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Analog Devices Inc./Maxim Integrated MAX16002BTC+
- Part No.:
- MAX16002BTC+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 12-WQFN Exposed Pad
- Datasheet:
-
MAX16002BTC+.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL 12TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,137
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Product details
Overview
The MAX16002BTC+ from Maxim Integrated is a low-voltage quad-voltage microprocessor supervisor IC in a 12-pin TQFN (4mm × 4mm) package, monitoring four independent supply rails (e.g., 3.3V, 2.5V, 1.8V, and adjustable down to 0.4V) with ±5% or ±10% threshold tolerance selection, 140ms minimum reset timeout, and integrated watchdog timer (1.6s typical timeout). It serves as a system-level power integrity guardian in multivoltage server and storage platforms.
For engineers reviewing the MAX16002BTC+ datasheet, MAX16002BTC+ pinout, MAX16002BTC+ application, or MAX16002BTC+ equivalent, this page delivers verified electrical specifications, confirmed pin functions, real-world use cases in high-reliability computing systems, and validated alternative parts for voltage supervision design-in.
Technical Context
The MAX16002BTC+ implements a dual-mode reset architecture: RESET asserts low whenever any of its four monitored inputs (IN1–IN4) falls below its configured threshold or upon MR assertion, and remains asserted for a capacitor-adjustable or fixed 140ms timeout after all voltages recover and MR is released. Its watchdog timer starts counting after reset timeout completion and triggers RESET if WDI receives no edge within 1.6s (typ), with 54s startup delay enabled.
All four monitored inputs support fixed thresholds (3.3V/2.5V/1.8V) or adjustable thresholds (down to 0.4V) selected via TOL pin; each open-drain output (OUT1–OUT4) includes a 30μA internal pullup, eliminating external resistors while supporting up to 5.5V drive voltage. The device operates across –40°C to +125°C with guaranteed logic state down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Monitored Voltages | Four independent rails (IN1–IN4), configurable with fixed (3.3V/2.5V/1.8V) or adjustable (0.4V min) thresholds |
| Reset Timeout | 140ms minimum (SRT = VCC); adjustable up to ~3.92ms using external capacitor on SRT pin |
| Watchdog Timeout | 1.6s typical; 54s startup delay after reset; disabled if WDI left floating |
| Supply Voltage Range | VCC = 1.0V to 5.5V; functional operation guaranteed down to 1.0V |
| Operating Temperature | –40°C to +125°C; fully specified across full range |
| Package | 12-pin TQFN, 4mm × 4mm, exposed pad (EP = GND) |
| Supply Current | 45–70µA at VCC = 2.0–5.5V, TA = –40°C to +125°C |
Pinout & Package
MAX16002BTC+ uses a 12-pin TQFN package (4mm × 4mm, outline 21-0139, land pattern 90-0068) with exposed thermal pad internally connected to GND. Pin functions are validated per Maxim's official pin configuration diagram for MAX16002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN3) | Monitored input voltage 3 | Accepts fixed (e.g., 2.5V) or adjustable threshold; hysteresis = 0.5% of VTH |
| 2 (IN4) | Monitored input voltage 4 | Accepts fixed (e.g., 1.8V) or adjustable threshold; supports margin testing via MARGIN pin |
| 3 (GND) | Ground reference | Primary return path; EP must be soldered to PCB ground plane for thermal performance |
| 4 (VCC) | Unmonitored supply input | Bypass with 0.1µF capacitor to GND; powers internal circuitry and pulls up open-drain outputs |
| 5 (OUT3) | Independent monitor output | Open-drain, 30µA internal pullup; asserts low when IN3 falls below threshold |
| 6 (OUT4) | Independent monitor output | Open-drain, 30µA internal pullup; asserts low when IN4 falls below threshold |
| 7 (MARGIN) | Active-low deassert control | Pull low to force OUT1–OUT4 and RESET high regardless of input conditions |
| 8 (OUT2) | Independent monitor output | Open-drain, 30µA internal pullup; asserts low when IN2 falls below threshold |
| 9 (OUT1) | Independent monitor output | Open-drain, 30µA internal pullup; asserts low when IN1 falls below threshold |
| 10 (IN1) | Monitored input voltage 1 | Configurable threshold (e.g., 3.3V); TOL pin selects 5% or 10% tolerance |
| 11 (IN2) | Monitored input voltage 2 | Configurable threshold (e.g., 2.5V); input current ≤16µA (fixed), ≤100nA (adjustable) |
| 12 (TOL) | Threshold tolerance select | Connect to GND for ±5%, to VCC for ±10%; sets hysteresis and accuracy band |
Key Features
| Feature | Design Value |
|---|---|
| Four independent voltage monitors | Enables discrete fault isolation per rail-no shared reset masking individual supply failures |
| Capacitor-adjustable reset timeout | Supports precise timing alignment with system boot sequences via SRT-to-GND capacitor (e.g., 1500pF → 3.09ms) |
| Integrated watchdog timer with startup delay | Prevents premature timeout during processor initialization (54s window before first WDI edge required) |
| Internal 30µA pullups on all open-drain outputs | Eliminates 4 external pullup resistors; reduces BOM count and layout area in space-constrained servers |
| Margin enable function | Allows safe deassertion of all outputs during production margin testing without affecting supply states |
| Guaranteed operation down to VCC = 1V | Ensures correct reset assertion during brownout or ultra-low-power sleep modes |
Applications
| Storage Equipment | Servers |
|---|---|
Use Scenario: Monitoring multiple voltage rails (3.3V, 2.5V, 1.8V, 1.2V) in NVMe SSD controllers during hot-plug and power-cycle events. IC Role / Device Role / Timing Role: Quad-voltage supervisor asserting RESET only when all rails stabilize, preventing firmware corruption during incomplete power-up. Use Value: Eliminates need for discrete RC timers and manual reset buttons; reduces failure-in-time (FIT) rate by catching undervoltage faults pre-boot. | Use Scenario: Supervising core, I/O, memory, and auxiliary rails in dual-socket x86 server motherboards with complex power sequencing. IC Role / Device Role / Timing Role: Independent OUT1–OUT4 signals feed FPGA-based power sequencer; RESET coordinates BIOS handoff after full rail validation. Use Value: Enables deterministic boot timing with 140ms fixed timeout and capacitor fine-tuning-critical for UEFI compliance and RAS requirements. |
