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)
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.
Parameters
| Attributes | Value |
|---|---|
| Function | 7-ch ASIL B PMIC, 7-ch ASIL D PMIC |
| Outputs (#) | 7 |
| Input Voltage (Min) (V) | 2.7 |
| Input Voltage (Max) (V) | 42 |
| Output Current Max (A) | 10 |
| Integrated Battery Charger | No |
| USB-Power Management | No |
| Switching Frequency (MHz) | 0.44 - 2.2 |
| Bus Voltage (Max) (V) | 5.5 |
| Integrated step-down DC/DC Converter Channels (#) | 2 |
| Step-up DC/DC converter Channels (#) | 1 |
| Total step-down DC/DC converter channels (#) | 2 |
| Comm. Interface | SPI |
| Parametric Applications | Traction Inverter, X-in-1, Zone Controller, Domain Controller, ADAS, BMS |
Application Block Diagrams
 | X-in-1 Electric Vehicle Unit Integrated X-in-1 EV power system for efficient motor control, charging, and DC/DC conversion. |
Additional Applications
- Automotive power-train systems
- Automotive gateway systems
- Ideal power supply for RH850 U2x MCUs