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Analog Devices Inc./Maxim Integrated MAX20412ATJA/V+T
- Part No.:
- MAX20412ATJA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
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MAX20412ATJA/V+T.pdf
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Product details
Overview
MAX20412ATJA/V+T from Maxim Integrated is a dual-channel, AEC-Q100 qualified synchronous step-down controller IC for automotive point-of-load regulation. It operates from 3.0V–5.5V input, delivers 0.25V–1.275V outputs with ±2% accuracy, supports up to 60A (OUT1 dual-phase) and 30A (OUT2), and features I²C-programmable voltage adjustment in 6.25mV steps - used in ADAS domain controllers and automotive SoC power rails.
For engineers reviewing the MAX20412ATJA/V+T datasheet, MAX20412ATJA/V+T pinout, MAX20412ATJA/V+T application, or MAX20412ATJA/V+T equivalent, key selection criteria include dual-phase scalability, 2.2MHz fixed-frequency PWM mode for EMI control, differential remote sensing for precision regulation, and automotive-grade thermal/overcurrent protection across -40°C to +125°C.
Technical Context
The MAX20412ATJA/V+T implements current-mode control with programmable compensation per channel, enabling stable operation with ceramic output capacitors. Its architecture supports independent enable, power-good, and current-sense inputs for each buck stage, plus phase-shifted operation (180° OUT2 relative to OUT1) to reduce input ripple.
It integrates dual 7-bit DACs for I²C-controlled output voltage (0.25V–1.275V), programmable soft-start and slew rates, and configurable skip/PWM/fixed-frequency modes. Spread-spectrum modulation and SYNC I/O allow system-level clock synchronization and radiated emissions reduction without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 5V rail and post-regulated supplies |
| Output Voltage Range | 0.25V to 1.275V in 6.25mV steps - supports modern low-voltage SoCs and processors |
| Output Accuracy | ±2% over load, line, and temperature - enables tight regulation without external trimming |
| Switching Frequency | 2.2MHz (or 1.1MHz) fixed PWM - allows all-ceramic designs and minimizes inductor size |
| Max Output Current | 60A on OUT1 (dual-phase), 30A on OUT2 - scalable for high-power automotive compute loads |
| Operating Temperature | -40°C to +125°C - qualified for under-hood and infotainment module environments |
| AEC-Q100 Grade | Grade 0 - certified for automotive safety-critical power delivery applications |
Pinout & Package
MAX20412ATJA/V+T is housed in a 32-pin, 5mm × 5mm TQFN package with exposed pad (EP = GND) for thermal dissipation. The package supports JEDEC-standard reflow and meets RoHS requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Analog ground reference | Separate from PGND1/PGND2; must be connected to low-noise analog ground plane |
| EN1 / EN2 (Pins 21, 5) | Active-high enable inputs | Independent digital control of each channel; tie low to disable unused output |
| PG1 / PG2 (Pins 26, 10) | Open-drain power-good outputs | Indicate regulation status after 120µs delay; require external pull-up resistors |
| RS1+/RS1- / RS2+/RS2- (Pins 23,22,7,6) | Differential remote sense inputs | Enable precise load-point regulation by compensating for PCB trace IR drop |
| CS1+/CS1- / CS2+/CS2- (Pins 25,24,9,8) | Current-sense differential inputs | Support DCR or resistor-based sensing; set peak current limit thresholds per channel |
| PWM1X (Pin 18) | Optional second-phase PWM output | Drives external phase controller (e.g., MAX15492B) for OUT1 dual-phase expansion |
| SCL / SDA (Pins 4, 3) | I²C serial interface | 3.4MHz max clock rate; supports dynamic voltage scaling and telemetry readback |
| SYNC (Pin 17) | Frequency synchronization I/O | Configurable as input (for master clock sync) or output (to daisy-chain other controllers) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent buck controllers | Each channel fully configurable via I²C - enables asymmetric voltage/current configurations for heterogeneous SoCs |
| Programmable spread-spectrum modulation | Reduces peak radiated EMI by spreading switching frequency energy - critical for automotive EMC compliance |
| 2.2MHz fixed-frequency PWM mode | Enables use of small, low-ESR ceramic capacitors and compact 80nH inductors - shrinks total solution size |
| Differential remote voltage sensing | Compensates for up to 100mV IR drop between regulator and load - ensures accurate core voltage at processor pins |
| Individual overtemperature and overcurrent protection | Thermal shutdown at 165°C with 15°C hysteresis; cycle-by-cycle current limiting prevents MOSFET failure during short circuits |
| I²C-controlled dynamic voltage scaling (DVS) | Adjusts output voltage in real time with programmable slew rate - supports processor DVFS for power optimization |
Applications
| ADAS Domain Controller Power | Automotive Infotainment SoC |
|---|---|
Use Scenario: Powers vision-processor SoC (e.g., NVIDIA Orin) requiring multiple tightly regulated rails (0.8V, 1.1V) with fast transient response. IC Role / Device Role / Timing Role: Dual-channel step-down controller delivering 60A (OUT1 dual-phase) and 30A (OUT2) with differential remote sensing and 2.2MHz PWM. Use Value: Maintains ±2% output accuracy across temperature and load transients, ensuring reliable SoC operation during camera fusion and neural network inference. |
Use Scenario: Supplies application processor and GPU in head-unit systems with strict EMI limits and thermal constraints. IC Role / Device Role / Timing Role: Automotive-grade DC-DC controller with spread-spectrum modulation and SYNC I/O for synchronized switching with display/audio subsystems. Use Value: Reduces radiated emissions below CISPR-25 Class 5 limits while supporting dynamic voltage scaling for thermal management. |
| Electric Vehicle Battery Management MCU | Automotive Radar Transceiver Supply |
Use Scenario: Regulates power for BMS microcontroller and isolated CAN/FlexRay interfaces in high-voltage battery packs. IC Role / Device Role / Timing Role: AEC-Q100 Grade 0 controller with individual EN/PG signals and -40°C to +125°C operation for under-hood deployment. Use Value: Ensures continuous MCU operation despite wide ambient temperature swings and electrical noise from nearby inverters. |
