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Analog Devices Inc./Maxim Integrated MAX20499CAFOA/VY+T
- Part No.:
- MAX20499CAFOA/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20499CAFOA/VY+T.pdf
- Description:
- IC REG BUCK PROG 16A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,543
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Product details
Overview
MAX20499CAFOA/VY+T from Analog Devices is an automotive-grade, synchronous step-down DC-DC converter delivering up to 16A peak output current, operating from 3.0V–5.5V input to 0.5V–1.275V output in 6.25mV steps, with ±1.5% output voltage accuracy over load/line/temperature, and integrated low-RDS(ON) FETs (6.8mΩ HS / 4mΩ LS), designed for SoC core power in automotive entertainment systems.
For engineers reviewing the MAX20499CAFOA/VY+T datasheet, MAX20499CAFOA/VY+T pinout, MAX20499CAFOA/VY+T application, or MAX20499CAFOA/VY+T equivalent, this page delivers verified technical context, I²C-programmable voltage scaling, 2.2MHz fixed-frequency PWM operation, differential remote sensing, and Grade 1 automotive (-40°C to +125°C) thermal performance - all critical for point-of-load regulation in safety-conscious vehicle subsystems.
Technical Context
The MAX20499CAFOA/VY+T implements a current-mode, forced-PWM control architecture with programmable compensation and internal 8-bit DAC for dynamic voltage scaling. Its 2.2MHz switching frequency enables compact all-ceramic filter design and fast load-transient response, while spread-spectrum modulation reduces EMI without compromising regulation stability.
Differential remote sensing (RS+/RS−) compensates for PCB IR drop across high-current paths, and the integrated RESET output provides programmable power-good timing. The device supports synchronization via SYNC pin and features factory-preset output voltage with I²C reconfiguration capability - enabling adaptive core voltage management in multi-rail automotive SoC platforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 16A peak - supports high-power SoC cores without external current boosting or parallel stages. |
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 3.3V/5V supply rails and battery-backed pre-regulators. |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - enables precise, fine-grained DVFS for ARM/Cortex-A automotive processors. |
| Switching Frequency | 2.2MHz (fixed) - allows use of small 70nH inductors and avoids AM radio band interference. |
| Voltage Accuracy | ±1.5% over load/line/temperature - ensures stable core voltage under transient load changes and thermal cycling. |
| Package | 3.5mm × 4mm, 17-pin FC2QFN with side-wettable leads - supports automated optical inspection (AOI) and high-reliability automotive solder joint validation. |
| Operating Temperature | -40°C to +125°C (Grade 1 automotive) - qualified for under-hood and infotainment module mounting locations. |
Pinout & Package
MAX20499CAFOA/VY+T uses a 3.5mm × 4mm, 17-pin FC2QFN package (package code F173A4FY+1) with exposed pad internally connected to PV. Side-wettable leads enable reliable solder-joint inspection per AEC-Q200 requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Active-high enable input | Controls soft-start initiation and graceful shutdown; logic-compatible with 1.3V min VIH for MCU GPIO interfacing. |
| BST | Bootstrap supply for high-side FET gate drive | Requires 0.1µF ceramic capacitor to LX; enables efficient 100% duty-cycle operation during low-VOUT regulation. |
| PV (pins 3,9,16) | Main power input supply | Multiple pins reduce impedance; requires ≥10µF ceramic per pin to PGND for stable high-current switching. |
| PGND (pins 4,5,7,8,11,12) | Power ground return path | 6 dedicated PGND pins minimize ground bounce and improve EMI performance at 16A peak currents. |
| LX | Switch node connection | Connects directly to inductor; shared across pins 6 and 13 for low-inductance, high-current routing. |
| RS+, RS− | Differential remote sense inputs | Enable accurate VOUT regulation at load point; RS+ input draws only 100µA, minimizing trace error contribution. |
| SYNC | Frequency synchronization I/O | Configurable as input (for system clock alignment) or open-drain output (to daisy-chain multiple converters). |
| RESET | Open-drain power-good output | Asserts low until regulated; hold time configurable via register (default 3.7ms) - synchronizes downstream power sequencing. |
| SDA/SCL | I²C bidirectional data/clock | Supports up to 1MHz clock; includes noise spike suppression and no clock stretching - simplifies real-time firmware control. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 6.8mΩ/4mΩ FETs | Eliminates external MOSFETs and gate drivers, reducing BOM count and layout area by >30% vs discrete solutions. |
| 2.2MHz fixed-frequency PWM | Enables <100ns load-step response and eliminates audible noise; supports compact 70nH inductors with minimal footprint. |
| I²C programmable VOUT | Permits runtime DVFS in automotive ADAS/infotainment SoCs without hardware modification or re-spinning PCBs. |
| Differential remote sensing | Compensates for up to 2Ω trace resistance between regulator and load, maintaining ±1.5% regulation at 16A output. |
| Spread-spectrum modulation | Reduces peak radiated emissions by >10dB at fundamental switching frequency - aids CISPR 25 Class 5 compliance. |
| Grade 1 automotive qualification | Validated for continuous operation at TJ = +125°C (95,000 hrs) and +150°C (5,000 hrs), meeting AEC-Q100 reliability standards. |
Applications
| Automotive Infotainment SoC Core Power | ADAS Domain Controller VDDCORE |
|---|---|
|
Use Scenario: Powers quad-core ARM Cortex-A76 processor in head-unit with dynamic frequency scaling. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 0.8V @ 12A with 2.2MHz PWM and I²C-adjusted voltage during performance modes. Use Value: Enables sub-10µs load-step recovery and ±1.5% output accuracy across -40°C to +125°C cabin temperature swings. |
Use Scenario: Supplies vision-processor core in front-camera ECU requiring tight voltage tolerance and low EMI. IC Role / Device Role / Timing Role: Synchronous buck converter with differential remote sensing and spread-spectrum operation to meet CISPR 25 Class 5 limits. Use Value: Maintains 0.75V output at 14A with <5mV droop during 8A/µs transients, eliminating need for secondary LDO post-regulation. |
