RT5797AHGQWA

Voltage Regulators - DC DC Switching Regulators Overview

The RT5797AHGQWA is a synchronous step-down converter from Richtek USA Inc., designed for efficient power management in compact applications. It operates with an input voltage range of 2.7 V to 6 V and delivers a maximum output current of 3 A. The device features a fixed switching frequency of 1 MHz, enabling the use of small external components. Output voltage is adjustable from 600 mV to 3.4 V. It incorporates CMCOT (Constant Mode Constant On-Time) control architecture for fast transient response. The IC is housed in an 8-lead WDFN package (WDFN-8SL) suitable for surface mount technology. Quiescent current is specified at 22 uA, supporting low-power standby modes.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• CMCOT control architecture ensures stable operation and rapid transient response without requiring external compensation networks.
• Integrated synchronous rectification provides high efficiency across wide load ranges by minimizing conduction losses.
• Fixed 1 MHz switching frequency allows for the use of miniature inductors and capacitors, reducing overall solution footprint.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring efficient battery-powered regulation
• Embedded systems with single-supply architectures needing compact DC-DC conversion
• Industrial control modules operating within standard low-voltage logic levels

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as HGQWA against official Richtek documentation to ensure correct packaging and temperature grade. Confirm RoHS compliance status via the manufacturer's declaration. Check moisture sensitivity level (MSL 3) requirements for storage and handling prior to assembly. Ensure compatibility with your PCB layout guidelines for the WDFN-8SL package thermal pad connection.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact, high-efficiency buck converter is needed for inputs up to 6 V. The 3 A output capability suits moderate load applications. The 1 MHz frequency balances size and efficiency. Verify that the required output voltage falls within the 600 mV to 3.4 V adjustable range. Consider the -40°C to +85°C operating temperature range for environmental suitability.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the RT5797 family of synchronous step-down converters. It shares architectural similarities with variants like the RT5797BHGQW but may differ in specific electrical characteristics or packaging details. The family is designed for general-purpose power management in portable and industrial devices. Always refer to the specific datasheet for the exact model to confirm pinout and parameter tolerances.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The RT5797BHGQW is a related variant within the same product family. Verify if functional differences exist between the 'A' and 'B' suffixes regarding internal circuitry or performance specifications before substitution. Ensure the replacement matches the WDFN-8SL package dimensions and thermal requirements.