L6982C50DR

Voltage Regulators - DC DC Switching Regulators Overview

The L6982C50DR is a monolithic step-down switching regulator from STMicroelectronics, designed for high-efficiency power conversion in portable applications. It integrates a 1.5A switch and operates with an input voltage range of 2.7V to 5.5V. The device provides a fixed 5.0V output with tight load regulation. It features a wide switching frequency selection via an external resistor, ranging from 300kHz to 1.5MHz, allowing optimization between efficiency and component size. Key protections include overcurrent protection, thermal shutdown, and undervoltage lockout.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated 1.5A power switch for compact solution design
• Wide input voltage range suitable for single-cell lithium battery operation
• Adjustable switching frequency to optimize external component size
• Comprehensive protection mechanisms including thermal shutdown and current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics powered by single-cell lithium batteries
• Low-voltage digital logic supply generation
• RF module power supplies requiring low noise
• Embedded systems with strict space constraints

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'DR' indicates the tape-and-reel packaging format when ordering. Confirm that the fixed 5.0V output variant matches the system requirement, as other output voltages are available in the same family. Ensure compatibility with the required switching frequency setting using the appropriate external resistor value as defined in the official datasheet.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from a single-cell lithium source. Consider the external resistor needed for the desired switching frequency, which impacts inductor and capacitor selection. Evaluate the thermal performance based on the expected load current and ambient conditions, as the device includes thermal shutdown protection.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the L6982 family of synchronous step-down regulators. It is distinct from non-synchronous variants or adjustable output versions within the same series. The device is manufactured using ST's proprietary BCD process technology, ensuring high reliability and integration density for mobile phone and PDA applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements may include other L6982 variants with different output voltages or switching frequencies, provided the pinout remains compatible. Verify electrical specifications such as maximum input voltage and current limits against the original design requirements before substitution.