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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Renesas DA9131-XXRT1-AT

Name: DA9131-XXRT1-AT
Brand: Renesas
SKU: DA9131-XXRT1-AT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DA9131-XXRT1-AT

Manufacturer:: Renesas

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 24-PowerUFQFN

Datasheet:: DA9131-XXRT1-AT.pdf

Description:: IC REG BUCK ADJ 10A 24FCQFN

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Product details

Overview

DA9131-XXRT1-AT from Renesas Electronics is a dual-channel automotive-grade PMIC integrating two fully synchronous buck converters for CPU/GPU and DDR memory rail regulation in ADAS and infotainment systems. It delivers up to 5 A per channel across 0.3 V–1.9 V output, operates from 2.8 V–5.5 V input, features 4 MHz switching, ±1 % static output voltage accuracy, and AEC-Q100 Grade 2 qualification.

For engineers reviewing the DA9131-XXRT1-AT datasheet, DA9131-XXRT1-AT pinout, DA9131-XXRT1-AT application, or DA9131-XXRT1-AT equivalent, key selection criteria include dual-rail dynamic voltage control (DVC), remote sensing capability, I²C-compatible FM+ interface, integrated over-temperature/over-current protection, and wettable-flank 24-pin FCQFN (3.3 mm × 4.8 mm) packaging for automotive PCB reliability.

Technical Context

The DA9131-XXRT1-AT implements two independent single-phase synchronous buck regulators with integrated high-side and low-side MOSFETs, eliminating external FETs or Schottky diodes. Each channel supports programmable soft-start, cycle-by-cycle current limiting, and remote differential feedback (FB1P/FB1N, FB2P/FB2N) for ±1 % static output accuracy under load and line variation.

It features an I²C-compatible FM+ interface (up to 1 MHz), configurable GPIOs (GPIO0–GPIO4), interrupt reporting via nIRQ, and Dynamic Voltage Control (DVC) that adjusts output voltage in real time based on processor load-either through register writes or dedicated DVC input pins-enabling adaptive power savings in SoC/FPGA-based ECU designs.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.8 V to 5.5 V - supports direct connection to automotive 3.3 V or 5 V rails without pre-regulation.
Output Voltage Range	0.3 V to 1.9 V per channel - covers core logic (e.g., 0.8 V CPU), GPU (1.1 V), and DDR (1.2 V/1.8 V) rails.
Max Output Current	5 A per channel - sufficient for high-performance automotive SoCs and DDR4/DDR5 memory subsystems.
Switching Frequency	4 MHz nominal - enables use of ultra-small 220 nH inductors and compact 20 µF ceramic output capacitors.
Output Accuracy	±1 % static, ±5 % dynamic - ensures stable voltage under transient load steps typical in processor burst modes.
Operating Temp	−40 °C to +105 °C ambient - meets AEC-Q100 Grade 2 requirements for under-hood and center-console placement.
Protection Features	Integrated over-temperature, over-current, and thermal shutdown - no external sensing components required.

Pinout & Package

DA9131-XXRT1-AT is housed in a 24-pin FCQFN package (3.3 mm × 4.8 mm) with wettable flanks for automated optical inspection (AOI) and enhanced solder joint reliability in automotive reflow processes.

Pin/Terminal	Circuit Role	Design Meaning
PVDD1, PVDD2	Power supply inputs	Dedicated 5 A-rated inputs for each buck channel; must be decoupled locally to minimize noise coupling.
LX1, LX2	Switch node outputs	High-current buck switch nodes connecting to external 220 nH inductors; require tight layout with minimal loop area.
FB1P/FB1N, FB2P/FB2N	Differential remote sense inputs	Enable Kelvin sensing at load point to reject PCB IR drop and maintain ±1 % regulation accuracy across routing variations.
SCL/GPIO3, SDA/GPIO4	I²C interface / GPIO	FM+-compatible bidirectional bus lines; support multi-device addressing via CONF/GPIO0 configuration.
IC_EN	Chip enable input	Active-high digital enable controlling global device power-up sequence and sequencing coordination with system power rails.
CONF/GPIO0	Configuration select / GPIO	Configures I²C slave address during power-up; also functions as programmable GPIO for DVC or PG indication.
PGND, AGND	Power and analog ground	Separate ground domains isolate high-current switching noise from sensitive analog feedback and I²C signaling paths.

Key Features

Feature	Design Value
Dual synchronous buck topology	Two independent 5 A channels with integrated FETs eliminate external power components and reduce BoM count by ≥4 parts per channel.
Dynamic Voltage Control (DVC)	Real-time output adjustment via I²C register write or dedicated GPIO pin, enabling >15 % power reduction during SoC idle states.
Remote differential sensing	FBxP/FBxN pairs compensate for PCB trace resistance up to 50 mΩ, maintaining regulation accuracy without layout constraints.
Programmable soft-start	Configurable ramp rate limits inrush current during power-up, preventing input rail collapse in shared 5 V automotive supplies.
Wettable-flank FCQFN	24-pin 3.3 mm × 4.8 mm package enables AOI-compatible solder joint inspection critical for zero-defect automotive manufacturing.

