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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Analog Devices Inc./Maxim Integrated MAX16055GAUB+

Name: MAX16055GAUB+
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX16055GAUB+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX16055GAUB+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

Package:: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Datasheet:: MAX16055GAUB+.pdf

Description:: IC SUPERVISOR 6 CHANNEL 10UMAX

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Product details

Overview

MAX16055GAUB+ from Maxim Integrated is a precision hex voltage microprocessor (µP) supervisory circuit that monitors up to six system supply voltages-including 3.3V, 2.5V, and adjustable inputs-and asserts a single active-low open-drain RESET when any falls below its preset threshold. It operates from IN1 (1.0V–5.5V), features factory-trimmed thresholds with ±5% or ±10% tolerance options, and delivers a fixed 140ms (min) reset timeout. Used in automotive-grade servers and industrial controllers for reliable power-on reset sequencing.

For engineers reviewing the MAX16055GAUB+ datasheet, MAX16055GAUB+ pinout, MAX16055GAUB+ application, or MAX16055GAUB+ equivalent, key selection considerations include its 10-pin µMAX package, dual-voltage validity (RESET valid if IN1 ≥1V or IN2 ≥1V), 70µA internal RESET pullup, and immunity to short supply transients-critical for robust embedded power monitoring.

Technical Context

The MAX16055GAUB+ integrates six independent voltage comparators with a shared precision bandgap reference and internal resistor-divider networks for factory-set thresholds (3.3V, 2.5V, etc.), plus adjustable inputs referenced to a 0.5V internal threshold. Its TOL pin selects between −5% and −10% nominal tolerance, and MR provides manual reset with 20kΩ internal pullup to IN1.

RESET assertion is synchronized across all monitored rails: it remains low for ≥140ms after the last input rises above its threshold + hysteresis (0.3% V_TH), and the output stays valid as long as IN1 or IN2 exceeds 1.0V-enabling operation during brown-out conditions where only one rail remains active.

Key Specifications

Parameter	Value and Actual Design Meaning
Operating Voltage Range	IN1 = 1.0V to 5.5V - powers device and serves as primary monitored rail; enables use in ultra-low-voltage systems down to 1V logic domains.
Reset Timeout Period	140ms (min) - ensures sufficient hold time for CPU initialization and peripheral stabilization before release.
Threshold Accuracy	±1.5% for adjustable inputs; ±0.5% typical for factory-set 3.3V/2.5V - guarantees precise undervoltage detection without external calibration.
RESET Output Type	Active-low open-drain with 70µA internal pullup to IN1 - eliminates need for external pullup in same-rail interfacing; supports mixed-voltage logic via external pullup.
Temperature Range	−40°C to +125°C - qualified for under-hood automotive, industrial control, and high-reliability server applications.
Input Hysteresis	0.3% of V_TH - suppresses false resets caused by noise or ripple on monitored supplies without degrading threshold accuracy.
Supply Transient Immunity	Immune to transients ≤100ns at ≥50mV overdrive - prevents spurious resets during switching noise or ESD events.

Pinout & Package

The MAX16055GAUB+ is housed in a 10-pin µMAX® package (3mm × 3mm, 0.5mm pitch), optimized for space-constrained PCB layouts in telecom and automotive modules.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN1)	Power supply input & monitored rail	Primary power source for IC; also monitored; must be ≥1V to keep RESET valid; requires 0.1µF bypass capacitor.
2 (IN2)	Monitored voltage input	Second monitored rail; RESET remains valid if IN2 ≥1V even if IN1 drops out; supports factory-set or adjustable threshold.
3–6 (IN3–IN6)	Monitored voltage inputs	Four additional supply rails; configured per Selector Guide (e.g., MAX16055G = IN3/IN4/IN5/IN6 all adjustable); unused inputs must be tied to >V_TH.
7 (TOL)	Tolerance select input	Logic-controlled selection of −5% (TOL = GND) or −10% (TOL = IN1) threshold deviation; must not float.
8 (MR)	Manual reset input	Active-low; internally pulled up to IN1 (20kΩ); asserts RESET immediately and holds for full timeout after release.
9 (RESET)	Reset output	Open-drain, active-low; weak 70µA internal pullup to IN1; sinks ≥2mA at 0.3V; compatible with 0–5.5V external pullup rails.
10 (GND)	Ground reference	Common return for all analog and digital functions; must be low-impedance connection to minimize noise coupling.

Key Features

Feature	Design Value
Precision factory-set thresholds	Supports 3.3V, 2.5V, 1.8V, 1.5V, 1.2V, 1.1V, 1.0V, and 0.9V rails with ±5%/±10% tolerance - eliminates external resistors and calibration for standard supply monitoring.
Adjustable threshold capability	Five configurable inputs (e.g., MAX16055G) with 0.5V internal reference and 1.5% accuracy - enables monitoring of custom or nonstandard voltages (e.g., 0.85V core rails) using simple resistor dividers.
Dual-rail RESET validity	RESET remains asserted and valid as long as IN1 ≥1V OR IN2 ≥1V - ensures reliable reset signaling during asymmetric power sequencing or partial brown-out.
Transient-immune comparator design	Internal 0.3% hysteresis and validated immunity to ≤100ns supply glitches - prevents false resets in noisy switch-mode power supply environments.
Ultra-small footprint	10-pin µMAX (3mm × 3mm) package - reduces board area by >40% vs. discrete solutions or larger supervisors, ideal for compact SSDs and network interface cards.

