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Analog Devices Inc./Maxim Integrated MAX77542AAWU+
- Part No.:
- MAX77542AAWU+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 60-WFBGA, WLBGA
- Datasheet:
-
MAX77542AAWU+.pdf
- Description:
- IC REG BUCK ADJ 4A QUAD 60WLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,948
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Product details
Overview
MAX77542AAWU+ from Analog Devices is a quad-phase, phase-configurable step-down converter supporting up to 16A total output (4A per phase), operating from 2.8V–16V input and delivering 0.3V–5.2V outputs with ±0.5% accuracy. It employs adaptive constant-on-time current-mode control, supports five phase configurations (1+1+1+1, 2+1+1, 2+2, 3+1, 4), and integrates I²C programmability, spread-spectrum EMI reduction, and multifunction I/Os for power sequencing in high-density processor/FPGA power rails.
For engineers reviewing the MAX77542AAWU+ datasheet, MAX77542AAWU+ pinout, MAX77542AAWU+ application, or MAX77542AAWU+ equivalent, key selection criteria include its 4-phase configurability, differential voltage sensing, programmable soft-start/soft-stop slew rates, spread-spectrum modulation, and support for USB-C PD and multi-rail Li⁺ battery systems requiring tight regulation and low-noise operation.
Technical Context
The MAX77542AAWU+ implements an adaptive constant-on-time (COT) current-mode control architecture with internal slope compensation, enabling fast transient response and stable operation across wide VIN/VOUT ranges. Its flexible phase configuration is set via RSELx pins or I²C registers, allowing dynamic reassignment of four independent buck channels into 1–4 active phases with shared or independent outputs.
It integrates a flexible power sequencer (FPS) with independently programmable soft-start/soft-stop slew rates per output, prebiased startup capability, and active output discharge. Multifunction I/Os support EN, LPM, FPWM, POK, RSTINB, and RSTOB functions, while built-in protections include UVLO, thermal shutdown at +150°C, and cycle-by-cycle overcurrent detection with hiccup mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 16V - enables direct conversion from 1–3-cell Li⁺ batteries and USB-C PD rails without intermediate stages. |
| Output Voltage Range | 0.3V to 5.2V - supports core logic, I/O, memory, and analog rails for modern SoCs, FPGAs, and ASICs. |
| Max Output Current | 16A total (4A/phase) - achieved via configurable 4-phase topology with automatic current balancing and thermal derating above +120°C junction. |
| VOUT Accuracy | ±0.5% at +25°C - ensures precise rail regulation critical for low-voltage digital cores and high-speed interfaces. |
| Peak Efficiency | 94% at 7.6VIN/3.3VOUT/1MHz - minimizes power loss and thermal load in space-constrained portable and embedded systems. |
| Switching Frequency | 0.5/1.0/1.5MHz nominal - selectable for optimal trade-off between efficiency, size, and EMI; supports frequency tracking and spread-spectrum modulation. |
| Package | 60-bump WLP (4.36mm × 2.56mm × 0.65mm) - ultra-compact footprint ideal for mobile, wearables, and PCIe add-in cards where board area is constrained. |
Pinout & Package
MAX77542AAWU+ is housed in a 60-bump Wafer-Level Package (WLP) measuring 4.36mm × 2.56mm × 0.65mm, with thick UBM (under-bump metallization) for enhanced reliability and thermal performance on fine-pitch PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Input power supply inputs | Four independent high-side switch inputs-each tied to dedicated LX and PGND pairs for phase isolation and layout flexibility. |
| LX1–LX4 | Switch node outputs | Drain connections of internal high-side MOSFETs; require low-inductance routing to external inductors and input capacitors. |
| PGND1–PGND4 | Power ground returns | Dedicated phase-specific ground paths minimize cross-talk and improve current measurement accuracy via differential sensing. |
| SNS1P–SNS4P / SNS1N–SNS4N | Differential output voltage sense inputs | Enable Kelvin sensing for ±0.5% VOUT accuracy by rejecting PCB trace IR drop and noise. |
| SEL1–SEL4 | Default output voltage selection | Resistor-programmable VOUT1–VOUT4 presets at boot; overridden dynamically via I²C during operation. |
| MFIO1–MFIO8 | Configurable multifunction I/Os | Support EN, LPM, FPWM, POK, RSTINB/RSTOB, FPSI/FPSO, TWARNB, GPI/GPO, ADCMUX, and CLKDET functions. |
| SCL/SDA | I²C serial interface | Standard 100kHz/400kHz/1MHz I²C bus for real-time VOUT adjustment, fault monitoring, register read/write, and configuration updates. |
| IRQB | Open-drain interrupt output | Active-low signal indicating thermal warning, overcurrent, UVLO, or other fault conditions; supports interrupt-driven system-level error handling. |
