MPQ79521FS-AEC1

MPQ79521FS-AEC1

MPSafe^TM,ASIL-B, 5-Channel Voltage Monitor, AEC-Q100 Qualified

Parameters Description

Channel No.
5
Vin (min) (V)
2.7
Vin (max) (V)
5.5
Reset Threshold (V)
Configurable
Threshold Accuracy (%)
1.0
Iq (typ) (µA)
6000
Reset Time Delay
25μs max
Package (mm)
QFN-16 (3x3)

The MPQ79521FS-AEC1 is a 5-channel voltage monitor. It is engineered for automotive applications that require voltage rails to be monitored for safety, such as advanced driver-assistance systems (ADAS) and autonomous driving platforms.

Each voltage monitor input has configurable over-voltage (OV) and under-voltage (UV) thresholds. Highly accurate high-frequency (HF) and low-frequency (LF) voltage monitoring can detect when the voltage thresholds are reached. One of the inputs is a differential voltage-sensing input pair that is well-suited for monitoring voltage rails with high current levels.

The MPQ79521FS-AEC1 can record the order in which voltage rails are sequenced, as well as their associated timestamps. The device also provides a sync input/output (I/O) function, which allows multiple devices to be connected together to increase the number of voltage rails that can perform these functions. The device is accessible through an I²C interface.

With the integration of sophisticated functional safety features, including built-in self-testing (BIST), diagnostics, and write protection, this device provides high diagnostic coverage to help the system achieve its target ASIL rating.

The MPQ79521FS-AEC1 is available in a QFN-16 (3mmx3mm) package with wettable flanks, and is available in AEC-Q100 Grade 1.

Features & Benefits

Precision Monitoring and Recording:
- 2.7V to 5.5V Input Voltage (V_IN) Range
- 5 Voltage Monitor Inputs: 4 Single-Ended, 1 Differential
- Absolute Over-Voltage (OV)/Under-Voltage (UV) Thresholds for High-Frequency and Low-Frequency Components:
  - 0.2V to 1.475V, 5mV/Step
  - 0.8V to 5.5V, 20mV/Step
- High DC Accuracy across the Entire Temperature Range:
  - >1V, ±1%
  - <1V, ±10mV
- Analog-to-Digital-Converter (ADC) for Voltage-Level Readback
- Power Sequence Recording for Power-On, Power-Off, and Sleep Entry/Exit
- Sync Inout/Output (I/O) for Multi-Device Sequence Synchronization
Functional Safety:
- Built-In Self-Testing (BIST)
- Interrupt Output Pin (Fault Reporting)
- Cyclic Redundancy Check (CRC) Protection on Registers
- Write Protection for Critical Registers to Support Systems Up to ASIL B
- ISO 26262 Functional Safety Compliant
Configurability for Vast Flexibility:
- I²C Interface with Packet Error Checking (PEC)
- One-Time Programmable (OTP) Memory
Additional Features:
- Available in a QFN-16 (3mmx3mm) Package with 0.5mm Pitch and Wettable Flanks
- Available in AEC-Q100 Grade 1