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Analog Devices Inc./Maxim Integrated MAX20419ATGH/V+
- Part No.:
- MAX20419ATGH/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGH/V+.pdf
- Description:
- IC REG BUCK BST 0.8V 3.6A 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,132
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Product details
Overview
MAX20419ATGH/V+ from Analog Devices is a high-efficiency, 3-output automotive-grade DC-DC converter IC integrating one synchronous boost (5V/750mA) and two synchronous buck regulators (0.8V–3.8V/3.6A each), with ±1.4% output voltage accuracy on buck outputs and ±1.9% on boost, 2.2MHz fixed-frequency PWM operation, and ASIL-C compliance for ADAS power systems.
For engineers reviewing the MAX20419ATGH/V+ datasheet, MAX20419ATGH/V+ pinout, MAX20419ATGH/V+ application, or MAX20419ATGH/V+ equivalent, key selection considerations include factory-preset output voltages, individual RESET outputs, programmable windowed watchdog, input overvoltage detection, and fail-safe behavior on open pins in safety-critical SoC and infotainment power rails.
Technical Context
The MAX20419ATGH/V+ implements current-mode control across all three regulators, supporting forced-PWM, skip-mode, and true shutdown to optimize efficiency across load conditions. Its 2.2MHz switching frequency enables all-ceramic external components and reduces EMI through integrated spread-spectrum modulation.
Redundant internal reference, shorted-pin detection on RESET1–RESET3, and PV OV monitoring provide diagnostic coverage required for ASIL-C system integration. The IC operates across –40°C to +125°C and accepts 3.0V–5.5V input, targeting single-rail automotive battery-fed domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | 1x boost (5V fixed), 2x buck (0.8V–3.8V, factory preset in 25mV steps) |
| Max Output Current | OUT1: 750mA; OUT2/OUT3: 3.6A each |
| Voltage Accuracy | ±1.9% (OUT1), ±1.4% (OUT2/OUT3) over line/load/temp |
| Switching Frequency | 2.2MHz fixed, with spread-spectrum modulation to reduce radiated emissions |
| Operating Temp Range | –40°C to +125°C, qualified per AEC-Q100 Grade 0 |
| Protections | Overcurrent, overtemperature, input overvoltage, open-pin fail-safe, shorted-pin detection on RESET outputs |
| Safety Compliance | ASIL-C compliant with redundant reference and diagnostic features |
Pinout & Package
MAX20419ATGH/V+ is housed in a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (pin 24 = GND_EP). Pin functions are validated per Analog Devices' MAX20419 datasheet Rev 17.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Enable inputs for OUT1, OUT2, OUT3 | Independent control of each regulator's startup/shutdown sequence |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Individual power-good signals with shorted-pin detection capability |
| WDI, WDS | Watchdog interface | Programmable windowed watchdog input and status output for fault containment |
| PV, PV_OV | Main supply input and OV monitor | PV accepts 3.0V–5.5V input; PV_OV asserts on overvoltage condition |
| LX1–LX3 | Switch node outputs | Connect to external inductors; LX1 drives boost, LX2/LX3 drive bucks |
| PGND1–PGND3 | Power ground returns | Separated ground paths per regulator to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Factory-configurable buck outputs | 0.8V–3.8V in 25mV increments eliminates external feedback resistors and saves board space |
| Individual RESET outputs | Enables independent power sequencing and fault isolation per rail in multi-domain SoCs |
| Programmable windowed watchdog | Provides time-bound fault detection and automatic recovery without host MCU intervention |
| Fail-safe on open pins | Prevents unsafe state propagation by disabling affected regulator if enable or feedback pin opens |
| Spread-spectrum modulation | Reduces peak radiated EMI by >10dB without requiring additional filtering components |
Applications
| Radar Sensor Power Supply | ADAS Domain Controller Core Rail |
|---|---|
Use Scenario: Powers millimeter-wave radar transceivers requiring clean, tightly regulated 1.0V and 1.8V core supplies alongside 5V analog bias. IC Role / Device Role / Timing Role: Dual buck regulators deliver precise low-noise core voltages; boost supplies 5V analog rail with fast transient response. Use Value: ±1.4% output accuracy and excellent load-transient performance ensure stable RF front-end operation under dynamic beamforming loads. | Use Scenario: Supplies heterogeneous SoC clusters (CPU, GPU, NPU) with independent, sequenced, and monitored voltage rails. IC Role / Device Role / Timing Role: Three regulated outputs with individual EN/RESET pins enable safe, deterministic power-up/down sequencing per domain. Use Value: ASIL-C diagnostics-including open-pin fail-safe and shorted-pin detection-support functional safety requirements for ISO 26262-compliant domain controllers. |
| Automotive Infotainment SoC | Camera Module Power Management |
Use Scenario: Delivers 0.85V CPU core, 1.1V GPU, and 5V USB/PCIe interface power from a 3.3V or 5V vehicle bus. IC Role / Device Role / Timing Role: Factory-preset buck outputs eliminate trimming; boost provides isolated 5V for high-speed interfaces. Use Value: 2.2MHz operation allows compact 0.47µH inductors and all-ceramic capacitors, reducing solution footprint by >30% vs. lower-frequency alternatives. | Use Scenario: Powers image signal processor (ISP), sensor analog front-end, and MIPI PHY in surround-view camera modules. IC Role / Device Role / Timing Role: Buck regulators supply ISP core and I/O; boost provides 5V for lens actuator and LED flash drivers. Use Value: Input overvoltage detection (PV_OV) and thermal shutdown protect against load-dump transients common in 12V automotive camera harnesses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6594121RWER | 4-buck + 1-boost configuration; supports higher max current (4A buck); no integrated windowed watchdog | Targets larger ADAS SoCs requiring >3.6A per rail; lacks ASIL-C diagnostic coverage on RESET pins | Preferred when higher current headroom is needed and watchdog functionality is handled externally |
| MPQ4333GQ-AEC1 | Dual buck only (no boost); 3.5A per channel; no ASIL-C certification or redundancy features | Suitable for cost-sensitive infotainment subsystems where 5V boost is supplied separately | Select when only dual-core-rail regulation is required and functional safety is not mandated |
Compared with TPS6594121RWER and MPQ4333GQ-AEC1, the MAX20419ATGH/V+ uniquely integrates boost + dual buck + ASIL-C diagnostics in a 4mm × 4mm footprint, enabling single-chip power for compact radar and camera ECUs without external safety monitors.
