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Analog Devices Inc./Maxim Integrated MAX16058ATA46+
- Part No.:
- MAX16058ATA46+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16058ATA46+.pdf
- Description:
- IC SUPERVISOR OD 4.6V 8-TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,160
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Product details
Overview
MAX16058ATA46+ from Analog Devices is an ultra-low-power microprocessor supervisory circuit with factory-trimmed 4.625V reset threshold, capacitor-adjustable reset timeout (14.18ms typical), and integrated watchdog timer supporting normal/extended modes. It features open-drain RESET output, operates from 1.1V to 5.5V, draws only 125nA typical supply current, and is qualified for automotive applications (-40°C to +125°C). It monitors VCC in battery-powered medical devices such as glucose monitors.
For engineers reviewing the MAX16058ATA46+ datasheet, MAX16058ATA46+ pinout, MAX16058ATA46+ application, or MAX16058ATA46+ equivalent, key selection criteria include its 4.625V reset threshold tolerance (±1.5% at +25°C), adjustable watchdog timeout via SWT capacitor, WDS input for 128× timeout extension, manual-reset input (MR), and guaranteed RESET validity down to VCC = 1.1V.
Technical Context
The MAX16058ATA46+ implements a precision voltage monitor with hysteresis (0.5%) and a dual-ramp capacitor-based timing architecture: SRT sets reset timeout via linear ramp current (240nA typ) and threshold (1.235V), while SWT/WDS configure watchdog timeout using identical ramp parameters and a programmable clock period (6.4ms typ). Its open-drain RESET output supports level-shifting across logic domains.
It integrates transient immunity against VCC glitches up to 40µs at 100mV overdrive and guarantees functional reset assertion even during brownout conditions where VCC falls below 1.1V. The device uses BiCMOS process technology and requires external low-leakage (<10nA) ceramic capacitors on SRT and SWT pins for timing accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.625V (factory-trimmed, ±1.5% at +25°C); ensures reliable power-on reset for 4.5–5.0V systems |
| Supply Current | 125nA typical at VCC = 3.3V, -40°C to +125°C; enables multi-year battery life in portable medical devices |
| Reset Timeout | 14.18ms typical with 2700pF SRT capacitor; configurable from ~10ms to >2s via external capacitor |
| Watchdog Timeout | 6.4ms typical base period; extendable to 217s with 0.33µF SWT cap and WDS = VCC |
| Operating Range | -40°C to +125°C; fully specified for automotive and industrial embedded environments |
| RESET Output Type | Open-drain; allows flexible pull-up to any voltage ≤5.5V for mixed-voltage system interfacing |
| VCC Range | 1.1V to 5.5V; guarantees valid RESET assertion even during deep brownout conditions |
Pinout & Package
MAX16058ATA46+ is housed in an 8-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) intended for grounding. Pin 1 is RESET, Pin 2 is GND, Pin 3 is SWT, Pin 4 is MR, Pin 5 is SRT, Pin 6 is WDS, Pin 7 is WDI, and Pin 8 is VCC. Pin 5 (N.C.) is not internally connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET (Pin 1) | Open-drain reset output | Asserts active-low reset pulse for tRP after VCC drop, MR activation, or watchdog timeout; requires external pull-up |
| GND (Pin 2) | Ground reference | Primary return path for all internal circuits and external timing capacitors (SRT, SWT) |
| SWT (Pin 3) | Watchdog timeout capacitor input | Connects to GND via capacitor to set base watchdog period; grounded to disable watchdog |
| MR (Pin 4) | Manual reset input | Active-low asynchronous reset trigger; no internal pull-up; must be tied to VCC if unused |
| SRT (Pin 5) | Reset timeout capacitor input | Connects to GND via capacitor to set reset deassertion delay; determines tRP = 5.15×10⁶ × CSRT |
| WDS (Pin 6) | Watchdog select input | Configures watchdog mode: GND = normal (tWD), VCC = extended (tWD × 128); clears timer on transition |
| WDI (Pin 7) | Watchdog input | Falling-edge-triggered; must be toggled within tWD to prevent reset; minimum pulse width = 150ns |
| VCC (Pin 8) | 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 125nA supply current | Enables >10-year battery life in always-on portable medical sensors without compromising supervision reliability |
| Capacitor-adjustable reset timeout | Eliminates fixed-timing ICs; supports precise system boot sequencing across diverse µP families via SRT capacitor selection |
| Watchdog timer with 128× extension | Allows single hardware design to support both fast-fault detection (ms range) and long software cycles (100+ seconds) via WDS pin |
| Factory-trimmed 4.625V reset threshold | Matches standard 4.5V/5V rail monitoring requirements without external resistor dividers or calibration |
| Guaranteed RESET validity down to VCC = 1.1V | Ensures deterministic reset behavior during deep brownout, critical for fail-safe operation in automotive and patient-monitoring systems |
Applications
| Glucose Monitoring Systems | Patient Vital Sign Monitors |
|---|---|
Use Scenario: Continuous glucose monitoring (CGM) patch worn for 7–14 days on battery power, requiring reliable power-on reset and fault recovery without user intervention. IC Role / Device Role / Timing Role: Supervises main 3.3V system rail; asserts RESET on brownout or software hang; provides 14.18ms reset hold time and configurable watchdog timeout matching firmware cycle time. Use Value: Prevents corrupted sensor readings or missed alarms by ensuring µP executes clean boot sequence after power interruption or crash. | Use Scenario: Portable ECG or SpO₂ monitor used in ambulances or home care, operating from coin-cell or rechargeable Li-ion with strict power budget. IC Role / Device Role / Timing Role: Monitors 4.5V analog front-end supply; triggers reset if VCC drops below 4.625V; uses open-drain RESET to interface with 1.8V µP I/O domain. Use Value: Maintains clinical-grade data integrity by guaranteeing supervised startup and runtime watchdog coverage under variable load and temperature. |
