BD2221G-TR

Power Distribution Switches, Load Drivers Overview

The BD2221G-TR is a single-channel high-side power switch IC designed for USB load switching applications. It operates within a supply voltage range of 2.7 V to 5.5 V and features an active-low control input logic. The device incorporates a low on-resistance Nch MOSFET with a typical value of 160 mΩ, supporting a continuous output load current of 500 mA. Key protection mechanisms include overcurrent detection (OCD) with a limit of 0.5 A to 1.0 A, thermal shutdown (TSD), and under-voltage lockout (UVLO). It utilizes an SSOP-5 package and includes soft-start functionality to manage inrush currents.

Power Distribution Switches, Load Drivers Feature Summary

• Integrates a low on-resistance Nch MOSFET circuit for efficient power distribution
• Includes built-in overcurrent detection and thermal shutdown protection circuits
• Features soft-start capability to control turn-on time and reduce inrush current
• Supports reverse current prevention when the switch is in the OFF state

Power Distribution Switches, Load Drivers Applications

• Power supply lines for memory card slots
• USB port load switching
• Portable electronic device power management
• Battery-powered equipment load distribution

Power Distribution Switches, Load Drivers Procurement Notes

Verify the specific ordering suffix to ensure the correct packaging configuration matches production requirements. Confirm that the component meets all relevant RoHS compliance standards for the target market. Cross-reference the manufacturer datasheet for precise handling and storage conditions to maintain device integrity during assembly processes.

Power Distribution Switches, Load Drivers Selection Notes

Select this component for applications requiring a compact single-channel high-side switch with integrated protection features. The active-low control interface simplifies logic integration with standard microcontrollers. Ensure the load current does not exceed the 500 mA continuous rating and consider the thermal performance within the specified operating temperature range of -40°C to +85°C.

Power Distribution Switches, Load Drivers Part Context

This part belongs to the BD2221G series of small package high-side switch ICs manufactured by ROHM Semiconductor. The series is specifically engineered for USB devices and memory cards, offering a balance of low on-resistance and robust protection features in a minimal footprint suitable for space-constrained portable electronics designs.

Power Distribution Switches, Load Drivers Replacement Considerations

Direct substitutes within the same family include variants such as BD2221G without the TR suffix for different packaging options. Other models in the BD222xG series may offer similar channel counts but differ in current ratings or resistance values; verify electrical parameters before substitution.