RT2702GQW

Overview

The RT2702GQW is a synchronous step-down DC-DC switching controller manufactured by Richtek USA Inc. It operates with an input voltage range of 4.5V to 19V and delivers a maximum output current of 4mA. The device features a fixed switching frequency of 500kHz and supports adjustable output voltages. Packaged in a 16-WQFN (3x3) surface-mount format, it functions as a single-output buck converter. The component is rated for operation within a junction temperature range of -40°C to +125°C.

Feature Summary

• Integrates remote sense capability for improved load regulation accuracy
• Includes comprehensive protection features such as over-current limiting and soft-start functionality
• Supports phase control for multi-phase synchronization applications

Applications

• Portable electronic devices requiring efficient power management
• Industrial equipment utilizing low-power logic supplies
• Consumer electronics with strict size constraints

Procurement Notes

Verify the specific ordering suffix to ensure correct packaging configuration, such as tape-and-reel or cut-tape options. Confirm that the selected variant matches the required moisture sensitivity level and RoHS compliance status for your assembly process. Cross-reference the manufacturer part number with distributor databases to validate authenticity and current availability status before finalizing procurement orders.

Selection Notes

Select this controller when a compact solution is needed for low-current buck conversion tasks. Ensure the external inductor and capacitor values are calculated to support the 500kHz switching frequency. Verify that the remote sense pins can be routed effectively to the load point to maintain voltage accuracy. Check thermal requirements against the WQFN package's heat dissipation capabilities.

Part Context

This component belongs to the RT2702 family of switching controllers designed for high-efficiency power conversion. It is categorized under PMIC DC-DC switching controllers. The GQW suffix indicates the specific package type and environmental compliance. It serves as a core power management element in systems requiring stable, regulated voltage rails from higher input sources.

Replacement Considerations

Check for direct cross-reference part numbers provided by Richtek or authorized distributors. Ensure any substitute maintains the same 16-WQFN footprint and pinout compatibility. Verify that alternative components support the required 4.5V to 19V input range and 500kHz frequency.