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Analog Devices Inc./Maxim Integrated MAX16048ATN+
- Part No.:
- MAX16048ATN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 56-WFQFN Exposed Pad
- Datasheet:
-
MAX16048ATN+.pdf
- Description:
- IC SUPERVISOR 8 CHANNEL 56TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,756
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Product details
Overview
The MAX16048ATN+ from Maxim Integrated is an 8-channel EEPROM-configurable system manager IC that monitors, sequences, tracks, and margins power supplies in complex digital systems. It integrates a 1% accurate 10-bit ADC (for 8 monitored inputs), eight 8-bit DACs for supply margining, six GPIOs, and configurable sequencing outputs - all operating from 3V to 14V supply and fully specified from –40°C to +85°C. It is used in server power management to coordinate multi-rail startup/shutdown while logging fault events nonvolatily.
For engineers reviewing the MAX16048ATN+ datasheet, MAX16048ATN+ pinout, MAX16048ATN+ application, or MAX16048ATN+ equivalent, this page delivers verified technical context, real-world use cases, pin-level design meaning, and validated alternative options - all grounded in the official Maxim Integrated datasheet Rev 9 (Jan 2020) and TQFN-56 package documentation.
Technical Context
The MAX16048ATN+ implements a dual-interface (I²C/SMBus + JTAG) configuration architecture with nonvolatile EEPROM storage for voltage thresholds, timing delays, DAC settings, and fault logs. Its analog monitoring core uses per-channel programmable input ranges (1.4V/2.8V/5.6V full-scale) and supports overvoltage, undervoltage, and selectable limit detection per MON_ input.
Sequencing logic supports both open-loop power-good assertion and closed-loop tracking across up to four channels using external MOSFETs; EN_OUT1–EN_OUT6 feature integrated charge-pump drivers capable of sourcing VMON_ + 5V, while EN_OUT7–EN_OUT8 operate as standard logic outputs. All six GPIOs are EEPROM-configurable as fault outputs, watchdog I/O, manual reset, or margin control inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Monitored Inputs | 8 independent voltage inputs (MON1–MON8), each with programmable 1.4V/2.8V/5.6V ADC range |
| ADC Accuracy | ±0.65% FSR total unadjusted error (typ), enabling precise supply tolerance validation |
| DAC Outputs | 8 × 8-bit DACs (DACOUT1–DACOUT8), ±0.9 LSB INL, 0.4V–0.8V output range, for POL module margining |
| Sequencing Outputs | 8 configurable EN_OUT signals: EN_OUT1–EN_OUT6 support charge-pump drive (VMON_ + 5V); EN_OUT7–EN_OUT8 are logic-level |
| GPIO Count | 6 general-purpose I/Os (GPIO1–GPIO6), EEPROM-configurable as WDI/WDO, MR, fault outputs, or tracking sense lines |
| Operating Temp | –40°C to +85°C ambient, with internal timing accuracy ±5% across temperature for reliable sequencing timing |
| Supply Range | VCC = 3V to 14V, supporting direct connection to intermediate bus rails without LDO pre-regulation |
Pinout & Package
The MAX16048ATN+ is packaged in a 56-pin 8mm × 8mm TQFN with exposed pad (EP), rated for θJA = 21°C/W. Pin functions are defined per Maxim's datasheet Rev 9, with MON1–MON8, DACOUT1–DACOUT8, EN_OUT1–EN_OUT8, GPIO1–GPIO6, SCL/SDA, TCK/TMS/TDI/TDO, RESET, A0, VCC, DBP, ABP, and GND assigned to specific physical pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MON1–MON8 | ADC voltage monitor inputs | High-impedance (65–140kΩ) analog inputs for rail sensing; each configurable for 1.4V/2.8V/5.6V full-scale range |
| DACOUT1–DACOUT8 | 8-bit DAC outputs | Low-drift buffered outputs (±0.9 LSB INL) for trimming DC-DC converter feedback nodes during margin testing |
| EN_OUT1–EN_OUT6 | Charge-pump enabled sequencing outputs | Drive external high-side MOSFET gates at VMON_ + 5V (min), eliminating need for external level-shifters in tracking circuits |
| EN_OUT7–EN_OUT8 | Logic-level sequencing outputs | Push-pull or open-drain configurable outputs for enabling POL modules or asserting power-good signals |
| GPIO1–GPIO6 | Configurable general-purpose I/O | EEPROM-defined roles: WDI/WDO, MR, MARGINUP/MARGINDN, or closed-loop tracking return sense |
| SCL/SDA | I²C/SMBus interface | 400kHz-compatible bidirectional bus (VIL = 0.8V, VIH = 2.0V) with timeout protection for robust configuration |
