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Analog Devices Inc./Maxim Integrated MAX16058ATA44+T
- Part No.:
- MAX16058ATA44+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16058ATA44+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,430
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Product details
Overview
The MAX16058ATA44+T from Analog Devices is an ultra-low-power microprocessor supervisory IC with open-drain RESET output, factory-trimmed 4.375V reset threshold (±2.5% over -40°C to +125°C), capacitor-adjustable reset timeout (10.5–17.0 ms typical with 2700pF), and integrated watchdog timer supporting normal/extended modes via WDS input. It operates from 1.1V to 5.5V supply and draws only 125nA typical supply current, enabling use in battery-powered glucose monitors and portable medical devices.
For engineers reviewing the MAX16058ATA44+T datasheet, MAX16058ATA44+T pinout, MAX16058ATA44+T application, or MAX16058ATA44+T equivalent, key selection criteria include its 8-pin TDFN-EP package, watchdog timeout scalability (up to 217s with 0.33µF SWT capacitor), VCC transient immunity (≤40µs for 100mV glitch), guaranteed RESET validity down to VCC = 1.1V, and automotive-grade -40°C to +125°C operation.
Technical Context
This device implements a precision voltage monitor with hysteresis (0.5%) and dual ramp-based timing circuits: one for reset timeout (SRT pin, 5.15×10⁶ × CSRT) and another for watchdog timeout (SWT pin, floor[CSWT × 5.15×10⁶ / 6.4ms] × 6.4ms + 3.2ms). The WDS input selects between normal (tWD) and extended (tWD × 128) watchdog modes, with automatic sampling of SWT capacitance after RESET deassertion.
Its BiCMOS process enables nanoscale leakage control, delivering 125nA typical ICC across full temperature range while maintaining robust MR input response (250ns MR-to-RESET delay), 150ns WDI pulse detection, and watchdog fault recovery within one tRP cycle. The exposed pad (EP) must be connected to GND for thermal and electrical integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current (ICC) | 125nA typical at VCC = 1.8V, TA = -40°C to +125°C - enables multi-year battery life in always-on medical sensors |
| Reset Threshold (VTH) | 4.375V ±2.5% over -40°C to +125°C - matches 4.5V system rails with margin for brownout detection |
| Reset Timeout (tRP) | 10.5–17.0 ms typical with 2700pF SRT capacitor - ensures reliable µP initialization after power-up |
| Watchdog Timeout (tWD) | 5–9.5 ms typical base period; up to 217s in extended mode - supports long software execution cycles without false resets |
| Operating Voltage Range | 1.1V to 5.5V - allows direct monitoring of Li-ion, coin-cell, or regulated 3.3V/5V supplies |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial embedded applications |
| RESET Output Type | Open-drain - enables level-shifting to µP I/O voltages independent of VCC (e.g., 1.8V µP with 3.3V VCC) |
Pinout & Package
MAX16058ATA44+T uses an 8-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) requiring connection 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. (no internal connection), Pin 7 is WDS (watchdog select input), and Pin 8 is VCC (supply input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain reset output | Asserts low during VCC undervoltage, MR activation, or watchdog timeout; requires external pullup for logic-level compatibility |
| 2 - GND | Ground reference | Common return path for all internal circuits and external capacitors (SRT, SWT); EP must connect here |
| 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 tie to VCC if unused |
| 5 - SRT | Reset timeout capacitor input | Connects to GND via capacitor (39pF–4.7µF) to set reset assertion duration after fault clearance |
| 6 - N.C. | No internal connection | Unbonded pin; leave unconnected - no routing or soldering required |
| 7 - WDS | Watchdog mode select | GND = normal mode (tWD); VCC = 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 125nA supply current | Enables >10-year battery life in coin-cell-powered patient monitors without compromising supervision reliability |
| Capacitor-adjustable reset timeout | Eliminates fixed-timing ICs and allows precise matching to µP boot sequence via single SRT capacitor |
| Watchdog with 128× timeout extension | Supports firmware with variable execution time (e.g., sensor calibration loops) without increasing reset risk |
| Watchdog capacitor open-detect function | Flags PCB assembly defects (e.g., missing SWT cap) by asserting continuous RESET during startup |
| Guaranteed RESET validity down to VCC = 1.1V | Ensures deterministic reset behavior during deep brownout conditions where other supervisors fail |
| Power-supply transient immunity | Rejects ≤40µs, 100mV VCC glitches - prevents spurious resets in noisy automotive or industrial environments |
Applications
| Battery-Powered Glucose Monitor | Automotive Cabin Temperature Sensor |
|---|---|
Use Scenario: Continuous glucose sensing in wearable patch with CR2032 coin cell and low-power ARM Cortex-M0+ MCU. IC Role / Device Role / Timing Role: Monitors 3.0V regulated supply; asserts RESET on brownout and provides 15ms timeout for ADC initialization; watchdog guards against firmware lockup during RF transmission. Use Value: 125nA ICC extends battery life beyond 2 years; open-drain RESET interfaces directly to 1.8V MCU I/O; 4.375V threshold detects regulator failure before critical analog front-end dropout. |
Use Scenario: HVAC control module mounted near vehicle dashboard with wide ambient temperature swings (-40°C to +85°C). IC Role / Device Role / Timing Role: Supervises 5.0V system rail; triggers reset on cold-start VCC ramp failure; manual reset supports field service diagnostics via button press. Use Value: -40°C to +125°C qualification ensures operation during engine-off summer heat soak; MR input enables technician-initiated recalibration; transient immunity prevents resets from alternator ripple. |
| Portable ECG Recorder | Smart Energy Meter Display Module |