Applications

ADAS Camera Module	Infotainment Head Unit
Use Scenario: Dual-rail power delivery for image signal processor (ISP) and high-speed MIPI CSI-2 serializer in front-facing camera ECU. IC Role / Device Role / Timing Role: DA9131-XXRT1-AT regulates 0.85 V ISP core and 1.2 V MIPI PHY rails with synchronized soft-start and DVC-triggered voltage scaling during low-light mode. Use Value: Remote sensing maintains <±10 mV output deviation despite 150 mm PCB trace length between PMIC and sensor die, ensuring timing margin integrity.	Use Scenario: Power management for quad-core application processor and LPDDR4 memory in 10.25″ digital cockpit display. IC Role / Device Role / Timing Role: DA9131-XXRT1-AT supplies 0.75 V CPU core and 1.1 V DDR4 VDDQ rails with independent DVC response to GPU load changes detected via I²C. Use Value: 4 MHz switching allows 220 nH inductors and reduces total solution area to 218 mm²-fitting within tight mechanical envelope behind display bezel.
Automotive Cluster Display	Telematics Control Unit (TCU)
Use Scenario: Compact power solution for ARM Cortex-A76-based instrument cluster SoC with integrated graphics and CAN FD interface. IC Role / Device Role / Timing Role: DA9131-XXRT1-AT delivers 0.9 V GPU and 1.8 V display interface rails, with PG output signaling rail readiness to MCU boot sequence. Use Value: Integrated over-temperature protection triggers thermal foldback at 125 °C junction, preventing display flicker during prolonged summer cabin operation.	Use Scenario: Powering cellular modem (LTE/5G), GNSS receiver, and eSIM controller in vehicle-to-cloud connectivity module. IC Role / Device Role / Timing Role: DA9131-XXRT1-AT provides 1.0 V modem core and 1.8 V RF transceiver rails, coordinated via I²C to enter low-power sleep mode when network activity ceases. Use Value: AEC-Q100 Grade 2 qualification ensures uninterrupted operation at −40 °C cold cranking and +105 °C under-dash thermal conditions.

ADAS Camera Module

Infotainment Head Unit

Use Scenario: Dual-rail power delivery for image signal processor (ISP) and high-speed MIPI CSI-2 serializer in front-facing camera ECU.

IC Role / Device Role / Timing Role: DA9131-XXRT1-AT regulates 0.85 V ISP core and 1.2 V MIPI PHY rails with synchronized soft-start and DVC-triggered voltage scaling during low-light mode.

Use Value: Remote sensing maintains <±10 mV output deviation despite 150 mm PCB trace length between PMIC and sensor die, ensuring timing margin integrity.

Use Scenario: Power management for quad-core application processor and LPDDR4 memory in 10.25″ digital cockpit display.

IC Role / Device Role / Timing Role: DA9131-XXRT1-AT supplies 0.75 V CPU core and 1.1 V DDR4 VDDQ rails with independent DVC response to GPU load changes detected via I²C.

Use Value: 4 MHz switching allows 220 nH inductors and reduces total solution area to 218 mm²-fitting within tight mechanical envelope behind display bezel.

Automotive Cluster Display

Telematics Control Unit (TCU)

Use Scenario: Compact power solution for ARM Cortex-A76-based instrument cluster SoC with integrated graphics and CAN FD interface.

IC Role / Device Role / Timing Role: DA9131-XXRT1-AT delivers 0.9 V GPU and 1.8 V display interface rails, with PG output signaling rail readiness to MCU boot sequence.

Use Value: Integrated over-temperature protection triggers thermal foldback at 125 °C junction, preventing display flicker during prolonged summer cabin operation.

Use Scenario: Powering cellular modem (LTE/5G), GNSS receiver, and eSIM controller in vehicle-to-cloud connectivity module.

IC Role / Device Role / Timing Role: DA9131-XXRT1-AT provides 1.0 V modem core and 1.8 V RF transceiver rails, coordinated via I²C to enter low-power sleep mode when network activity ceases.

Use Value: AEC-Q100 Grade 2 qualification ensures uninterrupted operation at −40 °C cold cranking and +105 °C under-dash thermal conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel automotive PMIC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPQ4332-AEC1	Single-channel 6 A buck; requires two ICs for dual-rail; no integrated DVC or remote sensing.	Lacks native DVC and differential feedback-requires external circuitry for adaptive voltage scaling and precision regulation.	Choose when cost-per-amp is prioritized over integration and board space; not suitable for tight sequencing or high-accuracy DDR rails.
TPS659423-Q1	Quad-channel PMIC with LDOs; larger 48-pin VQFN; higher quiescent current (25 µA vs. 12 µA).	Includes auxiliary LDOs and CAN transceiver bias, but lacks wettable flanks and has 30 % larger footprint.	Prefer when system requires mixed DC-DC + LDO + interface power; avoid if minimizing PCB area or enabling AOI is mandatory.

