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Analog Devices Inc./Maxim Integrated MAX16058ATA22+
- Part No.:
- MAX16058ATA22+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16058ATA22+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:195
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Product details
Overview
MAX16058ATA22+ from Analog Devices is an ultra-low-power microprocessor supervisory circuit with open-drain RESET output, factory-trimmed 2.235V reset threshold (±1.5% at +25°C), 125nA typical supply current at 3.3V, and integrated watchdog timer supporting both normal and 128× extended timeout modes. It monitors single-supply systems in battery-powered medical devices such as glucose monitors and portable patient monitors.
For engineers reviewing the MAX16058ATA22+ datasheet, MAX16058ATA22+ pinout, MAX16058ATA22+ application, or MAX16058ATA22+ equivalent, key selection considerations include capacitor-adjustable reset timeout (tRP = 5.15 × 10⁶ × CSRT), watchdog timeout accuracy over -40°C to +125°C, open-drain logic compatibility with external pullups, and guaranteed RESET validity down to VCC ≥ 1.1V.
Technical Context
The MAX16058ATA22+ implements a precision voltage monitor with hysteresis (0.5%) and dual-ramp timing architecture: SRT pin controls reset timeout via external capacitor charging current (210–240nA), while SWT/WDS pins configure watchdog timeout using identical ramp circuitry plus 128× multiplication logic. Its BiCMOS process enables stable operation across automotive temperature range (-40°C to +125°C).
It features active-low manual reset (MR) with 250ns delay, watchdog input (WDI) detecting 150ns pulses, and transient immunity validated up to 40µs for 100mV VCC glitches. The exposed-pad 8-pin TDFN package supports thermal resistance of θJA = 41°C/W and requires GND connection to EP for optimal performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.235V (factory-trimmed, ±1.5% at +25°C; ±2.5% over full temp range) |
| Supply Current | 125nA typ at 3.3V/+25°C; ≤415nA max at 3.3V/-40°C to +125°C |
| Operating Voltage | 1.1V to 5.5V - ensures valid RESET assertion even during deep brownout |
| Reset Timeout | Capacitor-adjustable: tRP = 5.15 × 10⁶ × CSRT (e.g., 2700pF → 14.18ms) |
| Watchdog Timeout | Normal mode: tWD = Floor[CSWT × 5.15×10⁶/6.4ms] × 6.4ms + 3.2ms; extended mode multiplies by 128 |
| Output Type | Open-drain RESET - enables level-shifting and wired-OR configurations |
| Temperature Range | -40°C to +125°C - fully specified for automotive and industrial applications |
Pinout & Package
Package: 8-pin 3mm × 3mm TDFN-EP with exposed pad (EP); EP must be connected to GND per datasheet recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain reset output | Asserts low on VCC drop below 2.235V, MR low, or watchdog timeout; requires external pullup |
| 2 - GND | Ground reference | Common return path for all internal circuits and EP connection point |
| 3 - SWT | Watchdog timeout capacitor input | Connects to GND via CSWT to set basic watchdog period; grounding disables watchdog |
| 4 - MR | Manual reset input | Active-low asynchronous reset trigger; no internal pullup - must tie to VCC if unused |
| 5 - SRT | Reset timeout capacitor input | Connects to GND via CSRT to set reset deassertion delay after fault clearance |
| 6 - WDI | Watchdog input | Falling edge resets watchdog timer; pulse width ≥150ns required for reliable detection |
| 7 - WDS | Watchdog select input | GND = normal mode; VCC = 128× extended timeout; transition clears watchdog counter |
| 8 - VCC | Power supply input | Monitored supply rail; bypass with 0.1µF ceramic capacitor to GND for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 125nA typical supply current enables >10-year battery life in coin-cell-powered devices |
| Capacitor-adjustable timing | Independent SRT and SWT pins allow precise tuning of reset and watchdog delays without firmware changes |
| Watchdog disable option | Grounding SWT permanently disables watchdog function - eliminates risk of spurious timeouts in static systems |
| Transient immunity | Validated immunity to 40µs/100mV VCC transients prevents false resets during noisy power-up sequences |
| Guaranteed RESET validity | RESET remains functional down to VCC = 1.1V - critical for brownout recovery in low-voltage microcontrollers |
Applications
| Glucose Monitors | Patient Monitoring Systems |
|---|---|
Use Scenario: Portable handheld device measuring blood glucose levels with intermittent sensor activation and sleep-mode cycles. IC Role / Device Role / Timing Role: Supervisory IC asserting RESET during battery voltage sag and enabling watchdog-triggered wake-up from deep sleep. Use Value: Prevents corrupted ADC readings during brownout; extends battery life via programmable watchdog-driven power cycling. | Use Scenario: Wearable vital-signs monitor logging ECG, SpO₂, and temperature continuously for 72+ hours on single charge. IC Role / Device Role / Timing Role: Voltage supervisor ensuring MCU reset integrity during Li-ion battery discharge curve crossing 2.2V threshold. Use Value: Eliminates firmware lockup due to undervoltage; open-drain RESET allows shared reset bus with other peripherals. |
| Smart Meters | HVAC Controllers |
