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Analog Devices Inc./Maxim Integrated MAX16005ATE+
- Part No.:
- MAX16005ATE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX16005ATE+.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 16TQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX16005ATE+ from Maxim Integrated is a low-voltage, hex-voltage microprocessor supervisor IC in a 16-pin TSSOP package, monitoring six independent supply rails (IN1–IN6) with fixed thresholds for 3.3V, 2.5V, 1.8V, and adjustable down to 0.4V. It features an independent watchdog output (WDO), 1.235V reference output (REF), and open-drain outputs with internal 30µA pullups-designed for multivoltage ASICs and server power sequencing.
For engineers reviewing the MAX16005ATE+ datasheet, MAX16005ATE+ pinout, MAX16005ATE+ application, or MAX16005ATE+ equivalent, key selection criteria include its six-rail monitoring capability, independent WDO assertion on watchdog timeout (1.6s typ), REF accuracy (±2.9mV over temp), reset timeout adjustability via SRT capacitor, and guaranteed operation down to VCC = 1V in industrial temperature range (−40°C to +125°C).
Technical Context
The MAX16005ATE+ implements a dual-output supervisory architecture: RESET asserts when any monitored voltage falls below threshold or MR is pulled low, with a minimum 140ms timeout (internally set or capacitor-adjustable); WDO provides dedicated watchdog status without reset coupling. Its REF output delivers a stable 1.235V ±0.035V (0–40µA load) for margin testing or ADC reference use.
All six IN_ inputs support selectable 5% or 10% threshold tolerance via TOL pin, and each supports hysteresis (0.5% of VTH). The watchdog timer clears on any WDI edge and has no startup delay-unlike MAX16001/2/4/6/7-making it suitable for fast-recovery systems requiring immediate watchdog validation after power-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Monitored Voltages | Six independent rails (IN1–IN6) with fixed 3.3V/2.5V/1.8V and adjustable down to 0.4V thresholds |
| Reset Timeout | Min 140ms (SRT = VCC); adjustable up to ~3.92ms with 1500pF capacitor on SRT pin |
| Watchdog Timeout | 1.6s typical; no startup delay-immediate edge-triggered clearing on WDI transition |
| Reference Output | 1.235V ±0.035V (0–40µA load); line regulation <0.005%/V; load regulation <10Ω |
| Supply Current | 45–70µA at VCC = 2.0–5.5V; guaranteed operation down to VCC = 1.0V |
| Operating Temp | −40°C to +125°C; fully specified across range with <±0.1% threshold drift over temperature |
| Package | 16-pin TSSOP (5mm × 4.4mm); RoHS-compliant; exposed pad internally connected to GND |
Pinout & Package
MAX16005ATE+ is housed in a 16-pin TSSOP package (outline 21-0066, land pattern 90-0117) with exposed thermal pad (EP) internally tied to GND. Pin 1 is IN2; pin 16 is VCC. All outputs (OUT1–OUT6, RESET, WDO, REF) are open-drain with internal 30µA pullups to VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN2 | Second monitored input rail; threshold configurable via TOL pin (5% or 10%) |
| 2 | IN1 | Primary monitored input; supports fixed 3.3V/2.5V/1.8V or adjustable 0.4V thresholds |
| 3 | RESET | Active-low system reset output asserting when any IN_ fails or MR is asserted |
| 4 | MARGIN | Active-low deassert control: pulls all outputs high during margin testing regardless of IN_ states |
| 5 | IN5 | Fifth monitored rail; threshold matches IN1–IN4 configuration per part variant (e.g., MAX16005A) |
| 6 | IN4 | Fourth monitored rail; supports same threshold options as IN1–IN3 |
| 7 | VCC | Unmonitored supply input (2.0–5.5V); requires 0.1µF bypass capacitor to GND |
| 8 | GND | Ground reference; EP pad must be soldered to PCB ground plane for thermal management |
| 9 | IN3 | Third monitored rail; hysteresis = 0.5% of threshold voltage |
| 10 | IN6 | Sixth monitored rail; identical threshold flexibility and accuracy as IN1–IN5 |
| 11 | TOL | Threshold tolerance select: GND = 5%, VCC = 10%-applies uniformly to all IN_ inputs |
| 12 | MR | Active-low manual reset input; internal 20kΩ pullup to VCC; 1µs minimum pulse width |
| 13 | SRT | Reset timeout timing input; connect capacitor to GND to extend timeout beyond 140ms |
| 14 | WDI | Watchdog timer input; edge-sensitive (rising/falling); 100nA leakage; no startup delay |
