TPS2112PWRG4

Overview

The TPS2112PWRG4 is an autoswitching power multiplexer manufactured by Texas Instruments, housed in an 8-pin TSSOP package. It features two inputs and a single output, supporting an input voltage range of 2.8 V to 5.5 V. The device delivers a maximum output current of 750 mA with a typical on-resistance of 120 mΩ per channel. Current limiting is adjustable from 310 mA to 750 mA. Operational characteristics include a maximum turn-on time of 500 µs and a maximum turn-off time of 3 ms. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Autoswitching logic automatically selects the active input source based on voltage levels without external control signals.
• Integrated current limiting protects downstream loads from overcurrent conditions across a configurable range.
• Low on-resistance minimizes power loss and voltage drop during conduction for efficient power distribution.

Applications

• Battery backup switching in portable electronic devices
• Dual-source power management for mobile equipment
• Hot-swappable power input selection systems

Procurement Notes

Verify the G4 suffix indicates compliance with RoHS standards and confirms lead-free manufacturing processes as per Texas Instruments specifications. Ensure the TSSOP-8 package matches the design footprint requirements. Confirm the operating temperature range aligns with environmental constraints. Validate that the current limit settings meet circuit protection needs before finalizing procurement.

Selection Notes

Select this component when automatic source selection between two power rails is required without complex control logic. The 750 mA output capacity suits moderate load applications. Consider the 120 mΩ on-resistance for efficiency calculations. The wide input voltage range accommodates various battery and supply types. Ensure the 8-TSSOP package fits the available PCB space.

Part Context

The TPS2112 series includes variants like the TPS2112A and TPS2113, differing primarily in on-resistance and current capabilities. The TPS2112PWRG4 belongs to the standard TPS2112 family, offering balanced performance for general-purpose power muxing. It complements other Texas Instruments PMIC solutions for integrated power management designs.

Replacement Considerations

The TPS2112APWR is a direct functional equivalent within the same series. Verify pinout compatibility and electrical parameters such as on-resistance and current limits when substituting. Ensure the replacement part supports the required voltage range and package type for seamless integration.