Use Scenario: Battery-backed utility meter operating in unattended outdoor environments with wide temperature swings. IC Role / Device Role / Timing Role: Automotive-grade supervisory circuit monitoring main supply and asserting reset on cold-temperature-induced voltage droop. Use Value: Ensures reliable startup after winter power outages; -40°C to +125°C rating avoids derating in enclosed enclosures. | Use Scenario: Embedded HVAC controller managing compressor sequencing, fan speed, and thermostat communication. IC Role / Device Role / Timing Role: System-level watchdog enforcing software health checks during long idle periods between sensor polling intervals. Use Value: Detects firmware hangs caused by electromagnetic interference in motor-drive proximity; 128× extended mode supports multi-minute safety timeouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16056ATA22+ | Push-pull RESET output; same reset threshold, watchdog, and timing architecture | Requires no external pullup; incompatible with wired-OR or level-shifted reset buses | Select when driving CMOS inputs directly and board space permits simpler routing |
| TPS3808G125DBVR | Fixed 1.25V reset threshold; 1.8µA typical ICC; no watchdog timer; SOT-23-6 package | Lacks capacitor-adjustable timing and system-level fault detection capability | Choose for cost-sensitive, non-watchdog applications where 1.25V threshold matches system requirements |
Compared with MAX16056ATA22+, the MAX16058ATA22+ provides open-drain flexibility for multi-device reset coordination, while the TPS3808G125DBVR offers lower BOM cost but sacrifices programmability and ultra-low power - making it unsuitable for battery-critical or safety-monitored designs.
Availability
MAX16058ATA22+ is available at Aetrix Electronics and suitable for glucose monitors, patient monitoring systems, smart meters, and HVAC controllers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX16058ATA22+ 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-constrained and safety-critical embedded systems.
FAQ
What is the factory-trimmed reset threshold voltage for MAX16058ATA22+?
The MAX16058ATA22+ has a factory-trimmed reset threshold of 2.235V (typical), with tolerance of ±1.5% at +25°C and ±2.5% over the full -40°C to +125°C operating range. This value corresponds to the "22" suffix per Table 1 in the datasheet, and is laser-trimmed during production to ensure precision without external calibration.
Does MAX16058ATA22+ support watchdog timer disable functionality?
Yes, the MAX16058ATA22+ supports watchdog disable by connecting the SWT pin directly to GND. When grounded, the internal watchdog circuit is disabled and no timeout assertion occurs - a hardware-controlled method to eliminate unintended resets in systems where software supervision is unnecessary or handled externally.
What is the minimum recommended capacitor value for SRT to achieve valid reset timeout on MAX16058ATA22+?
The minimum recommended capacitor value for the SRT pin on MAX16058ATA22+ is 39pF, which yields a nominal reset timeout of ~200ms. Capacitors below this value may result in indeterminate timing behavior. Ceramic X7R dielectric types with leakage <10nA are strongly recommended to maintain accuracy across temperature.
Can MAX16058ATA22+ operate reliably at VCC = 1.2V?
Yes, MAX16058ATA22+ is fully specified to operate at VCC = 1.2V (minimum in -40°C to 0°C range), with guaranteed RESET assertion and validity down to VCC = 1.1V. At 1.2V, supply current remains ultra-low (~125–132nA), and reset threshold maintains ±2.5% accuracy - enabling use in sub-1.8V microcontroller systems.
How does the WDS pin affect watchdog timeout behavior in MAX16058ATA22+?
The WDS pin on MAX16058ATA22+ selects between two watchdog modes: grounding WDS enables normal mode (tWD), while tying WDS to VCC activates extended mode (tWD × 128). A state change on WDS clears the watchdog counter, and the selected mode determines the timeout multiplier applied to the base period set by the SWT capacitor.
MAX16058ATA22+ 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:
- 2.188V
- 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)
MAX16058ATA22+ FAQ
1.How can I place an order for MAX16058ATA22+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16058ATA22+ 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 MAX16058ATA22+ reliable?
The price and inventory of MAX16058ATA22+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16058ATA22+ is usually 5 days.
3.What payment methods are accepted for MAX16058ATA22+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16058ATA22+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16058ATA22+?
MAX16058ATA22+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16058ATA22+ 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 MAX16058ATA22+?
For technical support, including MAX16058ATA22+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16058ATA22+ requirements.
6.How does Aetrix verify that MAX16058ATA22+ is sourced from the original manufacturer or authorized distributors?
All MAX16058ATA22+ 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 MAX16058ATA22+ meets industry standards.
7.What is the process for return or replacement of MAX16058ATA22+?
All MAX16058ATA22+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16058ATA22+, 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 MAX16058ATA22+ part is unused and in its original packaging.
Return procedure for MAX16058ATA22+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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