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Analog Devices Inc./Maxim Integrated MAX20499BFOM/VY+T
- Part No.:
- MAX20499BFOM/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20499BFOM/VY+T.pdf
- Description:
- IC REG BUCK PROG 12A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX20499BFOM/VY+T from Analog Devices is a Grade 1 automotive AEC-Q100 qualified synchronous step-down DC-DC converter delivering up to 12A peak output current, operating from 3.0V–5.5V input to 0.5V–1.275V output with ±1.5% voltage accuracy over load/line/temperature, and featuring I²C-controlled dynamic voltage scaling for SoC core power regulation in infotainment systems.
For engineers reviewing the MAX20499BFOM/VY+T datasheet, MAX20499BFOM/VY+T pinout, MAX20499BFOM/VY+T application, or MAX20499BFOM/VY+T equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and protection specs, and real-world selection guidance for point-of-load power delivery in safety-critical vehicle subsystems.
Technical Context
The MAX20499BFOM/VY+T implements current-mode forced-PWM control with 2.2MHz fixed-frequency operation (configurable to 1.1MHz), integrated high-side (8mΩ) and low-side (4mΩ) MOSFETs, and differential remote sensing (RS+/RS−) for precise load-point regulation. Its internal 8-bit DAC enables 6.25mV-step I²C voltage programming across the full 0.5V–1.275V range.
It integrates spread-spectrum modulation to reduce EMI, programmable soft-start and DVS slew rate, overcurrent protection with 15–22A current-limit threshold (B variant), and thermal shutdown at +165°C with 15°C hysteresis - all within a -40°C to +125°C ambient operating range compliant with automotive Grade 1 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 12A peak - supports high-power SoC cores without external current boosting. |
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 3.3V/5V rails and battery-supervised supplies. |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - fine-grained I²C programmability for dynamic voltage scaling. |
| Voltage Accuracy | ±1.5% over load/line/temperature - ensures stable core supply under transient and thermal stress. |
| Switching Frequency | 2.2MHz (default) or 1.1MHz - enables compact all-ceramic filter design and fast transient response. |
| Package | 3.5mm × 3.75mm, 17-pin side-wettable FC2QFN - supports automated optical inspection and high-reliability automotive reflow. |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C) - qualified for under-hood and in-cabin automotive applications. |
Pinout & Package
MAX20499BFOM/VY+T uses a 3.5mm × 3.75mm, 17-pin side-wettable FC2QFN package (package code F173A3FY+2) with exposed thermal pad, optimized for automotive thermal cycling and solder-joint reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Active-high enable input | Starts soft-start sequence on rising edge; initiates controlled shutdown on falling edge. |
| BST | Bootstrap capacitor connection | Provides gate-drive voltage for high-side MOSFET; requires 0.1µF ceramic capacitor to LX. |
| PV (pins 3, 9, 15) | Power input supply | Dual-path 3.0V–5.5V input rail; each PV pin must be connected to shared 10µF+ ceramic decoupling. |
| PGND (pins 4, 5, 7, 8, 10, 11, 16) | Power ground | Low-impedance return for high-current switching path; multiple pins minimize IR drop and EMI. |
| LX (pin 6) | Switch node | Connects to inductor's switched side; carries full AC ripple current; requires tight layout to PGND. |
| RS+, RS− | Differential remote sense inputs | Enable Kelvin sensing at load to reject PCB IR drop; critical for <1% output regulation error. |
| SYNC | Sync I/O | Configurable as input (for external clock synchronization) or output (for multi-phase master clock). |
| RESET | Open-drain power-good output | Asserts low until VOUT reaches regulation; requires external pull-up for logic-level signaling. |
| GND (pin 14) | Analog ground | Reference for internal analog blocks; isolated from PGND to suppress switching noise coupling. |
| AV (pin 15) | Analog supply | Provides clean 3.0V–5.5V bias for internal references and ADCs; decoupled separately from PV. |
| SDA, SCL | I²C interface | Supports up to 1MHz clock; 7-bit address range 0x38–0x3F; open-drain SDA requires ≥500Ω pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | Compensates for PCB trace resistance up to 20mΩ, maintaining ±1.5% regulation at point-of-load. |
| Spread-spectrum modulation | Reduces peak radiated EMI by >10dB across 100kHz–1GHz band without compromising efficiency. |
| Programmable compensation | Allows loop stability tuning via I²C register writes to match diverse output capacitor ESR/ESL profiles. |
| Overtemperature protection | Thermal shutdown at +165°C with 15°C hysteresis prevents latch-up during sustained overload or airflow loss. |
| Factory-preset + I²C override | Ships with default VOUT setting but allows runtime adjustment - enabling one BOM for multiple SoC voltage requirements. |
Applications
| Automotive Infotainment Power | SoC Core Supply |
|---|---|
Use Scenario: Powers application processors and GPU cores in head-unit systems requiring dynamic voltage scaling during video decode or AI inference. IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated 0.7V–1.1V core voltage with sub-10µs transient recovery. Use Value: Enables >20% power savings via DVS while maintaining AEC-Q100 compliance and meeting ISO 11452-2 EMI limits. | Use Scenario: Supplies CPU clusters in ADAS domain controllers where rapid load steps occur during sensor fusion processing. IC Role / Device Role / Timing Role: High-bandwidth point-of-load regulator with 2.2MHz PWM and differential sensing for <1% droop under 8A/µs load transients. Use Value: Eliminates need for external current monitors or secondary LDOs, reducing BOM count and board area by 35%. |
| ADAS Camera Module Supply | Telematics Control Unit (TCU) PMIC Subsystem |
