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Analog Devices Inc./Maxim Integrated MAX16055CAUB+
- Part No.:
- MAX16055CAUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX16055CAUB+.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,686
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Product details
Overview
MAX16055CAUB+ from Maxim Integrated is a precision hex voltage microprocessor (µP) supervisory circuit that monitors up to six system supply voltages-including IN1 (3.3V), IN2–IN6 (adjustable or factory-set)-and asserts a single active-low open-drain RESET output when any falls below its threshold. It features factory-trimmed thresholds for 3.3V, 1.8V, and adjustable inputs down to 0.5V with ±1.5% accuracy, 140ms minimum reset timeout, and operation from -40°C to +125°C in automotive systems.
For engineers reviewing the MAX16055CAUB+ datasheet, MAX16055CAUB+ pinout, MAX16055CAUB+ application, or MAX16055CAUB+ equivalent, key selection criteria include its 10-pin µMAX package, dual-voltage validity (RESET valid if IN1 ≥1V or IN2 ≥1V), internal 70µA RESET pullup, TOL-selectable ±5%/±10% threshold tolerance, and immunity to short supply transients.
Technical Context
The MAX16055CAUB+ integrates six independent voltage comparators with a shared precision bandgap reference and internal resistor-divider networks for fixed thresholds, plus configurable inputs accepting external dividers for sub-1V monitoring. Its architecture supports simultaneous multi-rail supervision without external timing components.
It uses BiCMOS process technology to achieve low input bias current (<0.1µA per monitored input), 60ppm/°C threshold temperature coefficient, and built-in 0.3% hysteresis per channel-enabling robust noise immunity while maintaining tight threshold accuracy across the full -40°C to +125°C range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Input | Powered from IN1 (1.0V to 5.5V); IN1 also serves as primary monitored rail |
| Monitored Rails | Six inputs: IN1 = 3.3V (fixed), IN2–IN6 = adjustable (down to 0.5V) per MAX16055C variant |
| Reset Threshold Accuracy | ±1.5% for adjustable inputs; factory-trimmed ±1.5% typical for fixed rails (e.g., 1.8V ±5% or ±10% via TOL pin) |
| Reset Timeout Period | 140ms minimum after all supplies exceed thresholds-ensures stable processor initialization |
| RESET Output Type | Active-low open-drain with 70µA internal pullup to IN1-eliminates need for external pullup in many 3.3V logic interfaces |
| Operating Temperature | -40°C to +125°C-qualified for under-hood automotive and industrial embedded applications |
| Transient Immunity | Immune to IN_ transients ≤100ns at ≥50mV overdrive-prevents false resets during power rail noise |
Pinout & Package
MAX16055CAUB+ is housed in a 10-pin µMAX® package (3mm × 3mm, 0.5mm pitch), RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | Primary power supply & monitored voltage input | Device power source (1.0V–5.5V); RESET remains valid if IN1 ≥1V; requires 0.1µF bypass capacitor to GND |
| 2 (IN2) | Adjustable voltage monitor input | Configurable threshold (0.5V internal reference); accepts external divider for monitoring voltages down to 0.5V |
| 3 (IN3) | Adjustable voltage monitor input | Same architecture as IN2; used in MAX16055C for flexible multi-rail supervision |
| 4 (IN4) | Fixed 1.8V monitor input | Factory-trimmed for 1.8V ±5% or ±10% (selected by TOL pin); no external components required |
| 5 (IN5) | Adjustable voltage monitor input | Configurable threshold; enables monitoring of auxiliary rails like DDR termination or FPGA I/O supplies |
| 6 (IN6) | Adjustable voltage monitor input | Provides sixth independent monitoring channel; supports custom voltage sequencing validation |
| 7 (TOL) | Threshold tolerance select | Logic-level input: GND = -5% tolerance, IN1 = -10% tolerance-sets hysteresis and trip point for all channels |
| 8 (MR) | Active-low manual reset input | Internally pulled high (20kΩ to IN1); 1µs minimum pulse width; 100ns glitch rejection |
