The TPS203x family of power distribution switches is intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices are 50-m N-channel MOSFET high-side power switches. The switch is controlled by a logic enable compatible with 5-V logic and 3-V logic. 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, the TPS203x limits the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OC) 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.

The TPS203x devices differ only in short-circuit current threshold. The TPS2030 limits at 0.3-A load, the TPS2031 at 0.9-A load, the TPS2032 at 1.5-A load, the TPS2033 at 2.2-A load, and the TPS2034 at 3-A load (see Available Options). The TPS203x is available in an 8-pin small-outline integrated-circuit (SOIC) package and in an 8-pin dual-in-line (DIP) package and operates over a junction temperature range of -40°C to 125°C.

• 33-m (5-V Input) High-Side MOSFET Switch
• Short-Circuit and Thermal Protection
• Overcurrent Logic Output
• Operating Range: 2.7 V to 5.5 V
• Logic-Level Enable Input
• Typical Rise Time: 6.1 ms
• Undervoltage Lockout
• Maximum Standby Supply Current: 10 μA
• No Drain-Source Back-Gate Diode
• Available in 8-pin SOIC and PDIP Packages
• Ambient Temperature Range, -40°C to 85°C
• 2-kV Human-Body-Model, 200-V Machine-Model ESD Protection
• UL Listed— File No. E169910

• Vin (Min) (V)
• 2.7
• Vin (Max) (V)
• 5.5
• Continuous current (Max) (A)
• 2
• Current limit (A)
• 3
• Product type
• Fixed current limit, Power switch
• Operating temperature range (C)
• -40 to 125, -40 to 85
• Enable
• Active High
• Number of switches
• 1
• Rating
• Catalog

TPS2034的完整型号有：TPS2034D、TPS2034DR、TPS2034P，以下是这些产品的关键参数及官网采购报价：

TPS2034D，工作温度：-40 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TPS2034D的批量USD价格：.906（1000+）

TPS2034DR，工作温度：-40 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TPS2034DR的批量USD价格：.761（1000+）

TPS2034P，工作温度：-40 to 85，封装：PDIP (P)-8，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网TPS2034P的批量USD价格：.87（1000+）

TPS2034D，工作温度：-40 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TPS2034D的批量USD价格：.906（1000+）

TPS2034DR，工作温度：-40 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TPS2034DR的批量USD价格：.761（1000+）

TPS2034P，工作温度：-40 to 85，封装：PDIP (P)-8，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网TPS2034P的批量USD价格：.87（1000+）