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Analog Devices Inc./Maxim Integrated MAX77711EEWB+T
- Part No.:
- MAX77711EEWB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 64-WFBGA, WLBGA
- Datasheet:
-
MAX77711EEWB+T.pdf
- Description:
- IC REG BUCK PROG QUAD 64WLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,021
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Product details
Overview
MAX77711EEWB+T from Analog Devices is a quad-phase, 3A/phase configurable buck regulator with integrated 300mA pMOS LDO, supporting 2.3V–10V input and 0.25V–5.2V I²C-programmable output voltages. It enables flexible multi-output power delivery (1–4 outputs) for high-performance imaging and embedded systems, delivering up to 12A total current in 4Φ mode with 94% peak efficiency at 3.3VOUT/7.4VIN.
For engineers reviewing the MAX77711EEWB+T datasheet, MAX77711EEWB+T pinout, MAX77711EEWB+T application, or MAX77711EEWB+T equivalent, key selection criteria include phase configuration options (4Φ/(3+1)Φ/(2+2)Φ), programmable soft-start/DVS slew rates, pseudo-random spread-spectrum EMI suppression, GPIO-controlled buck sequencing, and the integrated LDO's 0.4V–1.975V output range.
Technical Context
The MAX77711EEWB+T implements adaptive off-time control per phase and supports five hardware-configurable phase groupings via PHCFG0/PHCFG1 pins. Its flexible power sequencer (FPS) provides programmable slot timing (0.625–5ms) and state-driven startup/shutdown sequences for complex SoC/FPGA power rails.
Each buck channel features independent current sensing (SNS+/SNS−), hard/soft short-circuit protection, thermal shutdown, and UVLO. The integrated 300mA LDO operates from 1.25V–5.5V input and delivers 0.4V–1.975V output with factory-programmable enable behavior and dedicated GPIO control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 10V - supports 2-cell Li+/Li-ion battery stacks and wide-input industrial supplies. |
| Output Voltage Range | 0.25V–5.2V (5mV steps below 1.3V; 20mV steps above 1V) - enables precise core voltage scaling for processors and FPGAs. |
| 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 transient response for compact designs. |
| LDO Output | 300mA, 0.4V–1.975V - powers low-noise analog or I/O supplies independently of buck regulation. |
| Efficiency | 94% peak at 3.3VOUT/7.4VIN; 85% peak at 1.1VOUT/7.4VIN - reduces thermal load in space-constrained camera and robotics applications. |
| I²C Interface | Standard/fast-mode (100kHz/400kHz), slave address selectable via A0 pin - enables dynamic voltage scaling and real-time fault monitoring. |
Pinout & Package
MAX77711EEWB+T uses a 64-bump, 3.54mm × 3.54mm wafer-level package (WLP) with 0.4mm pitch, optimized for ultra-compact PCB layouts in portable imaging and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1/IN2/IN3/IN4 | Buck input supply connections | Independent inputs per phase group; support split-input configurations for thermal distribution. |
| LX1–LX4 | Switch node outputs | Drive external inductors; each tied to its own PGNDx for optimal current sensing and EMI control. |
| SNS1+–SNS4+ | Current sense positive inputs | Enable per-phase output current monitoring with ±5% accuracy for load balancing and fault detection. |
| PHCFG0/PHCFG1 | Phase configuration select | Hardware-programmed 2-bit code sets output topology: 4Φ, (3+1)Φ, (2+2)Φ, (2+1+1)Φ, or (1+1+1+1)Φ. |
| GPIO1–GPIO6 | Multi-function I/O | Configurable as enable, DVS, FPWM, POK, or custom control signals; support hardware sequencing without host intervention. |
| VLDO | LDO output | 300mA regulated output; voltage set via register or factory OTP; includes dedicated INLDO and VLDO pins. |
| nIRQ | Interrupt output | Open-drain active-low signal indicating faults (thermal, overcurrent, UVLO) or status events (POK assertion). |
Key Features
| Feature | Design Value |
|---|---|
| Pseudo-random spread-spectrum modulation | Reduces peak EMI by >10dB across 150kHz–1GHz, easing EMC compliance in DSLR and action cameras. |
| Flexible power sequencer (FPS) | Programmable startup/shutdown timing (0.625–5ms slots) and state transitions eliminate external sequencing ICs for multi-rail SoCs. |
| Per-phase current monitoring | Integrated SNS+/SNS− pairs enable real-time load balancing and accurate current reporting via I²C for thermal management. |
| Soft-start/stop and DVS slew rate control | I²C-programmable ramp times prevent inrush current and ensure glitch-free voltage transitions during DVFS operations. |
| Hard and soft short-circuit protection | Dual-level fault response: soft short limits current to safe level; hard short triggers immediate shutdown and nIRQ assertion. |
Applications
| DSLR & Mirrorless Cameras | Embedded Microprocessors |
|---|---|
Use Scenario: Powering image sensor, ISP, and memory interfaces in high-resolution still/video capture systems. IC Role / Device Role / Timing Role: Quad-phase buck delivers tightly regulated 1.2V core, 1.8V I/O, 3.3V sensor, and 5V lens actuator rails with synchronized sequencing. Use Value: 94% peak efficiency minimizes heat near optical modules; spread-spectrum EMI suppression prevents noise coupling into analog video paths. | Use Scenario: Supplying multiple voltage domains for ARM Cortex-A/M cores, DDR memory, and peripheral I/O in edge AI devices. IC Role / Device Role / Timing Role: Configured as (2+2)Φ to generate 1.0V/10A CPU core and 1.8V/6A DDR rails with independent soft-start timing. Use Value: FPS-controlled sequencing ensures correct power-up order; GPIO-based DVS enables real-time voltage/frequency scaling under OS control. |
| Notebook Computers | Robotic Control Units |
