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Analog Devices Inc./Maxim Integrated MAX16058ATT29+
- Part No.:
- MAX16058ATT29+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16058ATT29+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,865
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Product details
Overview
MAX16058ATT29+ from Analog Devices is an ultra-low-power microprocessor supervisory circuit with factory-trimmed 2.925V reset threshold, capacitor-adjustable reset timeout (10.5–17.0ms), and integrated watchdog timer supporting normal/extended modes. It asserts active-low RESET during VCC brownout, manual reset, or watchdog timeout, and operates across -40°C to +125°C for automotive and portable medical systems.
For engineers reviewing the MAX16058ATT29+ datasheet, MAX16058ATT29+ pinout, MAX16058ATT29+ application, or MAX16058ATT29+ equivalent, key selection criteria include its 125nA typical supply current, open-drain RESET output, 8-pin TDFN-EP package, watchdog disable capability via SWT-to-GND, and compatibility with 1.1V–5.5V supply rails in battery-constrained designs.
Technical Context
The MAX16058ATT29+ implements a precision voltage monitor with ±1.5% threshold accuracy at +25°C and ±2.5% over full temperature range, coupled with two independent RC-timed functions: SRT pin controls reset timeout (tRP = 5.15 × 10⁶ × CSRT), while SWT/WDS pins configure watchdog timeout (tWD or tWD × 128) with capacitor-based timing and open-detect fault handling.
Its internal architecture includes a hysteresis-enhanced comparator (0.5% VHYST), low-leakage ramp-current generators (IRAMP1/IRAMP2 = 197–282nA), and guaranteed RESET validity down to VCC = 1.1V - enabling robust operation in noisy, low-voltage environments where supply transients must not falsely trigger reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 125nA typ at VCC = 1.8V, TA = –40°C to +125°C - enables multi-year battery life in always-on medical sensors |
| Reset Threshold | 2.925V (factory-trimmed, suffix "29"), ±2.5% over –40°C to +125°C - ensures precise brownout detection for 3.0V/3.3V systems |
| Reset Timeout | 10.5–17.0ms with CSRT = 2700pF - configurable via external capacitor to match µP power-up timing requirements |
| Watchdog Timeout | 5–9.5ms (normal mode) or up to 217s (extended mode with 0.33µF) - supports flexible firmware watchdog servicing intervals |
| Operating Voltage | 1.1V to 5.5V - allows direct monitoring of Li-ion, coin-cell, or regulated 1.2V/1.8V rails without level-shifting |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial metering applications |
| Output Type | Open-drain RESET - enables flexible logic-level interfacing and wired-OR reset bus configurations |
Pinout & Package
The MAX16058ATT29+ is housed in a 3mm × 3mm, 8-pin TDFN-EP package with exposed pad (EP) intended for grounding to improve thermal performance and EMI immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Drives low during fault conditions; requires external pullup for logic-high assertion; sinks ≥50µA at 0.3V |
| 2 - GND | Ground reference | Primary return path for all internal circuits and external capacitors (SRT, SWT) |
| 3 - SWT | Watchdog timeout capacitor input | Connects to GND via CSWT to set base watchdog period; grounded to disable watchdog function |
| 4 - MR | Manual reset input | Active-low asynchronous reset trigger; no internal pullup - must be tied to VCC if unused |
| 5 - SRT | Reset timeout capacitor input | Connects to GND via CSRT to define reset deassertion delay after VCC recovery |
| 6 - WDI | Watchdog input | Falling edge resets watchdog timer; accepts pulses as short as 150ns; must be toggled within tWD |
| 7 - WDS | Watchdog select input | GND = normal mode (tWD); VCC = extended mode (tWD × 128); transition clears timer |
| 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 quiescent current | 125nA typical supply current enables >10-year battery life in glucose monitors and portable meters |
| Capacitor-adjustable timing | Independent SRT and SWT pins allow precise, board-level tuning of reset and watchdog delays without firmware changes |
| Watchdog disable via SWT | Connecting SWT to GND fully disables watchdog functionality - simplifies qualification for non-watchdog applications |
| Reset validity down to 1.1V | Guaranteed RESET assertion even as VCC collapses, preventing undefined µP behavior during deep brownout |
| Transient immunity | Withstands ≤40µs, 100mV VCC transients without false reset - critical for noisy automotive power domains |
Applications
| Portable Medical Sensors | Battery-Powered Metering |
|---|---|
Use Scenario: Continuous glucose monitoring devices powered by CR2032 coin cells requiring multi-year operation without maintenance. IC Role / Device Role / Timing Role: Supervises VCC during cold-start and battery depletion; asserts RESET if voltage drops below 2.925V to prevent corrupted sensor readings. Use Value: 125nA supply current extends battery life beyond 5 years; open-drain RESET interfaces directly with low-voltage µP I/O. | Use Scenario: Smart electricity/water meters deployed in unattended field locations with intermittent solar charging. IC Role / Device Role / Timing Role: Monitors main 3.3V rail and triggers watchdog reset if firmware hangs during data transmission cycles. Use Value: Capacitor-configurable tWD (e.g., 65s) aligns with GPRS transmission intervals; extended mode supports longer sleep periods. |
| Automotive Body Control | Industrial HVAC Controllers |