| TCK/TMS/TDI/TDO | JTAG test interface | IEEE 1149.1-compliant boundary-scan and in-system programming interface, independent of I²C |
| RESET | Configurable reset output | Open-drain or push-pull output with programmable delay and polarity; asserts on detected faults or manual trigger |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile fault logger | Stores timestamped fault data (e.g., overvoltage event on MON3) in internal EEPROM with lock-bit protection against accidental overwrite |
| Closed-loop tracking | Four dedicated channels (EN_OUT1–EN_OUT4) support precision rail tracking with <150mV differential stop ramp and 20% hysteresis |
| EEPROM-configurable timing | All sequencing delays, power-up/power-down slew rates (80–960 V/s), and fault response timeouts stored in nonvolatile memory |
| Dual serial interfaces | I²C/SMBus (with timeout) and JTAG enable field reconfiguration and debug access without requiring firmware changes |
| 100-byte user EEPROM | Available for customer-specific calibration data, board ID, or custom fault-handling logic beyond factory defaults |
Applications
| Server Power Management | Storage System Sequencing |
|---|---|
|
Use Scenario: Coordinating startup of CPU, memory, and I/O rails in 2U rack servers with strict voltage sequencing requirements. IC Role / Device Role / Timing Role: System manager performing real-time voltage monitoring, inter-rail delay enforcement, and fault-triggered shutdown via RESET assertion. Use Value: Prevents latch-up and inrush damage by enforcing 10ms–500ms programmable delays between rail enables, verified by on-chip ADC sampling at 100µs/cycle. |
Use Scenario: Managing power sequencing for SAS/SATA backplanes with mixed 12V, 5V, and 3.3V supplies and hot-swap capability. IC Role / Device Role / Timing Role: Sequencer with closed-loop tracking on 12V-to-5V conversion stage, using EN_OUT1–EN_OUT4 to drive external MOSFETs. Use Value: Achieves <±1% tracking accuracy between primary and secondary rails during dynamic load transients, reducing output capacitor count by 30%. |
| Network Switch Power Control | Workstation GPU Rail Coordination |
|
Use Scenario: Enabling 48V PoE midspan supplies, isolated DC-DC converters, and FPGA core/logic rails in telecom switches. IC Role / Device Role / Timing Role: Fault manager logging overvoltage events on PoE input and triggering graceful shutdown via GPIO-controlled isolators. Use Value: Nonvolatile fault log retains failure cause (e.g., MON2 > 55V) across power cycles, accelerating root-cause analysis without external microcontroller logging. |
Use Scenario: Margining GPU core (0.8–1.2V) and memory (1.35V) rails during production test and thermal validation. IC Role / Device Role / Timing Role: Precision DAC controller using DACOUT1–DACOUT4 to inject ±3% voltage offsets into DC-DC feedback loops. Use Value: Enables automated margin testing at 1.56mV DAC resolution (0.4V range), meeting JEDEC JESD22-A108 reliability stress requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar system management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16046ATN+ | 12-channel version with identical pinout, same 56-pin TQFN package, but supports MON9–MON12 and DACOUT9–DACOUT12 | Required when >8 monitored rails or >8 DAC outputs are needed; otherwise functionally redundant for 8-rail designs | Select MAX16046ATN+ only if future expansion to 12 rails is planned; MAX16048ATN+ offers lower cost and identical footprint for 8-rail systems |
| TPS40400RHLR | 6-channel PMBus-based sequencer with 12-bit ADC, no integrated DACs or EEPROM fault logger; 32-pin QFN package | Lacks nonvolatile fault storage and supply margining capability; relies on external MCU for configuration persistence | Choose TPS40400RHLR for cost-sensitive, MCU-managed systems where fault logging and DAC margining are handled externally |
Compared with MAX16046ATN+, the MAX16048ATN+ reduces channel count and BOM cost while retaining identical sequencing fidelity and EEPROM configurability; versus TPS40400RHLR, it delivers autonomous fault logging and integrated margining without MCU dependency - critical for headless server BMC environments.
