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Analog Devices Inc./Maxim Integrated MAX77541AAWV+T
- Part No.:
- MAX77541AAWV+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 30-WFBGA, WLBGA
- Datasheet:
-
MAX77541AAWV+T.pdf
- Description:
- IC REG BUCK ADJ 3A/3A DL 30WLP
- Quantity:
- Payment:
- Shipping:
Inventory:790
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Product details
Overview
MAX77541AAWV+T from Analog Devices is a dual-phase, phase-configurable buck converter IC designed for high-efficiency power delivery in space-constrained battery-powered systems. It delivers up to 6A total output (2×3A phases) with I²C programmability, ±0.5% VOUT accuracy at 25°C, and 91% peak efficiency at 3.8VIN/1.1VOUT. It serves as the primary core voltage regulator for microprocessors and FPGAs in gaming consoles and VR headsets.
For engineers reviewing the MAX77541AAWV+T datasheet, MAX77541AAWV+T pinout, MAX77541AAWV+T application, or MAX77541AAWV+T equivalent, key selection criteria include its adaptive COT control architecture, dual-phase vs. single-phase configuration flexibility, programmable soft-start/slew rates, spread-spectrum EMI reduction, and support for prebiased startup with active output discharge.
Technical Context
The MAX77541AAWV+T implements an adaptive constant-on-time (COT) current-mode control scheme with independent phase management, enabling seamless transition between 1Φ+1Φ (dual 3A outputs) and 2Φ (single 6A output) configurations via RSEL1/RSEL2 pins or I²C register writes. Its internal high-side/low-side MOSFETs feature 16mΩ/10mΩ typical RDS(on) and programmable peak current limits (1.6–5.2A).
Built-in protections include UVLO (2.2V rising threshold), thermal shutdown at +165°C with 15°C hysteresis, short-circuit protection, and dedicated POKx outputs per buck channel. The device integrates a 10-bit ADC for SYS, VOUT, and junction temperature monitoring, all accessible via I²C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.2V to 5.5V - supports single-cell Li⁺ (2.7–4.2V) and fixed 5VDC rails without external LDO pre-regulation. |
| Output Configuration | Configurable as two independent 3A bucks (1Φ+1Φ) or one 6A buck (2Φ) - enables dynamic load partitioning or high-current core rail generation. |
| VOUT Accuracy | ±0.5% at 25°C (default VOUT) - ensures tight regulation for sensitive digital loads like FPGA I/O or CPU cores. |
| Peak Efficiency | 91% at 3.8VIN/1.1VOUT/1.6MHz - minimizes thermal stress and extends battery runtime in portable devices. |
| Switching Frequency | 0.5/1.0/1.6MHz nominal - selectable for optimal trade-off between inductor size, efficiency, and EMI performance. |
| Package | 30-bump WLP (2.51mm × 2.31mm × 0.7mm) - ultra-compact footprint ideal for VR headset PCBs with strict height constraints. |
| I²C Interface | High-speed (up to 1MHz) slave interface with configurable address - enables real-time dynamic voltage scaling and fault logging in system firmware. |
Pinout & Package
MAX77541AAWV+T is packaged in a 30-bump Wafer-Level Package (WLP), 0.4mm pitch, outline number 21-100479, with dimensions 2.51mm × 2.31mm × 0.7mm. Thermal resistance θJA = 49.38°C/W on a four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2 | Input power supply inputs | Accept independent 2.2–5.5V sources; enable dual-input redundancy or separate rail conditioning. |
| LX1, LX2 | Power switch node outputs | Drive external inductors; require low-ESR ceramic capacitors and careful layout to minimize switching noise. |
| SNS1, SNS2 | Output voltage feedback sense inputs | Enable precision resistive divider-based VOUT setting; support remote sensing for improved load regulation. |
| EN1, EN2 | Hardware enable inputs | Direct GPIO control of each buck phase; support staggered power-up sequencing for inrush current limiting. |
| POK1, POK2 | Power-good status outputs | Open-drain signals indicating valid VOUT; used for system-level power sequencing and fault detection. |
| FPWM1, FPWM2 | Forced PWM mode controls | Override automatic SKIP/LP-SKIP operation to guarantee fixed-frequency behavior for noise-sensitive analog circuits. |