| Metering (Smart Utility Meters) | HVAC Control Panels |
Use Scenario: Battery-backed gas/water meter deployed outdoors for 10+ years, subject to wide temperature swings and intermittent RF transmission loads. IC Role / Device Role / Timing Role: Supervises 3.6V lithium-thionyl chloride battery rail; uses SWT capacitor to set 60s watchdog timeout aligned with RF wake-up interval; WDS pin enables field-upgradable timeout via firmware control. Use Value: Eliminates need for external timing components and reduces BOM count while meeting IEC 62056 long-term reliability requirements. | Use Scenario: Wall-mounted HVAC controller powered by 24VAC-derived 5V rail, exposed to EMI from relays and motors. IC Role / Device Role / Timing Role: Provides transient-immune reset (40µs glitch immunity) for 5V microcontroller; SRT capacitor sets 100ms reset timeout to accommodate slow AC rectifier ramp-up. Use Value: Prevents spurious resets during relay switching events, improving field reliability and reducing service calls. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16056ATA46+ | Push-pull RESET output; same 4.625V threshold, 125nA ICC, and watchdog capability | Requires direct connection to µP reset pin without external pull-up; unsuitable for level-shifting | Select when system uses single-supply µP with compatible reset input voltage and no need for open-drain flexibility |
| TLV809E46DBZR | No watchdog timer; fixed 4.63V threshold; 0.5µA supply current; SOT-23-3 package | Lacks capacitor-adjustable timing and manual reset; limited to basic reset-only functions | Select only for cost-sensitive, space-constrained designs where watchdog and timing adjustability are unnecessary |
Compared with MAX16056ATA46+, the MAX16058ATA46+ offers open-drain output for mixed-voltage interfacing but shares identical timing accuracy and ultra-low power. Compared with TLV809E46DBZR, it adds watchdog supervision and programmable timeouts at higher component count but enables robust system-level fault recovery.
Availability
MAX16058ATA46+ is available at Aetrix Electronics and suitable for glucose monitors, patient vital sign monitors, smart utility meters, and HVAC control panels requiring stable component supply across automotive-grade temperature ranges and long-life battery operation.
Supply support for MAX16058ATA46+ 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 applications such as portable medical devices and automotive subsystems, emphasizing nanoampere quiescent current and capacitor-programmable timing.
FAQ
What is the factory-trimmed reset threshold voltage for MAX16058ATA46+?
The MAX16058ATA46+ has a factory-trimmed reset threshold of 4.625V (typical), with tolerance of ±1.5% 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 "46", and applies directly to the MAX16058ATA46+ part number. The threshold is referenced to the VCC supply being monitored.
Does MAX16058ATA46+ include a watchdog timer, and how is it configured?
Yes, MAX16058ATA46+ includes a watchdog timer. It is configured using three pins: SWT (capacitor input to set base timeout), WDS (mode select: GND = normal, VCC = extended ×128), and WDI (falling-edge-triggered watchdog feed input). The base timeout is 6.4ms typical, scalable to 217s with 0.33µF SWT capacitor and WDS = VCC. This configuration is exclusive to MAX16056/MAX16058 variants.
What package type and footprint does MAX16058ATA46+ use?
MAX16058ATA46+ uses an 8-pin 3mm × 3mm TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) package. The exposed pad (EP) must be connected to GND for thermal and electrical performance. Land pattern information is available at www.analog.com/packages under outline number T833-2 and land pattern number 90-0059.
How is the reset timeout period adjusted on MAX16058ATA46+?
The reset timeout period on MAX16058ATA46+ is adjusted by connecting an external capacitor between the SRT pin (Pin 5) and GND. The relationship is tRP = 5.15 × 10⁶ × CSRT, where tRP is in seconds and CSRT in farads. For example, a 2700pF capacitor yields 14.18ms typical timeout. Ceramic X7R capacitors with leakage <10nA are recommended.
What is the supply current specification for MAX16058ATA46+ across temperature and voltage?
MAX16058ATA46+ draws 125nA typical supply current at VCC = 3.3V and TA = -40°C to +125°C. At VCC = 5.0V and same temperature range, it draws 142nA typical. The maximum supply current is 430nA at VCC = 5.0V and TA = -40°C to +125°C. These values are measured with reset deasserted and no load, per Electrical Characteristics table.
MAX16058ATA46+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.625V
- 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)
MAX16058ATA46+ FAQ
1.How can I place an order for MAX16058ATA46+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16058ATA46+ 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 MAX16058ATA46+ reliable?
The price and inventory of MAX16058ATA46+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16058ATA46+ is usually 5 days.
3.What payment methods are accepted for MAX16058ATA46+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16058ATA46+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16058ATA46+?
MAX16058ATA46+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16058ATA46+ 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 MAX16058ATA46+?
For technical support, including MAX16058ATA46+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16058ATA46+ requirements.
6.How does Aetrix verify that MAX16058ATA46+ is sourced from the original manufacturer or authorized distributors?
All MAX16058ATA46+ 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 MAX16058ATA46+ meets industry standards.
7.What is the process for return or replacement of MAX16058ATA46+?
All MAX16058ATA46+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16058ATA46+, 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 MAX16058ATA46+ part is unused and in its original packaging.
Return procedure for MAX16058ATA46+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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