Availability
MAX20419ATGH/V+ is available at Aetrix Electronics and suitable for advanced driver-assistance systems (ADAS), automotive infotainment, and SoC power management requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.
Supply support for MAX20419ATGH/V+ 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.
The MAX20419 belongs to Analog Devices' automotive power management IC portfolio, designed specifically to consolidate multiple voltage rails and safety diagnostics into single-package solutions for ASIL-C–compliant ADAS and infotainment ECUs.
FAQ
What is the factory-preset output voltage configuration for MAX20419ATGH/V+?
The MAX20419ATGH/V+ has OUT1 factory-set to 5.0V (boost), while OUT2 and OUT3 are preset to specific voltages within the 0.8V–3.8V range in 25mV steps - exact values depend on the orderable variant suffix. This configuration eliminates external feedback resistors and ensures consistent performance without calibration. Always verify the specific output voltages using the ordering guide in the official MAX20419 datasheet Rev 17.
Does MAX20419ATGH/V+ support independent power sequencing?
Yes, MAX20419ATGH/V+ supports independent power sequencing via dedicated EN1, EN2, and EN3 pins, allowing controlled startup and shutdown of each output. Combined with individual RESET1–RESET3 outputs, it enables deterministic, fault-isolated sequencing for multi-domain SoCs. This capability is essential for meeting boot-order requirements in ADAS domain controllers and avoids cross-rail interference during state transitions.
Is MAX20419ATGH/V+ qualified for automotive applications?
Yes, MAX20419ATGH/V+ is AEC-Q100 Grade 0 qualified (–40°C to +125°C) and designed for automotive use. It includes ASIL-C–compliant diagnostics such as redundant reference, open-pin fail-safe, shorted-pin detection on RESET outputs, and input overvoltage monitoring - all verified per ISO 26262 requirements for safety-related systems in ADAS and infotainment ECUs.
What protection features does MAX20419ATGH/V+ include?
MAX20419ATGH/V+ integrates overcurrent protection (OCP), overtemperature protection (OTP), input overvoltage detection (PV_OV), open-pin fail-safe behavior, and shorted-pin detection on RESET1–RESET3 outputs. These protections operate autonomously without host intervention and are part of its ASIL-C safety architecture. The IC also features soft-start and true shutdown to prevent inrush current and leakage during standby.
Can MAX20419ATGH/V+ operate with all-ceramic output capacitors?
Yes, MAX20419ATGH/V+ supports all-ceramic output capacitors due to its 2.2MHz fixed-frequency operation and current-mode control architecture. This eliminates the need for electrolytic or tantalum capacitors, reducing solution size, improving reliability, and simplifying layout. Typical designs use 22µF–47µF X5R/X7R ceramics per output, as validated in the MAX20419 evaluation circuit.
MAX20419ATGH/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 3.8V
- Current - Output:
- 3.6A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TQFN (4x4)
MAX20419ATGH/V+ FAQ
1.How can I place an order for MAX20419ATGH/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGH/V+ 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 MAX20419ATGH/V+ reliable?
The price and inventory of MAX20419ATGH/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20419ATGH/V+ is usually 5 days.
3.What payment methods are accepted for MAX20419ATGH/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGH/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGH/V+?
MAX20419ATGH/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGH/V+ 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 MAX20419ATGH/V+?
For technical support, including MAX20419ATGH/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGH/V+ requirements.
6.How does Aetrix verify that MAX20419ATGH/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGH/V+ 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 MAX20419ATGH/V+ meets industry standards.
7.What is the process for return or replacement of MAX20419ATGH/V+?
All MAX20419ATGH/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGH/V+, 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 MAX20419ATGH/V+ part is unused and in its original packaging.
Return procedure for MAX20419ATGH/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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