STA500

Overview

The STA500 is a monolithic quad half-bridge stage manufactured in Multipower BCD Technology. It functions as a dual bridge or, with the CONFIG pin connected to Vdd, as a single bridge with double current capability or a half-bridge with half current capability. The device features a minimum input output pulse width distortion and a 200mΩ RdsON complementary DMOS output stage. It includes thermal protection, a thermal warning output, overvoltage and undervoltage protection, and CMOS compatible logic inputs.

Feature Summary

• Configurable topology supporting dual bridge, single bridge with double current, or half-bridge modes via the CONFIG pin.

Applications

Procurement Notes

Verify the specific datasheet revision and package variant before procurement. Confirm that the CONFIG pin configuration matches the intended bridge mode for the target application. Ensure supply voltage levels remain within the specified limits to activate the built-in overvoltage and undervoltage protection mechanisms correctly.

Selection Notes

Select this component when a flexible power stage configuration is required from a single IC. The ability to reconfigure between dual, single, and half-bridge modes allows for design adaptability. Consider the 200mΩ on-resistance for efficiency calculations and ensure the thermal management solution accommodates the integrated thermal protection features.

Part Context

The STA500 belongs to STMicroelectronics' family of power half-bridge drivers. It utilizes Multipower BCD technology to integrate high-voltage DMOS outputs with control logic. This integration simplifies the design of audio amplifiers and motor drivers by reducing the component count compared to discrete solutions.

Replacement Considerations

Check for direct replacements such as the STA501A or STA508 if higher voltage ratings or different current capabilities are needed. Verify pin compatibility and electrical specifications against the original design requirements before substituting.