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Analog Devices Inc./Maxim Integrated MAX77711DEWB+T
- Part No.:
- MAX77711DEWB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 64-WFBGA, WLBGA
- Datasheet:
-
MAX77711DEWB+T.pdf
- Description:
- IC REG BUCK PROG QUAD 64WLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,072
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Product details
Overview
The MAX77711DEWB+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, phase configurations up to 4Φ (12A total), and delivers up to 94% peak efficiency at 3.3VOUT/7.4VIN. It is deployed in DSLR/mirrorless cameras and embedded microprocessor power rails.
For engineers reviewing the MAX77711DEWB+T datasheet, MAX77711DEWB+T pinout, MAX77711DEWB+T application, or MAX77711DEWB+T equivalent, key selection criteria include its 64-bump WLP package, I²C-programmable multi-phase topology, soft-start/stop and DVS slew control, pseudo-random spread-spectrum EMI suppression, and integrated LDO for auxiliary biasing - all critical for compact, thermally constrained, high-performance imaging and computing platforms.
Technical Context
The MAX77711DEWB+T implements an adaptive off-time synchronous buck control scheme across four independently switchable phases, enabling flexible output configurations (e.g., 4Φ single-output, 2Φ+2Φ dual-output, or 1Φ×4 quad-output). Each phase integrates internal high-side and low-side MOSFETs, current-sense circuitry, and dedicated LX/PGND terminals.
Its Flexible Power Sequencer (FPS) provides hardware- and software-controllable startup/shutdown timing with programmable slot pitch (0.625–5ms), while six GPIOs support buck enable, DVS, FPWM, and Power-OK signaling. The integrated 300mA pMOS LDO (VLDO: 0.4V–1.975V) operates from a separate INLDO supply (1.25V–5.5V) and is exclusive to the MAX77711 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 10V - supports direct connection to 2s Li+/Li-ion battery packs without pre-regulation. |
| 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 (4Φ mode) - achieved by combining all four 3A phases into a single high-current rail. |
| Switching Frequency | 1MHz nominal per phase - balances efficiency, inductor size, and EMI performance; supports pseudo-random spread-spectrum modulation. |
| LDO Output | 300mA pMOS LDO (VLDO = 0.4V–1.975V) - supplies low-noise bias for sensors, PLLs, or I/O interfaces independent of main buck outputs. |
| Package | 64-bump WLP, 3.54mm × 3.54mm - ultra-compact footprint ideal for space-constrained camera modules and portable robotics. |
| I²C Interface | Standard-mode (100kHz) and fast-mode (400kHz) compatible - enables dynamic voltage scaling and real-time fault monitoring in system firmware. |
Pinout & Package
The MAX77711DEWB+T is housed in a 64-bump wafer-level package (WLP), code W643D3+1, with 0.4mm bump pitch and 3.54mm × 3.54mm body size. Thermal resistance θJA is 38.2°C/W on a four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1/IN2, IN3/IN4 | Buck input power rails | Dual-input architecture allows independent sourcing for phase groups (e.g., IN1/IN2 for Φ1/Φ2; IN3/IN4 for Φ3/Φ4) to optimize thermal distribution. |
| LX1–LX4 | Phase switch-node outputs | Each connects to external inductor; requires low-ESR ceramic capacitors placed adjacent to minimize loop inductance. |
| SNS1+ / SNS1−, etc. | Current-sense differential inputs | Enable accurate per-phase current monitoring and short-circuit protection without sense resistors. |
| PHCFG0 / PHCFG1 | Hardware phase configuration pins | Set initial phase grouping (4Φ, 3+1Φ, 2+2Φ, etc.) at power-up before I²C initialization. |
| GPIO1–GPIO6 | Multi-function digital I/O | Configurable as enable, DVS trigger, FPWM override, or Power-OK status; support pull-up/down and interrupt generation. |
| nIRQ | Open-drain interrupt output | Asserts on faults (overcurrent, thermal, UVLO); shared across all regulators and LDO for consolidated system fault handling. |
| INLDO | LDO input supply | Accepts 1.25V–5.5V; decoupled separately to ensure clean LDO output under transient load conditions. |
