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Analog Devices Inc./Maxim Integrated MAX20484CATEA/VY+T
- Part No.:
- MAX20484CATEA/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20484CATEA/VY+T.pdf
- Description:
- ASIL-D POWER SYSTEM MONITOR WITH
- Quantity:
- Payment:
- Shipping:
Inventory:1,596
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Product details
Overview
MAX20484CATEA/VY+T from Analog Devices is an ASIL D-compliant power-system monitor SoC with five voltage-monitor inputs, programmable OV/UV thresholds (±0.8% accuracy), I²C-accessible challenge/response watchdog, clock/fault monitor (25kHz–50MHz), and flexible power-sequence recorder - deployed in ADAS and autonomous driving processing systems.
For engineers reviewing the MAX20484CATEA/VY+T datasheet, MAX20484CATEA/VY+T pinout, MAX20484CATEA/VY+T application, or MAX20484CATEA/VY+T equivalent, key selection criteria include ASIL D compliance, 3mm × 3mm TQFN-EP package, dual programmable RESET outputs, OTP configuration with ECC, and AEC-Q100 qualification for automotive safety-critical power supervision.
Technical Context
The MAX20484CATEA/VY+T 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 FPSR captures timestamped power-up/down events per channel and supports sleep/standby sequence logging.
It implements a windowed watchdog with both simple and challenge/response modes, accessible via I²C with CRC protection and programmable address. The clock/fault monitor accepts input frequencies from 25kHz to 50MHz and triggers fault recording on deviation or loss of signal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.35V to 5.60V - supports direct connection to common automotive rail voltages including 3.3V and 5V domains. |
| Operating Current | 150µA - enables low-power always-on supervision without significant system-level current penalty. |
| Power-Down Current | 8µA - allows retention of configuration and fault history during deep-sleep states. |
| OV/UV Threshold Accuracy | ±0.8% - ensures precise detection of supply deviations critical for ASIL D fault containment. |
| Clock Monitor Range | 25kHz to 50MHz - covers crystal oscillators, PLL reference clocks, and high-speed timing sources in ADAS SoCs. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood and domain-controller environments per AEC-Q100 Grade 0. |
| I²C Interface | With CRC and programmable address - provides robust, configurable communication for diagnostics and reconfiguration. |
Pinout & Package
MAX20484CATEA/VY+T is housed in a 3mm × 3mm, 16-pin side-wettable TQFN-EP package with exposed thermal pad, optimized for automated optical inspection (AOI) and high-reliability automotive solder joints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply Input | Primary power rail input (2.35V–5.60V); powers internal analog and digital blocks. |
| GND | Ground Reference | Analog/digital common return; connects to EP pad for thermal and EMI performance. |
| IN1–IN5 | Voltage Monitor Inputs | Five dedicated analog inputs for monitoring system rails; each supports independent OV/UV threshold programming. |
| CLKIN | Clock/Fault Monitor Input | Accepts external clock signal (25kHz–50MHz); detects frequency deviation, stoppage, or jitter beyond tolerance. |
| SCL / SDA | I²C Bus Interface | Standard bidirectional I²C interface with CRC and programmable slave address for configuration and status readback. |
| RESET1 / RESET2 | Configurable Reset Outputs | Two open-drain outputs independently programmable for reset assertion timing, polarity, and fault-trigger conditions. |
| WDI | Watchdog Input | Optional external watchdog trigger input for simple windowed timeout detection independent of I²C. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Power Sequence Recorder (FPSR) | Stores timestamped power-up/down events per monitored rail, enabling root-cause analysis of sequencing failures in multi-rail SoC power domains. |
| Challenge/Response Watchdog | Prevents firmware lockup by requiring dynamic response to I²C-based challenges - immune to static bus glitches or stuck code patterns. |
| OTP Configuration with ECC | Factory-programmed settings retained across power cycles with error-correcting code and reload capability - eliminates external configuration EEPROM and improves startup reliability. |
| AEC-Q100 Grade 0 Qualification | Validated for operation from −40°C to +125°C ambient, meeting stress-test requirements for automotive safety-critical ECUs. |
| Dual Programmable RESET Outputs | Independent control of reset timing, assertion level, and fault-source mapping - supports hierarchical reset trees in complex domain controllers. |
Applications
| ADAS Domain Controller Supervision | Autonomous Driving SoC Monitoring |
|---|---|
Use Scenario: Real-time monitoring of multiple voltage rails (e.g., 1.8V core, 3.3V I/O, 5V sensor supply) in radar/vision fusion ECUs. IC Role / Device Role / Timing Role: Centralized power-system monitor providing ASIL D-compliant fault detection, sequencing validation, and watchdog supervision. Use Value: Reduces BOM count by replacing discrete supervisors and simplifies diagnostic coverage for ISO 26262 FMEDA. | Use Scenario: Supervising heterogeneous compute platforms (e.g., NVIDIA Orin, Qualcomm Ride) where rail stability, clock integrity, and boot sequencing are safety-critical. IC Role / Device Role / Timing Role: Fault recorder and watchdog coordinator interfacing with host SoC via I²C to report power anomalies and enforce safe state transitions. Use Value: Enables deterministic fault logging and time-stamped event correlation across power domains and clock sources. |
| Remote Sensor Module Power Management | Automotive Gateway Power Supervision |
Use Scenario: Compact sensor nodes (e.g., LiDAR front-end, ultrasonic parking modules) requiring ultra-low quiescent current and minimal external components. IC Role / Device Role / Timing Role: Single-chip power supervisor with integrated FPSR and clock monitor - replaces discrete RC timers and comparators. Use Value: Achieves 8µA power-down current and eliminates need for external timing capacitors or voltage dividers. | Use Scenario: Multi-processor gateways managing CAN FD, Ethernet AVB, and LIN subsystems with strict power sequencing and fail-safe reset coordination. IC Role / Device Role / Timing Role: Dual RESET generator with independent timing control and fault-source attribution for subsystem isolation. Use Value: Supports selective reset of communication stacks without affecting main application processor, improving system availability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-system monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX22520ATP+T | Four-input monitor with integrated isolated data/power interface; lacks FPSR and clock monitor; lower integration density. | Targeted at isolated communication interfaces (e.g., isolated CAN), not full-domain power supervision. | Choose when galvanic isolation is required but advanced sequencing and clock monitoring are unnecessary. |
| TPS65941312RGER | PMIC with integrated buck/boost converters; includes basic voltage monitors but no FPSR, clock monitor, or challenge/response watchdog. | Designed for SoC power delivery, not standalone supervision; limited diagnostic depth and ASIL support. | Choose when primary need is regulated power conversion with secondary monitoring, not safety-certified fault recording. |
Compared with MAX20484CATEA/VY+T, MAX22520ATP+T trades sequencing and clock supervision for isolation capability, while TPS65941312RGER prioritizes power conversion over diagnostic fidelity - neither matches the ASIL D-compliant, timestamped, multi-rail supervision architecture of MAX20484CATEA/VY+T.
