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Analog Devices Inc./Maxim Integrated MAX16056ATA17+T
- Part No.:
- MAX16056ATA17+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16056ATA17+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,440
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Product details
Overview
MAX16056ATA17+T from Analog Devices is an ultra-low-power microprocessor supervisory IC with factory-trimmed 1.665V reset threshold, 125nA typical supply current, capacitor-adjustable reset timeout (14.18ms with 2700pF), and integrated watchdog timer. It operates from 1.1V to 5.5V and is used in battery-powered medical monitors and portable instrumentation to ensure reliable power-on reset and system fault recovery.
For engineers reviewing the MAX16056ATA17+T datasheet, MAX16056ATA17+T pinout, MAX16056ATA17+T application, or MAX16056ATA17+T equivalent, this page delivers verified technical context, automotive-grade (-40°C to +125°C) operating specs, reset/watchdog timing design values, and real-world selection guidance for low-power embedded supervision.
Technical Context
The MAX16056ATA17+T implements a precision voltage monitor with ±2.5% threshold accuracy over temperature and hysteresis of 0.5%. Its internal ramp-based timing architecture uses SRT and SWT pins to set reset and watchdog timeouts via external capacitors, enabling flexible delay configuration without trimming resistors.
It integrates a watchdog timer with dual-mode operation (normal/extended via WDS input), capacitor-open detection on SWT, and optional watchdog disable by grounding SWT. The push-pull RESET output guarantees validity down to VCC = 1.1V and supports manual reset assertion with 250ns MR-to-RESET delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 125nA typical at VCC = 1.8V, -40°C to +125°C - enables multi-year battery life in always-on medical sensors |
| Reset Threshold | 1.665V (typ), ±2.5% over -40°C to +125°C - factory-trimmed for stable brownout detection in low-voltage systems |
| Reset Timeout | 14.18ms (typ) with 2700pF on SRT - configurable from ~10ms to >2s using 39pF–4.7µF ceramic capacitor |
| Watchdog Timeout | 6.4ms (typ) base period, extendable ×128 via WDS - supports software execution monitoring from milliseconds to 217s |
| Operating Voltage | 1.1V to 5.5V - compatible with Li-ion, coin-cell, and multi-rail embedded systems |
| Temperature Range | -40°C to +125°C - qualified for automotive and industrial under-hood/enclosure deployment |
| Reset Output Type | Push-pull - eliminates external pull-up, simplifies interface to µP reset inputs requiring active-low assertion |
Pinout & Package
MAX16056ATA17+T is housed in a 3mm × 3mm, 8-pin TDFN-EP package with exposed pad (EP) for thermal enhancement. Pin 1 is marked with dot; EP must be connected to GND per datasheet recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RESET | Active-low push-pull reset output | Asserts low during VCC undervoltage, MR low, or watchdog timeout; holds low for tRP after recovery |
| 2 GND | Ground reference | Common return for all internal circuits and external capacitors (SRT, SWT) |
| 3 SWT | Watchdog timeout capacitor input | Connects to GND via CSWT to set base watchdog period; open detect ensures fault-safe behavior |
| 4 MR | Manual reset input | CMOS-compatible active-low input; no internal pullup - requires external VCC tie if unused |
| 5 SRT | Reset timeout capacitor input | Connects to GND via CSRT to define reset deassertion delay; supports wide timing range with X7R ceramic |
| 6 WDS | Watchdog select input | Ground = normal mode (tWD); VCC = extended mode (tWD ×128); transition clears watchdog counter |
| 7 WDI | Watchdog input | Falling edge resets watchdog timer; pulse width ≥150ns required; toggled by host µP to prevent timeout |
| 8 VCC | Power supply input | Monitored supply rail; bypass with 0.1µF ceramic to GND; valid operation from 1.1V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 125nA typical supply current enables >10-year battery life in glucose monitors and portable meters |
| Capacitor-adjustable tRP/tWD | Eliminates precision resistors; allows field-tunable reset and watchdog delays using low-cost X7R ceramics |
| Watchdog capacitor open detect | Prevents silent failure - asserts continuous RESET if SWT connection opens or CSWT < 470pF |
| Transient immunity | Withstands 100mV VCC glitches ≤40µs duration without spurious reset, improving robustness in noisy environments |
| VCC = 1.1V RESET validity | Guarantees functional reset assertion even during deep brownout, ensuring µP never executes invalid code |
Applications
| Glucose Monitoring Systems | Patient Vital Sign Monitors |
|---|---|
Use Scenario: Continuous glucose sensing with intermittent wireless transmission and sleep/wake cycles. IC Role / Device Role / Timing Role: Supervises main MCU supply (1.8V/3.3V), triggers reset on battery sag, and enforces watchdog timeout if firmware hangs during sensor calibration. Use Value: Prevents erroneous glucose readings due to undervoltage-induced MCU lockup; extends coin-cell life via nanoamp quiescent current. |
Use Scenario: Portable ECG/SpO₂ devices operating from single-cell Li-ion with strict safety-critical boot integrity requirements. IC Role / Device Role / Timing Role: Monitors 3.3V system rail, asserts reset during power-up sequencing, and validates manual reset button press with glitch rejection. Use Value: Ensures FDA-compliant power-on self-test execution; eliminates need for external RC timing networks. |
| Smart Utility Meters | HVAC Environmental Sensors |