| 15 | WDO | Independent active-low watchdog output; asserts on timeout, deasserts immediately on valid WDI edge |
| 16 | REF | Precision 1.235V reference output; sources up to 40µA with ±0.035V accuracy over full temp range |
Key Features
| Feature | Design Value |
|---|---|
| Independent watchdog output (WDO) | Enables separate watchdog signaling without affecting RESET state-critical for fault-isolation in redundant systems |
| Integrated 1.235V reference (REF) | Provides stable, low-drift reference for margin testing or ADC calibration-eliminates need for external precision reference |
| Capacitor-adjustable reset timeout | Supports precise power-up sequencing timing from 140ms to >3ms using single external capacitor on SRT pin |
| Open-drain outputs with internal 30µA pullups | Reduces BOM count by eliminating six external pullup resistors while maintaining compatibility with 5.5V-tolerant logic |
| Guaranteed operation down to VCC = 1.0V | Ensures correct logic state retention during brownout conditions-essential for fail-safe shutdown in industrial environments |
| Selectable 5%/10% threshold tolerance | Allows optimization for tight-tolerance systems (e.g., FPGA core rails) or relaxed margins (e.g., auxiliary supplies) |
Applications
| Storage Equipment | Servers |
|---|---|
Use Scenario: Monitoring multiple voltage rails (e.g., 3.3V I/O, 1.8V memory, 1.2V CPU core) in NVMe SSD controllers during hot-plug and power-cycle events. IC Role / Device Role / Timing Role: Hex-voltage supervisor providing synchronized RESET assertion and independent WDO for firmware watchdog validation. Use Value: Prevents corrupted writes during undervoltage by holding RESET until all rails stabilize; WDO enables host-side watchdog health reporting without interfering with reset timing. |
Use Scenario: Power sequencing and health monitoring for dual-socket server motherboards with 12+ supply domains including VRM outputs and BMC interfaces. IC Role / Device Role / Timing Role: Centralized six-rail monitor coordinating power-good signals and enabling margin testing via MARGIN pin during BIOS POST. Use Value: REF output serves as accurate reference for BMC ADC measurements; adjustable SRT allows tuning reset hold time to match slowest VRM ramp rate. |
| Networking Equipment | Multivoltage ASICs |
Use Scenario: Supervising 5V PHY, 3.3V MAC, 2.5V SerDes, and 1.8V DDR interface rails in 10G/25G Ethernet switches under thermal stress. IC Role / Device Role / Timing Role: Voltage supervisor with temperature-stable thresholds (±0.1% drift) and fast IN_ to RESET propagation (<20µs). Use Value: Ensures deterministic reset behavior across −40°C to +125°C ambient; TOL pin allows 5% tolerance on sensitive SerDes supplies and 10% on less critical rails. |
Use Scenario: Validating supply integrity during functional test and burn-in of custom ASICs with asymmetric rail requirements (e.g., 0.9V core, 1.2V I/O, 3.3V analog). IC Role / Device Role / Timing Role: Six-channel monitor supporting both fixed and adjustable thresholds-enabling one device to cover multiple ASIC variants. Use Value: Adjustable IN_ thresholds (down to 0.4V) accommodate next-gen low-voltage cores; REF output calibrates tester measurement channels in real time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16004ATE+ | Same 16-pin TSSOP package and six-rail monitoring, but lacks REF output and independent WDO-uses shared RESET for watchdog assertion | No dedicated reference or isolated watchdog signaling; unsuitable where REF or WDO independence is required | Select MAX16004ATE+ only if REF and WDO separation are unnecessary and cost reduction is prioritized |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only), no multi-rail capability, no REF or WDO; offers 200ms fixed reset timeout and lower quiescent current (1.1µA) | Only monitors one rail; cannot replace MAX16005ATE+ in multivoltage systems without adding multiple devices | Choose TPS3808G33DBVR for simple single-rail applications where ultra-low IQ and small SOT-23 size are critical |
Compared with MAX16004ATE+, MAX16005ATE+ adds essential system-level capabilities: a precision 1.235V REF for calibration and an independent WDO for fault isolation-making it uniquely suited for complex ASIC and server platforms where signal integrity and diagnostic visibility are design requirements.