| VLDO | LDO regulated output | Delivers up to 300mA with tight line/load regulation; used for noise-sensitive analog or reference circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable quad-phase buck topology | Enables scalable output current (3A–12A) and count (1–4 outputs) without changing BOM or layout - reduces design iterations for multi-rail SoC/FPGA systems. |
| Pseudo-random spread-spectrum modulation | Reduces peak EMI by >10dB across 100kHz–1GHz band - eliminates need for additional EMI filters in compact camera PCBs. |
| Programmable soft-start/stop and DVS slew rate | Prevents inrush current and voltage overshoot during power sequencing; supports controlled voltage transitions for DDR memory and processor cores. |
| Integrated 300mA pMOS LDO | Provides low-noise, fast-transient auxiliary supply from separate INLDO rail - avoids coupling noise from switching bucks into sensitive analog subsystems. |
| Flexible Power Sequencer (FPS) | Hardware- and I²C-controllable sequencing with 0.625–5ms slot resolution - ensures safe power-up/down order for complex SoC + memory + sensor stacks. |
Applications
| DSLR/Mirrorless Camera Power System | Embedded FPGA Core Rail |
|---|---|
Use Scenario: Powers image sensor, ISP, and high-speed interface logic in professional-grade mirrorless cameras with strict thermal and EMI limits. IC Role / Device Role / Timing Role: Primary multi-rail PMIC delivering 1.2V (core), 1.8V (I/O), 3.3V (interface), and 5V (actuator) from a single 7.4V 2s Li-ion battery. Use Value: Phase interleaving reduces input/output ripple and thermal hotspots; spread-spectrum EMI suppression meets CISPR-22 Class B emissions requirements. | Use Scenario: Supplies configurable core voltage (0.75V–1.2V) and auxiliary rails (1.8V, 3.3V) to Xilinx Zynq or Intel Cyclone FPGA in edge AI inference modules. IC Role / Device Role / Timing Role: Configured as (2+1+1)Φ: two phases for 1.0V/6A core rail, one for 1.8V/3A I/O, one for 3.3V/3A transceivers. Use Value: I²C-based DVS enables real-time voltage scaling during compute workload changes, reducing dynamic power by up to 35%. |
| Robotics Motor Control Subsystem | Industrial HD Video Encoder Board |
Use Scenario: Powers MCU, motor gate drivers, and position feedback sensors in compact mobile robots operating from 2s Li-ion packs. IC Role / Device Role / Timing Role: Delivers 3.3V/3A (MCU), 5V/3A (drivers), and 1.2V/3A (sensors) with independent sequencing and fault isolation. Use Value: Hardware GPIO control enables immediate shutdown of motor rails upon overcurrent detection, preventing actuator damage. | Use Scenario: Provides stable, low-noise power to CMOS image sensor, video encoder ASIC, and HDMI PHY in broadcast-quality field encoders. IC Role / Device Role / Timing Role: Uses integrated 300mA LDO (VLDO) for HDMI PHY bias and 4Φ buck for 1.1V/12A encoder core rail. Use Value: Active discharge resistor and soft-stop prevent voltage hold-up on encoder core rail, ensuring clean reset during hot-plug events. |
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 |
|---|---|---|---|
| MAX77511DEWB+T | No integrated LDO; identical buck architecture, pinout, and I²C register map. | Suitable where auxiliary LDO is implemented externally or not required. | Select when LDO functionality is unnecessary and cost optimization is prioritized. |
| TPS65988DHAR | USB-C PD controller with dual 6A buck converters; no quad-phase flexibility or integrated LDO; different package (64-pin QFN). | Targeted at USB-C powered devices requiring PD negotiation, not standalone battery-powered imaging systems. | Choose only if USB-C power delivery and alternate protocol support are mandatory system requirements. |
Compared with MAX77511DEWB+T and TPS65988DHAR, the MAX77711DEWB+T uniquely combines quad-phase configurability, 300mA integrated LDO, and ultra-compact WLP packaging - making it optimal for thermally dense, battery-operated imaging and embedded computing where auxiliary biasing and layout area are critical constraints.
