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Analog Devices Inc./Maxim Integrated MAX16058ATA18+T
- Part No.:
- MAX16058ATA18+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16058ATA18+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,036
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Product details
Overview
MAX16058ATA18+T from Analog Devices is an ultra-low-power microprocessor supervisory circuit with open-drain RESET output, factory-trimmed 1.8V 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 with 128× extended mode. It monitors single-supply systems in battery-powered medical and portable electronics where supply current below 125nA (typ) and guaranteed RESET validity down to VCC = 1.1V are critical.
For engineers reviewing the MAX16058ATA18+T datasheet, MAX16058ATA18+T pinout, MAX16058ATA18+T application, or MAX16058ATA18+T equivalent, this page delivers verified technical context, exact pin functions for TDFN-8EP layout, capacitor-based timing design guidance, automotive-grade thermal specs (θJA = 41°C/W), and validated alternative options for low-power supervisory replacement.
Technical Context
The MAX16058ATA18+T 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 one for watchdog timeout (SWT pin, floor[CSWT × 5.15×10⁶/6.4ms] × 6.4ms + 3.2ms). Its WDS input selects normal or 128× extended watchdog mode, and WDI accepts falling-edge pulses ≥150ns wide to clear the timer.
It operates across 1.1V–5.5V supply range with supply current as low as 125nA (typ at VCC = 1.8V, TA = –40°C to +125°C), supports manual reset via MR input (250ns delay), and guarantees RESET assertion during brownout with immunity to ≤40µs, 100mV VCC transients. The exposed pad (EP) must be connected to GND for thermal and electrical performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 125nA typical at VCC = 1.8V, –40°C to +125°C - enables multi-year battery life in glucose monitors and pagers |
| Reset Threshold | 1.800V ±2.5% over temperature - factory-trimmed for precise brownout detection without external resistors |
| Reset Timeout | 14.18ms typical with 2700pF on SRT - adjustable from ~10ms to >16s via capacitor selection per Table 2 |
| Watchdog Timeout | 6.4ms typical base period (TA = +25°C); extends to 819.2ms with 128× mode - prevents firmware lockup in unattended devices |
| Operating Range | –40°C to +125°C - fully specified for automotive under-hood and industrial metering applications |
| Output Type | Open-drain RESET - allows level-shifting to logic supplies up to 5.5V and wired-OR configuration |
| VCC Range | 1.1V to 5.5V - supports operation during deep brownout and compatibility with 1.2V–3.3V µP domains |
Pinout & Package
MAX16058ATA18+T is housed in a 3mm × 3mm, 8-pin TDFN-EP package with exposed pad (EP) requiring connection to GND. Pin 1 is RESET (open-drain active-low output), Pin 2 is GND, Pin 3 is SWT (watchdog timeout capacitor input), Pin 4 is MR (manual reset input, no internal pullup), Pin 5 is SRT (reset timeout capacitor input), Pin 6 is N.C. (not internally connected), 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 drop below 1.8V, MR low, or watchdog timeout; requires external pullup for logic-level compatibility |
| 2 - GND | Ground reference | Common return path for all internal circuits and EP thermal conduction; must be low-impedance |
| 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 |
| 5 - SRT | Reset timeout capacitor input | Connects to GND via capacitor (39pF–4.7µF) to set reset deassertion delay after VCC recovery |
| 6 - N.C. | No connection | Not bonded; leave floating or unconnected on PCB - no electrical function |
| 7 - WDS | Watchdog select input | Ground for normal mode (tWD), VCC for 128× extended mode; transition clears watchdog timer |
| 8 - VCC | Power supply input | Monitored supply rail (1.1V–5.5V); 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 portable medical devices |
| Capacitor-adjustable timing | SRT and SWT pins eliminate trim resistors and allow field-programmable reset/watchdog periods |
| Watchdog capacitor open detect | SWT < 470pF causes continuous RESET assertion - detects PCB assembly faults or missing capacitor |
| Transient immunity | Immune to ≤40µs, 100mV VCC glitches - avoids spurious resets in noisy automotive power rails |
| Guaranteed RESET down to 1.1V | Valid reset signal even during deep brownout - ensures µP remains held until stable supply returns |
| Automotive temperature grade | –40°C to +125°C operation qualified per AEC-Q100 - suitable for engine control and HVAC modules |
Applications
| Glucose Monitors | Patient Monitors |
|---|---|
Use Scenario: Portable handheld device powered by coin-cell battery, requiring reliable boot-up and fault recovery during low-voltage battery discharge. IC Role / Device Role / Timing Role: Supervisory IC asserting open-drain RESET to hold ARM Cortex-M0 MCU in reset until VCC ≥ 1.8V and stable; watchdog monitors firmware heartbeat. Use Value: 125nA quiescent current extends battery life beyond 2 years; capacitor-adjustable tRP ensures proper µP initialization timing across temperature. |
Use Scenario: Bedside vital-sign monitor with multiple sensors and wireless transmission, operating continuously on AC/DC adapter with backup battery. IC Role / Device Role / Timing Role: Voltage supervisor detecting brownout on 3.3V system rail; MR input enables clinician-initiated system reset without power cycle. Use Value: Guaranteed RESET validity down to VCC = 1.1V prevents erratic sensor readings during transient dips; open-drain output interfaces directly to 5V UART logic. |
| Smart Meters | HVAC Controllers |
