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Analog Devices Inc./Maxim Integrated MAX16055HAUB+
- Part No.:
- MAX16055HAUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX16055HAUB+.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:742
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Product details
Overview
MAX16055HAUB+ from Maxim Integrated is a precision hex voltage microprocessor (µP) supervisory IC that monitors up to six system supply voltages-including one fixed 3.3V input (IN1) and five adjustable-threshold inputs-and asserts a single active-low open-drain RESET output when any falls below its preset threshold. It operates from -40°C to +125°C, features a fixed 140ms (min) reset timeout, 70µA internal RESET pullup to IN1, and supports tolerance selection (5%/10%) via the TOL pin. Used in automotive-grade embedded systems requiring reliable power-on reset and brownout detection.
For engineers reviewing the MAX16055HAUB+ datasheet, MAX16055HAUB+ pinout, MAX16055HAUB+ application, or MAX16055HAUB+ equivalent, key selection considerations include its 10-pin µMAX package, factory-trimmed and adjustable threshold architecture, IN1-powered operation with RESET validity down to 1V on IN1 or IN2, and immunity to short supply transients-critical for high-reliability multisupply systems.
Technical Context
The MAX16055HAUB+ integrates six independent voltage comparators with a shared precision bandgap reference and internal resistor-divider networks for fixed thresholds, plus configurable comparator inputs for adjustable monitoring down to 0.5V. Its reset logic combines asynchronous assertion (on any undervoltage event) with synchronous deassertion after a guaranteed 140ms timeout following full voltage recovery.
It uses BiCMOS process technology to achieve low quiescent current (≤70µA on IN1 at +25°C), built-in 0.3% threshold hysteresis per channel, and MR input with 20kΩ internal pullup to IN1. RESET remains valid as long as IN1 ≥1V or IN2 ≥1V, enabling robust operation during partial power-up sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 1.0V to 5.5V on IN1 - powers device and serves as primary monitored rail; RESET remains valid if IN1 or IN2 ≥1V. |
| Reset Timeout Period | 140ms (min), 200ms (typ), 280ms (max) - ensures stable processor initialization after all supplies recover. |
| Adjustable Threshold Accuracy | ±1.5% over temperature - enables precise monitoring of sub-1V rails (e.g., 0.9V, 0.5V) using external dividers. |
| RESET Output Type | Active-low open-drain with 70µA internal pullup to IN1 - eliminates need for external pullup in many 3.3V logic interfaces. |
| Threshold Tolerance Options | Selectable 5% (TOL = GND) or 10% (TOL = IN1) - accommodates varying supply tolerance requirements without redesign. |
| Input Transient Immunity | Immune to transients ≤100ns - prevents false resets during brief supply glitches common in automotive/industrial environments. |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive, industrial control, and high-reliability embedded applications. |
Pinout & Package
MAX16055HAUB+ is housed in a 10-pin µMAX® package (3mm × 3mm, 0.8mm height), RoHS-compliant and lead(Pb)-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | Primary power supply input & monitored rail | Supplies device power; must be ≥1V for RESET validity; requires 0.1µF bypass capacitor to GND. |
| 2 (IN2) | Adjustable threshold monitor input | Configurable down to 0.5V; RESET remains valid if IN2 ≥1V - enables dual-rail validity assurance. |
| 3–6 (IN3–IN6) | Additional adjustable threshold monitor inputs | Each accepts external resistor divider to set threshold; internally clamped at ~1.5V to limit bias current. |
| 7 (TOL) | Threshold tolerance select | Connect to GND for -5% thresholds or to IN1 for -10% - no floating allowed; determines hysteresis margin. |
| 8 (MR) | Active-low manual reset input | Internally pulled up to IN1 (20kΩ); asserts RESET low immediately and holds for full timeout after release. |
| 9 (RESET) | Active-low open-drain reset output | Drives low on any undervoltage; weak 70µA internal pullup to IN1 eliminates external resistor in same-rail systems. |
| 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 monitoring with mixed fixed/adjustable thresholds | Supports one 3.3V fixed rail (IN1) and five user-configurable inputs - reduces BOM count vs. discrete supervisors. |
| Factory-trimmed precision thresholds | Guaranteed ±1.5% accuracy across -40°C to +125°C for 0.9V–3.3V nominal rails - eliminates calibration overhead. |
| Single open-drain RESET with internal pullup | 70µA pullup to IN1 enables direct interface to 3.3V logic without external components - saves board space and cost. |
| 140ms minimum reset timeout | Ensures CPU and peripherals fully stabilize before release - meets JEDEC JESD84-B4.8 and automotive boot timing specs. |
| Manual reset with glitch rejection | 100ns noise immunity on MR pin and 1µs minimum pulse width - prevents spurious resets in noisy ECU environments. |
Applications
| Automotive Engine Control Units (ECUs) | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Monitoring multiple supply rails (e.g., 3.3V MCU core, 1.2V FPGA I/O, 0.9V GPU core) during cold cranking and load dump events. IC Role / Device Role / Timing Role: Hex supervisor asserting unified RESET signal to prevent firmware corruption during undervoltage conditions. Use Value: Single-chip solution replaces six discrete supervisors; 125°C rating and transient immunity ensure reliability in under-hood placement. |
Use Scenario: Validating 24V DC input, isolated 5V logic, 3.3V microcontroller, and three analog sensor rails in modular I/O expansion units. IC Role / Device Role / Timing Role: Centralized power-good arbiter coordinating startup sequencing and fault shutdown across distributed subsystems. Use Value: Adjustable thresholds enable precise monitoring of nonstandard rails (e.g., 2.7V, 1.85V); MR input supports field-service reset without power cycle. |
| Telecom Line Cards | Servers / High-Density Compute Blades |
Use Scenario: Supervising 48V-to-12V intermediate bus, 12V ASIC supply, 3.3V management controller, and three 1.8V SerDes rails in packet processing cards. IC Role / Device Role / Timing Role: Fault-detection hub generating synchronized RESET to avoid metastability during multi-rail power-up. Use Value: 10-pin µMAX footprint minimizes PCB area; 140ms timeout aligns with IEEE 802.3af PoE startup timing constraints. |
