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TPS2051BD from TI,Texas Instruments

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TPS2051BD

Manufacturer: TI

Single, Current-Limited, Power-Distribution Switch

Partnumber Manufacturer Quantity Availability
TPS2051BD TI 2534 In Stock

Description and Introduction

Single, Current-Limited, Power-Distribution Switch The TPS2051BD is a power distribution switch manufactured by Texas Instruments (TI). Below are the factual details about its specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 2.7V to 5.5V  
- **Continuous Current Limit:** 0.5A (typical)  
- **On-Resistance (RDS(ON)):** 95mΩ (typical at 5V)  
- **Quiescent Current:** 1µA (typical)  
- **Shutdown Current:** 1µA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** SOIC-8  

### **Descriptions:**
- The TPS2051BD is a single-channel power-distribution switch designed for applications requiring precise current limiting and thermal protection.  
- It integrates a low on-resistance N-channel MOSFET with a charge pump for efficient power switching.  
- The device is commonly used in USB ports, hot-swap circuits, and other power management applications.  

### **Features:**
- **Current Limiting:** Protects the input supply from excessive current.  
- **Thermal Shutdown:** Prevents damage due to overheating.  
- **Fast Overcurrent Response:** Quickly shuts off during fault conditions.  
- **Controlled Rise Time:** Reduces inrush current during turn-on.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the specified voltage range.  
- **Reverse Current Blocking:** Prevents backflow when the output voltage exceeds the input.  

This information is based solely on TI's official documentation for the TPS2051BD.

Application Scenarios & Design Considerations

Single, Current-Limited, Power-Distribution Switch

Alternative Part Number

  • MIC2026-1YM --: Dual-channel high-side power switch with current limiting, functionally similar to the TPS2051B and widely used as a drop-in alternative in USB power distribution designs.
  • AP2553W6-7 --: Single-channel current-limited high-side power switch with enable and fault flag, comparable voltage and current ratings to the TPS2051B.
  • SY6280AAC --: Low-cost current-limited load switch with similar RDS(on) and current limit behavior, suitable replacement for USB port power switching applications.

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