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Analog Devices Inc./Maxim Integrated MAX16057ATT46+
- Part No.:
- MAX16057ATT46+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX16057ATT46+.pdf
- Description:
- IC SUPERVISOR P-P 4.6V 6-TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,507
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Product details
Overview
MAX16057ATT46+ from Analog Devices is a 6-pin TDFN ultra-low-power microprocessor supervisory circuit with factory-trimmed 4.625V reset threshold, 125nA typical supply current, and capacitor-adjustable reset timeout (10.5–17.0ms). It monitors single-supply VCC (1.1–5.5V) in battery-powered medical and portable electronics to ensure reliable power-on reset and brownout protection.
For engineers reviewing the MAX16057ATT46+ datasheet, MAX16057ATT46+ pinout, MAX16057ATT46+ application, or MAX16057ATT46+ equivalent, key selection factors include its watchdog-free design, push-pull RESET output, -40°C to +125°C automotive-grade operation, and compatibility with low-leakage ceramic capacitors on SRT for precise timeout tuning.
Technical Context
The MAX16057ATT46+ implements a precision bandgap-based voltage monitor with ±1.5% threshold accuracy at +25°C and ±2.5% over full temperature range. Its internal ramp-and-compare architecture uses SRT pin current (210–240nA) and threshold (1.173–1.297V) to generate a capacitor-dependent reset timeout period.
Unlike the MAX16056/MAX16058 family members, this variant omits watchdog timer circuitry (no WDI, SWT, or WDS pins), simplifying layout and eliminating watchdog-related timing dependencies. The device guarantees valid RESET assertion down to VCC = 1.1V and features transient immunity against ≤40µs, 100mV VCC glitches.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.625V (factory-trimmed, ±1.5% at +25°C); ensures accurate brownout detection for 4.5–5.0V systems |
| Supply Current | 125nA typ at +25°C; enables multi-year battery life in always-on glucose monitors and pagers |
| Operating Voltage | 1.1V to 5.5V; supports wide-input industrial sensors and legacy 3.3V/5V microcontrollers |
| Reset Timeout | 10.5–17.0ms (CSRT = 2700pF); adjustable via external capacitor for µP initialization timing compliance |
| Temperature Range | -40°C to +125°C; qualified for under-hood automotive and HVAC metering applications |
| Output Type | Push-pull RESET; eliminates need for external pullup resistor and reduces BOM count |
| Package | 6-pin TDFN (3mm × 3mm); saves board space vs. SOIC-8 while enabling high-density portable designs |
Pinout & Package
MAX16057ATT46+ is housed in a 6-pin TDFN-EP package (3mm × 3mm, 0.5mm pitch) with exposed pad (EP) recommended for grounding to improve thermal performance and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RESET | Active-low push-pull reset output | Asserts low during VCC undervoltage or MR activation; deasserts after tRP timeout; drives µP /RESET directly |
| 2 GND | Ground reference | Primary return path for internal circuitry and SRT/CSRT capacitor discharge |
| 3 MR | Manual reset input | CMOS-compatible active-low input; no internal pullup; requires external VCC tie if unused |
| 4 SRT | Reset timeout capacitor terminal | Sinks 210–240nA current to ground; sets tRP = 5.15×10⁶ × CSRT (seconds) |
| 5 VCC | Power supply input | Monitored supply rail (1.1–5.5V); bypass with 0.1µF ceramic capacitor to GND per layout best practice |
| 6 EP | Exposed thermal pad | Not electrically connected; must be soldered to PCB ground plane for thermal dissipation and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 125nA typical supply current enables >10-year battery life in patient monitors with infrequent wake cycles |
| Factory-trimmed VTH | 4.625V threshold (±1.5% at +25°C) eliminates external resistor divider and calibration overhead |
| Capacitor-adjustable tRP | External SRT capacitor (39pF–4.7µF) allows precise reset hold time tuning without firmware changes |
| VCC ≥ 1.1V RESET guarantee | Ensures deterministic reset behavior during deep brownout conditions where most µPs fail to operate |
| Transient immunity | Immune to ≤40µs, 100mV VCC transients-reduces false resets in noisy automotive or industrial environments |
Applications
| Glucose Monitors | Patient Monitors |
|---|---|
Use Scenario: Portable handheld glucose meters operating from coin-cell batteries with intermittent sensor activation. IC Role / Device Role / Timing Role: Supervises 3.3V system rail and asserts RESET until stable power is confirmed post-battery insertion or wake-up. Use Value: 125nA ICC extends battery life beyond 2 years; 4.625V threshold matches LiMnO₂ cell end-of-life voltage for graceful shutdown. | Use Scenario: Multi-parameter bedside monitors requiring fail-safe boot sequence and power-fail detection. IC Role / Device Role / Timing Role: Monitors main 5.0V DC-DC output and holds µP in reset during AC line dropout or backup battery switchover. Use Value: -40°C to +125°C rating supports operation in uncontrolled clinical environments; push-pull output drives multiple logic inputs without pullup. |
| Metering (Smart Meters) | HVAC Controllers |
