Richtek USA Inc. RT6310BGQUF

Overview

RT6310BGQUF from Richtek USA Inc. is an ACOT synchronous step-down converter designed to generate a high-current local rail from a wide intermediate input bus. The device supports 10A buck conversion, 4.5V to 23V input operation, fixed 3.3V buck output, and 3.3V / 5V LDO-related bias support, giving compact processor, memory, networking, and embedded boards an efficient regulator with integrated power-stage behavior.

As part of the Richtek RT6310B/C/D product family, RT6310BGQUF combines constant-on-time control, synchronous rectification, power-good monitoring, enable control, bootstrap drive support, compact 13-UQFN 3.5mm x 3.5mm package, and suffix-specific output behavior. For engineers reviewing the RT6310BGQUF datasheet, RT6310BGQUF pinout, RT6310BGQUF application, or RT6310BGQUF equivalent, this device is widely used in notebook power rails, embedded computing boards, networking equipment, industrial controllers, storage systems, and compact high-current point-of-load regulators.

Technical Context

In local power-tree designs, RT6310BGQUF operates as a synchronous buck converter that steps a 4.5V to 23V supply down to fixed 3.3V buck output. The 10A rating allows the regulator to feed dense digital loads such as processors, FPGA I/O banks, memory rails, or communication chipsets.

The ACOT control architecture improves transient response without requiring a complex compensation network. The integrated or companion LDO function provides 3.3v / 5v ldo-related bias support, while the PGOOD and EN pins help the host system sequence and monitor the regulated rail.

RT6310BGQUF is commonly selected for compact boards that need a 13-UQFN 3.5mm x 3.5mm package regulator, high current density, fast load-step behavior, simple external components, and a factory-defined output version rather than a large controller-plus-MOSFET implementation.

Key Specifications

Pinout & Package

The RT6310BGQUF pinout includes VIN, LX or SW switching pins, BOOT bootstrap drive, VOUT or feedback sensing, EN control, PGOOD monitor, VCC or LDO-related pins, AGND, PGND, and exposed thermal ground functions according to the RT6310B/C/D package option.

For PCB design, the VIN capacitor, high-current switch loop, inductor, and output capacitors should be kept compact. Feedback or output-sense routing should stay away from LX/SW copper, and the exposed pad should connect to low-impedance thermal ground.

Key Features

• 10A synchronous buck conversion supports high-current point-of-load rails.
• 4.5V to 23V input range fits notebook, adapter, industrial, and embedded buses.
• fixed 3.3V buck output reduces external voltage-setting work for fixed-output variants.
• ACOT control improves transient behavior with simple external compensation needs.
• Power-good and enable pins support sequencing and diagnostics.
• Compact 13-UQFN 3.5mm x 3.5mm package supports dense regulator placement.

Applications

Equivalent & Alternatives

When evaluating a RT6310BGQUF equivalent, engineers should compare input range, output-current rating, fixed or adjustable output behavior, LDO rail, ACOT control behavior, package, and pinout.

Compared with RT6258BGQUF, RT6310BGQUF should be selected when the Richtek RT6310B/C/D pinout, output option, and auxiliary LDO behavior match the existing PCB. RT6310BGQUF vs TPS56C230RJER selection depends on current rating, input-voltage margin, package, fixed-output requirement, and compensation/control architecture.

Quality

RT6310BGQUF should be sourced as original Richtek components through traceable supply channels. Quality checks may include UQFN package inspection, top-mark validation, solderability testing, output-voltage confirmation, PGOOD behavior testing, and high-current thermal review.

Production validation should include startup behavior, load-transient response, line regulation, output ripple, thermal rise, short-circuit protection, and layout-sensitive switch-node ringing checks.

Availability

RT6310BGQUF available at Aetrix Electronics and is suitable for notebook, embedded computing, networking, industrial, storage, and compact point-of-load power applications.

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 fixed-output suffix, package, reel quantity, lifecycle status, lead time, and sourcing continuity helps reduce procurement risk.

Manufacturer

Richtek Technology, operating as Richtek USA Inc. in distribution channels, is a power-management semiconductor manufacturer focused on DC-DC converters, linear regulators, battery-management ICs, LED drivers, USB power devices, and compact regulator solutions for computing, industrial, networking, consumer, and embedded electronics.

The Richtek RT6310B/C/D product family is a synchronous buck regulator series using ACOT control and compact QFN packaging for high-current point-of-load rails in computing, networking, and embedded power systems.

FAQ

What is RT6310BGQUF used for?

RT6310BGQUF is used for notebook rails, embedded computing boards, networking equipment, industrial controllers, and high-current point-of-load power conversion.

Where can I find the RT6310BGQUF datasheet download?

The RT6310BGQUF datasheet is available from Richtek or authorized distributor product documentation.

What output does RT6310BGQUF provide?

RT6310BGQUF provides fixed 3.3V buck output with 10A buck current capability and 3.3v / 5v ldo-related bias support.

What should be considered in RT6310BGQUF pinout design?

Designers should keep the VIN-to-switch-node loop compact, place the inductor and output capacitors close, route sense lines away from LX/SW noise, and connect the exposed pad to thermal ground.

What are common RT6310BGQUF equivalent solutions?

Common candidates include RT6258BGQUF and TPS56C230RJER depending on current, fixed-output voltage, package, and pinout requirements.