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Analog Devices Inc./Maxim Integrated MAX16058ATA27+
- Part No.:
- MAX16058ATA27+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16058ATA27+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,960
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Product details
Overview
MAX16058ATA27+ from Analog Devices is an ultra-low-power microprocessor supervisory circuit with open-drain RESET output, factory-trimmed 2.700V reset threshold (±2.5% over -40°C to +125°C), capacitor-adjustable reset timeout (10.5–17.0ms with 2700pF), and integrated watchdog timer with WDS-selectable 128× extension. It monitors single-supply systems in battery-powered medical and portable electronics where supply current ≤125nA (typ) at 3.3V and operation down to 1.1V are critical.
For engineers reviewing the MAX16058ATA27+ datasheet, MAX16058ATA27+ pinout, MAX16058ATA27+ application, or MAX16058ATA27+ equivalent, key selection criteria include its 8-pin TDFN package with exposed pad, watchdog disable via SWT-to-GND, manual-reset input with 250ns delay, guaranteed RESET validity down to VCC = 1.1V, and compatibility with low-leakage ceramic timing capacitors (SRT/SWT).
Technical Context
The MAX16058ATA27+ implements a precision voltage monitor with hysteresis (0.5%) and dual ramp-based timing circuits: SRT pin controls reset timeout using a 240nA (typ) ramp current charging to 1.235V threshold, while SWT pin governs watchdog timeout via identical ramp architecture and a separate 6.4ms clock period. Its open-drain RESET output supports level-shifting across 0–5.5V logic domains.
Watchdog operation includes normal mode (WDS = GND) and extended mode (WDS = VCC), with automatic sampling of SWT capacitance after RESET deassertion. The device features glitch rejection on MR (200ns), 150ns minimum WDI pulse width, and transient immunity enabling reliable operation under 40µs/100mV VCC glitches.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 125nA typical at 3.3V, -40°C to +125°C - enables multi-year battery life in always-on medical sensors |
| Reset Threshold | 2.700V ±2.5% over full temperature range - ensures stable brownout detection across automotive-grade thermal profiles |
| Reset Timeout | 10.5–17.0ms with 2700pF on SRT - matches μP power-up stabilization requirements without fixed RC constraints |
| Watchdog Clock Period | 6.4ms typical, ±3.5ms min/max - defines base timing quantum for software service interval calibration |
| Operating Voltage Range | 1.1V to 5.5V - supports direct monitoring of Li-ion, coin-cell, and 3.3V/5V system rails |
| RESET Validity | Guaranteed down to VCC = 1.1V - prevents undefined logic states during deep brownout recovery |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial embedded environments |
Pinout & Package
MAX16058ATA27+ uses an 8-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) intended for grounding. 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 VCC, and Pin 8 is WDS (watchdog select input). WDI is not present on this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Open-drain reset output | Active-low signal asserted during VCC undervoltage, MR low, or watchdog timeout; requires external pullup for logic-level translation |
| 2: GND | Ground reference | Primary return path for internal analog comparators and ramp generators; must be low-impedance for timing accuracy |
| 3: SWT | Watchdog timeout capacitor input | Connects to GND via timing capacitor; sampled after RESET deassertion to set watchdog period; grounded to disable function |
| 4: MR | Manual-reset input | Asynchronous active-low trigger; no internal pullup; asserts RESET for full tRP after release; 250ns delay ensures noise immunity |
| 5: SRT | Reset timeout capacitor input | Connects to GND via timing capacitor; sets tRP = 5.15 × 10⁶ × CSRT; 39pF–4.7µF range supported for 0.2ms–24s coverage |
| 6: N.C. | No connection | Not internally bonded; must remain unconnected per datasheet to avoid parasitic coupling or ESD path issues |
| 7: VCC | Supply voltage input | Monitored rail input and power source; bypass with 0.1µF ceramic capacitor to GND for transient immunity |
| 8: WDS | Watchdog select input | Configures watchdog mode: GND = normal (tWD), VCC = extended (tWD × 128); transition clears timer |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 125nA typical at 3.3V enables >10-year coin-cell operation in glucose monitors and wearables |
| Capacitor-adjustable tRP & tWD | Eliminates trimming resistors; supports field-programmable timeout values via standard ceramic capacitors |
| Watchdog disable via SWT-to-GND | Hardware-enforced disable avoids firmware errors; eliminates need for boot-time watchdog initialization |
| Power-supply transient immunity | Rejects 40µs/100mV VCC glitches - prevents spurious resets in noisy automotive or industrial power rails |
| Guaranteed RESET at VCC ≥ 1.1V | Ensures deterministic reset assertion during deep brownout, avoiding metastability in downstream logic |
| Open-drain RESET output | Enables level-shifting to 0–5.5V logic domains and wired-OR reset bus configurations |
Applications
| Glucose Monitors | Patient Monitors |
|---|---|
Use Scenario: Continuous blood glucose sensing with Bluetooth LE transmission requiring multi-year battery life and fail-safe power sequencing. IC Role / Device Role / Timing Role: Supervises main 3.3V rail and triggers hardware reset if voltage drops below 2.700V during sensor activation or RF burst. Use Value: 125nA supply current extends CR2032 battery life beyond 5 years; adjustable tRP ensures proper ADC and BLE controller initialization timing. |
