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Analog Devices Inc./Maxim Integrated MAX8972CEWI+T
- Part No.:
- MAX8972CEWI+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX8972CEWI+T.pdf
- Description:
- IC REG BUCK PROG 0.61V 6A
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX8972CEWI+T from Maxim Integrated is a high-efficiency, two-phase, DC-DC stepdown switching regulator delivering up to 6A output current with 2.25MHz fixed switching frequency per phase, 0.60625V–1.4V I²C-programmable output voltage (6.25mV steps), and -40°C to +85°C operating range. It targets point-of-load power delivery for mobile application processors.
For engineers reviewing the MAX8972CEWI+T datasheet, MAX8972CEWI+T pinout, MAX8972CEWI+T application, or MAX8972CEWI+T equivalent, key selection considerations include dual-phase ripple cancellation, Rotational Phase Spreading for light-load efficiency, forced-PWM/skip-mode control, differential remote sensing accuracy (<0.8% total error at 1.2V), and 28-bump WLP package thermal performance (θJA = 41°C/W).
Technical Context
The MAX8972CEWI+T implements a dual-inductor, two-phase synchronous buck architecture with independent high-side/low-side MOSFET drivers per phase. Its proprietary Rotational Phase Spreading dynamically shifts phase timing to minimize input/output ripple and improve light-load efficiency without external compensation.
I²C 3.0-compatible interface (up to 3.4MHz) enables real-time voltage scaling (DVS), slew rate control, and on/off sequencing. Fully differential remote sense inputs (VOSNSP/VOSNSN) provide precise load-point regulation independent of PCB trace resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A total (3A per phase); supports high-current SoC core rails without thermal derating in compact layouts. |
| Input Voltage Range | 2.6V to 4.5V; compatible with single-cell Li-ion/Li-poly battery systems and intermediate bus architectures. |
| Switching Frequency | 2.25MHz per phase; enables use of 0.47µH inductors and 22µF ceramic output capacitors for minimal footprint. |
| Output Voltage Range | 0.60625V–1.4V in 6.25mV steps; supports dynamic voltage scaling for ARM Cortex-A series processors. |
| Output Accuracy | <0.8% total error over line, load, and temperature at 1.2V; ensures stable operation of voltage-sensitive digital cores. |
| Ripple Performance | <1% VOUT at light load (Idle), <0.5% at medium/high load; meets stringent noise requirements for RF and analog subsystems. |
| Thermal Resistance | θJA = 41°C/W (multi-layer board); enables 6A operation with no external heatsink in standard PCB stackups. |
Pinout & Package
Package: 28-bump Wafer-Level Package (WLP), 4mm × 7mm footprint, 0.4mm pitch, JEDEC Moisture Sensitivity Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Primary DC input (2.6V–4.5V); connects to battery or intermediate rail with local 10µF ceramic decoupling. |
| VOUT1 / VOUT2 | Phase Output Nodes | Two independent switch-node outputs; each drives one external inductor in dual-phase configuration. |
| VOSNSP / VOSNSN | Differential Remote Sense | High-precision feedback path directly at load; cancels IR drop in power delivery network. |
| EN | Enable Input | Active-high logic control; asserts internal soft-start and disables both phases when low. |
| DVS | Dynamic Voltage Select | Hardware-selectable second output voltage level; bypasses I²C for fast voltage transitions during DVFS. |
| SCL / SDA | I²C Interface | 3.4MHz-capable serial bus; configures output voltage, slew rate, and operating mode (forced-PWM/skip). |
| PGOOD | Power-Good Indicator | Open-drain output signaling valid regulation; used for system power sequencing and fault detection. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase ripple cancellation | Reduces output capacitor RMS current by ~30%, enabling smaller, lower-ESR ceramics and extending capacitor lifetime. |
| Rotational Phase Spreading | Automatically adjusts phase offset to minimize input ripple harmonics and improve light-load efficiency without firmware intervention. |
| Factory-programmable default voltage | Eliminates need for I²C initialization at boot; supports multiple SoC variants from single BOM item. |
| Guaranteed monotonic voltage adjustment | Prevents voltage undershoot/overshoot during DVS transitions; critical for avoiding processor lockup during frequency scaling. |
| Over-temperature shutdown with hysteresis | Thermal protection triggers at +150°C and re-enables at +135°C; prevents permanent damage during sustained overload or airflow loss. |
Applications
| Mobile Application Processors | Tablet SoC Core Rails |
|---|---|
Use Scenario: Powering ARM Cortex-A7/A15/A57 CPU clusters in smartphones with dynamic voltage and frequency scaling (DVFS). IC Role / Device Role / Timing Role: Dual-phase step-down regulator providing tightly regulated core voltage with sub-1% ripple under transient load steps. Use Value: Enables aggressive DVFS for battery life extension while maintaining <0.8% output error across -40°C to +85°C ambient. | Use Scenario: Delivering 4–6A core power to quad-core tablet processors during GPU-intensive rendering or video decode. IC Role / Device Role / Timing Role: High-current, low-noise POL regulator with differential remote sensing to compensate for PCB voltage drop. Use Value: Maintains stable 1.0V–1.2V core rail under 3A/µs load transients, preventing timing violations in high-speed memory interfaces. |
| Ultra-Thin Laptop CPU VRMs | Industrial Edge AI Accelerators |
Use Scenario: Replacing discrete multi-phase controllers in fanless ultrabooks where thermal headroom is constrained. IC Role / Device Role / Timing Role: Integrated two-phase buck controller with integrated drivers and thermal monitoring. Use Value: Achieves 92% peak efficiency at 4A with θJA = 41°C/W, eliminating need for heat pipes in 8mm-thin chassis designs. | Use Scenario: Powering FPGA-based AI inference engines in sealed industrial gateways requiring extended temperature operation. IC Role / Device Role / Timing Role: Robust, high-reliability POL regulator qualified to -40°C to +85°C with built-in OCP and OTP protection. Use Value: Delivers 6A continuous current with <50ppm outgoing defect rate and FIT rate of 11.5 @25°C per reliability report. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-phase step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS659122YFFR | Single-chip PMIC with integrated LDOs and fuel gauge; 4A max per buck channel; 2.5MHz switching frequency. | Targets full-system power management (not just core rail); requires different I²C register map and sequencing flow. | Choose when system-level integration (battery gauge, RTC, LDOs) outweighs pure core-rail efficiency and ripple performance. |
| RTQ2132B-QA | Automotive-grade (AEC-Q100 Grade 2); 6A dual-phase; 2.2MHz; supports 2.7V–5.5V input; no DVS pin. | Designed for automotive infotainment SoCs; lacks hardware DVS pin and factory-default voltage programming. | Choose for automotive environments requiring AEC-Q100 qualification and wider input range, accepting software-only voltage control. |
Compared with TPS659122YFFR and RTQ2132B-QA, the MAX8972CEWI+T offers superior light-load efficiency via Rotational Phase Spreading, hardware DVS for sub-microsecond voltage transitions, and tighter output accuracy (<0.8%)-critical for mobile SoC core rails where power integrity directly impacts performance and battery life.