Use Scenario: Under-hood ambient temperature sensors exposed to wide thermal swings and load-dump transients. IC Role / Device Role / Timing Role: Provides fail-safe reset during ignition cycling and alternator ripple; immune to 40µs VCC glitches. Use Value: –40°C to +125°C rating and ±2.5% VTH tolerance ensure reliable operation across engine bay thermal profiles. | Use Scenario: Embedded HVAC controllers in commercial buildings using 24VAC-derived 3.3V supplies with high EMI. IC Role / Device Role / Timing Role: Detects brownout on isolated 3.3V rail and holds µP in reset until stable; manual reset supports field service recovery. Use Value: MR input enables technician-initiated reset without power cycle; push-pull alternative (MAX16056) not used here due to open-drain bus sharing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16056ATA29+ | Same 2.925V threshold and 8-pin TDFN, but push-pull RESET output and identical watchdog features | Required where active-high reset release or driving capacitive loads without external pullup is needed | Select MAX16056ATA29+ when system design mandates push-pull drive strength or eliminates need for external pullup resistor |
| TPS3808G33DBVR | 3.3V fixed threshold, 1.6µA supply current, no watchdog, SOT-23-6 package | Suitable for cost-sensitive, non-watchdog applications with tighter layout constraints and higher current budget | Choose TPS3808G33DBVR only if watchdog functionality is unnecessary and 1.6µA ICC is acceptable for battery lifetime |
Compared with MAX16056ATA29+, the MAX16058ATT29+ trades push-pull drive for open-drain flexibility and bus-sharing capability; versus TPS3808G33DBVR, it delivers 13× lower supply current and integrated watchdog - making it optimal for long-life, safety-critical portable systems.
Availability
MAX16058ATT29+ is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered metering, automotive body control, and industrial HVAC controllers requiring stable component supply across extended product lifecycles.
Supply support for MAX16058ATT29+ 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-constrained and automotive-grade applications, emphasizing nanoamp current draw, wide temperature operation, and field-configurable timing.
FAQ
What is the factory-trimmed reset threshold voltage for MAX16058ATT29+?
The MAX16058ATT29+ has a factory-trimmed reset threshold of 2.925V (minimum 2.852V, maximum 2.998V at +25°C), as indicated by the "29" suffix per Table 1 in the datasheet. This value is guaranteed over –40°C to +125°C with ±2.5% tolerance, making it suitable for precise monitoring of 3.0V system rails.
Does MAX16058ATT29+ support watchdog timer disable functionality?
Yes, the MAX16058ATT29+ supports watchdog disable: connecting the SWT pin directly to GND disables the watchdog timer entirely. This is confirmed in the Pin Description and Detailed Description sections, where grounding SWT forces infinite timeout and prevents watchdog-induced resets - useful for qualification or simplified firmware.
What package type and dimensions does MAX16058ATT29+ use?
The MAX16058ATT29+ uses an 8-pin TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) package measuring 3mm × 3mm. The exposed pad (EP) is designated for grounding to enhance thermal dissipation and reduce EMI susceptibility, as specified in the Package Information section and top-marking table.
Can MAX16058ATT29+ operate with supply voltages below 1.8V?
Yes, the MAX16058ATT29+ operates from 1.1V to 5.5V, including sub-1.8V rails. Its 125nA typical supply current and guaranteed RESET validity down to VCC = 1.1V enable use with single-cell LiFePO₄ (2.5–3.6V) or dual alkaline (1.8–3.2V) sources - critical for ultra-low-voltage portable equipment.
How is the reset timeout period configured on MAX16058ATT29+?
The reset timeout period on MAX16058ATT29+ 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 for CSRT = 2700pF. Ceramic X7R capacitors are recommended for low leakage and stability across temperature.
MAX16058ATT29+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.925V
- 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)
MAX16058ATT29+ FAQ
1.How can I place an order for MAX16058ATT29+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16058ATT29+ 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 MAX16058ATT29+ reliable?
The price and inventory of MAX16058ATT29+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16058ATT29+ is usually 5 days.
3.What payment methods are accepted for MAX16058ATT29+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16058ATT29+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16058ATT29+?
MAX16058ATT29+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16058ATT29+ 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 MAX16058ATT29+?
For technical support, including MAX16058ATT29+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16058ATT29+ requirements.
6.How does Aetrix verify that MAX16058ATT29+ is sourced from the original manufacturer or authorized distributors?
All MAX16058ATT29+ 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 MAX16058ATT29+ meets industry standards.
7.What is the process for return or replacement of MAX16058ATT29+?
All MAX16058ATT29+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16058ATT29+, 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 MAX16058ATT29+ part is unused and in its original packaging.
Return procedure for MAX16058ATT29+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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