Use Scenario: Portable ECG and SpO₂ units operating from rechargeable Li-ion batteries in clinical and home settings. IC Role / Device Role / Timing Role: Monitors 5V system rail and provides watchdog supervision of ARM Cortex-M4 firmware execution. Use Value: WDS-selectable 128× watchdog extension allows safe 217s timeout for complex diagnostic routines without false triggers. |
| Metering (Smart Meters) | HVAC Controllers |
Use Scenario: Battery-backed AMI smart meters deployed in extreme ambient temperatures (-40°C to +125°C). IC Role / Device Role / Timing Role: Resets meter SoC during cold-start brownout and detects firmware hangs via WDI polling. Use Value: ±2.5% VTH tolerance over full temperature range ensures consistent reset behavior across seasonal extremes. |
Use Scenario: Embedded HVAC control boards powered by 24VAC-derived 3.3V rails subject to transformer-induced transients. IC Role / Device Role / Timing Role: Provides glitch-immune reset assertion during AC line disturbances and validates power integrity before MCU boot. Use Value: 40µs/100mV transient immunity prevents nuisance resets during relay switching and compressor startup events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16056ATA27+ | Push-pull RESET output; same VTH, tRP, and watchdog architecture; no WDI pin | Requires no external pullup; unsuitable for level-shifting or wired-OR buses | Select when driving CMOS inputs directly and board space permits simpler termination |
| TLV809E27DBZR | Fixed 2.7V reset, no watchdog, 1.8–6V supply, 0.5µA ICC, SOT-23-3 package | Lacks capacitor-adjustable timing and system supervision; only basic reset generation | Select for cost-sensitive, non-watchdog applications where ultra-low ICC is secondary |
Compared with MAX16056ATA27+, the MAX16058ATA27+ offers open-drain flexibility for mixed-voltage systems but requires a pullup resistor; versus TLV809E27DBZR, it delivers nanoPower operation, field-programmable timeouts, and robust watchdog supervision essential for safety-critical portable medical devices.
Availability
MAX16058ATA27+ is available at Aetrix Electronics and suitable for glucose monitors, patient monitors, and smart metering applications requiring stable component supply, long-term lifecycle support, and automotive-grade temperature performance.
Supply support for MAX16058ATA27+ 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 supervisory functions in battery-critical portable and medical electronics, emphasizing nanoscale current consumption, capacitor-programmable timing, and automotive-grade reliability.
FAQ
What is the factory-trimmed reset threshold voltage for MAX16058ATA27+?
The MAX16058ATA27+ 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+ variant with open-drain output and watchdog functionality.
Does MAX16058ATA27+ include a watchdog timer, and how is it configured?
Yes, MAX16058ATA27+ includes a capacitor-adjustable watchdog timer. It is configured using the SWT pin (capacitor to GND) and WDS pin (GND for normal mode, VCC for 128× extended mode). The watchdog is disabled by connecting SWT to GND. Unlike MAX16056/MAX16057 variants, MAX16058ATA27+ retains full watchdog capability in its 8-pin TDFN package.
What package type and pin count does MAX16058ATA27+ use?
MAX16058ATA27+ uses an 8-pin 3mm × 3mm TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) package. Pin 6 is N.C., and the exposed pad (EP) must be connected to GND for thermal and electrical performance. This matches the MAX16056/MAX16058 family's 8-pin configuration, distinct from the 6-pin variants used for MAX16057/MAX16059.
How is the reset timeout period set for MAX16058ATA27+?
The reset timeout period for MAX16058ATA27+ is set using an external capacitor on the SRT pin, with tRP = 5.15 × 10⁶ × CSRT (tRP in seconds, CSRT in farads). With a 2700pF capacitor, tRP is 10.5–17.0ms. The recommended capacitor range is 39pF to 4.7µF, supporting timeout periods from ~0.2ms to ~24s, as verified in Table 2 of the official datasheet.
What is the maximum supply voltage and operating temperature range for MAX16058ATA27+?
MAX16058ATA27+ operates from 1.1V to 5.5V supply voltage and is fully specified over the -40°C to +125°C automotive temperature range. Absolute maximum VCC is +6V, and junction temperature is rated to +150°C. These ratings are validated per JEDEC standards and apply to all MAX16056–MAX16059 variants including MAX16058ATA27+.
MAX16058ATA27+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tube
- 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+ FAQ
1.How can I place an order for MAX16058ATA27+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16058ATA27+ 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+ reliable?
The price and inventory of MAX16058ATA27+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16058ATA27+ is usually 5 days.
3.What payment methods are accepted for MAX16058ATA27+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16058ATA27+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16058ATA27+?
MAX16058ATA27+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16058ATA27+ 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+?
For technical support, including MAX16058ATA27+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16058ATA27+ requirements.
6.How does Aetrix verify that MAX16058ATA27+ is sourced from the original manufacturer or authorized distributors?
All MAX16058ATA27+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX16058ATA27+?
All MAX16058ATA27+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16058ATA27+, 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+ part is unused and in its original packaging.
Return procedure for MAX16058ATA27+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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