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Analog Devices Inc./Maxim Integrated MAX16055JAUB+
- Part No.:
- MAX16055JAUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX16055JAUB+.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,515
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Product details
Overview
The MAX16055JAUB+ from Maxim Integrated is a precision hex voltage microprocessor (µP) supervisory IC that monitors six system supply voltages-including dual 3.3V, 2.5V, 1.2V, 1.5V, and 1.2V rails-and asserts a single active-low open-drain RESET output when any falls below its factory-set threshold. It operates from IN1 (1.0V to 5.5V), features a fixed 140ms minimum reset timeout, -40°C to +125°C automotive temperature range, and 10-pin µMAX package. Used in servers and industrial controllers for reliable power-on reset sequencing.
For engineers reviewing the MAX16055JAUB+ datasheet, MAX16055JAUB+ pinout, MAX16055JAUB+ application, or MAX16055JAUB+ equivalent, key selection criteria include its dual 3.3V monitoring capability, adjustable tolerance (5%/10%) via TOL pin, 70µA internal RESET pullup, immunity to short supply transients, and guaranteed RESET validity with IN1 ≥1V or IN2 ≥1V.
Technical Context
The MAX16055JAUB+ implements six independent precision voltage comparators with an internal 0.5V reference and scalable resistor-divider networks to support factory-trimmed thresholds. Its architecture includes built-in 0.3% threshold hysteresis per input and glitch rejection circuitry that suppresses transients up to 100ns.
RESET assertion is synchronized across all monitored inputs: the output remains low for ≥140ms after the *last* input crosses its hysteresis-adjusted threshold on recovery. The MR input provides manual reset with 20kΩ internal pullup to IN1 and 1µs minimum pulse width requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | IN1 = 1.0V to 5.5V - powers device and serves as primary monitored rail |
| Reset Timeout Period | 140ms (min) - ensures stable processor initialization before release |
| Threshold Accuracy | ±1.5% for adjustable inputs; factory-trimmed ±1.2% typical for fixed rails - enables precise brownout detection |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
| RESET Output Type | Active-low open-drain with 70µA internal pullup to IN1 - eliminates need for external pullup in many 3.3V systems |
| Input Hysteresis | 0.3% of VTH - prevents chatter during slow-rising/falling supply edges |
| MR Input Pullup | 20kΩ to IN1 - supports momentary switch interface without external components |
Pinout & Package
Package: 10-pin µMAX (3mm × 3mm), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | Power supply & monitored rail | Primary power source; must be ≥1V for RESET validity; bypass with 0.1µF capacitor |
| 2 (IN2) | Monitored voltage input | Second 3.3V rail monitoring input; RESET remains valid if IN1 ≥1V OR IN2 ≥1V |
| 3 (IN3) | Monitored voltage input | 2.5V rail monitoring input; factory-trimmed threshold with ±5% or ±10% tolerance |
| 4 (IN4) | Monitored voltage input | 1.2V rail monitoring input; supports hysteresis-based noise immunity |
| 5 (IN5) | Monitored voltage input | 1.5V rail monitoring input; internally scaled against 0.5V reference |
| 6 (IN6) | Monitored voltage input | 1.2V rail monitoring input; identical threshold to IN4 for dual-rail redundancy |
| 7 (TOL) | Tolerance select control | GND = -5% threshold; IN1 = -10% threshold - configures undervoltage trip point |
| 8 (MR) | Manual reset input | Active-low; internally pulled up to IN1; 1µs min pulse width required for reliable assertion |
| 9 (RESET) | Reset output | Open-drain; weak 70µA internal pullup to IN1; sinks ≥2mA at VOL ≤0.3V |
| 10 (GND) | Ground reference | System ground return for all comparators and internal circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Dual 3.3V rail monitoring | IN1 and IN2 both configured for 3.3V thresholds - enables redundant power validation in high-availability systems |
| Factory-trimmed multi-rail thresholds | Supports simultaneous monitoring of 3.3V, 2.5V, 1.2V, 1.5V, and 1.2V rails without external resistors - reduces BOM count and layout area |
| Adjustable tolerance selection | TOL pin selects -5% or -10% threshold offset - allows design flexibility for varying supply tolerances across rail types |
| Transient-immune comparator design | Rejects supply glitches ≤100ns - prevents false resets during switching noise or ESD events |
| Single RESET output with deterministic timing | Guaranteed 140ms minimum timeout after last rail recovers - ensures consistent CPU boot timing regardless of individual rail ramp rates |
Applications
| Server Power Sequencing | Automotive ADAS Controller |
|---|---|
Use Scenario: Monitors 3.3V I/O, 2.5V memory, dual 1.2V core rails, and 1.5V analog supplies in x86 server motherboards during cold start and hot-swap events. IC Role / Device Role / Timing Role: Hex supervisor providing coordinated reset assertion across heterogeneous voltage domains with deterministic 140ms release delay. Use Value: Eliminates need for six discrete supervisors or complex FPGA-based monitoring logic, reducing board area by >40% and improving MTBF. | Use Scenario: Validates power integrity for radar processor, CAN transceiver, image sensor, and safety MCU in 24V automotive ADAS domain controller. IC Role / Device Role / Timing Role: Single-chip solution monitoring dual 3.3V supplies (CAN PHY + sensor interface), 2.5V ADC reference, and three sub-1.5V digital rails. Use Value: Meets AEC-Q100 Grade 0 requirements (-40°C to +125°C), supports fail-safe boot via guaranteed RESET validity down to IN1 = 1.0V. |
| Industrial PLC Backplane | High-End Networking Switch |