Use Scenario: AMI meters deployed in outdoor enclosures experiencing wide temperature swings and transient-rich AC line coupling. IC Role / Device Role / Timing Role: Provides brownout protection for metrology SoC, adjusts reset timeout via SRT capacitor to accommodate slow LDO startup. Use Value: Maintains meter accuracy across -40°C to +125°C; rejects 100mV/40µs transients induced by relay switching. |
Use Scenario: Battery-powered CO₂/temperature/humidity nodes in commercial HVAC ducts with infrequent wake-ups. IC Role / Device Role / Timing Role: Controls system power via RESET-driven p-MOSFET; uses watchdog to recover from firmware stalls during sensor polling. Use Value: Reduces average system current to near-zero during sleep; enables 5+ year battery life with no maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16057ATT17+T | 6-pin TDFN, no watchdog timer, same 1.665V threshold and push-pull RESET | Suitable where watchdog functionality is unnecessary and board space is constrained | Select when system-level fault recovery relies solely on VCC monitoring and manual reset |
| TPS3808G16DBVR | Fixed 1.6V threshold, 1.8µA ICC, no capacitor-adjustable timing, SOT-23-6 package | Lower integration - lacks watchdog, adjustable timeout, and transient immunity specs | Choose only for cost-sensitive, non-automotive designs where 1.6V threshold tolerance and µA-level current suffice |
Compared with MAX16056ATA17+T, MAX16057ATT17+T reduces footprint and BOM count by removing watchdog circuitry, while TPS3808G16DBVR trades nano-power operation and design flexibility for lower unit cost and simpler layout - neither matches the full feature set or automotive qualification of the MAX16056ATA17+T.
Availability
MAX16056ATA17+T is available at Aetrix Electronics and suitable for glucose monitors, patient vital sign equipment, and smart utility meters requiring stable component supply with guaranteed automotive-grade (-40°C to +125°C) performance and long-term lifecycle support.
Supply support for MAX16056ATA17+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 industrial, automotive, communications, and healthcare markets since 1965.
The MAX16056–MAX16059 family was designed specifically for ultra-low-power, high-reliability supervision in battery-critical medical and automotive applications - emphasizing nanoamp current, factory-trimmed thresholds, and capacitor-programmable timing.
FAQ
What is the exact reset threshold voltage of MAX16056ATA17+T?
The MAX16056ATA17+T has a factory-trimmed nominal reset threshold of 1.665V, with ±1.5% tolerance at +25°C and ±2.5% over the full -40°C to +125°C operating range. This value corresponds to the "17" suffix per Table 1 in the datasheet and is laser-trimmed during production for high accuracy without external components.
Does MAX16056ATA17+T support watchdog timer disable?
Yes, MAX16056ATA17+T supports watchdog disable by connecting the SWT pin directly to GND. When SWT is grounded, the watchdog function is disabled and the device operates solely as a reset supervisor. No additional logic or configuration is required - this is a hardware-level disable per the datasheet's Applications Information section.
What capacitor value sets the standard 14.18ms reset timeout for MAX16056ATA17+T?
A 2700pF ceramic capacitor (X7R dielectric) connected between the SRT pin and GND yields a typical reset timeout of 14.18ms for MAX16056ATA17+T. This value is explicitly listed in the Electrical Characteristics table and validated in Table 2 of the datasheet for use with the formula tRP = 5.15 × 10⁶ × CSRT (seconds).
Can MAX16056ATA17+T operate reliably at 1.2V supply voltage?
Yes, MAX16056ATA17+T is fully specified to operate at VCC = 1.2V across the -40°C to 0°C temperature range and guarantees valid RESET assertion down to VCC = 1.1V. At 1.2V, supply current remains within 132–185nA (typ–max), and reset threshold accuracy holds to ±2.5%, making it suitable for ultra-low-voltage energy harvesting systems.
Is the exposed pad (EP) on MAX16056ATA17+T required to be connected to ground?
Yes, the exposed pad (EP) on MAX16056ATA17+T must be connected to GND per the datasheet's Pin Configurations diagram and Package Information note. This connection provides critical thermal dissipation and electrical stability; leaving EP unconnected or floating may compromise thermal performance and long-term reliability in high-temperature automotive or industrial environments.
MAX16056ATA17+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.665V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX16056ATA17+T FAQ
1.How can I place an order for MAX16056ATA17+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16056ATA17+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 MAX16056ATA17+T reliable?
The price and inventory of MAX16056ATA17+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16056ATA17+T is usually 5 days.
3.What payment methods are accepted for MAX16056ATA17+T?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16056ATA17+T?
MAX16056ATA17+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16056ATA17+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 MAX16056ATA17+T?
For technical support, including MAX16056ATA17+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16056ATA17+T requirements.
6.How does Aetrix verify that MAX16056ATA17+T is sourced from the original manufacturer or authorized distributors?
All MAX16056ATA17+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 MAX16056ATA17+T meets industry standards.
7.What is the process for return or replacement of MAX16056ATA17+T?
All MAX16056ATA17+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16056ATA17+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 MAX16056ATA17+T part is unused and in its original packaging.
Return procedure for MAX16056ATA17+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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