Use Scenario: Handheld ECG device using rechargeable Li-ion battery and ultra-low-power SAR ADC. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output; capacitor-adjustable tRP accommodates variable ADC settling time; WDS pin configures extended watchdog for sleep/wake cycles. Use Value: SRT capacitor tuning avoids over-engineered reset delays that waste boot time; 125nA ICC minimizes quiescent drain during standby; open-drain RESET isolates ADC reference domain from µP domain. |
Use Scenario: AMI meter display unit powered from isolated 3.3V DC-DC converter with intermittent GSM transmission. IC Role / Device Role / Timing Role: Supervises 3.3V rail feeding display driver and modem; watchdog timeout scaled to 60s via SWT capacitor to cover full GSM handshake sequence. Use Value: Extended watchdog mode eliminates need for frequent WDI toggling, reducing µP overhead; 4.375V threshold provides margin above 3.3V nominal while detecting LDO dropout; TDFN package saves space on crowded meter PCB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16056ATA44+T | Push-pull RESET output; identical threshold, timing, and watchdog specs | Requires external pullup resistor only if interfacing to higher-voltage logic; no open-drain flexibility | Select when driving CMOS inputs directly or when board layout prohibits pullup resistors |
| TLV809E43DBZR | Fixed 4.3V threshold; no watchdog; 350nA ICC; SOT-23-3 package | Lacks capacitor-adjustable timing and fault-detection features; simpler integration but less design flexibility | Select for cost-sensitive, non-safety-critical applications where watchdog and timing adjustability are unnecessary |
Compared with MAX16056ATA44+T, the push-pull variant simplifies interface but sacrifices level-shifting capability; compared with TLV809E43DBZR, MAX16058ATA44+T delivers 3.5× lower supply current, adjustable timing, and watchdog functionality essential for certified medical and automotive systems.
Availability
MAX16058ATA44+T is available at Aetrix Electronics and suitable for battery-powered medical devices, automotive cabin sensors, and portable diagnostic equipment requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX16058ATA44+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, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX16056–MAX16059 family was designed specifically for ultra-low-power system supervision in space-constrained, battery-operated applications where nanoscale current consumption and configurable timing are mandatory - such as implantable and wearable medical electronics.
FAQ
What is the factory-trimmed reset threshold voltage for MAX16058ATA44+T?
The MAX16058ATA44+T has a factory-trimmed reset threshold of 4.375V, 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 "44" suffix per Table 1 in the datasheet and is laser-trimmed during production to ensure accuracy without external calibration.
Does MAX16058ATA44+T include a watchdog timer, and how is it configured?
Yes, MAX16058ATA44+T includes a fully functional watchdog timer. It is configured using three pins: SWT (capacitor input sets base timeout), WDS (selects normal or 128× extended mode), and WDI (fed by µP to prevent timeout). The watchdog asserts RESET if WDI is not toggled within the selected timeout window, and clears on any falling edge at WDI or transition at WDS.
What package type and footprint does MAX16058ATA44+T use?
MAX16058ATA44+T uses an 8-pin 3mm × 3mm TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) package. The exposed pad (EP) must be soldered to a GND plane for thermal performance and electrical stability. Land pattern reference is Analog Devices' package drawing T833-2 (outline 21-0137, land pattern 90-0059).
Can MAX16058ATA44+T operate with supply voltages below 1.8V?
Yes, MAX16058ATA44+T operates from 1.1V to 5.5V. Its 125nA typical supply current and guaranteed RESET functionality down to VCC = 1.1V make it suitable for single-cell Li-ion (2.5–4.2V) or alkaline/coin-cell (1.1–3.0V) systems. Performance specifications including VTH accuracy and tRP are validated across this full range.
How is the reset timeout period adjusted on MAX16058ATA44+T?
The reset timeout period (tRP) is adjusted by connecting a capacitor (CSRT) between the SRT pin and GND. The relationship is tRP = 5.15 × 10⁶ × CSRT (tRP in seconds, CSRT in farads). For example, a 2700pF capacitor yields ~14.18ms typical timeout. Ceramic X7R capacitors with leakage <10nA are recommended per datasheet guidance.
MAX16058ATA44+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:
- 4.375V
- 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)
MAX16058ATA44+T FAQ
1.How can I place an order for MAX16058ATA44+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16058ATA44+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 MAX16058ATA44+T reliable?
The price and inventory of MAX16058ATA44+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16058ATA44+T is usually 5 days.
3.What payment methods are accepted for MAX16058ATA44+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16058ATA44+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16058ATA44+T?
MAX16058ATA44+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16058ATA44+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 MAX16058ATA44+T?
For technical support, including MAX16058ATA44+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16058ATA44+T requirements.
6.How does Aetrix verify that MAX16058ATA44+T is sourced from the original manufacturer or authorized distributors?
All MAX16058ATA44+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 MAX16058ATA44+T meets industry standards.
7.What is the process for return or replacement of MAX16058ATA44+T?
All MAX16058ATA44+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16058ATA44+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 MAX16058ATA44+T part is unused and in its original packaging.
Return procedure for MAX16058ATA44+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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