independent Short-Circuit and Thermal Protection With Overcurrent Logic Output\n? Operating Range...2.7-V to 5.5-V\n? Logic-Level Enable Input\n? 2.5-ms Typical Rise Time\n? Undervoltage Lockout \n? 20 uA Maximum Standby Supply Current\n? Bidirectional Switch\n? Available in 16-pin SOIC Package\n? Ambient Temperature Range, -40°C to 85°C\n? 2-kV Human-Body-Model, 200-V Machine-Model ESD Protection\n typical applications \n? Notebook, Desktop and Palmtop PCs\n? Monitors, Keyboards, Scanners, and Printers\n? Digital Cameras, Phones, and PBXs\n? Hot-Insertion Applications;

The TPS2047 and TPS2057 triple power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely. These devices incorporate in single packages three 135-mN-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches. Each switch 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, requiring no external components, 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 TPS2047 and TPS2057 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 in overcurrent 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 TPS2047 and TPS2057 are designed to limit at 0.44-A load. These power-distribution switches are available in 16-pin small-outline integrated circuit (SOIC) packages and operate over an ambient temperature range of -40°C to 85°C.

TPS2057

TRIPLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

TPS2057

POWER DISTRIBUTION SWITCHES

TPS2057

CURRENT-LIMITED, POWER-DISTRIBUTION SWITCHES

TPS2057A

3-ch, 0.25A loading, 0.5A ILIMIT, 2.7-5.5V, 80mΩ USB power switch, active-low; ? 80-m High-Side MOSFET Switch\n? 250 mA Continuous Current Per Channel\n? Independent Thermal and Short-Circuit Protection With Overcurrent Logic Output\n? Operating Range: 2.7-V to 5.5-V\n? CMOS- and TTL-Compatible Enable Inputs\n? 2.5-ms Typical Rise Time\n? Undervoltage Lockout \n? 10 μA Maximum Standby Supply Current for Single and Dual (20 μA for Triple and Quad)\n? Bidirectional Switch\n? Ambient Temperature Range, 0°C to 85°C\n? ESD Protection;

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.

TPS2057A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

TPS2057A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

TPS2057AD

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

TPS2057AD

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

TPS2057ADG4

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES