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Analog Devices Inc./Maxim Integrated MAX77711AEWB+T
- Part No.:
- MAX77711AEWB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 64-WFBGA, WLBGA
- Datasheet:
-
MAX77711AEWB+T.pdf
- Description:
- 4-PHASE-CONFIGURABLE BUCK REGULA
- Quantity:
- Payment:
- Shipping:
Inventory:3,465
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Product details
Overview
The MAX77711AEWB+T from Analog Devices is a quad-phase, 3A/phase configurable buck regulator with integrated 300mA pMOS LDO, designed for 2-cell Li+/Li-ion battery-powered systems (2.3V–10V input). It supports programmable output voltages from 0.25V to 5.2V via I²C, offers phase configurations up to 4Φ (12A total), and delivers peak efficiency of 94% at 3.3VOUT/7.4VIN - enabling compact, high-density power delivery in DSLR cameras and embedded microprocessor applications.
For engineers reviewing the MAX77711AEWB+T datasheet, MAX77711AEWB+T pinout, MAX77711AEWB+T application, or MAX77711AEWB+T equivalent, key selection considerations include its 64-bump WLP package, I²C-programmable DVS/slew rates, pseudo-random spread-spectrum EMI suppression, GPIO-based hardware buck control (enable/DVS/FPWM/POK), and built-in flexible sequencing with soft-start/stop.
Technical Context
The MAX77711AEWB+T implements adaptive off-time control across four synchronous buck phases, each capable of 3A continuous output. Phase configuration (4Φ, 3+1Φ, 2+2Φ, etc.) is set via PHCFG0/PHCFG1 pins or I²C registers, directly determining output count and current capability per rail.
It integrates a dedicated 300mA pMOS LDO (VLDO: 0.4V–1.975V) with independent enable control, six multi-function GPIOs supporting hardware buck sequencing and status monitoring, and a flexible power sequencer (FPS) with programmable slot timing (0.625–5ms) and state-driven startup/shutdown transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 10V - supports direct connection to 2s Li+/Li-ion batteries (7.4V nominal) and wide-input industrial rails. |
| Output Voltage Range | 0.25V–5.2V (5mV steps below 1.3V; 20mV steps above 1V) - enables precise core voltage scaling for FPGAs and ASICs. |
| Max Output Current | 12A (4-phase mode) - achieved by combining all four 3A phases into a single output, reducing ripple and thermal stress. |
| Switching Frequency | 1MHz nominal per phase - balances efficiency, inductor size, and EMI; supports pseudo-random spread-spectrum modulation. |
| LDO Output | 300mA pMOS LDO (VLDO: 0.4V–1.975V) - provides low-noise auxiliary supply for I/O or bias rails, independent of buck operation. |
| Package | 64-bump WLP, 3.54mm × 3.54mm - ultra-compact footprint optimized for space-constrained portable electronics. |
| I²C Interface | Standard-mode (100kHz) and fast-mode (400kHz) compatible - enables dynamic voltage scaling, fault logging, and real-time configuration without external logic. |
Pinout & Package
MAX77711AEWB+T uses a 64-bump wafer-level package (WLP), code W643D3+1, with 0.4mm pitch and 3.54mm × 3.54mm body. Bump layout follows JEDEC MO-220 standard with defined A1 corner marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1/IN2, IN3/IN4 | Buck input power rails | Dual-input structure allows independent or shared sourcing for phase grouping (e.g., 2Φ+2Φ); each pair rated for 3.2A RMS. |
| LX1–LX4 | Phase switch-node outputs | Connect to external inductors; internal high-side/low-side MOSFETs drive each LX with adaptive off-time control. |
| SNS1+–SNS4+, SNS1−–SNS4− | Buck current-sense inputs | Enable accurate output current monitoring per phase; differential sensing rejects common-mode noise. |
| PHCFG0, PHCFG1 | Hardware phase-configuration select | Set initial phase topology (4Φ, 3+1Φ, etc.) at power-up; overridden by I²C if configured. |
| GPIO1–GPIO6 | Multi-function digital I/O | Configurable as enable, DVS trigger, FPWM mode select, or POK output - reduces external component count. |
| nIRQ | Open-drain interrupt output | Asserts on faults (thermal, short, UVLO) or status events (power-ok, sequencing complete); sinks 2mA max. |
| SDA, SCL | I²C serial interface | Supports address selection via A0/A1 pins; enables full register access for dynamic reconfiguration and telemetry. |