Compared with MPQ4332-AEC1 and TPS659423-Q1, the DA9131-XXRT1-AT uniquely combines dual 5 A buck channels, DVC, remote sensing, and wettable-flank packaging in a 24-pin FCQFN-delivering highest functional density and automotive production readiness for next-gen ECU designs.

Availability

DA9131-XXRT1-AT is available at Aetrix Electronics and suitable for vehicle infotainment systems, ADAS camera modules, and automotive telematics requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.

Supply support for DA9131-XXRT1-AT 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

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.

The DA9131-XXRT1-AT belongs to Renesas' automotive power management portfolio, engineered specifically for high-current, low-voltage SoC and memory rail regulation in safety-critical ADAS and digital cockpit systems.

FAQ

What is the maximum supported switching frequency of the DA9131-XXRT1-AT?

The DA9131-XXRT1-AT operates at a nominal switching frequency of 4 MHz. This fixed-frequency architecture enables consistent EMI behavior and supports ultra-compact external passive components-including 220 nH inductors and 20 µF ceramic capacitors-while maintaining high efficiency (>92 % at 1.0 V/3 A). The frequency is not user-adjustable and is optimized for thermal performance and PCB area minimization in automotive environments.

Does the DA9131-XXRT1-AT support remote voltage sensing for both output channels?

Yes, the DA9131-XXRT1-AT supports true differential remote sensing on both channels via dedicated FB1P/FB1N and FB2P/FB2N pins. This allows Kelvin connections directly at the load point, compensating for PCB trace resistance up to 50 mΩ and ensuring ±1 % output voltage accuracy regardless of routing path length or copper thickness-critical for maintaining timing margins in high-speed SoC and DDR interfaces.

How does Dynamic Voltage Control (DVC) function in the DA9131-XXRT1-AT?

DVC in the DA9131-XXRT1-AT enables real-time adjustment of either output voltage based on processor load state. It can be activated via I²C register write (allowing software-defined voltage tables) or through a dedicated GPIO pin (supporting hardware-triggered scaling). When enabled, DVC reduces output voltage during low-activity periods-e.g., dropping CPU core rail from 0.85 V to 0.7 V-yielding measurable power savings without compromising functional safety or timing compliance.

What package type and dimensions does the DA9131-XXRT1-AT use?

The DA9131-XXRT1-AT uses a 24-pin FCQFN package measuring 3.3 mm × 4.8 mm with wettable flanks. This package supports automated optical inspection (AOI) of solder joints-a requirement for zero-defect automotive manufacturing-and provides excellent thermal performance (θJA = 21.21 °C/W) on standard 4-layer JEDEC boards. Its compact size enables integration into space-constrained modules like SIPP-based ADAS ECUs.

Is the DA9131-XXRT1-AT qualified for automotive applications?

Yes, the DA9131-XXRT1-AT is AEC-Q100 Grade 2 qualified (−40 °C to +105 °C ambient), with built-in over-temperature and over-current protection, 2 kV HBM ESD rating, and automotive-grade process validation. It is designed for deployment in safety-conscious systems including ADAS camera ECUs, infotainment head units, digital clusters, and telematics control units-meeting stringent reliability, longevity, and failure-rate requirements for automotive production.

DA9131-XXRT1-AT Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 24-PowerUFQFN

Packaging:: Tray

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 2.5V

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 0.3V

Voltage - Output (Max):: 1.9V

Current - Output:: 10A

Frequency - Switching:: 4MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: 24-FCQFN (3.3x4.8)

DA9131-XXRT1-AT FAQ

1.How can I place an order for DA9131-XXRT1-AT through Aetrix?

Please submit a Request for Quotation (RFQ) for DA9131-XXRT1-AT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for DA9131-XXRT1-AT reliable?

The price and inventory of DA9131-XXRT1-AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DA9131-XXRT1-AT is usually 5 days.

3.What payment methods are accepted for DA9131-XXRT1-AT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DA9131-XXRT1-AT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DA9131-XXRT1-AT?

DA9131-XXRT1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DA9131-XXRT1-AT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for DA9131-XXRT1-AT?

For technical support, including DA9131-XXRT1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DA9131-XXRT1-AT requirements.

6.How does Aetrix verify that DA9131-XXRT1-AT is sourced from the original manufacturer or authorized distributors?

All DA9131-XXRT1-AT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DA9131-XXRT1-AT meets industry standards.

7.What is the process for return or replacement of DA9131-XXRT1-AT?

All DA9131-XXRT1-AT units undergo pre-shipment inspection (PSI). If there is an issue with DA9131-XXRT1-AT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The DA9131-XXRT1-AT part is unused and in its original packaging.

Return procedure for DA9131-XXRT1-AT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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