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

Analog Devices Inc./Maxim Integrated MAX16046ECB+

Name: MAX16046ECB+
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX16046ECB+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX16046ECB+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

Package:: 64-TQFP Exposed Pad

Datasheet:: MAX16046ECB+.pdf

Description:: IC SUPERVISOR 12 CHANNEL 64TQFP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

The MAX16046ECB+ from Maxim Integrated is a 12-channel EEPROM-configurable system manager IC that monitors, sequences, tracks, and margins multiple power supplies in high-reliability server and telecom systems. It integrates a 1% accurate 10-bit ADC (80–100 µs full-cycle time), twelve 8-bit DAC outputs (±0.9 LSB INL), six programmable GPIOs, nonvolatile fault logging, and dual I²C/JTAG configuration - enabling precise power-up/down sequencing of up to twelve rails with closed-loop tracking on four channels.

For engineers reviewing the MAX16046ECB+ datasheet, MAX16046ECB+ pinout, MAX16046ECB+ application, or MAX16046ECB+ equivalent, this device supports critical design tasks including supply voltage margining via DAC-trimmed POL modules, fault-triggered EEPROM event capture, configurable power-good assertion with 0.5% hysteresis, and robust thermal management in its 56-pin 8mm × 8mm TQFN package rated for -40°C to +85°C operation.

Technical Context

The MAX16046ECB+ implements a hierarchical power management architecture: its 10-bit ADC continuously samples 12 monitored inputs with per-channel selectable voltage ranges (1.4V/2.8V/5.6V full-scale), comparing each against independently programmable upper, lower, and selectable limit thresholds. Fault detection triggers configurable outputs (up to three dedicated fault signals) and locks fault data into 100-byte user EEPROM with write-protection.

Its sequencer supports both absolute timing delays (±5% internal accuracy) and event-driven sequencing, while four EN_OUT pins support closed-loop tracking using external series MOSFETs and six others provide charge-pump outputs (VMONx + 5.1 V typical) for direct gate drive - all configured via EEPROM registers accessible over I²C (400 kHz SMBus-compatible) or JTAG interfaces.

Key Specifications

Parameter	Value and Actual Design Meaning
ADC Resolution	10-bit with ±0.95%FSR total unadjusted error - enables precise supply monitoring down to 1.36 mV LSB step size at 1.4V range.
DAC Outputs	12 × 8-bit outputs with ±0.9 LSB INL and 0.8 mV settling time - supports fine-grained voltage margining of POL converters.
Monitoring Channels	12 independent MON_ inputs with per-channel 3-range selection (1.4V/2.8V/5.6V) - accommodates diverse rail voltages from core to I/O supplies.
Sequencing Capability	Configurable power-up/down order across 12 outputs with slew-rate control (80–960 V/s) and event-triggered sequencing - ensures safe ramping of multi-rail systems.
Fault Management	Nonvolatile fault logger with lock-bit protection and three programmable fault outputs - preserves root-cause data across unexpected shutdowns.
Operating Voltage	3V to 14V supply range with 2.85V undervoltage lockout - supports wide-input industrial and telecom power architectures.
Interface Support	I²C (SMBus-compatible, 400 kHz) and IEEE 1149.1 JTAG - enables in-system configuration, debug, and firmware updates without dedicated programming hardware.

Pinout & Package

The MAX16046ECB+ is housed in a 56-pin, 8mm × 8mm, 0.8mm-thick TQFN package with exposed pad (EP) thermally connected to GND. Pin functions are EEPROM-configurable, supporting flexible system integration.

Pin/Terminal	Circuit Role	Design Meaning
MON1–MON12	ADC monitored voltage inputs	High-impedance analog inputs (65–140 kΩ) with programmable full-scale ranges - connect directly to DC-DC output feedback nodes or divider taps.
DACOUT1–DACOUT12	8-bit DAC voltage outputs	0.4–0.8V output range with ±0.6 LSB DNL - drive POL trim inputs for ±3% margining with <50 µs settling.
EN_OUT1–EN_OUT12	Configurable sequencing outputs	EN_OUT1–EN_OUT6 support charge-pump mode (VMONx + 5.1 V) for direct MOSFET gate drive; EN_OUT1–EN_OUT4 also enable closed-loop tracking.
GPIO1–GPIO6	Programmable general-purpose I/O	Configurable as WDI/WDO, manual reset (MR), margin up/down, or fault outputs - eliminates need for external logic in complex reset schemes.
SCL/SDA, TCK/TMS/TDI/TDO	Serial configuration interfaces	I²C and JTAG ports allow factory programming, field reconfiguration, and boundary-scan testing - supports production line flexibility and field upgrades.