| VLDO, INLDO | LDO input/output terminals | INLDO accepts 1.25V–5.5V input; VLDO delivers regulated 0.4V–1.975V at up to 300mA - only present on MAX77711 variant. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable quad-phase buck architecture | Enables 1–4 independent outputs (e.g., 1.1V@12A, 1.8V@6A + 3.3V@3A) using same IC - eliminates need for multiple discrete regulators. |
| Pseudo-random spread-spectrum modulation | Reduces peak EMI by >10dB across 100kHz–10MHz band - critical for meeting FCC/CE radiated emissions in camera modules. |
| Flexible power sequencer (FPS) | Programmable startup/shutdown order and timing (0.625–5ms slots) - ensures safe power-up of SoCs with strict VDDIO/VDDCORE sequencing requirements. |
| Hardware GPIO buck control | Direct enable/DVS/FPWM/POK signaling via GPIOs - bypasses I²C latency for time-critical events like processor reset or thermal shutdown. |
| Integrated 300mA pMOS LDO | Provides low-noise, fast-transient auxiliary supply (0.4V–1.975V) with independent enable - replaces discrete LDO in FPGA I/O bank or sensor bias applications. |
Applications
| DSLR & Mirrorless Cameras | Embedded Microprocessors (FPGAs/ASICs) |
|---|---|
Use Scenario: Powering image sensor, ISP, and memory subsystems in compact interchangeable-lens cameras with dual 2s Li-ion packs. IC Role / Device Role / Timing Role: Primary quad-rail PMIC delivering 1.1V@6A (core), 1.8V@3A (I/O), 2.8V@3A (sensor), and 3.3V@3A (memory) with synchronized soft-start. Use Value: Eliminates four discrete buck converters; spread-spectrum EMI suppression prevents RF interference with Wi-Fi/Bluetooth coexistence. | Use Scenario: Supplying heterogeneous voltage domains (core, I/O, PLL, aux) for Xilinx Zynq or Intel Cyclone SoCs in robotics edge controllers. IC Role / Device Role / Timing Role: Configured as (2+2)Φ to generate 0.85V@9A (core) and 1.8V@6A (I/O) with FPS-controlled ramp rates matching FPGA VCCINT/VCCIO specs. Use Value: Achieves <1% output droop during 4A/μs load transients; GPIO-triggered DVS enables dynamic frequency scaling without host CPU intervention. |
| Notebook Computers | Action Cameras & HD Video Recorders |
Use Scenario: Supporting low-power compute modules (e.g., NXP i.MX8M Plus) in fanless ultrabooks with 2s battery input. IC Role / Device Role / Timing Role: Operating in 4Φ mode for 1.0V@12A CPU rail, with LDO supplying 1.2V@300mA for PCIe reference clock buffer. Use Value: 94% peak efficiency at 3.3VOUT minimizes thermal load in thin chassis; thermal protection shuts down before junction exceeds 125°C. | Use Scenario: Power management in ruggedized 4K action cams exposed to wide temperature (-20°C to +70°C) and mechanical shock. IC Role / Device Role / Timing Role: Delivering 1.2V@3A (ISP), 2.8V@3A (CMOS sensor), and 3.3V@3A (Wi-Fi SoC) with hard/soft-short protection against connector arcing. Use Value: Wafer-level package withstands 2000g shock; built-in UVLO prevents brownout-induced firmware corruption during battery insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-phase buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX77511AEWB+T | No integrated LDO; identical buck architecture, pinout, and I²C register map - differs only in LDO omission. | Used where auxiliary LDO is unnecessary or provided externally; lower cost and slightly lower quiescent current. | Select when system already includes a dedicated LDO or requires minimal BOM count for cost-sensitive designs. |
| TPS65988DHAR | USB-C PD controller with integrated 3A/phase buck (dual-phase only); lacks GPIO flexibility, spread-spectrum, and FPS sequencing. | Targeted at USB-C powered devices requiring PD negotiation; not suitable for standalone battery-powered imaging systems. | Choose only for USB-C host applications needing native PD protocol support - not a functional substitute for MAX77711AEWB+T's broad configurability. |
Compared with MAX77511AEWB+T and TPS65988DHAR, the MAX77711AEWB+T uniquely combines quad-phase 3A/phase buck regulation, integrated 300mA LDO, and flexible hardware/software sequencing - making it optimal for space-constrained, multi-rail battery-powered imaging and embedded computing platforms where EMI, thermal, and sequencing integrity are critical.
