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Analog Devices Inc./Maxim Integrated MAX77711BEWB+T
- Part No.:
- MAX77711BEWB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 64-WFBGA, WLBGA
- Datasheet:
-
MAX77711BEWB+T.pdf
- Description:
- 4-PHASE-CONFIGURABLE BUCK REGULA
- Quantity:
- Payment:
- Shipping:
Inventory:2,386
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Product details
Overview
The MAX77711BEWB+T from Analog Devices is a quad-phase, 3A/phase configurable buck regulator with integrated 300mA pMOS LDO, supporting 2.3V–10V input and programmable 0.25V–5.2V outputs via I²C. It enables flexible multi-output configurations (e.g., 4Φ, 2Φ+2Φ, 3Φ+1Φ) and delivers up to 12A total output current. It is designed for power management in compact, high-performance embedded systems such as DSLR cameras and FPGA-powered robotics.
For engineers reviewing the MAX77711BEWB+T datasheet, MAX77711BEWB+T pinout, MAX77711BEWB+T application, or MAX77711BEWB+T equivalent, key selection considerations include phase configuration flexibility, I²C-programmable DVS slew rates, pseudo-random spread-spectrum EMI suppression, GPIO-mapped buck control, and the integrated 300mA LDO - all within a 3.54mm × 3.54mm 64-bump WLP package.
Technical Context
The MAX77711BEWB+T implements adaptive off-time control per phase and supports hardware- and software-configurable power sequencing via its Flexible Power Sequencer (FPS), enabling precise startup/shutdown timing across up to four independent outputs. Its four switching phases can be combined into five distinct topologies - including single 12A output or quad 3A outputs - each with independent voltage, soft-start, and DVS settings.
It integrates six multi-function GPIOs supporting dedicated functions like enable, DVS, FPWM, and Power-OK monitoring, plus an interrupt output (nIRQ) for fault reporting. The device includes hard/soft short-circuit protection, thermal shutdown, UVLO, and active discharge during soft-stop - all managed without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 10V - supports 2-cell Li⁺/Li-ion battery inputs and wide-input industrial rails. |
| Output Voltage Range | 0.25V–5.2V with 5mV steps (0.25V–1.3V) and 20mV steps (1V–5.2V) - enables precise core voltage tuning for SoCs/FPGAs. |
| Max Output Current | 12A (4×3A phases combined) - scalable per configuration: 3A (1Φ), 6A (2Φ), 9A (3Φ), or 12A (4Φ). |
| Switching Frequency | 1MHz nominal per phase - fixed frequency operation with optional pseudo-random spread-spectrum modulation to reduce EMI peaks. |
| LDO Output | 300mA pMOS LDO (VLDO = 0.4V–1.975V) - low-noise auxiliary supply for I/O or bias rails, exclusive to MAX77711 variant. |
| Control Interface | I²C-compatible serial interface (7-bit address options) - enables dynamic voltage scaling, real-time fault readback, and register-level configuration. |
| Package | 64-bump wafer-level package (WLP), 3.54mm × 3.54mm, 0.4mm pitch - ultra-compact footprint for space-constrained portable electronics. |
Pinout & Package
The MAX77711BEWB+T is housed in a 64-bump, 3.54mm × 3.54mm wafer-level package (WLP) with 0.4mm bump pitch. Bump layout follows standard W643D3+1 land pattern per Maxim Integrated Application Note 1891.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1/IN2, IN3/IN4 | Buck input power rails | Dual-input pairs support independent or shared 2s battery inputs; each pair powers two phases. |
| LX1–LX4 | Phase switch node outputs | Four high-side switch outputs driving external inductors; routing determines phase grouping (e.g., LX1+LX2 = 2Φ output). |
| SNS1+ / SNS1−, etc. | Current-sense differential inputs | Four dedicated sense pairs per buck channel for accurate output current monitoring and short-circuit protection. |
| VOUT1–VOUT4 | Regulated output terminals | Four independent feedback nodes; mapping to LXx depends on programmed phase configuration (e.g., VOUT1 = LX1 in 1Φ mode). |
| PHCFG0 / PHCFG1 | Hardware phase config pins | Two-pin binary encoding selects default startup phase topology (4Φ, 3Φ+1Φ, 2Φ+2Φ, etc.) before I²C initialization. |
| GPIO1–GPIO6 | Multi-function digital I/O | Configurable as enable, DVS trigger, FPWM override, or Power-OK status; factory-default mappings defined in OTP. |
| nIRQ | Open-drain interrupt output | Active-low signal indicating faults (thermal, short, UVLO) or sequencer events; requires external pull-up. |
| SDA / SCL | I²C bidirectional data/clock | Standard 7-bit I²C interface (100kHz/400kHz) for full register access, including voltage, timing, and protection settings. |
