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Analog Devices Inc./Maxim Integrated MAX20484CATEA/VY+
- Part No.:
- MAX20484CATEA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20484CATEA/VY+.pdf
- Description:
- ASIL-D POWER SYSTEM MONITOR WITH
- Quantity:
- Payment:
- Shipping:
Inventory:490
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Product details
Overview
MAX20484CATEA/VY+ from Analog Devices is an ASIL D-compliant system-on-chip power-system monitor with five voltage monitor inputs, programmable OV/UV thresholds (±0.8% accuracy), I²C-accessible challenge/response watchdog, clock/fault monitor (25kHz–50MHz), and two independent RESET outputs - deployed in ADAS and autonomous driving processing systems.
For engineers reviewing the MAX20484CATEA/VY+ datasheet, MAX20484CATEA/VY+ pinout, MAX20484CATEA/VY+ application, or MAX20484CATEA/VY+ equivalent, key selection considerations include ASIL D compliance, 3mm × 3mm TQFN-EP package, -40°C to +125°C operation, flexible power-sequence recording, and CRC-protected I²C interface with OTP configuration.
Technical Context
The MAX20484CATEA/VY+ integrates five fixed-voltage monitoring channels with independently programmable overvoltage (102.5%–110%) and undervoltage (90%–97.5%) thresholds, each achieving ±0.8% accuracy at 0.5% step resolution. Its flexible power sequence recorder (FPSR) separately timestamps power-up and power-down events across on/off and sleep/standby states.
It implements a windowed watchdog with both simple and challenge/response modes, accessible via I²C, alongside a dedicated clock/fault input supporting 25kHz–50MHz frequencies. All I²C transactions include CRC error detection, and configuration is stored in OTP memory with ECC and reload capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.35V to 5.60V - supports direct connection to common automotive rail voltages without external regulators. |
| Operating Current | 150µA - enables low-power always-on monitoring in safety-critical subsystems. |
| Power-Down Current | 8µA - allows deep-sleep state retention during vehicle ignition-off periods. |
| Voltage Monitor Accuracy | ±0.8% - ensures precise threshold detection for ISO 26262 ASIL D fault coverage requirements. |
| Clock Monitor Range | 25kHz to 50MHz - covers crystal oscillators, PLL outputs, and MCU clock sources in ADAS SoCs. |
| Package | 3mm × 3mm, 16-pin side-wettable TQFN-EP - enables automated optical inspection (AOI) and high-reliability solder joint formation per AEC-Q100. |
| Temperature Range | -40°C to +125°C - qualified for under-hood and domain controller environments. |
Pinout & Package
MAX20484CATEA/VY+ uses a 3mm × 3mm, 16-pin side-wettable TQFN-EP package with exposed thermal pad (pin 16). The package supports AOI and meets AEC-Q100 Grade 0 requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply Input | Primary power rail (2.35V–5.60V); powers internal analog/digital blocks and I²C interface. |
| GND | Ground Reference | Analog/digital common reference; connects to exposed EP for thermal and EMI performance. |
| IN1–IN5 | Voltage Monitor Inputs | Five high-impedance inputs for monitoring MCU core, I/O, or sensor supply rails with programmable OV/UV thresholds. |
| CLKIN | Clock/Fault Monitor Input | Accepts 25kHz–50MHz clock signals; detects frequency deviation or loss for timing integrity validation. |
| SDA/SCL | I²C Interface | Two-wire serial bus with CRC protection; supports programmable address and OTP reload via I²C. |
| RESET1/RESET2 | Configurable Reset Outputs | Independently programmable open-drain outputs for sequenced or fault-triggered system resets. |
| WDI | Watchdog Input | Optional external watchdog trigger input; complements I²C-configured challenge/response mode. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Power Sequence Recorder (FPSR) | Stores timestamped power-up/down events separately for on/off and sleep/standby sequences - enables root-cause analysis of power-related failures. |
| Challenge/Response Watchdog | I²C-accessible windowed watchdog requiring dynamic response codes - prevents software lockup without relying on fixed-timeout behavior. |
| CRC-Protected I²C Interface | Detects bit errors during configuration reads/writes - ensures integrity of safety-critical register settings in noisy automotive environments. |
| OTP Configuration with ECC | One-time-programmable memory with error-correcting code and reload function - guarantees consistent startup behavior across production units and field updates. |
| AEC-Q100 Qualified | Grade 0 qualification (-40°C to +125°C) with stress testing per automotive reliability standards - validates suitability for safety-critical ADAS ECUs. |
Applications
| ADAS Domain Controllers | Autonomous Driving Compute Modules |
|---|---|
Use Scenario: Real-time monitoring of multiple voltage rails (e.g., SoC core, GPU, SerDes, camera interfaces) in centralized ADAS domain controllers. IC Role / Device Role / Timing Role: System-level power supervisor enforcing ASIL D fault detection, sequencing, and recovery coordination. Use Value: Replaces discrete supervisors and timers, reducing BOM count while enabling timestamped fault logging for ISO 26262 diagnostic coverage reporting. | Use Scenario: Supervision of heterogeneous compute clusters (CPU, AI accelerators, memory) with strict power sequencing and clock integrity checks. IC Role / Device Role / Timing Role: Centralized power-system monitor coordinating power-state transitions and validating clock sources for safety islands. Use Value: Enables deterministic power-up/down sequences and detects clock faults before functional safety mechanisms activate - critical for ASIL D decomposition. |
| Remote Sensor Fusion Units | Automotive Gateway ECUs |