Key Features
| Feature | Design Value |
|---|---|
| Phase-configurable quad buck | Five user-selectable phase groupings (1+1+1+1 through 4-phase) enable optimized current sharing, thermal distribution, and ripple cancellation for diverse SoC/FPGA rail requirements. |
| Differential output sensing | Eliminates PCB trace resistance error, ensuring ±0.5% output accuracy even under high-current load transients and board-level thermal gradients. |
| Programmable soft-start/soft-stop | Independent slew-rate control per output prevents inrush current, avoids brownout during power-up/down, and enables safe hot-plug operation in modular systems. |
| Spread-spectrum modulation | Reduces peak EMI by spreading switching energy across a 10kHz bandwidth-critical for passing CISPR-22/32 Class B emissions in audio/video and PCIe applications. |
| Prebiased startup & active discharge | Allows safe startup into precharged outputs and rapid rail collapse during shutdown-essential for systems with hold-up capacitance or strict power-state timing. |
| Integrated protection suite | Includes UVLO, thermal shutdown (+150°C), short-circuit hiccup mode, and cycle-by-cycle overcurrent limiting-enabling robust operation without external supervision circuitry. |
Applications
| Mobile Application Processors | FPGA/ASIC Core Power |
|---|---|
Use Scenario: Powering ARM-based application processors (e.g., Snapdragon, Exynos) in smartphones and tablets with multiple voltage domains (CPU, GPU, DDR, I/O). IC Role / Device Role / Timing Role: Primary quad-phase buck regulator delivering tightly regulated, dynamically scalable core and memory rails with sub-10µs transient response. Use Value: Enables DVFS (dynamic voltage/frequency scaling) via I²C, reduces solution size vs. discrete converters, and maintains ±0.5% accuracy under 10A load steps. | Use Scenario: Supplying core, auxiliary, and transceiver rails for Xilinx/Kintex or Intel/Arria FPGAs in edge AI accelerators and high-speed data acquisition systems. IC Role / Device Role / Timing Role: Configurable 4-phase buck providing up to 16A at 0.85V core rail with synchronized soft-start to meet FPGA power-on sequencing requirements. Use Value: Eliminates need for external sequencers; differential sensing ensures stable 0.85V ±4.25mV regulation during 5A/µs load transients. |
| USB-C Power Delivery Systems | PCIe/RAID Storage Controllers |
Use Scenario: Direct conversion from USB-C PD 5V/9V/15V/20V sources to multiple system rails (e.g., 3.3V, 1.8V, 1.2V) in portable docks and monitors. IC Role / Device Role / Timing Role: High-efficiency buck converter accepting wide-input PD voltages and delivering stable, low-noise outputs with spread-spectrum EMI suppression. Use Value: Achieves >92% efficiency at 15VIN/3.3VOUT/8A, reducing thermal load in fanless enclosures while meeting FCC Part 15 radiated emissions limits. | Use Scenario: Powering NVMe SSD controllers and RAID ASICs in enterprise storage blades where space, efficiency, and EMI are critical constraints. IC Role / Device Role / Timing Role: Quad-phase regulator supplying 12A at 1.2V core and 4A at 3.3V I/O with independent soft-start sequencing to prevent PCIe link training failures. Use Value: Reduces total solution size to <115mm² using 2520 inductors; spread-spectrum mode lowers conducted EMI on sensitive high-speed SerDes lanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-phase buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ8633BGLE-Z | 4-phase, 16A, 2.7V–16V input, but lacks I²C interface and differential sensing; fixed 0.6V reference only. | Best suited for cost-sensitive, fixed-rail applications without dynamic voltage scaling or precision sensing needs. | Select when I²C control and ±0.5% accuracy are not required; verify thermal design due to higher RDS(on) and no active discharge. |
| TPS546D24RQRT | Single-chip 60A 4-phase controller (external FETs); supports PMBus, but requires external MOSFETs, gate drivers, and more passive components. | Targeted at high-power server/telecom rails where >20A output and PMBus telemetry justify added complexity and board area. | Choose only if >16A output or PMBus telemetry is mandatory; MAX77542AAWU+ offers lower BOM count and smaller footprint for ≤16A applications. |
Compared with MPQ8633BGLE-Z and TPS546D24RQRT, the MAX77542AAWU+ delivers superior integration (integrated FETs, I²C, differential sensing, and sequencer), smallest package (60-bump WLP), and highest accuracy (±0.5%)-making it optimal for space-constrained, multi-rail consumer and industrial edge devices requiring dynamic control and low EMI.
