L6983IQTR

Voltage Regulators - DC DC Switching Regulators Overview

The L6983IQTR is a high-efficiency, synchronous step-down DC-DC converter from STMicroelectronics. It integrates two N-channel power MOSFETs and operates with an input voltage range of 2.7V to 5.5V. The device delivers up to 3A output current with adjustable output voltages. It features fixed switching frequencies of 1MHz or 2.2MHz, selectable via the FSEL pin. Key protections include overcurrent protection, thermal shutdown, and undervoltage lockout. The component is housed in a compact WLCSP-10 package, suitable for space-constrained portable applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification with dual N-channel MOSFETs for high efficiency
• Fixed internal switching frequencies to minimize external component size
• Comprehensive protection mechanisms including thermal shutdown and overcurrent limiting
• Compact wafer-level chip-scale packaging for minimal footprint

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics such as smartphones and tablets
• Wireless communication modules requiring efficient power regulation
• Battery-powered devices needing stable low-voltage supply rails
• Embedded systems with strict space and efficiency constraints

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (IQTR) matches the required switching frequency option and package variant. Confirm that the ordering code corresponds to the correct tape-and-reel quantity specified by the manufacturer. Ensure compatibility with your PCB layout requirements for the WLCSP-10 package. Cross-reference the datasheet revision date to ensure all latest electrical characteristics are considered during design validation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Choose this component when input voltages remain between 2.7V and 5.5V and output currents up to 3A are needed. Select based on the required switching frequency: 1MHz for lower EMI or 2.2MHz for smaller passive components. Evaluate thermal performance under maximum load conditions due to the small package size. Ensure the desired output voltage range aligns with the internal feedback resistor network capabilities.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to STMicroelectronics' L6983 family of synchronous buck converters. It is designed for mobile applications where power efficiency and board space are critical. The family shares common control logic but varies in switching frequency options and package types. It complements other low-voltage regulators in the portfolio by offering integrated power stages without external diodes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes may include other STMicroelectronics synchronous buck converters within the same voltage and current class. Verify pin-to-pin compatibility if replacing in existing designs. Check equivalent switching frequencies and protection features. Alternative manufacturers may offer similar specifications but require careful evaluation of thermal and electrical parameters.