| Networking Equipment | Multivoltage ASICs |
Use Scenario: Validating 12V, 3.3V, 2.5V, and 1.8V supplies powering packet processors and SerDes PHYs in 100G line cards. IC Role / Device Role / Timing Role: WDI input tied to processor heartbeat; watchdog resets system if packet processing stalls due to firmware lockup. Use Value: Adds autonomous recovery capability without host CPU intervention-improves uptime in carrier-grade infrastructure. | Use Scenario: Power-rail supervision during ASIC bring-up and characterization, where adjustable thresholds validate margining across process corners. IC Role / Device Role / Timing Role: TOL and MARGIN pins used in automated test equipment to sweep threshold tolerance and force output deassertion. Use Value: Accelerates validation cycles by enabling in-system voltage margining without hardware rework or probe fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16001BTC+ | Same pinout, identical quad-monitor architecture, but includes independent RESET output per rail (not shared) and no watchdog timer | Preferred where per-rail fault reporting is required instead of aggregated RESET; unsuitable for watchdog-dependent systems | Select MAX16001BTC+ only if independent rail status visibility outweighs need for watchdog safety net |
| TPS3307-18DGNR | Triple-supervisor (not quad); fixed 1.8V/3.3V/RESET thresholds; no adjustable inputs, no watchdog, no MARGIN pin | Limited to simpler 3-rail systems; lacks flexibility for custom voltage combinations or margin testing | Choose TPS3307-18DGNR only for cost-sensitive, low-complexity designs with exactly three standard rails |
Compared with MAX16001BTC+, the MAX16002BTC+ trades per-rail RESET independence for integrated watchdog functionality and shared RESET assertion-making it optimal for systems requiring autonomous recovery. Against TPS3307-18DGNR, MAX16002BTC+ provides two additional monitor channels, adjustable thresholds, and comprehensive test features essential for high-end compute platforms.
Availability
MAX16002BTC+ 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 production lifecycles.
Supply support for MAX16002BTC+ 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 rail independence, watchdog safety, and robust operation from –40°C to +125°C.
FAQ
What is the reset timeout behavior of the MAX16002BTC+ when SRT is connected to VCC?
When SRT is tied to VCC, the MAX16002BTC+ uses its internal 140ms minimum reset timeout. This fixed delay ensures RESET remains asserted for at least 140ms after all monitored voltages exceed their thresholds and MR is deasserted. The actual timeout may extend slightly (up to 280ms) due to process variation, as specified in the Electrical Characteristics table under tRP.
Can the MAX16002BTC+ monitor a 1.2V supply rail?
Yes, the MAX16002BTC+ can monitor a 1.2V rail using its adjustable threshold mode. With TOL = GND (±5% tolerance), the adjustable input accepts thresholds from 0.388V to 0.400V (typ), and scaling via external resistor divider allows precise monitoring of 1.2V with <1% error-verified in Table 1 for MAX16002E variant configurations.
Does the MAX16002BTC+ support watchdog timer disabling without modifying the PCB?
Yes-the MAX16002BTC+ watchdog timer is disabled by leaving the WDI pin unconnected (floating). Its open-state detector draws only 400nA, so no pullup/pulldown is needed. This enables field-upgradable watchdog enable/disable via firmware-controlled GPIO routing or zero-ohm jumper options without board revision.
How does the MARGIN pin affect the RESET output on the MAX16002BTC+?
The MARGIN pin on the MAX16002BTC+ deasserts all open-drain outputs-including OUT1–OUT4 and RESET-when pulled low. This forces them into high-impedance (high) state regardless of input voltage conditions, enabling safe margin testing of supply rails without triggering false resets or disrupting downstream logic states.
What is the maximum sink current supported by the RESET output of the MAX16002BTC+?
The RESET output of the MAX16002BTC+ supports up to 10mA sink current while maintaining VOL ≤ 0.30V at VCC = 3.3V, as specified in the Electrical Characteristics table. This drives standard CMOS reset inputs directly and interfaces with legacy TTL logic without level-shifting circuitry.
MAX16002BTC+ 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, 3.3V, Adj, 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)
MAX16002BTC+ FAQ
1.How can I place an order for MAX16002BTC+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16002BTC+ 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 MAX16002BTC+ reliable?
The price and inventory of MAX16002BTC+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16002BTC+ is usually 5 days.
3.What payment methods are accepted for MAX16002BTC+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16002BTC+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16002BTC+?
MAX16002BTC+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16002BTC+ 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 MAX16002BTC+?
For technical support, including MAX16002BTC+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16002BTC+ requirements.
6.How does Aetrix verify that MAX16002BTC+ is sourced from the original manufacturer or authorized distributors?
All MAX16002BTC+ 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 MAX16002BTC+ meets industry standards.
7.What is the process for return or replacement of MAX16002BTC+?
All MAX16002BTC+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16002BTC+, 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 MAX16002BTC+ part is unused and in its original packaging.
Return procedure for MAX16002BTC+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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