Use Scenario: Compact, low-power supervision of radar/LiDAR/camera sensor nodes mounted in harsh under-bumper or wheel arch locations. IC Role / Device Role / Timing Role: Standalone power and clock monitor with minimal external components and ultra-low quiescent current. Use Value: Achieves 8µA power-down current and operates down to -40°C - extends battery-backed operation and supports cold-cranking robustness. | Use Scenario: Monitoring of gateway ECU power domains (CAN FD, Ethernet, LIN, microcontroller supplies) with integrated reset coordination. IC Role / Device Role / Timing Role: Multi-rail supervisor with dual independent RESET outputs and I²C diagnostics for network interface health. Use Value: Eliminates need for separate reset generators and clock monitors - simplifies layout and improves inter-rail timing correlation for network synchronization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-system monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX22520ATP+ | Four-input monitor with integrated isolated CAN FD transceiver; no clock monitor or FPSR; lower channel count and no challenge/response watchdog. | Targeted at isolated communication node supervision rather than full SoC power monitoring. | Select when isolation and CAN FD interface are primary needs, not comprehensive power sequencing or clock integrity. |
| TPS659413ARSLR | PMIC with four LDOs/DC-DCs + three voltage monitors; lacks clock/fault monitor, FPSR, and ASIL D documentation; I²C only, no CRC. | Designed for power conversion + basic supervision in infotainment, not safety-critical ADAS domain control. | Choose for cost-sensitive non-ASIL applications needing integrated regulation, not standalone high-integrity monitoring. |
Compared with MAX20484CATEA/VY+, MAX22520ATP+ trades power-monitoring depth for signal isolation and bus interface, while TPS659413ARSLR emphasizes power delivery over diagnostic rigor - neither provides ASIL D-compliant FPSR, clock monitoring, or challenge/response watchdog functionality.
Availability
MAX20484CATEA/VY+ is available at Aetrix Electronics and suitable for ADAS domain controllers, autonomous driving compute modules, and remote sensor fusion units requiring stable component supply, AEC-Q100 qualification, and ASIL D compliance support.
Supply support for MAX20484CATEA/VY+ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20484CATEA/VY+ belongs to Analog Devices' automotive safety power-monitoring product line, engineered specifically for ASIL D-compliant power-system supervision in next-generation ADAS and autonomous driving platforms.
FAQ
What is the operating temperature range of the MAX20484CATEA/VY+?
The MAX20484CATEA/VY+ is rated for -40°C to +125°C ambient operation and is AEC-Q100 Grade 0 qualified. This range supports deployment in engine compartments, domain controllers, and other high-temperature automotive locations where thermal stability is essential for ASIL D compliance. The MAX20484CATEA/VY+ maintains specified accuracy and timing behavior across this full range without derating.
Does the MAX20484CATEA/VY+ support I²C clock stretching or multi-master arbitration?
The MAX20484CATEA/VY+ implements a standard I²C slave interface with CRC protection but does not support clock stretching or multi-master arbitration. It operates as a single-slave device with programmable 7-bit address, intended for point-to-point connection with a master controller. The MAX20484CATEA/VY+ relies on host-controlled polling and timeout handling rather than hardware-level arbitration.
How is the clock/fault monitor in the MAX20484CATEA/VY+ configured for frequency tolerance?
The MAX20484CATEA/VY+ clock/fault monitor accepts input frequencies from 25kHz to 50MHz and detects loss-of-signal or out-of-range conditions based on programmable window thresholds. Frequency tolerance is set via I²C registers controlling upper/lower frequency bounds and glitch rejection time; no external components are required. The MAX20484CATEA/VY+ does not perform real-time frequency measurement but validates presence and range compliance.
Can the two RESET outputs of the MAX20484CATEA/VY+ be configured for different assertion conditions?
Yes, RESET1 and RESET2 in the MAX20484CATEA/VY+ are independently programmable for different fault sources - including individual voltage monitor channels, clock/fault input failure, watchdog timeout, or power-sequence violations. Each output supports active-low open-drain operation with configurable debounce and assertion duration, enabling hierarchical reset schemes in complex SoC systems.
Is the OTP memory in the MAX20484CATEA/VY+ reprogrammable after initial configuration?
No, the OTP memory in the MAX20484CATEA/VY+ is one-time programmable and cannot be rewritten. However, it includes error-correcting code (ECC) and a reload function that allows runtime restoration of factory-default or previously saved configurations from volatile RAM. This ensures consistent behavior across power cycles without requiring reprogramming of the OTP array itself.
MAX20484CATEA/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Type:
- Power Supply Monitor
- Number of Voltages Monitored:
- 5
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-SW-TQFN (3x3)
MAX20484CATEA/VY+ FAQ
1.How can I place an order for MAX20484CATEA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20484CATEA/VY+ 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 MAX20484CATEA/VY+ reliable?
The price and inventory of MAX20484CATEA/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20484CATEA/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20484CATEA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20484CATEA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20484CATEA/VY+?
MAX20484CATEA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20484CATEA/VY+ 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 MAX20484CATEA/VY+?
For technical support, including MAX20484CATEA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20484CATEA/VY+ requirements.
6.How does Aetrix verify that MAX20484CATEA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20484CATEA/VY+ 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 MAX20484CATEA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20484CATEA/VY+?
All MAX20484CATEA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20484CATEA/VY+, 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 MAX20484CATEA/VY+ part is unused and in its original packaging.
Return procedure for MAX20484CATEA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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