Applications

Automotive Engine Control Unit (ECU)	Industrial PLC I/O Module
Use Scenario: Monitors six critical rails (e.g., 5V sensor bias, 3.3V MCU core, 2.5V ADC, 1.8V FPGA I/O, 1.2V GPU core, 0.9V memory) in an under-hood ECU exposed to wide temperature swings and load dump transients. IC Role / Device Role / Timing Role: Centralized power-good supervisor ensuring coordinated reset assertion across heterogeneous subsystems before firmware execution begins. Use Value: Single-chip solution replaces six discrete supervisors, reducing BOM count, layout complexity, and failure points while meeting AEC-Q100 Grade 0 requirements.	Use Scenario: Embedded in a DIN-rail mounted programmable logic controller handling 24V field power, 5V logic, 3.3V communication interfaces, 2.5V analog front-end, 1.8V FPGA configuration, and 1.2V real-time processor core. IC Role / Device Role / Timing Role: Fault-tolerant voltage monitor providing fail-safe reset initiation and sustained reset hold during brown-out recovery sequences. Use Value: Dual-rail validity (IN1 ≥1V or IN2 ≥1V) maintains RESET integrity during 24V-to-5V converter dropout, preventing uncontrolled state transitions in safety-critical control loops.
Telecom Baseband Processor Board	Enterprise SSD Controller Module
Use Scenario: Deployed on a 5G baseband card with multiple ASICs requiring tightly sequenced power-up: 12V power delivery, 5V analog, 3.3V SerDes, 2.5V DDR PHY, 1.8V PCIe controller, and 1.0V RF synthesizer. IC Role / Device Role / Timing Role: Hex-supervisor enforcing strict voltage monotonicity and timing margins across cascaded DC-DC converters before releasing processor reset. Use Value: 140ms minimum timeout guarantees stable clock lock and PLL acquisition before host processor boot, eliminating boot failures due to premature reset release.	Use Scenario: Integrated into a U.2 NVMe SSD controller managing 12V auxiliary, 5V main, 3.3V NAND interface, 2.5V DRAM buffer, 1.8V PCIe PHY, and 1.2V controller core-all subject to rapid thermal cycling and sudden power loss. IC Role / Device Role / Timing Role: Power-fail detector triggering controlled flash write abort and metadata flush prior to complete rail collapse. Use Value: Adjustable thresholds enable precise 0.85V detection on 1.2V core rail to initiate graceful shutdown 100ms before catastrophic undervoltage, preserving data integrity.

Automotive Engine Control Unit (ECU)

Industrial PLC I/O Module

Use Scenario: Monitors six critical rails (e.g., 5V sensor bias, 3.3V MCU core, 2.5V ADC, 1.8V FPGA I/O, 1.2V GPU core, 0.9V memory) in an under-hood ECU exposed to wide temperature swings and load dump transients.

IC Role / Device Role / Timing Role: Centralized power-good supervisor ensuring coordinated reset assertion across heterogeneous subsystems before firmware execution begins.

Use Value: Single-chip solution replaces six discrete supervisors, reducing BOM count, layout complexity, and failure points while meeting AEC-Q100 Grade 0 requirements.

Use Scenario: Embedded in a DIN-rail mounted programmable logic controller handling 24V field power, 5V logic, 3.3V communication interfaces, 2.5V analog front-end, 1.8V FPGA configuration, and 1.2V real-time processor core.

IC Role / Device Role / Timing Role: Fault-tolerant voltage monitor providing fail-safe reset initiation and sustained reset hold during brown-out recovery sequences.

Use Value: Dual-rail validity (IN1 ≥1V or IN2 ≥1V) maintains RESET integrity during 24V-to-5V converter dropout, preventing uncontrolled state transitions in safety-critical control loops.

Telecom Baseband Processor Board

Enterprise SSD Controller Module

Use Scenario: Deployed on a 5G baseband card with multiple ASICs requiring tightly sequenced power-up: 12V power delivery, 5V analog, 3.3V SerDes, 2.5V DDR PHY, 1.8V PCIe controller, and 1.0V RF synthesizer.

IC Role / Device Role / Timing Role: Hex-supervisor enforcing strict voltage monotonicity and timing margins across cascaded DC-DC converters before releasing processor reset.

Use Value: 140ms minimum timeout guarantees stable clock lock and PLL acquisition before host processor boot, eliminating boot failures due to premature reset release.

Use Scenario: Integrated into a U.2 NVMe SSD controller managing 12V auxiliary, 5V main, 3.3V NAND interface, 2.5V DRAM buffer, 1.8V PCIe PHY, and 1.2V controller core-all subject to rapid thermal cycling and sudden power loss.