Availability
MAX77711AEWB+T is available at Aetrix Electronics and suitable for DSLR cameras, notebook computers, and embedded microprocessor power systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX77711AEWB+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and consumer markets.
The MAX77711AEWB+T belongs to Analog Devices' MAX77xxx family of highly integrated, configurable PMICs designed specifically for battery-powered imaging, portable computing, and embedded SoC applications demanding compact size, low EMI, and precise power sequencing.
FAQ
What is the maximum output current capability of the MAX77711AEWB+T?
The MAX77711AEWB+T supports up to 12A total output current when all four 3A phases are combined in 4Φ mode. Each individual phase delivers 3A continuously, and configurations such as (3+1)Φ yield 9A + 3A on separate rails. The device maintains this rating across -40°C to +125°C junction temperature with appropriate PCB thermal design and 2520 inductors.
Does the MAX77711AEWB+T include an integrated LDO, and what are its specifications?
Yes, the MAX77711AEWB+T integrates a 300mA pMOS LDO (absent in the MAX77511 variant). Its output voltage is adjustable from 0.4V to 1.975V in 25mV steps, with input range of 1.25V to 5.5V. It features independent software/hardware enable control, soft-start, and thermal shutdown - making it suitable for powering low-noise I/O banks or sensor bias rails.
How does the MAX77711AEWB+T suppress electromagnetic interference (EMI)?
The MAX77711AEWB+T employs pseudo-random spread-spectrum modulation (PRSSM) across all buck phases, dithering the 1MHz switching frequency to reduce peak spectral energy. This technique lowers radiated EMI by >10dB in the 100kHz–10MHz band - a key advantage over fixed-frequency converters in compact camera and video recorder designs where metal shielding is impractical.
Can the MAX77711AEWB+T be configured without I²C communication?
Yes. The MAX77711AEWB+T supports pin-strapped configuration via PHCFG0/PHCFG1 for default phase topology (e.g., 4Φ, 2+2Φ), and GPIOs can control enable, DVS, FPWM, and POK functions without I²C. However, full functionality - including output voltage programming, soft-start timing, and register-based fault logging - requires I²C initialization and runtime control.
What package type and thermal performance does the MAX77711AEWB+T use?
The MAX77711AEWB+T uses a 64-bump wafer-level package (WLP), 3.54mm × 3.54mm, with 0.4mm pitch (package code W643D3+1). Its thermal resistance is θJA = 38.2°C/W on a four-layer board. At 2094mW max power dissipation (TA = +70°C), it supports continuous operation up to +125°C junction temperature with proper copper pour and thermal vias under the PGND bumps.
MAX77711AEWB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 64-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, Battery Powered Devices
- Voltage - Input:
- 2.3V ~ 10V
- Number of Outputs:
- 4
- Voltage - Output:
- 0.25V ~ 5.2V
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-WLP (3.54x3.54)
MAX77711AEWB+T FAQ
1.How can I place an order for MAX77711AEWB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX77711AEWB+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 MAX77711AEWB+T reliable?
The price and inventory of MAX77711AEWB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX77711AEWB+T is usually 5 days.
3.What payment methods are accepted for MAX77711AEWB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX77711AEWB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX77711AEWB+T?
MAX77711AEWB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX77711AEWB+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 MAX77711AEWB+T?
For technical support, including MAX77711AEWB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX77711AEWB+T requirements.
6.How does Aetrix verify that MAX77711AEWB+T is sourced from the original manufacturer or authorized distributors?
All MAX77711AEWB+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 MAX77711AEWB+T meets industry standards.
7.What is the process for return or replacement of MAX77711AEWB+T?
All MAX77711AEWB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX77711AEWB+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 MAX77711AEWB+T part is unused and in its original packaging.
Return procedure for MAX77711AEWB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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