Use Scenario: Ensures clean power-up of FPGA, ARM SoC, DDR3 memory, and isolated I/O banks in modular programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Centralized supervision of six independently regulated DC/DC outputs feeding diverse subsystems. Use Value: Factory-trimmed thresholds eliminate calibration overhead; 0.3% hysteresis prevents nuisance resets during voltage ripple on 24V-to-3.3V conversion stages. | Use Scenario: Manages power sequencing for 100G Ethernet PHY, packet processor, SerDes, and management MCU in carrier-grade switches with strict thermal derating. IC Role / Device Role / Timing Role: Supervises dual 3.3V rails (PHY + management), 2.5V SerDes supply, 1.2V core, 1.5V I/O, and secondary 1.2V rail with shared RESET signaling. Use Value: Reduces component count vs. discrete solutions while maintaining <100ns glitch immunity critical for high-speed serial link stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16054JAUB+ | Quad-input version (IN1–IN4 only); no IN5/IN6 - smaller footprint but fewer monitored rails | Suitable for designs requiring ≤4 supply rails; lacks dual 3.3V monitoring capability of MAX16055JAUB+ | Select when system has only four critical rails and board space is constrained |
| TPS3808G33DBVR | Single 3.3V supervisor with 200ms timeout; no multi-rail or adjustable tolerance - simpler but less flexible | Applicable only for basic 3.3V-only systems; cannot monitor mixed-voltage domains or provide tolerance selection | Choose for cost-sensitive, single-rail applications where hex monitoring is unnecessary |
Compared with MAX16054JAUB+, the MAX16055JAUB+ adds two extra monitored inputs and dual 3.3V capability, enabling full power-domain coverage in complex SoC platforms; versus TPS3808G33DBVR, it delivers integrated multi-rail coordination instead of requiring multiple discrete supervisors - reducing PCB layers and improving timing predictability.
Availability
MAX16055JAUB+ is available at Aetrix Electronics and suitable for server power sequencing, automotive ADAS controllers, and industrial PLC backplanes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16055JAUB+ 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 and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX16055JAUB+ belongs to Maxim's µP supervisory product line, engineered specifically for compact, high-reliability monitoring of multi-rail systems in automotive and industrial environments where space, accuracy, and temperature resilience are critical.
FAQ
What voltage rails does the MAX16055JAUB+ monitor?
The MAX16055JAUB+ monitors six specific rails: IN1 and IN2 are both factory-configured for 3.3V, IN3 for 2.5V, IN4 and IN6 for 1.2V, and IN5 for 1.5V. This configuration is defined by the 'J' suffix in the MAX16055JAUB+ part number per Maxim's Selector Guide. Each input uses precision internal resistor dividers matched to a 0.5V reference, ensuring accurate undervoltage detection without external components.
Does the MAX16055JAUB+ require external pullup resistors on the RESET pin?
No, the MAX16055JAUB+ includes a 70µA internal pullup to IN1 on the open-drain RESET pin, eliminating the need for an external pullup in most 3.3V systems. However, if interfacing with logic powered by a different voltage (e.g., 1.8V or 5V), an external pullup resistor must be added - and its value selected carefully to avoid excessive voltage rise at RESET when deasserted due to current from the internal pullup.
How does the TOL pin affect threshold accuracy on the MAX16055JAUB+?
The TOL pin on the MAX16055JAUB+ selects between two factory-trimmed tolerance options: connecting TOL to GND sets all fixed thresholds to -5% of nominal (e.g., 3.15V for 3.3V), while connecting TOL to IN1 sets them to -10% (e.g., 2.97V for 3.3V). This allows designers to align trip points with actual supply tolerances - for example, matching a 3.3V ±5% rail with the -5% setting ensures reset occurs only when the rail breaches specification limits.
What is the minimum valid supply voltage to maintain RESET functionality on the MAX16055JAUB+?
The MAX16055JAUB+ guarantees RESET output validity as long as either IN1 ≥1.0V or IN2 ≥1.0V. Below this, the internal comparators and output driver may behave unpredictably. This dual-voltage validity window ensures robust operation during brownout conditions where one rail collapses while another remains marginally active - a key reliability feature for automotive and industrial systems with redundant power paths.
Can unused inputs on the MAX16055JAUB+ be left floating?
No, unused inputs on the MAX16055JAUB+ must not be left floating. Per Maxim's Applications Information, unused monitor inputs should be connected to a supply voltage higher than their specified threshold (e.g., tie IN5 to 3.3V if monitoring only five rails) or, for adjustable inputs, to IN1 via a 100kΩ resistor. Floating inputs risk erratic comparator behavior, false resets, or increased quiescent current - all compromising system reliability.
MAX16055JAUB+ 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:
- Obsolete
- 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
MAX16055JAUB+ FAQ
1.How can I place an order for MAX16055JAUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16055JAUB+ 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 MAX16055JAUB+ reliable?
The price and inventory of MAX16055JAUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16055JAUB+ is usually 5 days.
3.What payment methods are accepted for MAX16055JAUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16055JAUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16055JAUB+?
MAX16055JAUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16055JAUB+ 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 MAX16055JAUB+?
For technical support, including MAX16055JAUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16055JAUB+ requirements.
6.How does Aetrix verify that MAX16055JAUB+ is sourced from the original manufacturer or authorized distributors?
All MAX16055JAUB+ 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 MAX16055JAUB+ meets industry standards.
7.What is the process for return or replacement of MAX16055JAUB+?
All MAX16055JAUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16055JAUB+, 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 MAX16055JAUB+ part is unused and in its original packaging.
Return procedure for MAX16055JAUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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