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Analog Devices Inc./Maxim Integrated MAX16058ATA27+T
- Part No.:
- MAX16058ATA27+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16058ATA27+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX16058ATA27+T from Analog Devices is an ultra-low-power, open-drain microprocessor supervisory circuit with factory-trimmed 2.700V reset threshold, capacitor-adjustable reset timeout (14.18ms typical with 2700pF), and integrated watchdog timer supporting normal/extended modes. It monitors single-supply VCC (1.1V–5.5V), asserts active-low RESET on brownout/manual reset/watchdog fault, and operates across -40°C to +125°C for automotive and portable medical devices.
For engineers reviewing the MAX16058ATA27+T datasheet, MAX16058ATA27+T pinout, MAX16058ATA27+T application, or MAX16058ATA27+T equivalent, key selection criteria include its 125nA typical supply current, 2.700V ±2.5% threshold tolerance over temperature, open-drain RESET output compatibility with mixed-voltage logic, and dual-capacitor programmability for independent reset and watchdog timing.
Technical Context
The MAX16058ATA27+T implements a precision bandgap-based voltage monitor with 0.5% hysteresis and guaranteed RESET validity down to VCC = 1.1V. Its internal ramp-comparator architecture samples external SRT and SWT capacitors to generate programmable tRP and tWD periods without requiring external clocks or digital logic.
Watchdog operation includes WDS-controlled 128× timeout extension, WDI pulse detection (150ns minimum width), and automatic clearing on RESET assertion or WDS transition. The device features transient immunity up to 40µs for 100mV VCC glitches and supports watchdog disable via SWT-to-GND connection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.700V ±2.5% over -40°C to +125°C - ensures reliable brownout detection across automotive temperature extremes |
| Supply Current | 125nA typical at 3.3V/25°C - enables multi-year battery life in glucose monitors and portable meters |
| Reset Timeout | 14.18ms typical with 2700pF on SRT - provides sufficient deassertion delay for slow-ramping µPs after power-up |
| Watchdog Period | 6.4ms typical base period (tWDPER), extendable to 819.2ms via WDS - accommodates diverse firmware execution cycles |
| Operating Voltage | 1.1V to 5.5V - supports direct monitoring of Li-ion, coin-cell, and 3.3V/5V system rails |
| Output Type | Open-drain RESET - allows level-shifting to higher-voltage logic domains (up to 5.5V pull-up) |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial embedded applications |
Pinout & Package
MAX16058ATA27+T uses an 8-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) connected to GND. Pin 1 is RESET (open-drain), Pin 2 is GND, Pin 3 is SWT (watchdog timeout input), Pin 4 is MR (manual reset input), Pin 5 is SRT (reset timeout input), Pin 6 is N.C., Pin 7 is WDS (watchdog select input), and Pin 8 is VCC. EP must be soldered to GND for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET (Pin 1) | Open-drain reset output | Drives low during fault conditions; requires external pull-up; sinks ≥50µA at 0.3V for logic-level compatibility |
| GND (Pin 2) | Ground reference | Common return path for all internal circuits and external capacitors (SRT, SWT) |
| SWT (Pin 3) | Watchdog timeout capacitor input | Connects to GND via CSWT (2275pF–0.54µF); sampling determines tWD; grounding disables watchdog |
| MR (Pin 4) | Manual reset input | Active-low asynchronous trigger; no internal pull-up; requires external VCC tie if unused |
| SRT (Pin 5) | Reset timeout capacitor input | Connects to GND via CSRT (39pF–4.7µF); sets tRP per tRP = 5.15×10⁶ × CSRT (seconds) |
| N.C. (Pin 6) | No connection | Not internally bonded; must remain unconnected on PCB |
| WDS (Pin 7) | Watchdog mode select | GND = normal mode (tWD); VCC = extended mode (tWD × 128); transition clears watchdog counter |
| VCC (Pin 8) | Power supply input | Monitored rail input; bypass with 0.1µF ceramic capacitor to GND near pin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 125nA typical supply current enables >10-year battery life in always-on medical sensors |
| Capacitor-programmable tRP/tWD | Independent SRT/SWT capacitor selection eliminates need for external timing ICs or firmware calibration |
| Watchdog disable via SWT-to-GND | Hardware-based watchdog disable simplifies qualification for safety-critical systems requiring deterministic reset behavior |
| Transient immunity | Immune to ≤40µs, 100mV VCC transients - reduces false resets in noisy automotive environments |
| Guaranteed RESET down to 1.1V | Ensures valid reset signaling during deep brownout, preventing µP lockup before full power collapse |
Applications
| Portable Medical Sensors | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Glucose monitors and patient telemetry units operating from coin-cell batteries with infrequent wake-up cycles. IC Role / Device Role / Timing Role: Supervises VCC during sleep/wake transitions; generates precise reset pulse on power-up and watchdog timeout on firmware hang. Use Value: 125nA ICC extends battery life beyond 5 years; open-drain RESET interfaces directly to 1.8V µP I/O while powered from 3.0V rail. |
Use Scenario: Door module ECUs exposed to load-dump and cold-crank transients in 12V automotive systems. IC Role / Device Role / Timing Role: Monitors 5V LDO output; asserts RESET during brownout; provides 14.18ms tRP to ensure µP initialization completes before peripherals enable. Use Value: -40°C to +125°C rating and 40µs transient immunity prevent spurious resets during engine cranking or alternator ripple. |
| Smart Utility Meters | Industrial Handheld Terminals |
|