Availability
The MAX16048ATN+ is available at Aetrix Electronics and suitable for servers, storage systems, and networking equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX16048ATN+ 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 high-performance analog and mixed-signal ICs for power, sensing, and connectivity applications.
The MAX16048ATN+ belongs to Maxim's system management product line, engineered specifically for autonomous, EEPROM-configurable power sequencing and fault monitoring in dense, multi-rail computing platforms.
FAQ
What is the maximum number of voltage rails the MAX16048ATN+ can monitor and sequence?
The MAX16048ATN+ monitors and sequences up to eight voltage rails. It features eight dedicated MON inputs (MON1–MON8), eight DAC outputs (DACOUT1–DACOUT8) for margining, and eight EN_OUT signals (EN_OUT1–EN_OUT8) for sequencing control - matching its designation as an 8-channel system manager per the official Maxim datasheet Rev 9.
Does the MAX16048ATN+ support closed-loop tracking, and if so, how many channels?
Yes, the MAX16048ATN+ supports closed-loop tracking on up to four channels: EN_OUT1 through EN_OUT4. Each can be configured to drive external series MOSFETs with precise differential voltage control (150mV stop ramp, 20% hysteresis), enabling tight regulation between master and slave rails during dynamic load steps.
What serial interfaces does the MAX16048ATN+ support for configuration and monitoring?
The MAX16048ATN+ supports two independent serial interfaces: a 400kHz I²C/SMBus interface (SCL/SDA) with timeout protection, and a full IEEE 1149.1 JTAG interface (TCK/TMS/TDI/TDO). Both allow read/write access to configuration registers, ADC results, DAC settings, and fault logs without requiring device reset.
How does the nonvolatile fault logger in the MAX16048ATN+ work?
The MAX16048ATN+ fault logger stores fault type, timestamp, and affected rail (e.g., "MON4 undervoltage at t=2.3s") in internal EEPROM upon event detection. A hardware lock bit prevents accidental erasure until explicitly cleared via I²C/JTAG command - ensuring forensic data retention across power cycles and system resets.
What is the operating voltage range for the VCC supply of the MAX16048ATN+?
The MAX16048ATN+ operates from a single VCC supply ranging from 3V to 14V, allowing direct connection to common intermediate bus voltages (e.g., 5V, 12V) without external regulators. Its undervoltage lockout (UVLO) activates below 2.85V, ensuring reliable EEPROM configuration only when supply is stable.
MAX16048ATN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 56-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- System Manager
- Number of Voltages Monitored:
- 8
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain, Push-Pull
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TQFN (8x8)
MAX16048ATN+ FAQ
1.How can I place an order for MAX16048ATN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16048ATN+ 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 MAX16048ATN+ reliable?
The price and inventory of MAX16048ATN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16048ATN+ is usually 5 days.
3.What payment methods are accepted for MAX16048ATN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16048ATN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16048ATN+?
MAX16048ATN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16048ATN+ 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 MAX16048ATN+?
For technical support, including MAX16048ATN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16048ATN+ requirements.
6.How does Aetrix verify that MAX16048ATN+ is sourced from the original manufacturer or authorized distributors?
All MAX16048ATN+ 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 MAX16048ATN+ meets industry standards.
7.What is the process for return or replacement of MAX16048ATN+?
All MAX16048ATN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16048ATN+, 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 MAX16048ATN+ part is unused and in its original packaging.
Return procedure for MAX16048ATN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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