Availability
MAX20484CATEA/VY+T is available at Aetrix Electronics and suitable for ADAS domain controllers, autonomous driving SoC supervision, and remote sensor modules requiring stable component supply, long-term automotive qualification, and ASIL D-ready diagnostics.
Supply support for MAX20484CATEA/VY+T 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+T belongs to Analog Devices' automotive-grade power-supervision SoC family, engineered specifically for ISO 26262-compliant power-system monitoring in safety-critical ADAS and autonomous driving platforms.
FAQ
What is the ASIL D compliance scope of the MAX20484CATEA/VY+T?
The MAX20484CATEA/VY+T achieves ASIL D compliance when used with a supervisory controller per ISO 26262 requirements. It delivers diagnostic coverage through built-in CRC on I²C, OTP with ECC, fault recording, and dual independent RESET outputs. All internal monitoring paths, watchdog logic, and clock/fault detection circuits are designed to meet ASIL D FMEDA targets. MAX20484CATEA/VY+T documentation includes safety manual and FIT rate data for integration into safety analyses.
Does the MAX20484CATEA/VY+T support custom voltage-monitor thresholds?
Yes, the MAX20484CATEA/VY+T supports programmable overvoltage thresholds from 102.5% to 110% and undervoltage thresholds from 90% to 97.5%, with ±0.8% accuracy and 0.5% step resolution. Thresholds are configured via I²C and stored in OTP memory with ECC. Each of the five INx inputs can be individually set, enabling tailored supervision for diverse rail voltages in a single MAX20484CATEA/VY+T device.
How does the Flexible Power Sequence Recorder (FPSR) function in the MAX20484CATEA/VY+T?
The FPSR in MAX20484CATEA/VY+T captures and stores timestamped power-up and power-down events separately for each monitored rail (IN1–IN5). It logs transitions with microsecond resolution and supports sleep/standby sequences. Recorded data persists through power cycles and is readable via I²C. This enables forensic analysis of sequencing faults - for example, identifying which rail failed first during a brownout - directly within the MAX20484CATEA/VY+T without external logic analyzers.
Can the MAX20484CATEA/VY+T monitor external clock signals outside the MCU?
Yes, the MAX20484CATEA/VY+T includes a dedicated CLKIN pin that accepts external clock signals from 25kHz to 50MHz. It continuously validates frequency, detects stoppage, and identifies excessive jitter or deviation beyond user-defined tolerance windows. This capability allows it to supervise reference clocks for SoCs, FPGAs, or sensor interfaces independently of host software - a key feature for fail-operational systems where clock integrity must be verified even if the main processor is unresponsive.
What packaging and assembly features make the MAX20484CATEA/VY+T suitable for automotive production?
The MAX20484CATEA/VY+T uses a 3mm × 3mm, 16-pin side-wettable TQFN-EP package with exposed thermal pad. Side-wettable flanks enable automated optical inspection (AOI) of solder joints - a critical requirement for zero-defect automotive manufacturing. It is AEC-Q100 Grade 0 qualified (−40°C to +125°C), undergoes HTOL and temperature cycling per automotive standards, and ships with full traceability and lot-level PPAP documentation - all essential for Tier 1 production deployment of MAX20484CATEA/VY+T.
MAX20484CATEA/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Power Supply Monitor
- Number of Voltages Monitored:
- 5
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- -
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-SW-TQFN (3x3)
MAX20484CATEA/VY+T FAQ
1.How can I place an order for MAX20484CATEA/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20484CATEA/VY+T 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+T reliable?
The price and inventory of MAX20484CATEA/VY+T 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+T is usually 5 days.
3.What payment methods are accepted for MAX20484CATEA/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20484CATEA/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20484CATEA/VY+T?
MAX20484CATEA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20484CATEA/VY+T 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+T?
For technical support, including MAX20484CATEA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20484CATEA/VY+T requirements.
6.How does Aetrix verify that MAX20484CATEA/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20484CATEA/VY+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX20484CATEA/VY+T?
All MAX20484CATEA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20484CATEA/VY+T, 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+T part is unused and in its original packaging.
Return procedure for MAX20484CATEA/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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