Use Scenario: Electricity/water meter deployed outdoors with wide ambient temperature swings and intermittent RF transmission bursts. IC Role / Device Role / Timing Role: Resets metering SoC during cold-start and detects firmware hang via WDI pulse monitoring; WDS enables long watchdog intervals for infrequent wake-ups. Use Value: –40°C to +125°C rating ensures reliability in unheated enclosures; 128× watchdog mode supports 200+ second sleep cycles without false triggers. |
Use Scenario: Residential HVAC control board powered from 24VAC-derived 5V rail, subject to transformer inrush and relay switching noise. IC Role / Device Role / Timing Role: Monitors 5V rail for undervoltage; uses SRT capacitor to set 100ms reset hold time ensuring EEPROM write completion before µP restart. Use Value: Power-supply transient immunity rejects 30µs spikes from relay coils; push-pull alternatives not used here due to need for level-shifted reset signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16056ATA18+T | Push-pull RESET output; identical timing, threshold, and package | Requires no external pullup; unsuitable where level-shifting or wired-OR is needed | Select when driving CMOS inputs directly and minimizing BOM count |
| TLV809E18DBVR | Fixed 1.8V threshold, no watchdog, 350nA ICC, SOT-23-3 package | Lacks capacitor-adjustable timing and fault-detection features; limited to basic reset-only use | Select only for cost-sensitive, space-constrained designs where watchdog and timing flexibility are unnecessary |
Compared with MAX16056ATA18+T, the MAX16058ATA18+T provides essential open-drain flexibility for multi-rail systems, while TLV809E18DBVR sacrifices watchdog capability and ultra-low power for smaller footprint and lower unit cost - making it viable only in non-critical, reset-only applications.
Availability
MAX16058ATA18+T is available at Aetrix Electronics and suitable for glucose monitors, patient monitors, and smart meters requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for MAX16058ATA18+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.
The MAX16056–MAX16059 family was designed specifically for ultra-low-power, capacitor-programmable supervisory functions in battery-critical and automotive-qualified applications - emphasizing nanoamp ICC, wide VCC range, and robust transient immunity.
FAQ
What is the factory-trimmed reset threshold voltage of the MAX16058ATA18+T?
The MAX16058ATA18+T has a factory-trimmed reset threshold of 1.800V, 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 "18", and applies specifically to the MAX16058ATA18+T variant - not to other suffixes or family members.
Does the MAX16058ATA18+T include a watchdog timer, and how is it configured?
Yes, the MAX16058ATA18+T includes a configurable watchdog timer. It is enabled by connecting a capacitor between SWT and GND (2275pF–0.54µF), and its timeout period is selected using the WDS pin: grounded for normal mode (base period), or tied to VCC for 128× extended mode. The WDI pin must receive a falling edge within each timeout period to prevent reset assertion.
What package type and pin count does the MAX16058ATA18+T use?
The MAX16058ATA18+T uses an 8-pin TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) package measuring 3mm × 3mm. Pin 1 is RESET (open-drain), 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, and Pin 8 is VCC. The exposed pad (EP) must be soldered to GND for thermal and electrical performance.
Can the MAX16058ATA18+T operate with supply voltages below 1.8V?
Yes, the MAX16058ATA18+T operates from 1.1V to 5.5V. While its reset threshold is fixed at 1.8V, it continues to function - asserting RESET when VCC falls below 1.8V and maintaining valid RESET output down to VCC = 1.1V. Below 1.1V, RESET behavior is not guaranteed, and the device enters undefined state.
How is the reset timeout period adjusted on the MAX16058ATA18+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. Recommended capacitor types are low-leakage X7R ceramics (39pF–4.7µF range).
MAX16058ATA18+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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.8V
- 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)
MAX16058ATA18+T FAQ
1.How can I place an order for MAX16058ATA18+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16058ATA18+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 MAX16058ATA18+T reliable?
The price and inventory of MAX16058ATA18+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16058ATA18+T is usually 5 days.
3.What payment methods are accepted for MAX16058ATA18+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16058ATA18+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16058ATA18+T?
MAX16058ATA18+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16058ATA18+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 MAX16058ATA18+T?
For technical support, including MAX16058ATA18+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16058ATA18+T requirements.
6.How does Aetrix verify that MAX16058ATA18+T is sourced from the original manufacturer or authorized distributors?
All MAX16058ATA18+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 MAX16058ATA18+T meets industry standards.
7.What is the process for return or replacement of MAX16058ATA18+T?
All MAX16058ATA18+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16058ATA18+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 MAX16058ATA18+T part is unused and in its original packaging.
Return procedure for MAX16058ATA18+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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