Use Scenario: Monitoring CPU VDDIO (1.2V), memory VDDQ (1.35V), BMC 3.3V, PCIe 12V, and two auxiliary 5V rails in 1U server motherboards. IC Role / Device Role / Timing Role: Consolidated reset generator ensuring coordinated boot across CPU, memory, and baseboard management controller. Use Value: Dual-rail validity (IN1 ≥1V or IN2 ≥1V) guarantees RESET integrity even during partial power loss scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6369KAUB+ | Quad supervisor (not hex); fixed thresholds only; no adjustable inputs; 200ms timeout; same µMAX package. | Lacks support for sub-1V rails and flexible threshold configuration - suitable only for simpler 4-rail systems. | Choose when monitoring ≤4 fixed-voltage rails and no adjustable thresholds are needed; lower cost but less flexible. |
| TPS3808G33DBVR | Single-channel supervisor; 3.3V fixed threshold; 200ms timeout; SOT-23-6 package; no MR or TOL pins. | No multi-rail capability; no manual reset or tolerance selection - requires six separate devices for hex monitoring. | Use only for single-rail backup; not a functional alternative for MAX16055HAUB+'s integrated hex supervision role. |
Compared with MAX6369KAUB+ and TPS3808G33DBVR, the MAX16055HAUB+ uniquely delivers six-channel supervision with mixed fixed/adjustable thresholds in a single 10-pin µMAX package, enabling compact, high-accuracy power sequencing in automotive and industrial systems where rail count and flexibility are critical.
Availability
MAX16055HAUB+ is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, telecom line cards, servers/workstations, and high-end networking equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX16055HAUB+ 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 MAX16055HAUB+ belongs to Maxim's µP supervisory product line, engineered specifically for high-reliability multisupply systems requiring accurate, low-power, and compact voltage monitoring with automotive-grade temperature performance.
FAQ
What is the function of the TOL pin on the MAX16055HAUB+?
The TOL pin on the MAX16055HAUB+ selects the threshold tolerance for all monitored inputs: connecting TOL to GND sets thresholds at -5% of nominal voltage, while connecting it to IN1 sets them at -10%. This allows design flexibility to match system supply tolerances without changing the MAX16055HAUB+ part number. Leaving TOL unconnected is not permitted, as it may cause undefined threshold behavior. The MAX16055HAUB+ datasheet specifies exact voltage ranges for each configuration.
Can the MAX16055HAUB+ monitor voltages below 1.0V?
Yes, the MAX16055HAUB+ can monitor voltages as low as 0.5V using its adjustable threshold inputs (IN2–IN6). Each adjustable input has a typical internal threshold of 0.5V, and an external resistor divider scales higher voltages down to this reference. The MAX16055HAUB+ guarantees ±1.5% accuracy over temperature for these configurations, making it suitable for modern low-voltage SoCs and FPGAs. IN1 remains fixed at 3.3V per the H variant.
How does the RESET output behave during power-up of the MAX16055HAUB+?
During power-up, the MAX16055HAUB+ asserts RESET low immediately and holds it until all monitored inputs rise above their respective thresholds and remain stable for the full reset timeout period (140ms minimum). RESET remains valid as long as IN1 ≥1V or IN2 ≥1V, ensuring reliable assertion even if other rails are still ramping. This behavior is intrinsic to the MAX16055HAUB+ architecture and requires no external timing components.
Is an external pullup resistor required for the RESET output of the MAX16055HAUB+?
No external pullup resistor is required when interfacing the MAX16055HAUB+ RESET output to logic operating at the same voltage as IN1 (e.g., 3.3V), because the device includes a 70µA internal pullup to IN1. However, if RESET must drive a different logic rail (e.g., 1.8V or 5V), an external pullup is necessary - and its value must be selected to prevent excessive voltage rise due to the internal pullup current. This design detail is explicitly documented for the MAX16055HAUB+ in its Applications Information section.
What is the maximum number of supply rails the MAX16055HAUB+ can supervise simultaneously?
The MAX16055HAUB+ supervises up to six supply rails simultaneously: IN1 is fixed at 3.3V (per the 'H' variant designation), and IN2 through IN6 are all configured as adjustable-threshold inputs. This hex-monitoring capability is implemented in a single 10-pin µMAX package, eliminating the need for multiple discrete supervisors. The MAX16055HAUB+ asserts a single RESET signal if any of the six inputs violates its threshold, simplifying system-level fault response.
MAX16055HAUB+ 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
MAX16055HAUB+ FAQ
1.How can I place an order for MAX16055HAUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16055HAUB+ 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 MAX16055HAUB+ reliable?
The price and inventory of MAX16055HAUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16055HAUB+ is usually 5 days.
3.What payment methods are accepted for MAX16055HAUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16055HAUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16055HAUB+?
MAX16055HAUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16055HAUB+ 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 MAX16055HAUB+?
For technical support, including MAX16055HAUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16055HAUB+ requirements.
6.How does Aetrix verify that MAX16055HAUB+ is sourced from the original manufacturer or authorized distributors?
All MAX16055HAUB+ 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 MAX16055HAUB+ meets industry standards.
7.What is the process for return or replacement of MAX16055HAUB+?
All MAX16055HAUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16055HAUB+, 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 MAX16055HAUB+ part is unused and in its original packaging.
Return procedure for MAX16055HAUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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