TPS2556数据手册集成电路（IC）的配电开关负载驱动器规格书PDF

描述 Description

The TPS255x power-distribution switch is intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered. These devices offer a programmable current-limit threshold between 500 mA and 5 A (typical) through an external resistor. The power-switch rise and fall times are controlled to minimize current surges during turnon and turnoff.

TPS255x devices limit the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. The FAULT logic output asserts low during overcurrent and overtemperature conditions.

特性 Features

• Meets USB Current-Limiting Requirements
• Adjustable Current Limit, 500 mA to 5 A (Typical)
• ±6.5% Current-Limit Accuracy at 4.5 A
• Fast Overcurrent Response: 3.5-µs (Typical)
• 22-mΩ High-Side MOSFET
• Operating Voltage: 2.5 V to 6.5 V
• 2-µA Maximum Standby Supply Current
• Built-in Soft Start
• 15-kV and 8-kV System-Level ESD Capable
• UL Listed: File No. E169910 and CB IEC60950-1-am2 ed2.0