Use Scenario: Generates clean, low-noise 1.0V supply for 77GHz radar MMICs requiring ultra-low output ripple and fast load-step response. IC Role / Device Role / Timing Role: High-bandwidth current-mode controller with 35ns minimum on-time and programmable compensation for optimal loop stability. Use Value: Limits output voltage deviation to <±15mV during 10A load steps - preserves radar signal integrity and phase noise performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel automotive DC-DC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4332GLED-AEC1-Z | Single-channel 30A controller; no I²C interface; fixed 2.2MHz frequency only | Lacks dual-output capability and dynamic voltage scaling - suitable only for single-rail systems | Select when only one regulated rail is needed and I²C telemetry is unnecessary |
| TPS546D24RSAR | 60A single-channel PMBus controller; integrated MOSFETs; 0.5V–2.0V output range | Higher integration but limited to single output; lacks AEC-Q100 qualification and dual-phase flexibility | Select for space-constrained designs where integrated FETs reduce BOM count and PMBus suffices |
Compared with MPQ4332GLED-AEC1-Z and TPS546D24RSAR, the MAX20412ATJA/V+T uniquely provides two independently controllable, AEC-Q100 qualified channels with I²C-based DVS and dual-phase expansion - making it optimal for multi-rail automotive SoCs requiring both scalability and functional safety compliance.
Availability
MAX20412ATJA/V+T is available at Aetrix Electronics and suitable for automotive ADAS, infotainment, and battery management systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant power delivery.
Supply support for MAX20412ATJA/V+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
Maxim Integrated, now part of Analog Devices, designs high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets - emphasizing reliability, integration, and application-specific optimization.
The MAX20412ATJA/V+T belongs to Maxim's automotive power management portfolio, engineered specifically for low-voltage, high-current point-of-load regulation in safety-critical vehicle systems - with emphasis on EMI control, thermal robustness, and functional safety readiness.
FAQ
What is the maximum supported output current for each channel of the MAX20412ATJA/V+T?
The MAX20412ATJA/V+T supports up to 60A on OUT1 when configured in dual-phase mode using the PWM1X output to drive an external phase controller like the MAX15492B. OUT2 supports up to 30A in single-phase operation. Both channels maintain ±2% output accuracy across full load, line, and temperature ranges, and feature independent current-sense and protection circuitry.
Does the MAX20412ATJA/V+T support dynamic voltage scaling (DVS) via I²C?
Yes, the MAX20412ATJA/V+T supports full dynamic voltage scaling via its I²C interface. Each channel's output voltage can be adjusted from 0.25V to 1.275V in 6.25mV steps, with programmable slew rates to control ramp time. This enables real-time adaptation to processor DVFS states - a key requirement for automotive SoCs managing thermal and power budgets.
What package type and thermal characteristics does the MAX20412ATJA/V+T have?
The MAX20412ATJA/V+T uses a 32-pin TQFN package (5mm × 5mm) with exposed pad. Its junction-to-ambient thermal resistance (θJA) is 36°C/W on a multilayer board, and junction-to-case (θJC) is 3°C/W. The exposed pad must be soldered to a thermal pad tied to GND for effective heat dissipation - critical for sustained 60A operation in automotive under-hood environments.
Is the MAX20412ATJA/V+T AEC-Q100 qualified, and what grade does it meet?
Yes, the MAX20412ATJA/V+T is AEC-Q100 qualified and rated for Grade 0 operation (-40°C to +125°C ambient). It includes built-in overtemperature protection (trip at 165°C with 15°C hysteresis), cycle-by-cycle overcurrent limiting, and robust ESD tolerance - meeting automotive functional safety requirements for power delivery in ADAS and domain controller applications.
How does the MAX20412ATJA/V+T handle electromagnetic interference (EMI) in automotive systems?
The MAX20412ATJA/V+T reduces EMI through three integrated features: 2.2MHz fixed-frequency PWM operation (enabling small, low-ESR ceramic capacitors), programmable spread-spectrum frequency modulation (smearing spectral peaks), and SYNC I/O for system-level clock synchronization. These features collectively help meet stringent CISPR-25 Class 5 radiated emissions limits without external filters or shielding.
MAX20412ATJA/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
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- Voltage - Output (Min/Fixed):
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- Voltage - Output (Max):
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MAX20412ATJA/V+T FAQ
1.How can I place an order for MAX20412ATJA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20412ATJA/V+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 MAX20412ATJA/V+T reliable?
The price and inventory of MAX20412ATJA/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20412ATJA/V+T is usually 5 days.
3.What payment methods are accepted for MAX20412ATJA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20412ATJA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20412ATJA/V+T?
MAX20412ATJA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20412ATJA/V+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 MAX20412ATJA/V+T?
For technical support, including MAX20412ATJA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20412ATJA/V+T requirements.
6.How does Aetrix verify that MAX20412ATJA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20412ATJA/V+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 MAX20412ATJA/V+T meets industry standards.
7.What is the process for return or replacement of MAX20412ATJA/V+T?
All MAX20412ATJA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20412ATJA/V+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 MAX20412ATJA/V+T part is unused and in its original packaging.
Return procedure for MAX20412ATJA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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