Availability
The MAX77711DEWB+T is available at Aetrix Electronics and suitable for DSLR/mirrorless camera designs, embedded FPGA power systems, and robotics motor control subsystems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX77711DEWB+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 MAX77711DEWB+T belongs to the MAX77xxx family of highly integrated power management ICs designed specifically for space-constrained, battery-powered imaging, computing, and portable electronics - emphasizing configurability, efficiency, and EMI robustness.
FAQ
What is the maximum output current capability of the MAX77711DEWB+T?
When configured in 4Φ mode, the MAX77711DEWB+T delivers up to 12A total output current by combining all four 3A phases into a single rail. This is confirmed in the datasheet's Benefits and Features section and supported by electrical characteristics showing 3.2A RMS per LX pin. The actual achievable current depends on thermal design, PCB copper area, and input voltage.
Does the MAX77711DEWB+T include an integrated linear regulator?
Yes, the MAX77711DEWB+T includes a dedicated 300mA pMOS LDO (VLDO) with output range 0.4V–1.975V, powered from a separate INLDO supply (1.25V–5.5V). This LDO is absent in the MAX77511DEWB+T variant and is explicitly documented in the "Electrical Characteristics-Linear Regulator (MAX77711 Only)" section of the datasheet.
What package type and dimensions does the MAX77711DEWB+T use?
The MAX77711DEWB+T uses a 64-bump wafer-level package (WLP) with outline code W643D3+1, measuring 3.54mm × 3.54mm and 0.4mm bump pitch. Its thermal resistance θJA is 38.2°C/W on a four-layer board, as specified in the "Package Information" section of the official datasheet.
How is phase configuration set on the MAX77711DEWB+T?
Phase configuration on the MAX77711DEWB+T is set via two hardware pins - PHCFG0 and PHCFG1 - which determine the default grouping (e.g., 4Φ, 3+1Φ, 2+2Φ) at power-up. This setting can be overridden via I²C register writes after initialization, providing both boot-time reliability and runtime flexibility.
What protection features does the MAX77711DEWB+T provide?
The MAX77711DEWB+T includes hard and soft short-circuit protection per phase, input undervoltage lockout (UVLO), thermal shutdown (150°C junction limit), and overtemperature alarms. These are implemented in hardware and do not require firmware intervention, ensuring fail-safe operation in battery-powered systems.
MAX77711DEWB+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
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 4
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 0.25V
- Voltage - Output (Max):
- 5.2V
- Current - Output:
- 3A, 3A, 3A, 3A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-WLP (3.54x3.54)
MAX77711DEWB+T FAQ
1.How can I place an order for MAX77711DEWB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX77711DEWB+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 MAX77711DEWB+T reliable?
The price and inventory of MAX77711DEWB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX77711DEWB+T is usually 5 days.
3.What payment methods are accepted for MAX77711DEWB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX77711DEWB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX77711DEWB+T?
MAX77711DEWB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX77711DEWB+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 MAX77711DEWB+T?
For technical support, including MAX77711DEWB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX77711DEWB+T requirements.
6.How does Aetrix verify that MAX77711DEWB+T is sourced from the original manufacturer or authorized distributors?
All MAX77711DEWB+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 MAX77711DEWB+T meets industry standards.
7.What is the process for return or replacement of MAX77711DEWB+T?
All MAX77711DEWB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX77711DEWB+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 MAX77711DEWB+T part is unused and in its original packaging.
Return procedure for MAX77711DEWB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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