TPS2051BDBVR

TEXAS INSTRUMENTS  TPS2051BDBVR.  电源分配开关, 限流, 高压侧, 高电平有效, 1路输出, 5.5V, 1A, SOT-23-5

The is a Single Current Limited Power Distribution Switch intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. This device incorporates 70mR N-channel MOSFET power switches for power-distribution systems that require multiple power switches. 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. 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 over-current 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.

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70mR High-side MOSFET

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500mA Continuous current

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Thermal and short-circuit protection

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Accurate current limit 0.75A minimum, 1.25A maximum

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2.7 to 5.5V Operating range

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0.6ms Typical rise time

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Under-voltage lockout

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Deglitched fault report OC

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No OC glitch during power up

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1µA Maximum standby supply current

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Green product and no Sb/Br

This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.