Use Scenario: Battery-backed AMI meters requiring tamper-resistant power supervision and firmware integrity checks. IC Role / Device Role / Timing Role: Uses WDS to configure extended watchdog (217s with 0.33µF) for long firmware update windows; SRT sets 100ms tRP for EEPROM write recovery. Use Value: Dual-capacitor programmability enables field-upgradable timing without hardware changes or BOM revisions. |
Use Scenario: Ruggedized PDAs used in warehouse logistics with frequent drop-induced MCU resets. IC Role / Device Role / Timing Role: Provides manual reset via front-panel switch (MR input); open-drain RESET drives 3.3V µP with 10kΩ pull-up to match I²C bus voltage. Use Value: MR glitch rejection (200ns) prevents accidental resets from ESD events; push-button interface requires no external debounce components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16056ATA27+T | Push-pull RESET output; identical threshold, timing, and watchdog specs | Requires level-shifting for >VCC logic domains; not suitable where open-drain isolation is needed | Select when driving CMOS inputs directly and no voltage translation is required |
| TPS3808G33DBVR | Fixed 3.3V threshold; 1.6µA ICC; no watchdog; SOT-23-6 package | Lacks capacitor-adjustable timing and watchdog; lower integration for simple reset-only use cases | Select for cost-sensitive, non-watchdog applications where 3.3V threshold suffices and 1.6µA ICC is acceptable |
Compared with MAX16056ATA27+T, the MAX16058ATA27+T's open-drain output enables mixed-voltage system interfacing without level shifters, while the TPS3808G33DBVR offers smaller footprint and lower cost but sacrifices programmability and ultra-low power.
Availability
MAX16058ATA27+T is available at Aetrix Electronics and suitable for portable medical sensors, automotive body control modules, smart utility meters, and industrial handheld terminals requiring stable component supply with guaranteed automotive-grade temperature performance and long-term lifecycle support.
Supply support for MAX16058ATA27+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, headquartered in Wilmington, MA.
The MAX16056–MAX16059 family was designed specifically for ultra-low-power, high-reliability supervisory functions in battery-critical and automotive applications, emphasizing nanoamp current consumption, wide temperature operation, and flexible timing configuration.
FAQ
What is the factory-trimmed reset threshold voltage for MAX16058ATA27+T?
The MAX16058ATA27+T has a factory-trimmed reset threshold of 2.700V, with ±1.5% tolerance at +25°C and ±2.5% over the full -40°C to +125°C operating range. This value is confirmed in Table 1 of the datasheet under suffix "27", and applies specifically to the MAX16058ATA27+T variant-not the broader MAX16058 family.
How do I configure the reset timeout period for MAX16058ATA27+T?
To configure the reset timeout period for MAX16058ATA27+T, connect a capacitor (CSRT) between the SRT pin (Pin 5) and GND. The timeout is calculated as tRP = 5.15 × 10⁶ × CSRT (seconds). For the nominal 14.18ms value, use 2700pF-verified in Table 2. Ceramic X7R capacitors with leakage <10nA are recommended for stability.
Does MAX16058ATA27+T support watchdog timer disable functionality?
Yes, MAX16058ATA27+T supports hardware watchdog disable by connecting the SWT pin (Pin 3) directly to GND. This action forces the watchdog timeout to zero, preventing reset assertion due to watchdog faults. The feature is documented in the Pin Description and Detailed Description sections of the datasheet.
What is the maximum allowable VCC transient duration that will not trigger a reset on MAX16058ATA27+T?
Per the "Maximum VCC Transient Duration vs. Reset Threshold Overdrive" graph, MAX16058ATA27+T tolerates VCC transients up to 40µs in duration when the overdrive is 100mV (i.e., VCC dips 100mV below VTH). This transient immunity is inherent to the internal comparator design and does not require external filtering for typical automotive or industrial noise profiles.
Can MAX16058ATA27+T operate with a 1.2V supply voltage?
Yes, MAX16058ATA27+T operates with VCC as low as 1.1V, fully specified from 1.1V to 5.5V. At 1.2V, it maintains valid RESET output (VOL ≤ 0.3V at 50µA sink), accurate 2.700V threshold monitoring (with appropriate margin), and functional watchdog timing-enabling use in ultra-low-voltage energy-harvesting systems.
MAX16058ATA27+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:
- 2.7V
- 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:
- 8-TDFN (3x3)
MAX16058ATA27+T FAQ
1.How can I place an order for MAX16058ATA27+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16058ATA27+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 MAX16058ATA27+T reliable?
The price and inventory of MAX16058ATA27+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16058ATA27+T is usually 5 days.
3.What payment methods are accepted for MAX16058ATA27+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16058ATA27+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16058ATA27+T?
MAX16058ATA27+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16058ATA27+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 MAX16058ATA27+T?
For technical support, including MAX16058ATA27+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16058ATA27+T requirements.
6.How does Aetrix verify that MAX16058ATA27+T is sourced from the original manufacturer or authorized distributors?
All MAX16058ATA27+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 MAX16058ATA27+T meets industry standards.
7.What is the process for return or replacement of MAX16058ATA27+T?
All MAX16058ATA27+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16058ATA27+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 MAX16058ATA27+T part is unused and in its original packaging.
Return procedure for MAX16058ATA27+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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