TPS2557是TI公司的一款精密可调节限流开关产品，TPS2557是精密可调节限流配电开关，本页介绍了TPS2557的产品说明、应用、特性等，并给出了与TPS2557相关的TI元器件型号供参考。
TPS2557 - 精密可调节限流配电开关 - 精密可调节限流开关 - USB电源和充电端口控制器 - TI公司（Texas Instruments，德州仪器）
The TPS2556/57 power-distribution switches are 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 5.0 A (typ) via an external resistor. The power-switch rise and fall times are controlled to minimize current surges during turn on/off.
TPS2556/57 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 over temperature conditions.
- Meets USB Current-Limiting Requirements
- Adjustable Current Limit, 500 mA–5 A (typ)
- +/- 6.5% Current-Limit Accuracy at 4.5 A
- Fast Overcurrent Response - 3.5-µS (typ)
- 22-mΩ High-Side MOSFET
- Operating Range: 2.5 V to 6.5 V
- 2-µA Maximum Standby Supply Current
- Built-in Soft-Start
- 15 kV / 8 kV System-Level ESD Capable
- UL Listed* – File No. E169910
- CB & Nemko Certification*
- *RILIM ≥ 24.9 kΩ (5A maximum)
