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Analog Devices Inc./Maxim Integrated MAX16002ATC+
- Part No.:
- MAX16002ATC+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 12-WQFN Exposed Pad
- Datasheet:
-
MAX16002ATC+.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL 12TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,023
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Product details
Overview
The MAX16002ATC+ from Maxim Integrated is a quad-voltage microprocessor supervisor IC in a 12-pin TQFN (4mm × 4mm) package, monitoring four independent supply rails (e.g., 3.3V, 2.5V, adjustable, 1.8V) with fixed or 5%/10% tolerance thresholds, featuring a watchdog timer (1.6s timeout), 140ms min reset timeout, and open-drain outputs with internal 30µA pullups - used for power sequencing and fault detection in multivoltage server and storage systems.
For engineers reviewing the MAX16002ATC+ datasheet, MAX16002ATC+ pinout, MAX16002ATC+ application, or MAX16002ATC+ equivalent, key selection criteria include its quad-supply monitoring capability, integrated watchdog with startup delay, capacitor-adjustable reset timeout, manual reset and margin enable inputs, and guaranteed operation down to VCC = 1V in automotive-grade temperature range (–40°C to +125°C).
Technical Context
The MAX16002ATC+ implements a voltage-monitoring architecture with four independent comparator-based input channels (IN1–IN4), each configurable via TOL pin for 5% or 10% threshold tolerance. Its RESET output asserts when any monitored voltage falls below its threshold or MR is pulled low, holding for ≥140ms after recovery.
It integrates a watchdog timer with 1.6s typical timeout and 54s startup delay, disabled by leaving WDI floating. All outputs are open-drain with internal 30µA pullups, eliminating external resistors while supporting up to 5.5V drive voltage - enabling direct interfacing with diverse logic families across complex ASIC power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Monitored Voltages | Four independent rails: e.g., 3.3V, 2.5V, adjustable (≥0.4V), 1.8V - supports mixed-voltage ASIC and FPGA power domains |
| Reset Timeout | Min 140ms (internally set); adjustable up to seconds via external capacitor on SRT pin - ensures reliable boot sequencing |
| Watchdog Timeout | 1.12–2.40s (typ 1.6s) with 35–72s startup delay - prevents lockup during firmware initialization |
| Supply Voltage Range | VCC = 1.0V to 5.5V - guarantees correct logic state even during brownout conditions |
| Operating Temperature | –40°C to +125°C - qualified for industrial and extended-temperature embedded applications |
| Output Type | Open-drain with internal 30µA pullup - eliminates need for external pullup resistors, reduces BOM count |
| Threshold Accuracy | ±1.5% over temp (e.g., 3.3V threshold = 3.053V typ at TOL = GND) - enables precise undervoltage detection |
Pinout & Package
Package: 12-pin TQFN (4mm × 4mm), exposed pad (EP) internally connected to GND - provides low thermal resistance for high-reliability operation in dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 10, 11 | IN1–IN4 | Four independent monitored voltage inputs; thresholds configurable via TOL pin (5% or 10% tolerance) |
| 3 | GND | Ground reference for all analog comparators and digital logic - must connect EP to ground plane |
| 4 | VCC | Unmonitored bias supply (1.0–5.5V); requires 0.1µF bypass capacitor to GND |
| 7 | MARGIN | Active-low manual deassert input - pulls all outputs high regardless of input voltages during margin testing |
| 12 | TOL | Threshold tolerance select: GND = 5%, VCC = 10% - sets hysteresis and accuracy for all IN_ inputs |
| 9 | MR | Active-low manual reset input - asserts RESET low; internal 20kΩ pullup to VCC |
| 8 | SRT | Set reset timeout input - connect capacitor to GND to extend timeout beyond 140ms (tRP = 2.06MΩ × CSRT) |
| 6 | RESET | Active-low open-drain reset output - asserts if any IN_ fails or MR is asserted; internal 30µA pullup |
| 5 | WDI | Watchdog timer input - edge-triggered; left floating disables watchdog; 400nA leakage enables low-power monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent voltage monitors | Enables simultaneous supervision of CPU core, I/O, memory, and auxiliary rails without external comparators |
| Capacitor-adjustable reset timeout | Supports system-specific boot timing requirements from 140ms to >1s via single external capacitor |
| Integrated watchdog with startup delay | 54s initial window prevents false resets during slow-boot firmware execution before watchdog activation |
| Internal 30µA output pullups | Eliminates four external pullup resistors, reducing layout area and component cost in space-constrained designs |
| Margin enable function | Allows safe deassertion of all outputs during production voltage-margin testing without altering power rail behavior |
Applications
| Storage Equipment | Servers |
|---|---|
Use Scenario: Monitoring multiple power rails (3.3V, 2.5V, 1.8V, adjustable) in NVMe SSD controllers and RAID controller boards. IC Role / Device Role / Timing Role: Quad-voltage supervisor ensuring clean power-up sequencing and detecting undervoltage faults before host interface initialization. Use Value: Prevents data corruption by asserting RESET until all rails stabilize within ±5% tolerance, leveraging internal pullups to minimize board real estate. | Use Scenario: Supervising CPU core, memory, PCIe, and management controller supplies in 1U/2U rack servers. IC Role / Device Role / Timing Role: Centralized reset generator with watchdog, coordinating boot readiness across heterogeneous voltage domains. Use Value: Guarantees correct logic state down to VCC = 1V and operates reliably at +125°C ambient - critical for high-density thermal environments. |
| Networking Equipment | Multivoltage ASICs |
