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Analog Devices Inc./Maxim Integrated MAX16058ATA31+T
- Part No.:
- MAX16058ATA31+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16058ATA31+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,116
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Product details
Overview
MAX16058ATA31+T from Analog Devices is an ultra-low-power, open-drain microprocessor supervisory circuit with factory-trimmed 3.075V reset threshold (±2.5% over -40°C to +125°C), capacitor-adjustable reset timeout (10.5–17.0ms typical), and integrated watchdog timer supporting normal/extended modes. It monitors single VCC supply (1.1V–5.5V), asserts active-low RESET on brownout, manual reset, or watchdog timeout, and is used in battery-powered medical and portable electronics requiring guaranteed reset validity down to 1.1V.
For engineers reviewing the MAX16058ATA31+T datasheet, MAX16058ATA31+T pinout, MAX16058ATA31+T application, or MAX16058ATA31+T equivalent, key selection criteria include its 125nA typical supply current at 3.3V/25°C, 8-pin TDFN-EP package with exposed pad, open-drain RESET output compatible with 0–5.5V logic levels, and watchdog timeout programmability via SWT/WDS pins - all validated for automotive-grade (-40°C to +125°C) operation.
Technical Context
The MAX16058ATA31+T implements a precision voltage monitor with hysteresis (0.5%) and a dual-mode watchdog timer: normal mode uses SWT capacitor timing with 3.5–9.5ms clock period, while WDS input enables 128× extended timeout. Its internal ramp-based timing architecture relies on calibrated SRT/SWT ramp currents (210–240nA at 25°C) and thresholds (1.173–1.297V) to achieve capacitor-programmable delays.
Reset assertion is guaranteed for VCC ≥ 1.1V; RESET remains valid during power-up/down transients, with immunity to ≤40µs/100mV VCC glitches. The device features no internal MR pullup, requires external capacitor selection per Table 2, and samples SWT capacitance after RESET deassertion - disabling watchdog if CSWT < 470pF or > 0.47µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 125nA typical at VCC = 1.8V, TA = -40°C to +125°C - enables multi-year battery life in always-on medical sensors. |
| Reset Threshold | 3.075V (suffix "31"), ±2.5% over full temperature range - ensures reliable brownout detection across automotive environments. |
| Reset Timeout | 10.5–17.0ms typical with CSRT = 2700pF - matches µP initialization sequences without overdesigning delay margins. |
| Watchdog Clock Period | 3.5–9.5ms over temperature - defines base timing resolution for software watchdog servicing intervals. |
| Operating Voltage Range | 1.1V to 5.5V - supports direct monitoring of Li-ion, coin-cell, and 3.3V/5V system rails without level-shifting. |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial embedded applications. |
| Output Type | Open-drain RESET - allows flexible logic-level interfacing (e.g., pullup to 1.8V/3.3V/5V) and wired-OR bus configurations. |
Pinout & Package
MAX16058ATA31+T is housed in an 8-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) that must be connected to GND for thermal and electrical performance. Pin 1 is RESET; pin 2 is GND; pin 3 is SWT; pin 4 is MR; pin 5 is SRT; pin 6 is N.C.; pin 7 is WDS; pin 8 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain reset output | Asserts low on VCC drop below 3.075V, MR low, or watchdog timeout; requires external pullup for logic-high state. |
| 2 - GND | Ground reference | Common return path for all internal circuits and external capacitors (SWT, SRT); connects to EP for thermal dissipation. |
| 3 - SWT | Watchdog timeout capacitor input | Connects to GND via capacitor (2275pF–0.54µF) to set base watchdog period; grounded to disable watchdog. |
| 4 - MR | Manual reset input | Active-low asynchronous reset trigger; no internal pullup - must be tied to VCC if unused or use external pullup. |
| 5 - SRT | Reset timeout capacitor input | Connects to GND via capacitor (39pF–4.7µF) to program reset hold time; determines tRP = 5.15 × 10⁶ × CSRT. |
| 6 - N.C. | No connection | Not internally bonded; left floating or unconnected on PCB - no electrical function or routing required. |
| 7 - WDS | Watchdog select input | Ground for normal mode (tWD), VCC for extended mode (tWD × 128); transition clears watchdog counter. |
| 8 - VCC | Power supply input | Monitored supply rail (1.1–5.5V); bypass with 0.1µF ceramic capacitor to GND for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 125nA typical at 1.8V/25°C - reduces quiescent load on coin-cell batteries by >90% vs. standard supervisors. |
| Capacitor-adjustable tRP | Programmable 10.5–17.0ms reset timeout using SRT pin - eliminates fixed-delay IC variants and simplifies BOM. |
| Dual-mode watchdog | WDS-selectable 1× or 128× timeout scaling - supports both fast-fault detection and long-interval firmware supervision. |
| VCC transient immunity | Immune to ≤40µs/100mV supply glitches - prevents spurious resets in noisy automotive or switching-regulator environments. |
| Guaranteed RESET down to 1.1V | Valid reset assertion even as VCC collapses - ensures deterministic µP reset before logic corruption occurs. |
Applications
| Glucose Monitors | Patient Monitors |
|---|---|
Use Scenario: Portable handheld glucose meters operating from CR2032 coin cells with intermittent usage over multi-year shelf life. IC Role / Device Role / Timing Role: Supervisory circuit asserting RESET during power-up, brownout, or firmware hang to prevent erroneous glucose readings. Use Value: 125nA supply current extends battery life beyond 5 years; open-drain RESET interfaces directly to 1.8V µP I/O without level shifters. |
Use Scenario: Battery-backed bedside patient monitors requiring fail-safe reboot on power interruption or software lockup. IC Role / Device Role / Timing Role: Dual-role supervisor providing both power-on reset and watchdog-triggered recovery for ARM Cortex-M4 host MCU. Use Value: Factory-trimmed 3.075V threshold matches 3.3V rail tolerance; adjustable tRP (via SRT) aligns precisely with µP boot ROM timing. |
