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 | |
| Application Note | PDF 403 KB | |
| Application Note | PDF 550 KB | |
| Manual - Software | PDF 640 KB | |
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Design & Development
Software & Tools
Boards & Kits
Evaluation
RTKA271084DE0000BU
Active
Evaluation Board for RAA271084 Scalable ASIL D Microcontroller PMIC
The RTKA271084DE0000BU evaluates the performance of the RAA271084 automotive PMIC, which features a high-voltage primary buck/boost controller, a low-voltage synchronous buck controller, and five low-dropout linear regulators (LDOs), two of which can be used as trackers. The evaluation board is...
Recommended Documents:
Evaluation
Y-RH850-U2B10-TB
Active
RH850/U2B10 Target Board with Automotive (ASIL-D) Power Management IC
The RH850/U2B10 and Power Management IC Target Board serves as an evaluation board with Arduino form factor. The circuit shows a possible implementation of the RH850/U2B10 MCU and an automotive (ASIL-D) power management IC.
Recommended Documents:
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.
Product Options
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Videos & Training
RAA271084: ASIL D PMIC with Power Scalability for High Performance MCUs
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).
Related Resources
Video List
