RT6251BHGQW

Voltage Regulators - DC DC Switching Regulators Overview

The RT6251BHGQW is a synchronous step-down DC-DC converter manufactured by Richtek USA Inc. It operates with an input voltage range of 4.5V to 28V and delivers up to 3A of output current. The device features adjustable switching frequencies between 200kHz and 1.2MHz, enabling optimization for efficiency or component size. It provides a positive adjustable output voltage with high accuracy. Integrated protections include over-current, over-voltage, and thermal shutdown. The component is housed in a compact WDFN-6 package suitable for space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology for high conversion efficiency
• Adjustable switching frequency from 200kHz to 1.2MHz
• Integrated comprehensive protection mechanisms
• Compact surface-mount packaging

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial equipment power supplies
• Consumer electronics battery charging
• Portable devices requiring efficient voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'QW' corresponds to the required tape and reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ESD handling protocols are followed during assembly due to moisture sensitivity classification. Cross-reference pinouts with the latest datasheet revision to avoid compatibility issues with existing PCB layouts.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltages exceed standard 5V or 12V rails, requiring regulation down to lower logic levels. The adjustable frequency feature allows designers to minimize external inductor and capacitor sizes while maintaining acceptable ripple currents. Evaluate thermal performance under maximum load conditions, as the WDFN-6 package relies on PCB copper area for heat dissipation. Ensure the required output current does not exceed the 3A limit under all operating temperature ranges.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to Richtek's portfolio of synchronous step-down converters designed for general-purpose power management. It addresses applications needing wide input voltage tolerance and flexible frequency selection. The series supports various industries including industrial, communications, and consumer electronics where space and efficiency are critical constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes may include other 3A synchronous buck converters with similar input ranges and adjustable frequencies. Verify pin-to-pin compatibility if replacing in existing designs. Check if alternative parts offer improved thermal characteristics or different protection thresholds suitable for the specific application environment.