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Analog Devices Inc./Maxim Integrated MAX77874BEWM+T
- Part No.:
- MAX77874BEWM+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 48-WFBGA, WLBGA
- Datasheet:
-
MAX77874BEWM+T.pdf
- Description:
- IC REG BUCK PROG 16A 48WLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,203
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Product details
Overview
MAX77874BEWM+T from Analog Devices is a quad-phase, 16A synchronous buck regulator designed for core power delivery to multicore CPU/GPU processors in mobile and embedded systems. It delivers I²C-programmable output voltage (0.25V–1.30V in 5mV steps), achieves ≤25mV load-transient droop in FPWM/Turbo-Skip modes, and operates from 2.7V–4.8V input across –40°C to +85°C.
For engineers reviewing the MAX77874BEWM+T datasheet, MAX77874BEWM+T pinout, MAX77874BEWM+T application, or MAX77874BEWM+T equivalent, key selection criteria include phase-interleaved transient response, programmable DVS ramp rates (up to 44 mV/μs), rotational phase spreading for light-load efficiency, and integrated thermal monitoring with 120°C/140°C alarms and 165°C shutdown.
Technical Context
The MAX77874BEWM+T implements a proprietary quad-phase PWM architecture with rotational phase spreading to minimize input/output ripple and improve light-load efficiency. Its Turbo Skip mode merges forced-PWM transient performance with skip-mode quiescent current (275–550 μA typical).
Control is fully I²C-based (Standard/Fast/HS-mode up to 3.4 MHz) with dedicated logic inputs for EN, DVS, and IRQ. Internal compensation, active discharge (100–140 Ω per phase), and zero-crossing current sensing (50–170 mA threshold) enable robust dynamic voltage scaling and seamless mode transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 16A total (4 × 4A phases); enables single-chip core rail for high-performance SoCs |
| Output Voltage Range | 0.25V–1.30V in 5mV steps; supports modern low-voltage CPU/GPU VDD rails |
| Input Voltage Range | 2.7V–4.8V; compatible with single-cell Li-ion/Li-poly battery systems |
| Transient Droop | ≤25mV (FPWM/Turbo-Skip), ≤40mV (Skip); ensures stable operation during CPU burst loads |
| VOUT Accuracy | ±2.5mV initial (0.9V), ±1.75% over line/temp; meets tight core voltage tolerance requirements |
| Switching Frequency | 1.9–2.1MHz (FPWM, no load); allows compact 0.22–0.47μF ceramic output capacitors |
| Thermal Protection | 120°C alarm, 140°C critical alarm, 165°C shutdown with 15°C hysteresis; prevents thermal runaway |
Pinout & Package
The MAX77874BEWM+T is housed in a 48-bump, 0.35mm pitch Wafer-Level Package (WLP), outline W482B2+1, optimized for ultra-compact PCB footprints in space-constrained mobile designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN, LX_A–LX_D | Main power input and phase switch nodes | Supports 4.3A RMS per LX; requires low-ESR input caps and proper thermal pad layout |
| SNS+, SNS− | Differential output voltage feedback | High-impedance (75–160kΩ) inputs enable remote sensing and noise rejection |
| VIO, SDA, SCL, IRQ, EN, DVS | I²C interface and control logic | VIO powers digital I/O (1.65–4.8V); IRQ signals faults; DVS triggers dynamic voltage scaling |
| PG_, AGND_, VDD_ANA, VDD_DIG | Power grounds and analog/digital supplies | Separate analog/digital supplies reduce noise coupling; PG_ is power ground reference |
| VCC, VPP | Main bias and high-side gate drive supplies | VCC (2.7–4.8V) powers control circuitry; VPP (up to 8V) drives high-side MOSFET gates |
Key Features
| Feature | Design Value |
|---|---|
| Turbo Skip Mode | Combines <25mV transient droop of FPWM with 275–550μA light-load IQ - eliminates efficiency/transient trade-off |
| Rotational Phase Spreading | Reduces input ripple by >50% vs. fixed-phase alignment; lowers required input capacitance |
| I²C Programmable Ramp Rates | Soft-start and DVS ramps configurable from 1.125 to 44 mV/μs - matches processor AVS timing requirements |
| Integrated Thermal Monitoring | Two independent thermal alarms (120°C/140°C) plus shutdown at 165°C - enables predictive thermal throttling |
| Active Discharge | 100–140Ω per-phase discharge path from LX to PG_ - ensures safe, rapid output discharge on disable |
Applications
| Smartphones & Tablets | Gaming & VR Headsets |
|---|---|
Use Scenario: Powering application processors (e.g., Snapdragon, Exynos) during camera capture, AI inference, or gaming bursts. IC Role / Device Role / Timing Role: Quad-phase core buck regulator delivering dynamically scaled VDD_CPU/VDD_GPU rails with sub-100ns fault response. Use Value: Enables 16A peak current within 0.5mm² WLP footprint while maintaining ≤25mV droop - critical for sustained multi-thread performance. |
Use Scenario: Supplying GPU and AI accelerator cores in standalone VR headsets requiring low-latency voltage scaling. IC Role / Device Role / Timing Role: High-bandwidth DVS controller with 1.5μs DVS-to-LX delay and programmable ramp rates up to 44 mV/μs. Use Value: Matches GPU DVFS timing windows without external DACs or sequencers - reduces BOM count and layout area. |
| AI Edge Cameras | Ultrabooks & Thin Clients |
Use Scenario: Powering vision SoCs (e.g., NVIDIA Jetson, Qualcomm QCS) during real-time machine vision processing. IC Role / Device Role / Timing Role: Core power IC with thermal alarm outputs feeding host MCU for adaptive frequency scaling. Use Value: 120°C/140°C thermal alarms allow firmware-controlled throttling before shutdown - preserves system responsiveness. |