Use Scenario: Provides clean, low-noise 1.0V supply to image signal processors in rear-view and surround-view camera ECUs. IC Role / Device Role / Timing Role: Low-EMI buck converter using spread-spectrum mode and all-ceramic output filtering to avoid interference with MIPI CSI-2 signals. Use Value: Meets CISPR 25 Class 5 radiated emissions without ferrite beads or shielding cans, cutting system cost by $0.42/unit. | Use Scenario: Generates 0.85V core rail for LTE/5G modems and secure boot microcontrollers in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: Automotive-grade buck with RESET output synchronized to power-on reset timing and I²C-configurable soft-start delay. Use Value: Ensures deterministic boot sequencing across temperature extremes, eliminating field-reported boot failures above +105°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436-AEC1 | 8A rated, 2.2MHz, no I²C interface, fixed-output or resistor-programmed only | Lacks dynamic voltage scaling and remote sensing; suitable for static-core applications only | Select when I²C control and DVS are unnecessary and cost sensitivity outweighs feature flexibility. |
| TPS62933-Q1 | 3A rated, 2.2MHz, I²C-compatible but no spread-spectrum or differential sensing | Lower current capacity and missing EMI-reduction features limit use to low-power MCU rails | Choose only for auxiliary 3.3V/1.8V rails where MAX20499BFOM/VY+T's 12A capability is over-specified. |
Compared with MPQ4436-AEC1 and TPS62933-Q1, the MAX20499BFOM/VY+T uniquely combines 12A capability, I²C-programmable DVS, differential remote sensing, and spread-spectrum EMI reduction - making it the sole option for high-performance, thermally constrained automotive SoC core supplies requiring both precision regulation and regulatory compliance.
Availability
MAX20499BFOM/VY+T is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply with full AEC-Q100 Grade 1 qualification and long-term production support.
Supply support for MAX20499BFOM/VY+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, serving automotive, industrial, communications, and healthcare markets with robust, reliable components.
The MAX20499 family is designed specifically for automotive point-of-load power delivery, targeting high-current SoC core regulation with integrated diagnostics, EMI mitigation, and functional safety-ready features.
FAQ
What is the maximum output current capability of the MAX20499BFOM/VY+T?
The MAX20499BFOM/VY+T delivers up to 12A peak output current, confirmed by its MAX20499B variant designation and electrical characteristics table showing 15–22A current-limit thresholds. This rating is valid across the full −40°C to +125°C ambient temperature range and supports continuous operation at 12A with appropriate PCB thermal design per the four-layer board θJA = 26°C/W specification.
Does the MAX20499BFOM/VY+T support dynamic voltage scaling (DVS)?
Yes, the MAX20499BFOM/VY+T supports I²C-controlled dynamic voltage scaling with programmable slew rates. Its 8-bit DAC enables output voltage adjustment from 0.5V to 1.275V in precise 6.25mV steps, and the DVS rate is configurable via register writes - a key feature explicitly documented in the "Dynamic Voltage Scaling" section of the datasheet.
What package type and pin count does the MAX20499BFOM/VY+T use?
The MAX20499BFOM/VY+T uses a 3.5mm × 3.75mm, 17-pin side-wettable FC2QFN package (outline number 21-100263, land pattern 90-100088). This package is AEC-Q100 qualified and features multiple PGND and PV pins for low-inductance power delivery and enhanced thermal performance in automotive environments.
Is the MAX20499BFOM/VY+T AEC-Q100 qualified, and what grade does it meet?
Yes, the MAX20499BFOM/VY+T is AEC-Q100 qualified and meets Grade 1 requirements, supporting operation from −40°C to +125°C ambient temperature. This qualification is explicitly stated in the "Benefits and Features" section and reinforced by thermal specifications including junction-to-ambient θJA = 26°C/W on four-layer boards and 150°C max junction temperature.
What protection features are integrated into the MAX20499BFOM/VY+T?
The MAX20499BFOM/VY+T integrates overcurrent protection (with 15–22A current-limit threshold), overtemperature protection (shutdown at +165°C with 15°C hysteresis), input UVLO (2.45V–2.9V range), and output overvoltage/undervoltage monitoring with 15µs propagation delay. All protections are fully documented in the Electrical Characteristics table and "Detailed Description" section.
MAX20499BFOM/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 17-PowerWFQFN
- 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):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 1.275V
- Current - Output:
- 12A
- Frequency - Switching:
- 1.1MHz, 2.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x3.75)
MAX20499BFOM/VY+T FAQ
1.How can I place an order for MAX20499BFOM/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20499BFOM/VY+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 MAX20499BFOM/VY+T reliable?
The price and inventory of MAX20499BFOM/VY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20499BFOM/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20499BFOM/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20499BFOM/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20499BFOM/VY+T?
MAX20499BFOM/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20499BFOM/VY+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 MAX20499BFOM/VY+T?
For technical support, including MAX20499BFOM/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20499BFOM/VY+T requirements.
6.How does Aetrix verify that MAX20499BFOM/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20499BFOM/VY+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 MAX20499BFOM/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20499BFOM/VY+T?
All MAX20499BFOM/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20499BFOM/VY+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 MAX20499BFOM/VY+T part is unused and in its original packaging.
Return procedure for MAX20499BFOM/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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