Use Scenario: ANSI C12.22-compliant electricity meters deployed outdoors with wide ambient temperature swings. IC Role / Device Role / Timing Role: Validates 3.3V MCU supply after cold start and provides 15ms reset pulse to synchronize RF and metrology subsystems. Use Value: 6-pin TDFN footprint minimizes PCB area in space-constrained meter modules; 1.1V minimum VCC operation ensures reset validity during capacitor discharge decay. | Use Scenario: Embedded thermostats using low-power MCUs to manage compressor cycling and sensor polling. IC Role / Device Role / Timing Role: Supervises 2.5V LDO output powering MCU and analog front-end; triggers reset on brownout caused by inductive load switching. Use Value: Capacitor-adjustable tRP accommodates variable MCU boot times across firmware revisions; no watchdog simplifies safety-critical firmware validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16057ATT45+ | 4.500V reset threshold (vs. 4.625V); otherwise identical electrical specs and pinout | Suitable for systems with tighter 4.4–4.6V supply tolerance, e.g., regulated 4.5V rails | Select when exact 4.5V trip point is required; same SRT capacitor values apply |
| MAX6326UR46+T | 4.63V threshold, 1.6µA ICC, SOT23-3 package, fixed 200ms timeout | Lacks adjustable reset timeout and automotive temperature grade; suited for cost-sensitive consumer devices | Choose for simple drop-in replacement where ultra-low current and fine timeout control are not critical |
Compared with MAX16057ATT45+, the MAX16057ATT46+ offers a higher reset threshold for improved noise margin in 4.8V nominal systems; compared with MAX6326UR46+T, it delivers 13× lower supply current and field-programmable timeout-critical for battery longevity and design flexibility.
Availability
MAX16057ATT46+ is available at Aetrix Electronics and suitable for glucose monitors, patient monitors, smart metering, and HVAC controllers requiring stable component supply across extended product lifecycles.
Supply support for MAX16057ATT46+ 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 and automotive-grade applications, emphasizing nanoamp current draw and robust reset timing control.
FAQ
What is the factory-trimmed reset threshold voltage of the MAX16057ATT46+?
The MAX16057ATT46+ has a factory-trimmed reset threshold of 4.625V (typical), with ±1.5% accuracy at +25°C and ±2.5% over the full -40°C to +125°C temperature range. This value is confirmed in Table 1 of the datasheet under suffix "46", and applies exclusively to the MAX16057ATT46+ variant-not to other suffixes or family members like MAX16056.
Does the MAX16057ATT46+ include a watchdog timer function?
No, the MAX16057ATT46+ does not include a watchdog timer. As stated in the General Description and Pin Description sections, only MAX16056/MAX16058 variants feature watchdog circuitry (WDI, SWT, WDS pins); MAX16057/MAX16059 are explicitly defined as watchdog-free. The MAX16057ATT46+ has only six pins-RESET, GND, MR, SRT, VCC, and EP-with no watchdog-related terminals.
What is the recommended capacitor value for a 15ms reset timeout with the MAX16057ATT46+?
For a 15ms reset timeout, use a 2700pF capacitor on the SRT pin. Per Table 2 and the formula tRP = 5.15 × 10⁶ × CSRT (seconds), 2700pF yields 14.18ms (typical), falling within the specified 10.5–17.0ms range for CSRT = 2700pF. A low-leakage X7R ceramic capacitor is recommended to maintain timing accuracy across temperature.
Can the MAX16057ATT46+ operate with a 1.2V supply voltage?
Yes, the MAX16057ATT46+ operates down to 1.1V supply voltage, as specified in the Electrical Characteristics table. At VCC = 1.2V, it maintains full functionality-including valid RESET assertion, manual reset response, and SRT-based timeout generation-making it suitable for ultra-low-voltage energy-harvesting or sub-1.8V MCU systems.
Is the exposed pad (EP) on the MAX16057ATT46+ electrically connected?
No, the exposed pad (EP) on the MAX16057ATT46+ is not electrically connected to any internal circuitry. As noted in the Pin Description section, EP is a thermal pad intended for soldering to the PCB ground plane to enhance thermal dissipation and reduce EMI. It may be left unconnected, but grounding is strongly recommended for optimal performance.
MAX16057ATT46+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.625V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN (3x3)
MAX16057ATT46+ FAQ
1.How can I place an order for MAX16057ATT46+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16057ATT46+ 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 MAX16057ATT46+ reliable?
The price and inventory of MAX16057ATT46+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16057ATT46+ is usually 5 days.
3.What payment methods are accepted for MAX16057ATT46+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16057ATT46+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16057ATT46+?
MAX16057ATT46+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16057ATT46+ 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 MAX16057ATT46+?
For technical support, including MAX16057ATT46+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16057ATT46+ requirements.
6.How does Aetrix verify that MAX16057ATT46+ is sourced from the original manufacturer or authorized distributors?
All MAX16057ATT46+ 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 MAX16057ATT46+ meets industry standards.
7.What is the process for return or replacement of MAX16057ATT46+?
All MAX16057ATT46+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16057ATT46+, 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 MAX16057ATT46+ part is unused and in its original packaging.
Return procedure for MAX16057ATT46+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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