| SCL, SDA | I²C serial interface | Enable full register access for dynamic VOUT, slew rate, soft-start, and protection threshold configuration. |
| IRQB | Interrupt request output | Active-low open-drain signal asserting on thermal warning, overcurrent, or UVLO events; supports interrupt-driven fault handling. |
| SEL1, SEL2 | Default phase/VOUT configuration pins | Set initial 1Φ/2Φ mode and factory VOUT values at power-on before I²C initialization. |
| CFG | Configuration mode select | Determines whether RCFG resistor network configures I²C address, frequency, or current limit at startup. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive COT control | Delivers fast transient response (<5µs recovery for 1A step) without external compensation components. |
| Spread-spectrum modulation | Reduces peak EMI by >10dB across 100kHz–1GHz band, easing FCC/CE compliance in compact enclosures. |
| Prebiased startup | Allows safe turn-on into precharged output capacitors - critical for hot-swap and multi-rail sequencing applications. |
| Active output discharge | Internally discharges VOUT when disabled (via dedicated NMOS), preventing floating voltages that could damage downstream logic. |
| Programmable inductor current limit | Four settings (1.6–5.2A) let designers optimize inductor size and saturation margin for specific load profiles. |
Applications
| Gaming Console Core Power | VR/AR Headset SoC Supply |
|---|---|
Use Scenario: Powers application processor and GPU cores in handheld gaming devices requiring rapid load transients and thermal efficiency. IC Role / Device Role / Timing Role: Primary high-current DC-DC regulator delivering dynamically scaled core voltage (0.3–1.2V) under firmware control. Use Value: 91% peak efficiency and 0.7mm profile reduce heat buildup and PCB area, extending battery life and enabling fanless design. | Use Scenario: Supplies SoC, display driver, and sensor fusion ASIC in lightweight VR headsets with strict height and thermal budgets. IC Role / Device Role / Timing Role: Dual-phase buck generating parallel 1.1V and 1.8V rails with independent enable and POK signaling. Use Value: Prebiased startup and active discharge ensure glitch-free power cycling during motion-triggered sleep/wake transitions. |
| FPGA I/O Bank Regulation | Network Switch ASIC Core |
Use Scenario: Regulates multiple I/O voltage domains (1.2V, 1.8V, 2.5V) in reconfigurable FPGA-based edge computing modules. IC Role / Device Role / Timing Role: Configurable dual-output buck providing isolated, independently controlled power rails with I²C telemetry. Use Value: ±0.5% VOUT accuracy and programmable soft-start prevent I/O timing violations during partial reconfiguration. | Use Scenario: Delivers stable 0.85V core voltage to high-performance networking ASICs in 1U switches with dense component layout. IC Role / Device Role / Timing Role: Single 6A 2Φ buck operating in forced-PWM mode to suppress switching noise near SERDES lanes. Use Value: Spread-spectrum and frequency tracking minimize conducted EMI coupling into high-speed serial interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-phase buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6521905RGER | Single 6A output only; no 1Φ+1Φ dual-output mode; lower quiescent current (15μA vs. 25μA standby) | Lacks independent POK/EN per phase; no prebiased startup or active discharge | Preferred when only monolithic 6A rail needed and lowest IQ is critical; not suitable for split-rail designs. |
| ISL9122AIRTZ-T7A | Supports 1Φ+1Φ and 2Φ modes; includes integrated battery charger; lower max input (5.5V same, but 3.6V abs max on some pins) | Includes USB PD-compatible charging path; larger 2.5mm × 3mm QFN package | Best for battery-charging + regulation combo; requires layout revision due to different pinout and larger footprint. |
Compared with TPS6521905RGER and ISL9122AIRTZ-T7A, the MAX77541AAWV+T uniquely combines true dual-phase configurability, active output discharge, and 30-bump WLP packaging-making it optimal for thermally constrained, multi-rail portable electronics where board space and dynamic sequencing are critical.