Key Features

Feature	Design Value
12-channel voltage monitoring with triple threshold per channel	Enables simultaneous overvoltage, undervoltage, and selectable-limit detection on each rail - reduces external comparator count by 12×.
EEPROM-configurable sequencing and timing	Stores delay values, power-good thresholds, and event dependencies in nonvolatile memory - eliminates boot-time configuration overhead and supports field updates.
Closed-loop tracking on four channels	Compares tracked supply against reference using return-sense inputs (GPIO1–GPIO4) - achieves tight regulation during dynamic load transients without external op-amps.
Integrated 100-byte user EEPROM	Stores custom fault logs, calibration offsets, and system-specific settings - enables traceable failure analysis and OEM-specific customization.
Charge-pump enabled EN outputs	Delivers VMONx + 5.1 V gate drive from EN_OUT1–EN_OUT6 - drives high-side N-MOSFETs without external level shifters or bootstrap circuits.

Applications

Server Power Management	Telecom Line Card Sequencing
Use Scenario: Coordinating startup of CPU core, memory, I/O, and auxiliary rails in dual-socket x86 servers with strict voltage ramp requirements. IC Role / Device Role / Timing Role: Central system manager executing event- and timer-based sequencing, real-time voltage margining, and fault-locked shutdown logging. Use Value: Prevents latch-up and inrush damage by enforcing precise 12-rail power-up order and detecting sub-100 µs overvoltage excursions before system initialization completes.	Use Scenario: Managing power sequencing across FPGA, DSP, SerDes, and PHY supplies on carrier-grade optical line cards with hot-swap capability. IC Role / Device Role / Timing Role: Configurable sequencer with JTAG-accessible registers enabling in-field reprogramming of power-up delays and fault response policies. Use Value: Reduces board-level component count by integrating 12 ADC channels, 12 DACs, and 6 GPIOs - cuts BOM cost and layout area vs. discrete supervisor + DAC + sequencer solutions.
Enterprise Storage Controller	High-Density Workstation PSU
Use Scenario: Monitoring and margining 12V, 5V, 3.3V, 1.8V, 1.2V, and 0.85V rails in NVMe RAID controllers with PCIe switch and flash memory arrays. IC Role / Device Role / Timing Role: Fault logger capturing pre-shutdown voltage anomalies and EEPROM-stored margining offsets for temperature-compensated calibration. Use Value: Captures transient faults (e.g., capacitor aging-induced droop) in nonvolatile memory - accelerates root-cause analysis during field returns without requiring oscilloscope capture.	Use Scenario: Enabling adaptive voltage positioning (AVP) and dynamic margining for GPU and CPU VRMs in professional workstations with dual-GPU configurations. IC Role / Device Role / Timing Role: DAC-controlled margining source synchronized with sequencer events to validate supply stability under worst-case load steps. Use Value: Achieves ±0.5% voltage accuracy across temperature using DAC center-code calibration stored in EEPROM - replaces manual trim potentiometers and improves manufacturing yield.

Server Power Management

Telecom Line Card Sequencing

Use Scenario: Coordinating startup of CPU core, memory, I/O, and auxiliary rails in dual-socket x86 servers with strict voltage ramp requirements.

IC Role / Device Role / Timing Role: Central system manager executing event- and timer-based sequencing, real-time voltage margining, and fault-locked shutdown logging.

Use Value: Prevents latch-up and inrush damage by enforcing precise 12-rail power-up order and detecting sub-100 µs overvoltage excursions before system initialization completes.

Use Scenario: Managing power sequencing across FPGA, DSP, SerDes, and PHY supplies on carrier-grade optical line cards with hot-swap capability.

IC Role / Device Role / Timing Role: Configurable sequencer with JTAG-accessible registers enabling in-field reprogramming of power-up delays and fault response policies.

Use Value: Reduces board-level component count by integrating 12 ADC channels, 12 DACs, and 6 GPIOs - cuts BOM cost and layout area vs. discrete supervisor + DAC + sequencer solutions.

Enterprise Storage Controller

High-Density Workstation PSU

Use Scenario: Monitoring and margining 12V, 5V, 3.3V, 1.8V, 1.2V, and 0.85V rails in NVMe RAID controllers with PCIe switch and flash memory arrays.

IC Role / Device Role / Timing Role: Fault logger capturing pre-shutdown voltage anomalies and EEPROM-stored margining offsets for temperature-compensated calibration.

Use Value: Captures transient faults (e.g., capacitor aging-induced droop) in nonvolatile memory - accelerates root-cause analysis during field returns without requiring oscilloscope capture.

Use Scenario: Enabling adaptive voltage positioning (AVP) and dynamic margining for GPU and CPU VRMs in professional workstations with dual-GPU configurations.

IC Role / Device Role / Timing Role: DAC-controlled margining source synchronized with sequencer events to validate supply stability under worst-case load steps.

Use Value: Achieves ±0.5% voltage accuracy across temperature using DAC center-code calibration stored in EEPROM - replaces manual trim potentiometers and improves manufacturing yield.