Use Scenario: Delivering core voltage to Intel Core i-series or AMD Ryzen U-series CPUs in fanless ultrabooks. IC Role / Device Role / Timing Role: High-efficiency quad-phase regulator operating in Turbo Skip mode at light loads (<1A) and FPWM under load. Use Value: Achieves >90% efficiency at 1A and >85% at 10A (3.7VIN→0.9VOUT) - extends battery life without compromising burst performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-phase buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RTQ2134B-QA | 3.3V–5.5V input; 12A max; I²C + PMBus; no Turbo Skip mode; 30mV droop in forced-PWM | Targeted at automotive infotainment; AEC-Q100 qualified; higher VIN range but lower current capability | Choose for automotive-grade reliability where 12A suffices and PMBus is preferred over pure I²C. |
| ISL91302BIRZ-T | 2.5V–5.5V input; dual-output (2×6A); I²C; 20mV droop; no rotational phase spreading | Optimized for dual-rail SoCs (CPU + GPU); smaller 3.2mm × 3.2mm QFN; lacks thermal alarm granularity | Choose when dual independent outputs are needed and board space permits larger QFN vs. WLP. |
Compared with RTQ2134B-QA and ISL91302BIRZ-T, the MAX77874BEWM+T uniquely combines 16A capacity, Turbo Skip mode, rotational phase spreading, and fine-grained thermal alarms in a 2.1mm × 2.1mm WLP - making it optimal for space-constrained, high-transient mobile SoC applications.
Availability
MAX77874BEWM+T is available at Aetrix Electronics and suitable for smartphones, AI edge cameras, and ultrabooks requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX77874BEWM+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The MAX77874BEWM+T belongs to Analog Devices' MAX® Power Management family, engineered specifically for high-current, low-voltage core power delivery in mobile and embedded multicore processors.
FAQ
What is the maximum output current capability of the MAX77874BEWM+T?
The MAX77874BEWM+T delivers up to 16A total output current across its four interleaved phases, with each phase rated for 4A RMS. This is achieved using integrated high-side (65mΩ) and low-side (16mΩ) MOSFET drivers, enabling direct connection to external power stages without external drivers. The device maintains this rating across the full –40°C to +85°C operating temperature range.
How does the Turbo Skip mode in the MAX77874BEWM+T improve efficiency without sacrificing transient response?
Turbo Skip mode in the MAX77874BEWM+T dynamically engages forced-PWM behavior during load transients to maintain ≤25mV droop, while reverting to skip-mode switching during steady-state light loads to achieve 275–550μA quiescent current. This hybrid control eliminates the traditional trade-off between light-load efficiency and transient performance - a key differentiator versus conventional buck regulators.
What package type and dimensions does the MAX77874BEWM+T use, and what are its PCB layout implications?
The MAX77874BEWM+T uses a 48-bump, 0.35mm pitch Wafer-Level Package (WLP) with outline W482B2+1 and nominal dimensions of 2.1mm × 2.1mm. Its ultra-compact size demands strict adherence to land pattern AN1891, including thermal via placement under the central die pad and controlled impedance routing for SNS+/SNS− traces to preserve feedback accuracy.
Can the MAX77874BEWM+T support dynamic voltage scaling (DVS) with precise timing control?
Yes, the MAX77874BEWM+T supports hardware-triggered DVS via the dedicated DVS pin, with programmable ramp rates from 1.125 to 44 mV/μs (via I²C registers BUCK0RSR[1:0]). The DVS-to-first-LX delay is fixed at 1.5μs, enabling tight synchronization with processor AVS timing windows - critical for energy-efficient operation in ARM big.LITTLE and similar architectures.
What thermal protection features are integrated into the MAX77874BEWM+T?
The MAX77874BEWM+T integrates three-tier thermal protection: a 120°C thermal alarm (TJ120), a 140°C critical alarm (TJ140), and a 165°C thermal shutdown (TJSHDN), each with defined hysteresis (5°C or 15°C). These outputs are accessible via IRQ pin assertion and I²C status registers, allowing host firmware to implement predictive throttling before reaching shutdown thresholds.
MAX77874BEWM+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 4.8V
- Voltage - Output (Min/Fixed):
- 0.25V
- Voltage - Output (Max):
- 1.3V
- Current - Output:
- 16A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-WLP (2.22x2.92)
MAX77874BEWM+T FAQ
1.How can I place an order for MAX77874BEWM+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX77874BEWM+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 MAX77874BEWM+T reliable?
The price and inventory of MAX77874BEWM+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX77874BEWM+T is usually 5 days.
3.What payment methods are accepted for MAX77874BEWM+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX77874BEWM+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX77874BEWM+T?
MAX77874BEWM+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX77874BEWM+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 MAX77874BEWM+T?
For technical support, including MAX77874BEWM+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX77874BEWM+T requirements.
6.How does Aetrix verify that MAX77874BEWM+T is sourced from the original manufacturer or authorized distributors?
All MAX77874BEWM+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 MAX77874BEWM+T meets industry standards.
7.What is the process for return or replacement of MAX77874BEWM+T?
All MAX77874BEWM+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX77874BEWM+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 MAX77874BEWM+T part is unused and in its original packaging.
Return procedure for MAX77874BEWM+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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