| Telematics Control Unit (TCU) Application Processor | Automotive Digital Cluster GPU Core Rail |
|
Use Scenario: Regulates application processor voltage in LTE-connected TCU with thermal throttling coordination. IC Role / Device Role / Timing Role: I²C-configurable buck converter with programmable soft-start and RESET assertion for safe boot sequencing. Use Value: Supports dynamic voltage/frequency scaling via 6.25mV resolution steps, reducing active power by up to 22% at partial load. |
Use Scenario: Delivers GPU core voltage in digital instrument cluster with high-current pulses during animation rendering. IC Role / Device Role / Timing Role: High-efficiency 16A buck with 3.5mm × 4mm FC2QFN package enabling dense layout in space-constrained dash modules. Use Value: Achieves >92% efficiency at 1.0V/10A with integrated FETs, lowering thermal load and eliminating external heatsink requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current automotive buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436-AEC1 | 12A peak, 2.2MHz, no I²C interface, fixed-output variants only | Lacks dynamic voltage scaling; requires external resistor network for VOUT setting | Preferred when fixed-voltage, lower-cost solution suffices and DVFS is not required. |
| TPS62480QRVCTQ1 | 12A peak, 2.4MHz, I²C interface, but no differential remote sensing or spread-spectrum | Higher EMI risk in sensitive RF zones; less accurate load-point regulation due to single-point sensing | Consider where ultra-fast transient response is prioritized over EMI and precision, e.g., non-RF-adjacent modules. |
Compared with MPQ4436-AEC1 and TPS62480QRVCTQ1, the MAX20499CAFOA/VY+T uniquely combines 16A capability, I²C-based DVFS, differential remote sensing, and spread-spectrum EMI reduction - making it the only option qualified for high-accuracy, high-dynamic-range SoC core regulation in modern automotive infotainment and ADAS domains.
Availability
MAX20499CAFOA/VY+T is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS domain controllers, and telematics control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MAX20499CAFOA/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, precision power and signal chain solutions.
The MAX20499 series belongs to Analog Devices' automotive power management portfolio, engineered specifically for high-current, low-voltage SoC core regulation in safety-critical vehicle subsystems - emphasizing thermal resilience, EMI control, and functional safety-ready features.
FAQ
What is the maximum output current rating for the MAX20499CAFOA/VY+T?
The MAX20499CAFOA/VY+T is rated for up to 16A peak output current, validated across the full -40°C to +125°C automotive temperature range. This rating reflects its optimized 6.8mΩ high-side and 4mΩ low-side integrated FETs, enabling sustained high-current delivery without external current-sharing circuitry. Derating applies above +70°C ambient based on θJA = 35.4°C/W.
Does the MAX20499CAFOA/VY+T support dynamic voltage scaling (DVS)?
Yes, the MAX20499CAFOA/VY+T supports full dynamic voltage scaling via its I²C interface, allowing real-time adjustment of output voltage from 0.5V to 1.275V in precise 6.25mV steps. This capability is implemented using an internal 8-bit DAC and programmable slew rate control, enabling seamless integration with automotive SoC DVFS engines for power optimization.
What package type and pin count does the MAX20499CAFOA/VY+T use?
The MAX20499CAFOA/VY+T uses a 3.5mm × 4mm, 17-pin FC2QFN package (package code F173A4FY+1) with side-wettable leads. It features 6 dedicated PGND pins, dual LX connections, and separate AV/GND/RS+/RS− pins to ensure signal integrity and thermal performance in high-current automotive applications.
How does the MAX20499CAFOA/VY+T handle electromagnetic interference (EMI)?
The MAX20499CAFOA/VY+T incorporates spread-spectrum frequency modulation (SSFM) to reduce peak radiated emissions by >10dB at the fundamental switching frequency. Combined with 2.2MHz fixed-frequency operation, differential remote sensing, and optimized pin layout (including multiple PGND and PV pins), it meets CISPR 25 Class 5 requirements without requiring external EMI filters in most automotive layouts.
Is the MAX20499CAFOA/VY+T qualified for automotive Grade 1 temperature operation?
Yes, the MAX20499CAFOA/VY+T is fully qualified for Grade 1 automotive operation (-40°C to +125°C ambient), with junction temperature validated for continuous operation at +125°C (95,000 hours) and +150°C (5,000 hours). It complies with AEC-Q100 stress testing requirements and is manufactured in IATF 16949-certified facilities.
MAX20499CAFOA/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:
- 16A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x4)
MAX20499CAFOA/VY+T FAQ
1.How can I place an order for MAX20499CAFOA/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20499CAFOA/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 MAX20499CAFOA/VY+T reliable?
The price and inventory of MAX20499CAFOA/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 MAX20499CAFOA/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20499CAFOA/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20499CAFOA/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20499CAFOA/VY+T?
MAX20499CAFOA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20499CAFOA/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 MAX20499CAFOA/VY+T?
For technical support, including MAX20499CAFOA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20499CAFOA/VY+T requirements.
6.How does Aetrix verify that MAX20499CAFOA/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20499CAFOA/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 MAX20499CAFOA/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20499CAFOA/VY+T?
All MAX20499CAFOA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20499CAFOA/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 MAX20499CAFOA/VY+T part is unused and in its original packaging.
Return procedure for MAX20499CAFOA/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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