Use Scenario: Replacing discrete DC/DC solutions in thin-and-light notebooks with dual-core SoCs and integrated GPUs. IC Role / Device Role / Timing Role: 4Φ mode delivers 12A at 0.85V for CPU/GPU; integrated LDO powers always-on MCU and RTC circuits. Use Value: Single-chip solution reduces BOM count and PCB area; 300mA LDO eliminates need for external low-noise bias supply. | Use Scenario: Powering motor drivers, IMUs, and wireless comms modules in autonomous mobile robots. IC Role / Device Role / Timing Role: (3+1)Φ configuration supplies 9A @ 5V for motors and 3A @ 3.3V for sensors/communication ICs with independent enable control. Use Value: Robust thermal protection and short-circuit recovery prevent system lockup during motor stall events; GPIO-controlled FPWM maintains regulation under heavy transient loads. |
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 |
|---|---|---|---|
| MAX77511EEWB+T | No integrated LDO; identical buck architecture, pinout, and I²C register map. | Used where only switching regulation is required; lacks 300mA LDO for auxiliary rails. | Select when LDO functionality is unnecessary and cost optimization is prioritized. |
| TPS65988DHAR | USB-C PD controller with dual 6A buck; no phase configurability or integrated LDO; different I²C interface and protection scheme. | Targeted at USB-C powered devices requiring PD negotiation; not suitable for standalone multi-rail sequencing. | Choose only for USB-C source/sink applications requiring PD protocol compliance. |
Compared with MAX77511EEWB+T, the MAX77711EEWB+T adds a verified 300mA LDO for auxiliary biasing-eliminating a discrete component-while maintaining identical buck performance, footprint, and software compatibility. TPS65988DHAR serves a fundamentally different application domain (USB-C PD) and cannot replace MAX77711EEWB+T in imaging or embedded processor power systems.
Availability
MAX77711EEWB+T is available at Aetrix Electronics and suitable for DSLR/mirrorless cameras, notebook computers, and robotic control units requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX77711EEWB+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 MAX77711EEWB+T belongs to Analog Devices' MAX77xxx family of highly integrated power management ICs, designed specifically for compact, high-efficiency multi-rail power delivery in battery-powered imaging and embedded computing platforms.
FAQ
What is the maximum output current capability of the MAX77711EEWB+T?
The MAX77711EEWB+T supports up to 12A total output current in 4Φ (quad-phase) configuration, with each phase rated for 3A continuous operation. This is achieved by combining all four switching phases into a single output rail using external inductors and proper PCB layout. Current sharing is managed internally via adaptive off-time control and per-phase current sensing.
Does the MAX77711EEWB+T include an integrated linear regulator?
Yes, the MAX77711EEWB+T integrates a 300mA pMOS LDO with output voltage programmable from 0.4V to 1.975V. This LDO is absent in the pin-compatible MAX77511EEWB+T variant. The LDO has dedicated INLDO and VLDO pins, supports hardware and software enable, and is factory-configurable for always-on or sequenced activation.
How is phase configuration selected on the MAX77711EEWB+T?
Phase configuration on the MAX77711EEWB+T is selected via two dedicated hardware pins: PHCFG0 and PHCFG1. These pins are sampled at power-up to set one of five topologies: 4Φ, (3+1)Φ, (2+2)Φ, (2+1+1)Φ, or (1+1+1+1)Φ. The mapping is defined in Table 6 of the datasheet and remains fixed until next power cycle; no I²C command can override this hardware setting.
What EMI reduction techniques does the MAX77711EEWB+T implement?
The MAX77711EEWB+T implements pseudo-random spread-spectrum modulation (PRSSM) across all switching phases, dithering the 1MHz nominal frequency to reduce peak radiated emissions. This technique lowers EMI by >10dB in the 150kHz–1GHz band, critical for meeting FCC/CE requirements in DSLR and action camera designs without adding shielding or filtering components.
Can the MAX77711EEWB+T support independent voltage and sequencing control for multiple outputs?
Yes, the MAX77711EEWB+T supports independent voltage and sequencing control for up to four outputs when configured in (1+1+1+1)Φ mode. Each buck channel has its own feedback resistors, current sense inputs, and programmable soft-start/stop timing. The flexible power sequencer (FPS) allows per-rail delay, ramp rate, and fault response settings via I²C registers.
MAX77711EEWB+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)
MAX77711EEWB+T FAQ
1.How can I place an order for MAX77711EEWB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX77711EEWB+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 MAX77711EEWB+T reliable?
The price and inventory of MAX77711EEWB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX77711EEWB+T is usually 5 days.
3.What payment methods are accepted for MAX77711EEWB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX77711EEWB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX77711EEWB+T?
MAX77711EEWB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX77711EEWB+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 MAX77711EEWB+T?
For technical support, including MAX77711EEWB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX77711EEWB+T requirements.
6.How does Aetrix verify that MAX77711EEWB+T is sourced from the original manufacturer or authorized distributors?
All MAX77711EEWB+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 MAX77711EEWB+T meets industry standards.
7.What is the process for return or replacement of MAX77711EEWB+T?
All MAX77711EEWB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX77711EEWB+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 MAX77711EEWB+T part is unused and in its original packaging.
Return procedure for MAX77711EEWB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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