Availability
MAX8972CEWI+T is available at Aetrix Electronics and suitable for mobile application processors, tablet SoC core rails, ultra-thin laptop CPU VRMs, and industrial edge AI accelerators requiring stable component supply, high-reliability qualification, and compact power delivery.
Supply support for MAX8972CEWI+T 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, communications, and consumer applications.
The MAX8972 family targets high-efficiency, space-constrained point-of-load regulation for advanced mobile processors, emphasizing dual-phase ripple cancellation, I²C-configurable DVS, and robust thermal performance in WLP packaging.
FAQ
What is the maximum supported I²C clock frequency for the MAX8972CEWI+T?
The MAX8972CEWI+T supports I²C 3.0-compatible operation up to 3.4MHz. This high-speed interface enables rapid voltage scaling during DVFS events and reduces configuration time during system boot. The MAX8972CEWI+T maintains signal integrity at this rate through internal slew-rate control on SCL/SDA pins and compatibility with standard I²C pull-up configurations.
Does the MAX8972CEWI+T require external compensation components?
No, the MAX8972CEWI+T uses an internally compensated control loop optimized for its dual-phase architecture and recommended 0.47µH inductors. External compensation is not required or supported. The MAX8972CEWI+T achieves stable operation across the full 0.60625V–1.4V output range and 1mA–6A load range without user-adjustable compensation networks.
How does the DVS pin function on the MAX8972CEWI+T?
The DVS pin on the MAX8972CEWI+T provides hardware-selectable dual output voltages without I²C interaction. When pulled high or low, it selects between two preprogrammed voltage levels (e.g., 1.1V and 0.95V), enabling microsecond-scale transitions during processor DVFS. The MAX8972CEWI+T retains its factory-default voltage setting for the primary level and supports custom DVS mapping via post-package programming.
What thermal performance can be expected from the MAX8972CEWI+T in a standard 4-layer PCB?
In a standard 4-layer PCB with 1oz copper and thermal vias under the WLP pad, the MAX8972CEWI+T achieves θJA = 41°C/W. At 6A output and 3.6V input, this translates to ~35°C junction-to-ambient rise above ambient, well within the -40°C to +85°C operating range. The MAX8972CEWI+T includes thermal shutdown at +150°C with 15°C hysteresis for safety margin.
Is the MAX8972CEWI+T pin-compatible with MAX8972AEWI+T or MAX8972BEWI+T?
Yes, the MAX8972CEWI+T shares identical pinout, package (28-bump WLP), and electrical interface with MAX8972AEWI+T and MAX8972BEWI+T. Differences are limited to factory-programmed default output voltage and internal trimming; all three variants use the same die revision, bondwire layout, and thermal design. The MAX8972CEWI+T may be substituted without PCB changes where the default voltage aligns with system requirements.
MAX8972CEWI+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.6V
- Voltage - Input (Max):
- 4.5V
- Voltage - Output (Min/Fixed):
- 0.61V
- Voltage - Output (Max):
- 1.4V
- Current - Output:
- 6A
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX8972CEWI+T FAQ
1.How can I place an order for MAX8972CEWI+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8972CEWI+T 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 MAX8972CEWI+T reliable?
The price and inventory of MAX8972CEWI+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8972CEWI+T is usually 5 days.
3.What payment methods are accepted for MAX8972CEWI+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8972CEWI+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8972CEWI+T?
MAX8972CEWI+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8972CEWI+T 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 MAX8972CEWI+T?
For technical support, including MAX8972CEWI+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8972CEWI+T requirements.
6.How does Aetrix verify that MAX8972CEWI+T is sourced from the original manufacturer or authorized distributors?
All MAX8972CEWI+T 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 MAX8972CEWI+T meets industry standards.
7.What is the process for return or replacement of MAX8972CEWI+T?
All MAX8972CEWI+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8972CEWI+T, 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 MAX8972CEWI+T part is unused and in its original packaging.
Return procedure for MAX8972CEWI+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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