| 9 (RESET) | Active-low open-drain reset output | Asserts low on any undervoltage event; remains low for ≥140ms after recovery; 70µA internal pullup to IN1 |
| 10 (GND) | Analog/digital ground reference | Common return for all inputs, outputs, and internal circuitry; must be low-impedance connection |
Key Features
| Feature | Design Value |
|---|---|
| Hex-supply supervision in single 3mm × 3mm package | Reduces PCB area vs. six discrete supervisors; eliminates inter-channel timing skew |
| Adjustable thresholds down to 0.5V with 1.5% accuracy | Enables precise monitoring of modern low-voltage cores (e.g., ARM Cortex-A series, LPDDR4 VDDQ) |
| Internal 70µA RESET pullup to IN1 | Removes need for external pullup in 3.3V systems; simplifies BOM and layout |
| 140ms min reset timeout with temperature-stable timing | Guarantees sufficient hold time for complex processors (e.g., Intel Atom, NXP i.MX8) during power-up |
| TOL-selectable ±5%/±10% threshold tolerance | Allows matching to varying supply tolerances without redesigning external resistor networks |
| Immunity to ≤100ns supply transients | Prevents spurious resets in noisy environments (e.g., motor drives, switching power supplies) |
Applications
| Telecommunications Base Stations | Automotive ADAS ECUs |
|---|---|
Use Scenario: Monitoring multiple power rails (3.3V PHY, 1.8V SerDes, 1.2V core, 0.9V memory) in 5G remote radio units. IC Role / Device Role / Timing Role: Centralized voltage supervisor ensuring synchronized reset assertion across FPGA, RF transceivers, and PMICs. Use Value: Single-chip supervision reduces component count by 83% vs. discrete solutions and guarantees <200ms reset hold time for deterministic boot. | Use Scenario: Validating power integrity for camera sensor, radar processor, and CAN FD transceiver rails in front-camera ECU. IC Role / Device Role / Timing Role: Fault-tolerant supervisor asserting RESET if any rail (e.g., 3.3V sensor bias, 1.8V ISP core, 1.2V SoC I/O) drops during cold-crank or load-dump events. Use Value: -40°C to +125°C operation and transient immunity ensure reliable reset behavior in under-hood environments. |
| Industrial PLC Controllers | High-End Printers |
Use Scenario: Supervising isolated 24V-to-5V/3.3V/1.8V/1.2V/0.9V DC-DC outputs powering MCU, Ethernet PHY, IO expanders, and analog front-ends. IC Role / Device Role / Timing Role: Hex-monitoring IC validating rail sequencing compliance before enabling safety-critical firmware execution. Use Value: Adjustable inputs allow monitoring of nonstandard rails (e.g., 2.1V analog supply) using external dividers without adding components. | Use Scenario: Ensuring stable power to ASIC, stepper drivers, thermal printhead, and USB interface in multifunction printers. IC Role / Device Role / Timing Role: Supervisor detecting brownout on 3.3V logic, 1.8V memory, 1.2V CPU core, and 0.9V GPU rails during rapid duty-cycle changes. Use Value: 140ms reset timeout prevents premature firmware execution during intermittent line-voltage sags. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16054CAUB+ | Quad-supply version (IN1–IN4 only); same 10-pin µMAX package, identical TOL/MR/RESET behavior | Lacks IN5/IN6 inputs; suitable only where ≤4 rails require supervision | Select MAX16054CAUB+ when system has four or fewer critical supplies and board space is constrained |
| TPS3808G33DBVR | Single-channel 3.3V supervisor with 200ms timeout; SOT-23-6 package; no adjustable inputs or TOL pin | Requires six separate devices to match hex functionality; no multi-rail coordination | Choose TPS3808G33DBVR only for simple single-rail backup or cost-sensitive non-automotive designs |
Compared with MAX16054CAUB+, the MAX16055CAUB+ adds two extra adjustable monitoring channels and retains identical timing, accuracy, and package compatibility-making it ideal for next-generation systems scaling beyond quad-rail supervision. Against TPS3808G33DBVR, it delivers integrated coordination across six rails with no layout or firmware overhead.