Use Scenario: Power integrity monitoring in 10G/25G Ethernet switch line cards with multiple SerDes and PHY supplies. IC Role / Device Role / Timing Role: Fault-detection node triggering system-level reset upon any rail collapse, with manual reset (MR) for field service recovery. Use Value: Open-drain RESET output interfaces directly with baseboard management controllers (BMCs) without level-shifting components. | Use Scenario: Real-time voltage supervision during ASIC bring-up and production test, including margin testing under load variation. IC Role / Device Role / Timing Role: Margin enable (MARGIN) input allows temporary deassertion of all outputs to verify ASIC functionality at ±5% supply deviation. Use Value: Eliminates need for external logic to gate reset signals during test - simplifies test fixture design and improves repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16001ATC+ | Same 12-pin TQFN package and pinout; identical quad-monitoring, watchdog, and reset architecture - differs only in factory-programmed threshold configuration (e.g., MAX16001A = 3.3V/2.5V/ADJ/1.8V like MAX16002A) | No functional difference in circuit integration; selected based on exact threshold variant required for target rail voltages | Choose MAX16001ATC+ only if matching the same threshold variant (e.g., "A" suffix) is confirmed in design documentation |
| TPS3307-33D | Triple-supply monitor (not quad); no integrated watchdog; fixed 3.3V/3.0V/2.5V thresholds; 20-pin TSSOP package - lacks MARGIN, SRT, and WDI pins | Requires external watchdog IC and additional voltage monitor for fourth rail - increases BOM and layout complexity | Select only when quad monitoring and watchdog are not required, and footprint compatibility with TSSOP is acceptable |
Compared with MAX16001ATC+, the MAX16002ATC+ offers identical functionality and pin compatibility but targets different factory-configured threshold variants; versus TPS3307-33D, it delivers integrated quad monitoring and watchdog in a smaller TQFN footprint - reducing total solution size and component count.
Availability
MAX16002ATC+ is available at Aetrix Electronics and suitable for storage equipment, servers, and networking/telecommunication equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX16002ATC+ 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, computing, and communications applications.
The MAX16000–MAX16007 family was engineered specifically for multivoltage system supervision in high-reliability computing infrastructure - emphasizing low quiescent current, wide temperature operation, and integration of reset, watchdog, and margin functions in compact packages.
FAQ
What is the operating voltage range for the MAX16002ATC+?
The MAX16002ATC+ operates from VCC = 1.0V to 5.5V. Its internal comparators and logic remain functional and guarantee correct output states down to 1.0V, enabling robust operation during brownout conditions. This specification is validated across the full –40°C to +125°C temperature range and is not dependent on external components.
How does the watchdog timer on the MAX16002ATC+ behave during power-up?
The MAX16002ATC+ watchdog timer enters a 54-second startup delay after reset assertion, allowing firmware sufficient time to initialize before watchdog monitoring begins. During this period, no WDI transitions are required. After startup, the timer times out after 1.12–2.40s (typ 1.6s) if WDI remains static - resetting the system unless cleared by an edge transition.
Can the reset timeout of the MAX16002ATC+ be adjusted, and how?
Yes. The MAX16002ATC+ reset timeout is internally set to a minimum of 140ms when SRT is tied to VCC. To extend it, connect an external capacitor between SRT and GND. The timeout follows tRP = 2.06 × 10⁶ Ω × CSRT (F), enabling precise adjustment - e.g., 100nF yields ~206ms, and 1500pF yields ~3.09ms per datasheet specifications.
What is the purpose of the MARGIN pin on the MAX16002ATC+?
The MARGIN pin on the MAX16002ATC+ is an active-low input that forces all output signals (including RESET) into a high-impedance or deasserted state, regardless of monitored input voltages. This enables safe voltage margin testing - for example, lowering a supply rail by ±5% while verifying ASIC functionality without triggering spurious resets.
Does the MAX16002ATC+ require external pullup resistors on its outputs?
No. The MAX16002ATC+ features internal 30µA pullup currents on all open-drain outputs (RESET and monitored OUTx pins), eliminating the need for external pullup resistors. Each output can also be driven by an external voltage up to 5.5V, supporting mixed-voltage interface scenarios without level shifters.
MAX16002ATC+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- 1.8V, 2.5V, 3.3V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TQFN (4x4)
MAX16002ATC+ FAQ
1.How can I place an order for MAX16002ATC+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16002ATC+ 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 MAX16002ATC+ reliable?
The price and inventory of MAX16002ATC+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16002ATC+ is usually 5 days.
3.What payment methods are accepted for MAX16002ATC+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16002ATC+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16002ATC+?
MAX16002ATC+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16002ATC+ 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 MAX16002ATC+?
For technical support, including MAX16002ATC+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16002ATC+ requirements.
6.How does Aetrix verify that MAX16002ATC+ is sourced from the original manufacturer or authorized distributors?
All MAX16002ATC+ 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 MAX16002ATC+ meets industry standards.
7.What is the process for return or replacement of MAX16002ATC+?
All MAX16002ATC+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16002ATC+, 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 MAX16002ATC+ part is unused and in its original packaging.
Return procedure for MAX16002ATC+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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