Texas Instruments TPS6286810CRQYR

Overview

TPS6286810CRQYR from Texas Instruments is a 4-A synchronous step-down DC-DC converter with I²C interface, designed for core voltage regulation in high-performance digital loads. It operates from 2.4 V to 5.5 V input, delivers 0.9 V output with ±1% accuracy, uses DCS-Control™ topology for fast transient response, and integrates 11-mΩ/10.5-mΩ MOSFETs in a 1.5-mm × 2.5-mm QFN package - ideal for FPGA and LPDDR5 VDDQ rail supply.

For engineers reviewing the TPS6286810CRQYR datasheet, TPS6286810CRQYR pinout, TPS6286810CRQYR application, or TPS6286810CRQYR equivalent, key selection criteria include its fixed 0.9-V start-up output, PG pin functionality (not VSET/VID), 2.4-MHz switching frequency, I²C-configurable power-save/PWM mode, and thermal warning/shutdown thresholds at 130 °C/150 °C.

Technical Context

The TPS6286810CRQYR implements DCS-Control™ architecture, enabling seamless transition between PWM and Power Save Mode without output disturbance. Its 2.4-MHz fixed-frequency PWM operation ensures low output ripple, while light-load efficiency is maintained via discontinuous conduction mode entry.

This variant features a dedicated PG (power-good) open-drain output pin instead of VSET/VID, with start-up output voltage factory-set to 0.9 V. Internal 11-mΩ high-side and 10.5-mΩ low-side MOSFETs support up to 4-A continuous output current with thermal pre-warning at 130 °C and shutdown at 150 °C.

Key Specifications

Pinout & Package

TPS6286810CRQYR is housed in a 1.5-mm × 2.5-mm × 1.0-mm, 9-pin QFN package (RQY) with 0.5-mm pitch and wettable flanks for automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with TPS6286810CRQYR, TPS628681ARQY offers start-up voltage flexibility at the cost of losing integrated power-good signaling, while TPS6286910CRQY provides 50% higher output current in identical form factor - enabling direct upgrade path without layout change where thermal design permits.

Availability

TPS6286810CRQYR is available at Aetrix Electronics and suitable for FPGA core supplies, LPDDR5 VDDQ rails, and optical transceiver modules requiring stable component supply, long-term lifecycle assurance, and full production traceability.

Supply support for TPS6286810CRQYR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC-DC conversion.

The TPS62868x family was engineered for high-density, I²C-programmable power delivery in advanced computing and communications systems - targeting FPGA, ASIC, and memory subsystems demanding dynamic voltage scaling and ultra-fast transient response.

FAQ

What is the start-up output voltage of the TPS6286810CRQYR?

The TPS6286810CRQYR has a factory-set start-up output voltage of 0.9 V. Unlike variants with VSET/VID pins, this device uses the PG pin configuration and does not require an external resistor to define initial output voltage. The 0.9-V setting is fixed and verified across temperature and process corners per TI's production test flow for TPS6286810CRQYR.

Does the TPS6286810CRQYR support dynamic voltage scaling (DVS) via I²C?

Yes, the TPS6286810CRQYR supports full DVS through its I²C interface. It offers three programmable output voltage ranges: 0.2–0.8375 V (2.5-mV steps), 0.4–1.675 V (5-mV steps), and 0.8–3.35 V (10-mV steps). This enables precise adaptation to processor performance states, including LPDDR5 VDDQ scaling requirements defined in JEDEC JESD209-5.

What protection features are configurable via I²C on the TPS6286810CRQYR?

The TPS6286810CRQYR allows I²C configuration of power-save mode vs. forced PWM mode, output discharge enable/disable, hiccup vs. latching short-circuit response, and output voltage ramp speed. These settings are stored in nonvolatile registers and persist across enable cycles, enabling robust system-level power management without host firmware intervention during runtime.

How does the thermal warning function work on the TPS6286810CRQYR?

The TPS6286810CRQYR asserts thermal warning at 130 °C junction temperature with 20 °C hysteresis, providing early system-level alert before reaching 150 °C thermal shutdown. This signal is not exposed on a dedicated pin but is accessible via I²C status register bit TH_WARN. It enables host processors to throttle activity or increase fan speed preemptively - a key feature for thermally constrained IP camera and optical module designs.

Is the TPS6286810CRQYR pin-compatible with other devices in the TPS62868x family?

The TPS6286810CRQYR shares the identical 9-pin RQY QFN package and pinout with all TPS62868x/TPS62869x variants, including TPS628681ARQY and TPS6286910CRQY. However, pin functionality differs: TPS6286810CRQYR uses Pin 9 as PG (open-drain power-good), whereas TPS628681ARQY uses it as VSET/VID. Thus, while footprint-compatible, board-level redesign is required to swap between PG and VSET/VID variants.