The TPS255x and TPS255x-1 power-distribution switches are intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered and provide up to 1.5 A of continuous load current. These devices offer a programmable current-limit threshold between 75 mA and 1.7 A (typical) through 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 turnon and turnoff.

TPS255x devices limit the output current to a safe level by using a constant-current mode when the output load exceeds the current-limit threshold. TPS255x-1 devices provide circuit breaker functionality by latching off the power switch during overcurrent or reverse-voltage situations. 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 overcurrent and reverse-voltage conditions.

• Up to 1.5-A Maximum Load Current
• ±6% Current-Limit Accuracy at 1.7 A (Typical)
• Meets USB Current-Limiting Requirements
• Backwards Compatible With TPS2550 and TPS2551
• Adjustable Current Limit: 75 mA to 1700 mA (Typical)
• Constant-Current (TPS255x) and Latch-Off (TPS255x-1) Versions
• Fast Overcurrent Response - 2 μs (Typical)
• 85-mΩ High-Side MOSFET (DBV Package)
• Reverse Input-Output Voltage Protection
• Operating Range: 2.5 V to 6.5 V
• Built-In Soft Start
• 15-kV ESD Protection per IEC 61000-4-2 (With External Capacitance)
• UL Listed – File No. E169910 and NEMKO IEC60950-1-am1 ed2.0
• See the TI Switch Portfolio

• Vin (Min) (V)
• 2.5
• Vin (Max) (V)
• 6.5
• Continuous current (Max) (A)
• 1.5
• Current limit (A)
• 0.075 to 1.7
• Product type
• Adjustable current limit, Power switch
• Operating temperature range (C)
• -40 to 125
• Enable
• Active High
• Number of switches
• 1
• Rating
• Catalog

TPS2553-1的完整型号有：TPS2553DBVR-1、TPS2553DBVT-1、TPS2553DRVR-1、TPS2553DRVT-1，以下是这些产品的关键参数及官网采购报价：

TPS2553DBVR-1，工作温度：-40 to 125，封装：SOT-23 (DBV)-6，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS2553DBVR-1的批量USD价格：.278（1000+）

TPS2553DBVT-1，工作温度：-40 to 125，封装：SOT-23 (DBV)-6，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS2553DBVT-1的批量USD价格：.334（1000+）

TPS2553DRVR-1，工作温度：-40 to 125，封装：WSON (DRV)-6，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS2553DRVR-1的批量USD价格：.278（1000+）

TPS2553DRVT-1，工作温度：-40 to 125，封装：WSON (DRV)-6，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS2553DRVT-1的批量USD价格：.334（1000+）

TPS2553DBV1EVM-364 — 具有用于 TPS2553DBV1EVM-364 的可调节限流评估模块的配电开关

TPS2552/3DBVEVM 和 TPS2552/3DRVEVM 是评估模块 (EVM)，适用于德州仪器 (TI) 的具有可调节限流的配电开关系列。这些 EVM 在 2.5V 至 6.5V 的电压范围内工作。板载跳线将输出限流设置为 0.5A 或 1A。测试点允许方便快捷地访问所有关键节点电压。

TPS2553DRV1EVM-364 — 具有用于 TPS2553DRV1EVM-364 的可调节限流评估模块的配电开关

TPS2552/3DBVEVM 和 TPS2552/3DRVEVM 是评估模块 (EVM)，适用于德州仪器 (TI) 的具有可调节限流的配电开关系列。这些 EVM 在 2.5V 至 6.5V 的电压范围内工作。板载跳线将输出限流设置为 0.5A 或 1A。测试点允许方便快捷地访问所有关键节点电压。