Availability
MAX77542AAWU+ is available at Aetrix Electronics and suitable for mobile application processors, FPGA/ASIC core power, and USB-C PD systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX77542AAWU+ 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 technologies, serving industrial, automotive, communications, and consumer markets with precision power, signal chain, and RF solutions.
The MAX77542AAWU+ belongs to Analog Devices' Power Management IC portfolio, designed specifically for high-density, multi-rail power delivery in advanced mobile, edge computing, and high-speed interface applications demanding efficiency, accuracy, and programmability.
FAQ
What is the maximum continuous output current supported by the MAX77542AAWU+?
The MAX77542AAWU+ supports up to 16A total continuous output current-distributed across four phases (4A per phase). At full 16A, junction temperature must be maintained ≤+120°C per recommended operating conditions; derating applies above this threshold. Each phase operates independently with cycle-by-cycle current limiting and thermal monitoring to ensure safe operation under sustained loads.
Does the MAX77542AAWU+ support I²C-based dynamic voltage scaling (DVS)?
Yes, the MAX77542AAWU+ supports full I²C-based dynamic voltage scaling via its high-speed I²C interface (up to 1MHz). The device allows real-time adjustment of all four output voltages, phase configuration, soft-start/soft-stop slew rates, switching frequency, and spread-spectrum parameters-enabling precise DVS for ARM cores, GPUs, and FPGAs without requiring external DACs or sequencers.
What package type and dimensions does the MAX77542AAWU+ use?
The MAX77542AAWU+ uses a 60-bump Wafer-Level Package (WLP) with dimensions 4.36mm × 2.56mm × 0.65mm and thick UBM metallization. This ultra-compact, fine-pitch package is optimized for high-density PCB layouts in mobile, wearable, and PCIe add-in card applications, and requires adherence to Analog Devices' land pattern guidelines (AN-1891) for reliable assembly.
How does the MAX77542AAWU+ handle power sequencing across multiple outputs?
The MAX77542AAWU+ integrates a flexible power sequencer (FPS) that supports independent, programmable soft-start and soft-stop slew rates for each of its four outputs. Sequencing order and timing are configurable via I²C registers or hardware pins (CFG1/CFG2), enabling compliance with strict SoC/FPGA power-on requirements-including staggered ramp-up, hold-off delays, and coordinated shutdown with active discharge.
What protection features are built into the MAX77542AAWU+?
The MAX77542AAWU+ includes comprehensive protection: undervoltage lockout (UVLO) on SYS and ALT_IN inputs, thermal shutdown at +150°C with warning output at +125°C, cycle-by-cycle overcurrent detection with hiccup-mode recovery, short-circuit protection, and input/output overvoltage clamping. All faults trigger the open-drain IRQB pin and corresponding status registers accessible via I²C for system-level fault logging and recovery.
MAX77542AAWU+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 60-WFBGA, WLBGA
- Packaging:
- Strip
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 4
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.3V
- Voltage - Output (Max):
- 5.2V
- Current - Output:
- 4A
- Frequency - Switching:
- 500kHz, 1MHz, 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 60-WLP (2.56x4.36)
MAX77542AAWU+ FAQ
1.How can I place an order for MAX77542AAWU+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX77542AAWU+ 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 MAX77542AAWU+ reliable?
The price and inventory of MAX77542AAWU+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX77542AAWU+ is usually 5 days.
3.What payment methods are accepted for MAX77542AAWU+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX77542AAWU+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX77542AAWU+?
MAX77542AAWU+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX77542AAWU+ 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 MAX77542AAWU+?
For technical support, including MAX77542AAWU+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX77542AAWU+ requirements.
6.How does Aetrix verify that MAX77542AAWU+ is sourced from the original manufacturer or authorized distributors?
All MAX77542AAWU+ 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 MAX77542AAWU+ meets industry standards.
7.What is the process for return or replacement of MAX77542AAWU+?
All MAX77542AAWU+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX77542AAWU+, 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 MAX77542AAWU+ part is unused and in its original packaging.
Return procedure for MAX77542AAWU+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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