Equivalent & Alternatives

The following parts are listed as comparable options for similar system management applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX16048EEG+	8-channel version with identical pinout, same 56-pin TQFN package, but fewer MON_/DAC/EN_OUT resources (8 vs. 12).	Targeted at simpler systems with ≤8 rails; lacks MON9–MON12, DACOUT9–DACOUT12, and EN_OUT9–EN_OUT12.	Select when system complexity and rail count permit resource reduction - saves cost without sacrificing interface compatibility or fault logging capability.
TPS40400RHLR	TI 8-channel PMBus-configurable sequencer with integrated 10-bit ADC, but no DAC outputs or EEPROM fault logging.	Relies on external microcontroller for margining and fault data retention; supports PMBus v1.2 instead of I²C/JTAG.	Choose for PMBus-ecosystem designs where host processor handles margining and fault reporting - not suitable for standalone, EEPROM-resident fault capture.

Compared with MAX16046ECB+, MAX16048EEG+ offers identical footprint and feature set at reduced channel count, while TPS40400RHLR trades local EEPROM intelligence for PMBus interoperability - making MAX16046ECB+ optimal for autonomous, high-channel-count, fault-critical applications.

Availability

The MAX16046ECB+ is available at Aetrix Electronics and suitable for servers, telecom line cards, and enterprise storage controllers requiring stable component supply, long-term lifecycle support, and guaranteed -40°C to +85°C performance.

Supply support for MAX16046ECB+ 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, communications, and computing applications.

The MAX16046ECB+ belongs to Maxim's system management product line, engineered specifically for high-density, multi-rail power sequencing and monitoring in mission-critical infrastructure equipment where reliability, configurability, and nonvolatile fault diagnostics are essential.

FAQ

What is the primary function of the MAX16046ECB+ in a power system?

The MAX16046ECB+ serves as a fully configurable system manager that monitors up to 12 voltage rails, sequences their power-up and power-down, tracks supply relationships via closed-loop feedback, and margins voltages using integrated DACs. Its nonvolatile EEPROM stores configuration, timing, thresholds, and fault logs - making MAX16046ECB+ ideal for autonomous, high-reliability power management in servers and telecom gear.

Does the MAX16046ECB+ support both I²C and JTAG interfaces?

Yes, the MAX16046ECB+ features dual serial interfaces: an SMBus-compatible I²C port (400 kHz max) and a full IEEE 1149.1 JTAG port. Both support read/write access to all configuration registers, ADC results, DAC settings, and fault log memory. This allows factory programming via JTAG and runtime adjustment via I²C - a key capability confirmed in the MAX16046ECB+ datasheet's interface section.

How many DAC outputs does the MAX16046ECB+ have, and what is their resolution?

The MAX16046ECB+ includes twelve 8-bit DAC outputs (DACOUT1–DACOUT12), each with ±0.9 LSB integral nonlinearity and 50 µs settling time. These DACs support three programmable output ranges (0.4V, 0.6V, 0.8V full-scale) and are designed to interface directly with the trim inputs of point-of-load DC-DC converters - a specification explicitly documented for MAX16046ECB+ in the Electrical Characteristics table.

What package type and thermal characteristics does the MAX16046ECB+ use?

The MAX16046ECB+ is supplied in a 56-pin, 8mm × 8mm TQFN package with exposed pad (θJA = 21°C/W). Its junction-to-case thermal resistance is 1°C/W, and it is rated for continuous operation from -40°C to +85°C. The exposed pad must be soldered to a PCB ground plane for optimal thermal dissipation - details confirmed in the MAX16046ECB+ Package Thermal Characteristics table.

Can the MAX16046ECB+ perform closed-loop tracking, and if so, on how many channels?

Yes, the MAX16046ECB+ supports closed-loop tracking on up to four channels (EN_OUT1–EN_OUT4), using GPIO1–GPIO4 as return-sense inputs. Tracking differential fault voltage is specified at 285–375 mV with 20% hysteresis, and ramp control is adjustable via EEPROM-programmable slew-rate registers - all parameters verified in the MAX16046ECB+ Electrical Characteristics section under "CLOSED-LOOP TRACKING".

MAX16046ECB+ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 64-TQFP Exposed Pad

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Type:: System Manager

Number of Voltages Monitored:: 12

Voltage - Threshold:: Adjustable/Selectable

Output:: Open Drain, Push-Pull

Reset:: Active Low

Reset Timeout:: Adjustable/Selectable

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 64-TQFP-EP (10x10)

MAX16046ECB+ FAQ

1.How can I place an order for MAX16046ECB+ through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX16046ECB+ 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 MAX16046ECB+ reliable?

The price and inventory of MAX16046ECB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16046ECB+ is usually 5 days.

3.What payment methods are accepted for MAX16046ECB+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16046ECB+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX16046ECB+?

MAX16046ECB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX16046ECB+ 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 MAX16046ECB+?

For technical support, including MAX16046ECB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16046ECB+ requirements.

6.How does Aetrix verify that MAX16046ECB+ is sourced from the original manufacturer or authorized distributors?

All MAX16046ECB+ 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 MAX16046ECB+ meets industry standards.

7.What is the process for return or replacement of MAX16046ECB+?

All MAX16046ECB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16046ECB+, 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 MAX16046ECB+ part is unused and in its original packaging.

Return procedure for MAX16046ECB+:

1.Submit a request within 90 days.

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

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