TPS2051BDBVT

Power Distribution Switches, Load Drivers Overview

The TPS2051BDBVT is a single-channel, current-limited power distribution switch manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 5.5 V and features an active-high enable input. The device provides a typical output current of 500 mA with a fixed current limit threshold of 900 mA. It utilizes a SOT-23 surface-mount package with five pins. The component supports an operating temperature range from -40°C to 125°C and includes internal circuitry for soft-start and foldback current limiting to protect against overload conditions.

Power Distribution Switches, Load Drivers Feature Summary

• Integrates high-side MOSFET with active-high enable control for precise load management
• Provides fixed current limiting at 900 mA to prevent damage during short-circuit or overload events
• Features controlled rise and fall times to minimize inrush current during switching operations
• Includes thermal shutdown protection to ensure safe operation under extreme temperature conditions

Power Distribution Switches, Load Drivers Applications

• USB port protection in personal computers and hubs
• Power distribution in notebook and desktop systems
• Overload protection for peripheral devices
• Hot-swappable bus applications requiring controlled turn-on

Power Distribution Switches, Load Drivers Procurement Notes

Verify the specific suffix 'V' indicates tape-and-reel packaging when sourcing components. Confirm that the device meets RoHS standards if environmental compliance is required for the assembly process. Ensure the selected variant matches the required operating temperature range, as some versions may be limited to commercial temperatures while others support extended ranges up to 125°C. Cross-reference the datasheet revision to confirm pinout and electrical characteristics align with design specifications.

Power Distribution Switches, Load Drivers Selection Notes

Select this component for applications requiring a single-channel high-side switch with integrated current limiting. It is suitable for 5V systems where soft-start capabilities are necessary to reduce stress on the power source. Consider the SOT-23 package size for space-constrained designs. Evaluate the 900 mA current limit against the maximum load requirements to ensure adequate margin without nuisance tripping during startup transients.

Power Distribution Switches, Load Drivers Part Context

The TPS2051 series belongs to Texas Instruments' family of power distribution switches designed for USB and general-purpose load switching. These devices combine a high-side N-channel MOSFET with control logic, protection circuits, and status indicators. The TPS2051BDBVT specifically refers to the B-grade version in a SOT-23-5 reel package, offering a balance of performance and compactness for consumer electronics and industrial control applications.

Power Distribution Switches, Load Drivers Replacement Considerations

Public confirmed substitute part numbers include TPS2051BDBVRG4 and TPS2051BDGV.