| VLDO | LDO output | 300mA pMOS LDO output (0.4V–1.975V); only present on MAX77711 - absent on MAX77511. |
| INLDO | LDO input | Separate 1.25V–5.5V input rail for LDO; decoupled from main buck inputs to reduce noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable multi-phase topology | Five hardware-selectable phase groupings (4Φ, 3Φ+1Φ, 2Φ+2Φ, 2Φ+1Φ+1Φ, 1Φ×4) enable optimal trade-off between current capacity, ripple, and PCB area. |
| Pseudo-random spread-spectrum modulation | Reduces peak EMI by >10dB across 100kHz–1GHz without compromising regulation or efficiency. |
| Flexible Power Sequencer (FPS) | Programmable slot timing (0.625–5ms) and state-driven sequencing allow deterministic power-up/down of heterogeneous loads (e.g., SoC + memory + sensor). |
| Integrated 300mA pMOS LDO | Low-dropout, low-noise auxiliary supply with independent input (INLDO) and output (VLDO) pins - eliminates need for discrete LDO in dual-rail systems. |
| GPIO-mapped buck control | Six pins support hardware-enable, DVS-trigger, FPWM override, and Power-OK feedback - enabling autonomous operation without host processor intervention. |
Applications
| DSLR & Mirrorless Cameras | FPGA/ASIC Core Power |
|---|---|
Use Scenario: High-resolution image capture with rapid burst mode and real-time video encoding requiring tightly regulated, low-noise power rails. IC Role / Device Role / Timing Role: Primary multi-rail power manager delivering independent 1.2V (core), 1.8V (I/O), 3.3V (sensor), and 5V (actuator) supplies with synchronized soft-start and DVS. Use Value: Phase interleaving reduces input/output ripple and inductor size; spread-spectrum EMI suppression prevents interference with image sensor analog front-end. | Use Scenario: Powering Xilinx Artix-7 or Intel Cyclone V FPGAs with dynamic core voltage scaling during reconfiguration or partial bitstream loading. IC Role / Device Role / Timing Role: Configurable 4Φ buck supplying FPGA VCCINT (0.85–1.2V) with I²C-controlled DVS slew rate and FPS-managed sequencing relative to VCCAUX and VCCIO rails. Use Value: Programmable soft-start prevents inrush-induced voltage droop; GPIO-triggered DVS allows real-time voltage adjustment without I²C bus contention. |
| Notebook Subsystem Power | Robotics Motor & Sensor Hub |
Use Scenario: Compact ultrabook subsystems (e.g., display interface, touch controller, audio codec) needing isolated, low-quiescent power with minimal BOM count. IC Role / Device Role / Timing Role: Quad-output buck providing 1.1V (GPU), 1.8V (eDP PHY), 3.3V (touch IC), and 5V (audio amp) from shared 2s Li⁺ input; LDO supplies reference voltages. Use Value: Single-chip solution replaces four discrete DC/DCs and one LDO; WLP package enables placement under narrow PCB edges or near connectors. | Use Scenario: Autonomous mobile robot with simultaneous motor drive, IMU, LiDAR, and MCU operation demanding robust, fault-tolerant power distribution. IC Role / Device Role / Timing Role: Centralized power hub delivering 5V (motor drivers), 3.3V (MCU/Sensors), 1.2V (vision processor), and VLDO (reference ADC) with thermal/fault monitoring and graceful shutdown. Use Value: Hardware-based nIRQ fault signaling enables immediate MCU response; built-in short-circuit and thermal protection avoids system-level fuse blowing or board damage. |
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 |
|---|---|---|---|
| MAX77511BEWB+T | No integrated LDO; identical buck architecture, pinout, and I²C register map - differs only in absence of VLDO/INLDO pins and related circuitry. | Suitable where auxiliary LDO is provided externally or unnecessary; same PCB layout and firmware compatibility. | Select when LDO functionality is not required and cost optimization is prioritized. |
| TPS65988DHFR | USB-C PD controller with integrated 3A dual-phase buck (not quad-phase); lacks GPIO flexibility, FPS, and LDO; different I²C register structure. | Targeted at USB-C power delivery systems with Type-C port control - not a direct functional replacement for general-purpose multi-rail power management. | Choose only for USB-C source/sink applications requiring PD protocol compliance; not interchangeable for camera or FPGA use cases. |
Compared with MAX77511BEWB+T and TPS65988DHFR, the MAX77711BEWB+T uniquely combines quad-phase configurability, hardware-programmable topology, integrated 300mA LDO, and flexible sequencing - making it optimal for compact, multi-rail embedded systems where board space and supply count are constrained.
