The TPS2045A through TPS2048A and TPS2055A through TPS2058A power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered.

These devices incorporate 80-m N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by an independent 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 and allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) 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. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present. These power-distribution switches are designed to current limit at 0.5 A.

• 80-m High-Side MOSFET Switch
• 250 mA Continuous Current Per Channel
• Independent Thermal and Short-Circuit Protection With Overcurrent Logic Output
• Operating Range: 2.7-V to 5.5-V
• CMOS- and TTL-Compatible Enable Inputs
• 2.5-ms Typical Rise Time
• Undervoltage Lockout
• 10 μA Maximum Standby Supply Current for Single and Dual (20 μA for Triple and Quad)
• Bidirectional Switch
• Ambient Temperature Range, 0°C to 85°C
• ESD Protection

• Vin (Min) (V)
• 2.7
• Vin (Max) (V)
• 5.5
• Continuous current (Max) (A)
• 0.25
• Current limit (A)
• 0.5
• Product type
• Fixed current limit, Power switch
• Operating temperature range (C)
• 0 to 125
• Enable
• Active High
• Number of switches
• 1
• Rating
• Catalog

TPS2055A的完整型号有：TPS2055AD、TPS2055ADR，以下是这些产品的关键参数及官网采购报价：

TPS2055AD，工作温度：0 to 125，封装：SOIC (D)-8，包装数量MPQ：75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TPS2055AD的批量USD价格：.528（1000+）

TPS2055ADR，工作温度：0 to 125，封装：SOIC (D)-8，包装数量MPQ：2500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TPS2055ADR的批量USD价格：.44（1000+）

TPS2055AEVM-290 — TPS2055AEVM 评估模块

The TPS2055AEVM-290 is an evaluation module for the Texas Instruments family of single-channel, current limited, power distribution switches. These EVMs operate over a 2.7V to 5.5V range and provide a continuous output current of up to 2A. Test points provide convenient access (...)