TPS2552DBVT

产品概述

The TPS2552DBVT is an Adjustable Active Low Current-limited Power Distribution Switch intended for applications where precision current limiting is required or heavy capacitive loads and short-circuits are encountered and provide up to 1.5A of continuous load current. This constant current device offers a programmable current-limit threshold between 75mA and 1.7A (typical) via an external resistor. Current-limit accuracy as tight as ±6% can be achieved at the higher current-limit settings. The power-switch rise and fall times are controlled to minimize current surges during turn on/off. TPS2552 device limit the output current to a safe level by using a constant-current mode when the output load exceeds the current-limit threshold. An internal reverse-voltage comparator disables the power-switch when the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT output asserts low during over-current and reverse-voltage conditions.

• Up to 1.5A maximum load current
• ±6% Current-limit accuracy at 1.7A (typical)
• Meets USB current-limiting requirements
• Backwards compatible with TPS2550/51
• 75 to 1300mA Typical adjustable current limit
• Constant-current device
• Fast over-current response (2µs typical)
• 85mR High-side MOSFET
• Reverse input-output voltage protection
• 2.5 to 6.5V Operating range

• Built-in soft-start
• Green product and no Sb/Br

应用

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