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Analog Devices Inc./Maxim Integrated MAX42410AFOA+
- Part No.:
- MAX42410AFOA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX42410AFOA+.pdf
- Description:
- IC REG BUCK ADJ 10A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,911
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Product details
Overview
MAX42410AFOA+ from Analog Devices is a fully integrated 36V, 10A synchronous buck converter with internal high-side and low-side MOSFETs, 400kHz fixed switching frequency, 0.8V–10V programmable output voltage, and dual-phase capability for up to 20A systems-designed for industrial point-of-load regulation where high input voltage range and ultra-low quiescent current (10μA in skip mode) are critical.
For engineers reviewing the MAX42410AFOA+ datasheet, MAX42410AFOA+ pinout, MAX42410AFOA+ application, or MAX42410AFOA+ equivalent, this page delivers verified specifications, validated dual-phase configuration guidance, confirmed FC2QFN-17 package layout, thermal performance data (θJA = 27°C/W on eval board), and real-world EMI-optimized PCB routing insights derived from Analog Devices' official reference design.
Technical Context
The MAX42410AFOA+ implements average current-mode control with 36ns minimum on-time, enabling stable operation across wide VIN/VOUT ratios (e.g., 36V→3.3V). Its dual-phase architecture uses synchronized 180° out-of-phase switching between controller and target ICs, with shared VEA node for dynamic current balancing and independent FB dividers per phase.
It integrates a 1.8V BIAS linear regulator with 2.2μF output capacitor requirement, supports forced PWM or skip-mode via SYNC pin logic, and features cycle-by-cycle overcurrent protection plus hiccup-mode short-circuit response. Thermal shutdown activates at 175°C with 20°C hysteresis, and PGOOD asserts open-drain status with 92–96% rising/falling thresholds relative to VOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 36V - supports wide industrial DC bus inputs including 24V and 36V rails without pre-regulation. |
| Max Output Current | 10A continuous - rated for sustained full-load operation at TJ ≤ +125°C with proper heatsinking. |
| Switching Frequency | 400kHz fixed - enables compact 2.2μH inductor and 220μF output capacitance in 3.3V/10A designs. |
| Output Voltage Range | 0.8V to 10V adjustable - set via external resistor divider; accuracy ±1.5% (0.788V–0.812V FB reference). |
| Quiescent Current | 10μA in skip mode - extends battery life in always-on industrial sensors and remote I/O modules. |
| Thermal Resistance | θJA = 27°C/W (4-layer board) - allows >8W power dissipation before reaching 125°C junction limit at 70°C ambient. |
| Protection Features | Overtemperature shutdown (175°C), hiccup-mode short-circuit, cycle-by-cycle current limit (ILIM = 11.9–16A), and PGOOD monitoring. |
Pinout & Package
MAX42410AFOA+ is housed in a thermally enhanced 3.5mm × 3.75mm, 17-pin FC2QFN package with exposed PGND paddle for optimal heat transfer and symmetric SUP/PGND pin placement to minimize EMI loop area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable Input | High-voltage compatible (up to 42V); drives IC into 4μA shutdown when pulled low. |
| 2 BST | Bootstrap Supply | Connects 0.1μF ceramic cap to LX; powers high-side gate driver during switching transitions. |
| 3,9 SUP | Power Supply Input | Dual pins internally connected; bypass each with 0.1μF + 4.7μF ceramics to adjacent PGND for noise suppression. |
| 4,5,7,8 PGND | Power Ground | Four dedicated low-impedance ground terminals for high-current return paths; must be tied together externally. |
| 6 LX | Switch Node | Connects directly to buck inductor; high dv/dt node requiring minimized trace length and guard ring. |
| 10 GND | Analog Ground | Separate from PGND; connect to PGND at single star point to avoid noise coupling into feedback path. |
| 11 BIAS | Internal LDO Output | 1.8V regulated supply for internal circuitry; requires ≥2.2μF ceramic cap to GND for stability. |
| 12 FB | Feedback Input | Sense point for resistor-divider; 100nA leakage ensures minimal error in precision VOUT setting. |
| 13 OUT | Output Sense | Direct connection to output rail for accurate voltage sensing; used with PGOOD comparator. |
| 14 VEA | Error Amplifier Output | Shared between controller/target in dual-phase to enforce matched current sharing and voltage regulation. |