Availability
MAX16055CAUB+ is available at Aetrix Electronics and suitable for automotive ADAS modules, industrial PLC controllers, telecommunications base stations, and high-end printers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16055CAUB+ 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX16055CAUB+ belongs to Maxim's µP supervisory product line, engineered specifically for compact, high-reliability multi-rail power monitoring in space-constrained automotive and industrial systems.
FAQ
What is the function of the TOL pin on the MAX16055CAUB+?
The TOL pin on the MAX16055CAUB+ selects threshold tolerance: connecting TOL to GND sets factory-trimmed thresholds at -5% of nominal voltage (e.g., 1.71V for 1.8V rail), while connecting TOL to IN1 sets them at -10% (e.g., 1.62V). This allows design flexibility to match actual supply tolerances without changing external components. The MAX16055CAUB+ implements this across all six monitored inputs, including adjustable ones referenced to 0.5V.
Does the MAX16055CAUB+ require an external pullup resistor on the RESET pin?
No, the MAX16055CAUB+ includes a 70µA internal pullup to IN1 on the open-drain RESET output, eliminating the need for an external pullup in most 3.3V logic interfacing scenarios. However, if interfacing with a logic rail lower than IN1 (e.g., RESET pulled to 1.8V), an external pullup is required to prevent voltage rise above the target rail due to internal current flow. The MAX16055CAUB+ datasheet specifies design guidelines for such cases.
How does the MAX16055CAUB+ ensure RESET validity during low-voltage conditions?
The MAX16055CAUB+ guarantees RESET output validity as long as either IN1 ≥1V or IN2 ≥1V-enabling continued supervision even during partial system brownout. This dual-voltage validity window ensures the reset signal remains functional and noise-immune when primary rails dip but secondary monitoring rails remain above 1V. This behavior is explicitly characterized in the MAX16055CAUB+ Electrical Characteristics table and validated across -40°C to +125°C.
Can unused inputs on the MAX16055CAUB+ be left floating?
No, unused inputs on the MAX16055CAUB+ must not be left floating. Per Maxim's Applications Information, unused adjustable inputs (e.g., IN2, IN3, IN5, IN6 in certain configurations) should be tied to a supply voltage higher than their threshold (e.g., IN1) through a 100kΩ resistor to limit bias current. Fixed inputs like IN4 (1.8V) must be connected to their nominal voltage or a higher rail. Floating inputs risk erratic comparator behavior and false reset assertion in the MAX16055CAUB+.
What is the minimum reset timeout period specified for the MAX16055CAUB+?
The MAX16055CAUB+ guarantees a minimum reset timeout period of 140ms after all monitored supply voltages rise above their respective thresholds. This timeout is temperature-stable (190–210ms typical across -40°C to +125°C) and ensures sufficient hold time for complex processors to complete internal initialization. The MAX16055CAUB+ does not offer user-adjustable timeout; it is fixed by internal RC timing and fully characterized in production testing.
MAX16055CAUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 6
- Voltage - Threshold:
- 6 Selectable Threshold Combinations
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX16055CAUB+ FAQ
1.How can I place an order for MAX16055CAUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16055CAUB+ 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 MAX16055CAUB+ reliable?
The price and inventory of MAX16055CAUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16055CAUB+ is usually 5 days.
3.What payment methods are accepted for MAX16055CAUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16055CAUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16055CAUB+?
MAX16055CAUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16055CAUB+ 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 MAX16055CAUB+?
For technical support, including MAX16055CAUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16055CAUB+ requirements.
6.How does Aetrix verify that MAX16055CAUB+ is sourced from the original manufacturer or authorized distributors?
All MAX16055CAUB+ 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 MAX16055CAUB+ meets industry standards.
7.What is the process for return or replacement of MAX16055CAUB+?
All MAX16055CAUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16055CAUB+, 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 MAX16055CAUB+ part is unused and in its original packaging.
Return procedure for MAX16055CAUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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