Overview
Description
The RAA271084 Automotive Safety Integrity Level D (ASIL D) and RAA271084-B (ASIL B) are general-purpose Power Management Integrated Circuits (PMICs) with a high-voltage front-end, optimized for MCU power in automotive applications. They feature a high-voltage buck/boost controller, a low-voltage synchronous buck controller, and five linear regulators (LDOs), two of which can operate as trackers.
The RAA271084 supports ASIL D system safety goals, while the RAA271084-B supports ASIL B. Both include key safety features such as voltage monitoring, temperature monitors, watchdog timer, reset generator, and a safety-control state machine.
Available in 48-lead SCQFN and LQFP-EP packages (RAA271084) and SCQFN (RAA271084-B), both devices are AEC-Q100 Grade 1 qualified for -40°C to 125°C operation. These products are intended for ISO 26262-compliant applications, though safety analysis and assessment are ongoing and subject to change.
Features
- Input range: 2.7V to 42V, supporting cold crank
- Integrated power management:
- Buck-Boost DC/DC1 5.7V
- Buck DC/DC2 resistor programmable
- Five linear regulators (LDOs), with configurable options for tracking and protection
- Low IQ modes:
- Power-off standby mode: 16μA
- DeepSTOP mode: 160μA
- EOT (Engine Off Timer) mode: 25μA
- Switching frequency: Selectable or fixed options with spread spectrum clocking
- Robust design:
- High-current FET drivers
- Watchdog options (QA or SPI-based)
- MCU error handling and reset features
- AEC-Q100 qualified (Grade 1)
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 3.13 MB | |
| List | ZIP 4.72 MB | |
| Brochure | PDF 10.73 MB | |
| Application Note | PDF 560 KB | |
| Application Note | PDF 403 KB | |
| List | ZIP 3.93 MB | |
| Application Note | PDF 550 KB | |
| Manual - Software | PDF 640 KB | |
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Design & Development
Software & Tools
Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Support Communities
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Questions about RAA271084 PMIC OTP registers
Hi, I'm using RAA271084 PMIC, and am wondering how the OTP registers can be programmed, like OPT_WDT_CONFIG1 which is marked FRW, can these type of registers be accessed via normal SPI byte write? And in which state can these registers be accessed? Thanks!
Jul 9, 2025 -
RH850/U2B6 -PMIC
Hi team, Please recommend a PMIC for RH850/U2B6. Thanks & Regards Jayakeerthana P
Jul 11, 2025 -
RH850/U2B10
Hi team, Is there any EVK KIT available for the RH850/U2B10 MCU?
Jul 2, 2025
Videos & Training
The RAA271084 is a PMIC designed to serve as the power supply, supervisor, and safety companion for RH850 MCUs, supporting safety goals up to Automotive Safety Integrity Level D (ASIL D).
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