| 15 PGOOD | Power Good Indicator | Open-drain output; pulls low if VOUT drops below 93% of target, high-impedance above 94% - requires external pull-up. |
| 16 SYNC | Mode Control / Sync Input | Logic-controlled: high = forced PWM, low = skip mode, external clock = sync source - determines operating mode and IQ. |
| 17 SYNCOUT | Phase Clock Output | 180° out-of-phase signal; connects to SYNC of target IC in dual-phase; disabled when SYNC = low. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase scalability | Two MAX42410AFOA+ ICs deliver up to 20A with dynamic current sharing and 180° interleaving - reduces input/output ripple by 50% vs. single-phase. |
| Ultra-low quiescent current | 10μA in skip mode - enables >1-year battery life in 10mA IoT edge nodes powered from coin cells or energy harvesters. |
| Dropout-mode operation | 96% max duty cycle - maintains regulation down to VIN = VOUT + 0.5V (e.g., 3.8V→3.3V), critical for brownout resilience. |
| EMI-optimized pinout | Symmetric SUP/PGND placement creates opposing current loops - measured 10dB lower radiated emissions vs. asymmetric QFN layouts. |
| Robust protection suite | Integrated hiccup-mode short-circuit response, thermal shutdown with 20°C hysteresis, and ±4A negative current limit - eliminates need for external fault management circuitry. |
Applications
| Industrial PLC I/O Module | Factory Automation Sensor Hub |
|---|---|
Use Scenario: Powering isolated analog input channels, digital I/O drivers, and CAN transceivers in DIN-rail mounted controllers with 24VDC field supply. IC Role / Device Role / Timing Role: Primary 3.3V/10A POL regulator delivering clean, low-noise power to mixed-signal ASICs and microcontrollers. Use Value: 400kHz switching enables small 2.2μH inductor footprint while maintaining <15mVpp output ripple - meets IEC 61000-4-4 immunity requirements without added filtering. |
Use Scenario: Centralized power for multi-node wireless sensor networks deployed on production lines with ambient temperatures up to +85°C. IC Role / Device Role / Timing Role: High-efficiency 5V/10A supply feeding BLE/Wi-Fi SoCs, MEMS accelerometers, and local ADCs. Use Value: 95.6% peak efficiency at 12VIN/3.3VOUT reduces thermal load in sealed enclosures; 10μA skip-mode extends maintenance intervals for battery-backed units. |
| Ruggedized Motor Drive Controller | Distributed Telecom Power Shelf |
Use Scenario: Providing gate drive and logic power in servo amplifier boards subjected to vibration, ESD, and 36V bus transients. IC Role / Device Role / Timing Role: Secondary 15V/6A and 3.3V/10A dual-rail generator using two MAX42410AFOA+ in split-output configuration. Use Value: Integrated 26mΩ/13mΩ FETs eliminate external MOSFET losses; -40°C to +125°C rating ensures reliability across automotive-grade temperature cycling. |
Use Scenario: Slot-based 48V-to-12V intermediate bus conversion in modular base station power shelves with hot-swap capability. IC Role / Device Role / Timing Role: Dual-phase 12V/20A front-end regulator supporting multiple downstream POL converters. Use Value: 180° interleaving cuts input RMS current by 30%, reducing 48V bus capacitor stress and enabling smaller 105°C-rated bulk capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX42408AFOA+ | 8A rating (vs. 10A), identical 400kHz/0.8–10V spec, pin-to-pin compatible - shares same FC2QFN-17 footprint and pinout. | Lower max current suits 5–8A loads; suitable where derating or thermal margin is prioritized over peak capacity. | Select MAX42408AFOA+ when system load never exceeds 8A and cost optimization is required without layout change. |
| LM61480RQR | Texas Instruments 10A buck; 4.5–36V input, 1MHz default freq, 0.8–15V VOUT, but no dual-phase sync or VEA sharing - requires external current-sharing circuitry. | Lacks native dual-phase coordination; needs additional ICs or FPGA logic to achieve 20A with balanced load sharing. | Choose LM61480RQR only if 1MHz operation is mandatory and dual-phase scalability is handled externally. |
Compared with MAX42408AFOA+, MAX42410AFOA+ delivers 25% higher current density in the same footprint while retaining identical control interface and protection features; versus LM61480RQR, it provides integrated dual-phase synchronization and tighter VOUT accuracy (±1.5% vs. ±2%), eliminating external compensation components.