Availability
MAX16005ATE+ 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 MAX16005ATE+ 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 industrial, computing, and communications markets.
The MAX16000–MAX16007 family was engineered specifically for multivoltage system supervision in space-constrained, thermally demanding environments-emphasizing rail count scalability, threshold flexibility, and integrated diagnostics like REF and WDO.
FAQ
What is the function of the REF pin on the MAX16005ATE+?
The REF pin on the MAX16005ATE+ delivers a precision 1.235V ±0.035V output, stable over temperature and load (0–40µA). It serves as a calibrated reference for margin testing, ADC calibration, or biasing analog circuitry-eliminating the need for an external voltage reference. This feature is unique to the MAX16005ATE+ within the MAX16000–MAX16007 family and is not present on MAX16004ATE+ or MAX16003ATE+.
Does the MAX16005ATE+ support adjustable reset timeout, and how is it configured?
Yes, the MAX16005ATE+ supports adjustable reset timeout via the SRT pin. Connecting a capacitor from SRT to GND sets the timeout period using the formula: Reset Timeout (s) = 2.06 × 10⁶ × CSRT (F). With CSRT = 1500pF, timeout is 2.43–3.92ms; leaving SRT tied to VCC yields the minimum 140ms. This configurability enables precise alignment with system power-up sequencing requirements across diverse board designs.
How does the watchdog functionality differ between MAX16005ATE+ and other members of the MAX16000–MAX16007 family?
The MAX16005ATE+ features an independent watchdog output (WDO) that asserts separately from RESET-unlike MAX16004ATE+, which ties watchdog timeout directly to RESET assertion. Additionally, MAX16005ATE+ has no 54s watchdog startup delay, enabling immediate edge-triggered clearing after power-up. This makes MAX16005ATE+ ideal for systems requiring rapid watchdog validation without compromising reset timing integrity.
Can the MAX16005ATE+ monitor voltages below 1.0V, and what is the lowest supported threshold?
Yes, the MAX16005ATE+ supports adjustable thresholds down to 0.4V (typical), with guaranteed operation across the full −40°C to +125°C range. When TOL = GND (5% tolerance), the adjustable threshold is 0.394V ±6mV; at TOL = VCC (10%), it is 0.372V ±6mV. This capability enables supervision of advanced low-voltage ASIC cores and next-generation processors operating below 1.0V.
What is the purpose of the MARGIN pin on the MAX16005ATE+, and how is it used in production testing?
The MARGIN pin on the MAX16005ATE+ is an active-low input that forces all outputs (OUT1–OUT6, RESET, WDO) into a high-impedance or deasserted state-regardless of monitored voltage conditions. During production testing, pulling MARGIN low enables margin testing by temporarily disabling supervision, allowing controlled voltage sweeps to verify rail stability and tolerance margins without triggering false resets or watchdog faults.
MAX16005ATE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 6
- Voltage - Threshold:
- 6 Selectable Threshold Combinations
- 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:
- 16-TQFN (4x4)
MAX16005ATE+ FAQ
1.How can I place an order for MAX16005ATE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16005ATE+ 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 MAX16005ATE+ reliable?
The price and inventory of MAX16005ATE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16005ATE+ is usually 5 days.
3.What payment methods are accepted for MAX16005ATE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16005ATE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16005ATE+?
MAX16005ATE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16005ATE+ 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 MAX16005ATE+?
For technical support, including MAX16005ATE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16005ATE+ requirements.
6.How does Aetrix verify that MAX16005ATE+ is sourced from the original manufacturer or authorized distributors?
All MAX16005ATE+ 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 MAX16005ATE+ meets industry standards.
7.What is the process for return or replacement of MAX16005ATE+?
All MAX16005ATE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16005ATE+, 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 MAX16005ATE+ part is unused and in its original packaging.
Return procedure for MAX16005ATE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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