| Smart Meters | HVAC Controllers |
Use Scenario: ANSI C12.22-compliant electricity meters with optical port and RF mesh networking, deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Automotive-grade (-40°C to +125°C) supervisor ensuring reliable reset during wide-temperature power cycling. Use Value: Guaranteed operation at 125°C ambient enables placement near power converters; 0.5% hysteresis prevents chatter near threshold. |
Use Scenario: Commercial HVAC zone controllers powered from 24VAC-derived 3.3V rails subject to transformer-induced transients. IC Role / Device Role / Timing Role: Transient-immune supervisor preventing false resets during relay switching or motor startup events. Use Value: Immunity to 40µs/100mV VCC glitches eliminates need for oversized bulk capacitance; WDS pin enables field-configurable watchdog intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16056ATA31+T | Push-pull RESET output; same 3.075V threshold, 125nA ICC, and watchdog functionality. | Requires no external pullup; better suited for systems where RESET must drive CMOS inputs directly without external components. | Select when push-pull drive simplifies layout and eliminates pullup resistor; verify µP input leakage compatibility with VOL spec. |
| TPS3808G33DBVR | Fixed 3.3V threshold (±0.5%), 1.6µA ICC, no watchdog, SOT-23-6 package. | Lacks capacitor-adjustable timing and watchdog - suitable only for basic reset-only functions with tighter threshold tolerance. | Choose for cost-sensitive, non-watchdog applications where 3.3V rail margin allows fixed threshold and higher ICC is acceptable. |
Compared with MAX16056ATA31+T, MAX16058ATA31+T provides open-drain flexibility for mixed-voltage systems but requires an external pullup; versus TPS3808G33DBVR, it delivers 13× lower supply current and programmable timing at the cost of higher pin count and design complexity.
Availability
MAX16058ATA31+T is available at Aetrix Electronics and suitable for glucose monitors, patient monitors, smart meters, and HVAC controllers requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MAX16058ATA31+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, automotive-grade supervisory functions in battery-critical and safety-relevant embedded systems - emphasizing nanoamp quiescent current, wide temperature operation, and field-programmable timing.
FAQ
What is the factory-trimmed reset threshold voltage for MAX16058ATA31+T?
The MAX16058ATA31+T has a factory-trimmed reset threshold of 3.075V, with ±1.5% tolerance at +25°C and ±2.5% over the full -40°C to +125°C operating range. This value is confirmed by suffix "31" in the part number and Table 1 of the datasheet, and applies specifically to the MAX16058ATA31+T variant - not the broader MAX16058 family.
Does MAX16058ATA31+T support watchdog timer functionality?
Yes, MAX16058ATA31+T includes a fully functional watchdog timer with capacitor-adjustable timeout via the SWT pin and dual-mode operation controlled by the WDS pin. It supports both normal mode (base timeout) and extended mode (128× timeout), as documented in the Pin Description and Detailed Description sections of the datasheet.
What package type and dimensions does MAX16058ATA31+T use?
MAX16058ATA31+T uses an 8-pin 3mm × 3mm TDFN-EP package with exposed pad (EP), outlined in Package Information section and land pattern 90-0059. The exposed pad must be soldered to a GND plane for thermal performance and electrical stability - a requirement explicitly stated in the Pin Configurations diagram.
How is the reset timeout period configured on MAX16058ATA31+T?
The reset timeout period on MAX16058ATA31+T is configured by connecting an external capacitor (CSRT) between the SRT pin and GND. The relationship is tRP = 5.15 × 10⁶ × CSRT (seconds), yielding 10.5–17.0ms typical with 2700pF, as verified in Electrical Characteristics table and Table 2.
Is MAX16058ATA31+T specified for automotive temperature range?
Yes, MAX16058ATA31+T is fully specified over the -40°C to +125°C automotive temperature range, as stated in the General Description, Absolute Maximum Ratings, and Electrical Characteristics sections. This qualification applies to all operating parameters including supply current, reset threshold accuracy, and watchdog timing.
MAX16058ATA31+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:
- 3.075V
- 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)
MAX16058ATA31+T FAQ
1.How can I place an order for MAX16058ATA31+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16058ATA31+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 MAX16058ATA31+T reliable?
The price and inventory of MAX16058ATA31+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16058ATA31+T is usually 5 days.
3.What payment methods are accepted for MAX16058ATA31+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16058ATA31+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16058ATA31+T?
MAX16058ATA31+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16058ATA31+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 MAX16058ATA31+T?
For technical support, including MAX16058ATA31+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16058ATA31+T requirements.
6.How does Aetrix verify that MAX16058ATA31+T is sourced from the original manufacturer or authorized distributors?
All MAX16058ATA31+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 MAX16058ATA31+T meets industry standards.
7.What is the process for return or replacement of MAX16058ATA31+T?
All MAX16058ATA31+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16058ATA31+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 MAX16058ATA31+T part is unused and in its original packaging.
Return procedure for MAX16058ATA31+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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