IC Role / Device Role / Timing Role: Power-fail detector triggering controlled flash write abort and metadata flush prior to complete rail collapse.

Use Value: Adjustable thresholds enable precise 0.85V detection on 1.2V core rail to initiate graceful shutdown 100ms before catastrophic undervoltage, preserving data integrity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor supervisory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX16054GAUB+	Quad-input version (IN1–IN4 only); identical 10-pin µMAX package, same 140ms timeout, and −40°C to +125°C rating.	Lacks IN5/IN6 monitoring capability; suitable only for systems with ≤4 critical rails.	Select when system has four or fewer supply rails to reduce cost and simplify design without sacrificing performance or footprint.
TPS3808G33DBVR	Single-channel supervisor with 3.3V fixed threshold; SOT-23-6 package; 200ms timeout; no adjustable inputs or TOL pin.	Requires six separate devices to match MAX16055GAUB+ functionality; higher component count and board area.	Choose only for simple single-rail monitoring where space and integration are secondary to lowest unit cost.

Compared with MAX16054GAUB+, the MAX16055GAUB+ adds two extra monitored inputs and retains full pin compatibility, enabling seamless upgrade paths in existing designs; versus TPS3808G33DBVR, it delivers six-rail supervision in one die, cutting BOM, layout effort, and validation time by >70%.

Availability

MAX16055GAUB+ is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, telecom baseband processor boards, and enterprise SSD controller modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16055GAUB+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.

The MAX16055GAUB+ belongs to Maxim's µP supervisory product line, engineered specifically for compact, multi-rail power monitoring in harsh-environment systems where reliability, precision, and minimal board space are critical design constraints.

FAQ

What is the operating voltage range for the MAX16055GAUB+?

The MAX16055GAUB+ operates from IN1 = 1.0V to 5.5V, which serves both as the device's power supply and as the primary monitored rail. This wide input range allows the MAX16055GAUB+ to function in ultra-low-voltage systems such as 1.2V or 1.0V core domains while maintaining full supervisory functionality and RESET validity as long as IN1 or IN2 remains ≥1V.

How does the TOL pin affect threshold settings on the MAX16055GAUB+?

The TOL pin on the MAX16055GAUB+ selects between two factory-trimmed tolerance options: connecting TOL to GND sets all thresholds to −5% of nominal (e.g., 3.15V for a 3.3V rail), while connecting TOL to IN1 sets them to −10% (e.g., 2.97V). The MAX16055GAUB+ variant uses this configuration to support precise undervoltage detection aligned with system-level margin requirements, and TOL must never be left floating.

Can the MAX16055GAUB+ monitor voltages lower than 1.0V?

Yes-the MAX16055GAUB+ supports monitoring down to 0.5V on its adjustable inputs (IN2–IN6, depending on variant). Using an external resistor divider referenced to the internal 0.5V threshold, users can configure detection for sub-1.0V rails like 0.85V FPGA cores or 0.75V AI accelerator supplies. The MAX16055GAUB+ achieves 1.5% accuracy on these adjustable thresholds across −40°C to +125°C.

What is the purpose of the internal 70µA pullup on the RESET pin of the MAX16055GAUB+?

The internal 70µA pullup on the MAX16055GAUB+ RESET pin eliminates the need for an external pullup resistor when interfacing with logic operating at the same voltage as IN1. This simplifies schematic design and reduces component count. When interfacing with different logic rails (e.g., 1.8V or 5V), an external pullup is required-and the MAX16055GAUB+ internal circuitry prevents reverse current flow from that external rail into the RESET driver.

Does the MAX16055GAUB+ require external components for basic operation?

For basic operation, the MAX16055GAUB+ requires only a 0.1µF bypass capacitor from IN1 to GND. No external resistors are needed for factory-set thresholds. Adjustable inputs require external resistor dividers, and MR may need a 0.1µF capacitor to ground for noise immunity in electrically noisy environments-but these are application-dependent, not mandatory for core functionality of the MAX16055GAUB+.

MAX16055GAUB+ 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

MAX16055GAUB+ FAQ

1.How can I place an order for MAX16055GAUB+ through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX16055GAUB+ 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 MAX16055GAUB+ reliable?

The price and inventory of MAX16055GAUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16055GAUB+ is usually 5 days.

3.What payment methods are accepted for MAX16055GAUB+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16055GAUB+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX16055GAUB+?

MAX16055GAUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX16055GAUB+ 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 MAX16055GAUB+?

For technical support, including MAX16055GAUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16055GAUB+ requirements.

6.How does Aetrix verify that MAX16055GAUB+ is sourced from the original manufacturer or authorized distributors?

All MAX16055GAUB+ 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 MAX16055GAUB+ meets industry standards.

7.What is the process for return or replacement of MAX16055GAUB+?

All MAX16055GAUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16055GAUB+, 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 MAX16055GAUB+ part is unused and in its original packaging.

Return procedure for MAX16055GAUB+:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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