Richtek USA Inc. RT6585BGQW(2)

Overview

RT6585BGQW(2) from Richtek USA Inc. is a four-output power-management controller combining two synchronous DC/DC step-down controller channels with integrated 5V and 3.3V LDO regulator functions. The device is designed for notebook, embedded, and battery-powered systems requiring multiple regulated rails from a compact WQFN controller.

As part of the RT6585A/B product family, RT6585BGQW(2) combines dual buck-controller operation, 400kHz and 475kHz switching frequencies, fixed 5V/3.3V auxiliary LDO support, fast transient response behavior, and 20-WQFN 3x3 integration. For engineers reviewing the RT6585BGQW(2) datasheet, RT6585BGQW(2) pinout, RT6585BGQW(2) application, or RT6585BGQW(2) equivalent, this device is widely used in laptop motherboards, embedded processor boards, industrial controllers, communication modules, battery-powered products, and compact multi-output regulator designs.

Technical Context

In compact power trees, RT6585BGQW(2) controls two external-MOSFET synchronous buck stages for adjustable high-efficiency rails, while integrated LDO outputs provide local 5V and 3.3V auxiliary power.

The 400kHz and 475kHz switching-frequency pair differentiates the RT6585 family from lower-frequency Richtek dual buck PMICs and helps designers reduce inductor size while keeping predictable switching behavior. The integrated LDOs reduce the need for separate standby or auxiliary regulators.

RT6585BGQW(2) is commonly used where a board needs the RT6585B rail structure, 20-WQFN pinout, and compact dual-buck-plus-LDO controller integration.

Key Specifications

Pinout & Package

The RT6585BGQW(2) pinout includes input supply, dual buck-controller drive pins, feedback and current-limit pins, LDO output pins, sequencing/status pins, and exposed-pad ground connections.

For PCB design, the high-current MOSFET gate-drive loops should be compact, feedback and current-sense traces should avoid switch-node noise, and the WQFN exposed pad should be tied to low-impedance thermal ground.

Key Features

• Dual buck controllers support two adjustable high-efficiency rails.
• 5V and 3.3V LDOs provide auxiliary local supplies.
• 400kHz/475kHz switching supports compact magnetics.
• Fast transient behavior helps processor and chipset loads.
• Sequencing and power-good functions support rail coordination.
• 20-WQFN 3x3 package fits dense notebook boards.

Applications

Equivalent & Alternatives

When evaluating a RT6585BGQW(2) equivalent, engineers should compare input range, output count, controller topology, LDO current, switching frequency, sequencing behavior, audio/noise mode options, package, and sourcing status.

Compared with RT6575BGQW(2), RT6585BGQW(2) uses the RT6585A/B family behavior with 400kHz/475kHz switching. RT6585BGQW(2) vs RT6576DGQW(2) selection depends on frequency targets, exact suffix, output requirements, and WQFN pinout compatibility.

Quality

RT6585BGQW(2) should be sourced as original Richtek USA Inc. components through traceable supply channels. Quality checks may include package inspection, top-mark validation, solderability testing, startup sequencing verification, output-voltage accuracy testing, and thermal review.

Production validation should include dual-buck load transients, LDO regulation, power-good timing, soft-start behavior, light-load mode behavior, and layout-sensitive switching noise.

Availability

RT6585BGQW(2) available at Aetrix Electronics and is suitable for notebook, embedded, industrial, communication, battery-powered, and compact multi-rail power systems.

Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial electronics, automotive electronics, and embedded product programs. Sample and NPI supply support, as well as urgent in-stock supply support, can also be arranged for prototype builds, pilot runs, and time-critical production needs.

For production builds, confirming package, output configuration, lifecycle status, lead time, and sourcing continuity helps reduce procurement risk.

Manufacturer

Richtek Technology, now part of MediaTek, is a semiconductor manufacturer specializing in power-management ICs, DC-DC converters, LDO regulators, battery-management devices, LED drivers, and industrial, computing, communication, and consumer power solutions.

The RT6585A/B family is a Richtek dual synchronous buck controller plus 5V/3.3V LDO family for notebook, embedded, and battery-powered multi-rail regulator systems.

FAQ

What is RT6585BGQW(2) used for?

RT6585BGQW(2) is used for dual-buck plus LDO multi-rail power management in battery-powered, notebook, industrial, and embedded systems.

Where can I find the RT6585BGQW(2) datasheet download?

The datasheet is available from Richtek or authorized distributor documentation.

What should be considered in RT6585BGQW(2) pinout design?

Designers should keep MOSFET gate-drive paths short, place feedback networks away from switching nodes, and provide strong exposed-pad grounding.

What are common RT6585BGQW(2) equivalent solutions?

Common candidates include RT6575BGQW(2) and RT6576DGQW(2) depending on frequency, output rails, pinout, and package.