TPS2051C USB Power Distribution Switch

Texas Instruments' single channel, current-limited USB power distribution switch

Texas Instruments' TPS2051C power-distribution switch family is intended for applications such as USB where heavy capacitive loads and short-circuits are likely to be encountered. This family offers multiple devices with fixed current-limit thresholds for applications between 0.5 A and 2 A. The TPS2051C family limits the output current to a safe level by operating in a constant-current mode when the output load exceeds the current-limit threshold. This provides a predictable fault current under all conditions. The fast overload response time eases the burden on the main 5 V supply to provide regulated power when the output is shorted. The power-switch rise and fall times are controlled to minimize current surges during turn-on and turn-off. TPS2051C Datasheet

Features	Applications
Single power switch family Pin for Pin with Existing TI Switch Portfolio Rated currents of 0.5 A, 1 A, 1.5 A, 2 A ±20% accurate, fixed, constant current limit Fast over-current response - 2 µs	USB ports/hubs, laptops, desktops High-definition digital TVs Set top boxes Short-circuit protection

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Texas Instruments Part Number	Digi-Key Part Number	Packaging	Voltage - Input	Package
TPS2051CDBVT	296-29759-2-ND	Tape & Reel	4.5 V ~ 5.5 V	SC-74A, SOT-753
	296-29759-1-ND	Cut Tape
	296-29759-6-ND	Digi-Reel®

Evaluation Module

Texas Instruments Part Number	Digi-Key Part Number	Description
TPS2051CDBVEVM-636	296-30039-ND	The TPS20xxCDBVEVM-636 is an evaluation module (EVM) for the Texas Instruments family of single-channel, current-limited, power distribution switches. This EVM operates over a 4.5 V to 5.5 V range and provides a continuous output current of up to 2 A. Test points provide convenient access to all critical node voltages.