TPS2105DBVTG4

Overview

The TPS2105DBVTG4 is a power multiplexer IC manufactured by Texas Instruments, designed for dual-input to single-output power distribution. It operates within a supply voltage range of 2.7 V to 5.5 V and supports an output current of up to 500 mA. The device features a maximum on-resistance of 2.4 Ohms, with a maximum turn-on time of 340 µs and a maximum turn-off time of 6 µs. It is housed in a SOT-23-5 surface-mount package and functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates N-channel and P-channel FETs for bidirectional source selection
• Provides low on-resistance for efficient power transfer between sources
• Supports hot-swap operations with controlled switching times

Applications

• Handheld mobile devices requiring multiple power source inputs
• Battery backup systems utilizing primary and secondary power rails
• Portable electronics needing seamless power source transitions

Procurement Notes

Verify the specific suffix 'G4' against official Texas Instruments documentation to confirm compliance with RoHS3 standards and lead-free manufacturing requirements. Ensure the ordering part number matches the exact package variant and temperature grade specified in the datasheet to avoid functional mismatches or environmental non-compliance issues during procurement.

Selection Notes

Select this component when designing circuits that require automatic source selection between two power inputs without manual intervention. Consider the 2.4 Ohm on-resistance and 500 mA current limit to ensure adequate performance for the load. Verify that the 2.7 V minimum operating voltage aligns with the system's battery or rail specifications.

Part Context

This part belongs to the TPS2105 series of OR controllers and ideal diodes. It serves as a compact solution for managing power flow in portable applications where space is limited. The SOT-23-5 package allows for small form factor designs while maintaining robust power handling capabilities for mobile and handheld electronic devices.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official replacement guide or datasheet revision history for qualified alternatives if this specific variant is unavailable.