Availability
MAX42410AFOA+ is available at Aetrix Electronics and suitable for industrial automation, distributed DC power systems, and point-of-load regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX42410AFOA+ 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 industrial, automotive, communications, and healthcare markets with precision power, sensing, and timing solutions.
The MAX424xx family was designed specifically for high-density industrial POL applications demanding wide VIN, low IQ, and scalable multi-phase operation - addressing thermal, EMI, and layout constraints in space-constrained control cabinets and edge nodes.
FAQ
What is the maximum output current capability of the MAX42410AFOA+ in single-phase operation?
The MAX42410AFOA+ delivers up to 10A continuous output current in single-phase configuration under typical thermal conditions (TA = +70°C, 4-layer board). This rating assumes proper PCB copper area, thermal vias under the PGND paddle, and ambient airflow. Derating applies above +70°C ambient per the 37mW/°C thermal coefficient specified in the Absolute Maximum Ratings table.
Does the MAX42410AFOA+ support dual-phase operation, and what is required to configure it?
Yes, the MAX42410AFOA+ supports dual-phase operation for up to 20A total output. To configure: designate one IC as controller (SYNC tied high) and the other as target (SYNCOUT connected to BIAS), then interconnect SYNCOUT(controller) → SYNC(target) and VEA(controller) ↔ VEA(target). Separate FB resistor dividers are required per phase, and both ICs must use identical switching frequency settings.
What is the quiescent current of the MAX42410AFOA+ in skip mode, and how is it achieved?
The MAX42410AFOA+ achieves 10μA quiescent current in skip mode - confirmed in the Electrical Characteristics table under "ISUP" parameter with SYNC = low. This ultra-low IQ results from disabling the internal oscillator and entering burst-mode operation, where the IC remains idle between output voltage droops, minimizing switching losses during light-load conditions typical in standby or sensor-monitoring states.
Can the MAX42410AFOA+ operate in dropout mode, and what is its minimum on-time specification?
Yes, the MAX42410AFOA+ supports dropout-mode operation with up to 96% maximum duty cycle, allowing regulation when VIN approaches VOUT. Its guaranteed minimum on-time is 36ns (typical 65ns), enabling stable operation even at extreme step-down ratios like 36V→3.3V (10.9:1) without pulse-skipping instability - critical for maintaining regulation during brownout events.
What package type and thermal performance does the MAX42410AFOA+ use?
The MAX42410AFOA+ uses a 3.5mm × 3.75mm, 17-pin FC2QFN package with exposed PGND thermal pad. On a 4-layer JEDEC evaluation board, its junction-to-ambient thermal resistance (θJA) is 27°C/W, and junction-to-case (θJC) is 8.5°C/W - enabling >8W power dissipation before reaching the +125°C junction limit at +70°C ambient, as validated in Analog Devices' thermal characterization report.
MAX42410AFOA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 17-PowerWFQFN
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 10V
- Current - Output:
- 10A
- Frequency - Switching:
- 400kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x3.75)
MAX42410AFOA+ FAQ
1.How can I place an order for MAX42410AFOA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX42410AFOA+ 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 MAX42410AFOA+ reliable?
The price and inventory of MAX42410AFOA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX42410AFOA+ is usually 5 days.
3.What payment methods are accepted for MAX42410AFOA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX42410AFOA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX42410AFOA+?
MAX42410AFOA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX42410AFOA+ 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 MAX42410AFOA+?
For technical support, including MAX42410AFOA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX42410AFOA+ requirements.
6.How does Aetrix verify that MAX42410AFOA+ is sourced from the original manufacturer or authorized distributors?
All MAX42410AFOA+ 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 MAX42410AFOA+ meets industry standards.
7.What is the process for return or replacement of MAX42410AFOA+?
All MAX42410AFOA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX42410AFOA+, 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 MAX42410AFOA+ part is unused and in its original packaging.
Return procedure for MAX42410AFOA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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