Availability
The MAX77711BEWB+T is available at Aetrix Electronics and suitable for DSLR cameras, FPGA/ASIC power delivery, and robotics subsystems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX77711BEWB+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 MAX77711BEWB+T belongs to Analog Devices' MAX77xxx family of highly integrated, configurable PMICs designed specifically for space-constrained, battery-powered imaging, computing, and robotics platforms requiring precision multi-rail power with intelligent sequencing and fault resilience.
FAQ
What is the maximum output current capability of the MAX77711BEWB+T?
The MAX77711BEWB+T supports up to 12A total output current when all four 3A phases are combined in 4Φ mode. Individual output current depends on configuration: 3A per output in 1Φ×4 mode, 6A in 2Φ+2Φ, 9A in 3Φ+1Φ, or 12A in single-output 4Φ mode. Each phase is rated for 3.2A RMS continuous current per Absolute Maximum Ratings.
Does the MAX77711BEWB+T include an integrated LDO, and what are its specifications?
Yes, the MAX77711BEWB+T includes a dedicated 300mA pMOS LDO (absent in MAX77511). Its output (VLDO) is adjustable from 0.4V to 1.975V in 25mV steps, powered by a separate 1.25V–5.5V input (INLDO). It features hardware/software enable, flexible power sequencing, and independent fault monitoring - confirmed in Electrical Characteristics section "Linear Regulator (MAX77711 Only)".
How is phase configuration selected on the MAX77711BEWB+T?
Phase configuration is selected via two hardware pins (PHCFG1, PHCFG0) that encode five default topologies (4Φ, 3Φ+1Φ, 2Φ+2Φ, 2Φ+1Φ+1Φ, 1Φ×4) at power-up. This setting can be overridden dynamically via I²C register writes to the PHASE_CFG register (address 0x1A), allowing runtime reconfiguration without changing PCB layout or strap resistors.
What protection features does the MAX77711BEWB+T provide?
The MAX77711BEWB+T provides hard and soft short-circuit protection per buck channel, input undervoltage lockout (UVLO: 2.1V–2.3V), thermal shutdown (150°C junction), and overtemperature alarm (OTLO). Fault conditions trigger nIRQ assertion and can be read via I²C status registers - all verified in the "Protection Features" section and Fault Protection State Machine diagram (Figure 10).
Is the MAX77711BEWB+T pin-compatible with the MAX77511BEWB+T?
Yes, the MAX77711BEWB+T and MAX77511BEWB+T share identical 64-bump WLP packaging, pinout, and buck regulator functionality. The only physical difference is that MAX77711 includes VLDO and INLDO bumps (bumps C1 and D1 per bump map), while MAX77511 leaves them depopulated - confirmed in Package Information and Bump Descriptions sections of the datasheet.
MAX77711BEWB+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)
MAX77711BEWB+T FAQ
1.How can I place an order for MAX77711BEWB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX77711BEWB+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 MAX77711BEWB+T reliable?
The price and inventory of MAX77711BEWB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX77711BEWB+T is usually 5 days.
3.What payment methods are accepted for MAX77711BEWB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX77711BEWB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX77711BEWB+T?
MAX77711BEWB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX77711BEWB+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 MAX77711BEWB+T?
For technical support, including MAX77711BEWB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX77711BEWB+T requirements.
6.How does Aetrix verify that MAX77711BEWB+T is sourced from the original manufacturer or authorized distributors?
All MAX77711BEWB+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 MAX77711BEWB+T meets industry standards.
7.What is the process for return or replacement of MAX77711BEWB+T?
All MAX77711BEWB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX77711BEWB+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 MAX77711BEWB+T part is unused and in its original packaging.
Return procedure for MAX77711BEWB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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