Availability
MAX77541AAWV+T is available at Aetrix Electronics and suitable for gaming console power management, VR/AR headset SoC supplies, and FPGA I/O regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX77541AAWV+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 MAX77541AAWV+T belongs to Analog Devices' MAX® power management portfolio, engineered specifically for high-efficiency, ultra-compact DC-DC conversion in next-generation portable and wearable electronics.
FAQ
What is the maximum continuous output current supported by the MAX77541AAWV+T in dual-phase (2Φ) mode?
The MAX77541AAWV+T supports up to 6A continuous output current in dual-phase (2Φ) mode, with thermal derating applied above +105°C junction temperature. Each internal power stage contributes 3A, and the device maintains 91% peak efficiency at 3.8VIN/1.1VOUT. The 30-bump WLP package's thermal resistance (θJA = 49.38°C/W) requires proper PCB copper pour and airflow planning for sustained 6A operation.
Does the MAX77541AAWV+T support prebiased startup, and why is this important?
Yes, the MAX77541AAWV+T supports prebiased startup, allowing safe turn-on when the output capacitor is already charged - common in hot-swap, multi-rail sequencing, or system wake-from-sleep scenarios. This prevents reverse current flow through the low-side MOSFET, avoiding potential damage or system instability. The MAX77541AAWV+T implements this via internal circuitry that monitors SNSx and disables gate drive until VOUT rises above a threshold.
How does the spread-spectrum modulation in the MAX77541AAWV+T reduce EMI?
The MAX77541AAWV+T uses triangular or pseudo-random spread-spectrum modulation to dither the switching frequency around its nominal value (0.5/1.0/1.6MHz), spreading energy across a wider bandwidth. This lowers peak radiated and conducted emissions by >10dB in the 100kHz–1GHz range, easing compliance with FCC Part 15 and CE EN55032 without additional shielding or filtering - especially valuable in compact VR headsets and handheld consoles.
Can the MAX77541AAWV+T operate with different input voltages on IN1 and IN2?
Yes, the MAX77541AAWV+T supports independent input supplies on IN1 and IN2, each rated for 2.2V to 5.5V. This enables flexible power architectures such as redundant input paths, separate battery/USB inputs, or optimized rail conditioning. However, both inputs share the same PGND1/PGND2 reference, and the device does not support true isolated dual-input operation - ground loops must be managed in system layout.
What protection features are integrated into the MAX77541AAWV+T?
The MAX77541AAWV+T integrates UVLO (2.2V rising threshold), thermal shutdown at +165°C (15°C hysteresis), short-circuit protection, overcurrent limiting with programmable thresholds (1.6–5.2A), and dedicated POKx outputs per channel. It also includes thermal warnings at +120°C and +140°C, reported via IRQB interrupt, enabling firmware-controlled throttling before shutdown.
MAX77541AAWV+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 30-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.2V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.3V
- Voltage - Output (Max):
- 5.2V
- Current - Output:
- 3A, 3A
- Frequency - Switching:
- 500kHz, 1MHz, 1.6MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 30-WLP (2.51x2.31)
MAX77541AAWV+T FAQ
1.How can I place an order for MAX77541AAWV+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX77541AAWV+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 MAX77541AAWV+T reliable?
The price and inventory of MAX77541AAWV+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX77541AAWV+T is usually 5 days.
3.What payment methods are accepted for MAX77541AAWV+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX77541AAWV+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX77541AAWV+T?
MAX77541AAWV+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX77541AAWV+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 MAX77541AAWV+T?
For technical support, including MAX77541AAWV+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX77541AAWV+T requirements.
6.How does Aetrix verify that MAX77541AAWV+T is sourced from the original manufacturer or authorized distributors?
All MAX77541AAWV+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 MAX77541AAWV+T meets industry standards.
7.What is the process for return or replacement of MAX77541AAWV+T?
All MAX77541AAWV+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX77541AAWV+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 MAX77541AAWV+T part is unused and in its original packaging.
Return procedure for MAX77541AAWV+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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