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Analog Devices Inc./Maxim Integrated MAX20419ATGO/V+T
- Part No.:
- MAX20419ATGO/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGO/V+T.pdf
- Description:
- IC REG BUCK BST 1.1V TRPL 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,746
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Product details
Overview
MAX20419ATGO/V+T 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 converters (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 MAX20419ATGO/V+T datasheet, MAX20419ATGO/V+T pinout, MAX20419ATGO/V+T application, or MAX20419ATGO/V+T equivalent, key selection criteria include factory-preset 5V boost output, dual-buck programmability in 25mV steps, integrated windowed watchdog, individual RESET outputs, and diagnostic features supporting functional safety requirements in SoC and infotainment rails.
Technical Context
The MAX20419ATGO/V+T implements current-mode control across all three regulators, supporting forced-PWM, skip-mode, and true shutdown for dynamic efficiency optimization. Its 2.2MHz switching frequency enables all-ceramic output filtering and compact layout, while spread-spectrum modulation reduces EMI without external components.
Redundant internal references, open-pin fail-safe behavior, and shorted-pin detection on RESET1–RESET3 support fault-tolerant monitoring in ASIL-C systems. Input overvoltage protection triggers at PV_OV threshold, and thermal shutdown activates at +150°C with hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | 1x boost (5V fixed), 2x buck (0.8V–3.8V, factory-programmed 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 ambient, qualified per AEC-Q100 Grade 1 |
| Input Voltage Range | 3.0V to 5.5V on PV supply rail |
| Safety Compliance | ASIL-C compliant per ISO 26262, with redundant reference and diagnostic coverage |
Pinout & Package
MAX20419ATGO/V+T is housed in a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (EP), optimized for automotive PCB thermal management and space-constrained ADAS modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Independent enable inputs | Enable/disable each regulator individually; logic-high active, with internal pull-down |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low when corresponding output is out of regulation; shorted-pin detect enabled |
| WDI, WDS | Watchdog interface | Windowed watchdog input and status output for system-level fault containment |
| LX1–LX3 | Switch node terminals | Connect to external inductors; require low-ESR ceramic capacitors and tight layout |
| PGND1–PGND3 | Power ground returns | Separate ground paths per regulator minimize cross-coupling and improve transient response |
| PV, PV_OV | Main input and OV sense | PV supplies all regulators; PV_OV monitors input overvoltage independently |
Key Features
| Feature | Design Value |
|---|---|
| Factory-configurable buck outputs | 0.8V–3.8V in 25mV increments eliminates external resistor networks and saves board space |
| Integrated windowed watchdog | Enables time-bound system-level fault detection without external timer ICs |
| Fail-safe on open pins | Prevents undetected open-circuit faults by forcing safe state when critical pins float |
| Individual RESET outputs | Allow independent power-good signaling per rail for multi-rail SoC sequencing |
| Spread-spectrum modulation | Reduces peak EMI by >10dB without requiring external filters or shielding |
Applications
| ADAS Camera Module Power | Infotainment Processor Core Rail |
|---|---|
Use Scenario: Dual-camera fusion system requiring isolated, sequenced 5V and dual-core 1.1V/0.9V rails with fault reporting. IC Role / Device Role / Timing Role: Primary PMIC delivering regulated, monitored, and sequenced power to image sensors and ISP. Use Value: Integrated RESET outputs and windowed watchdog eliminate need for discrete supervision ICs, reducing BOM count by 2–3 components. | Use Scenario: High-performance infotainment SoC needing tightly regulated core, I/O, and memory rails with fast load-transient response. IC Role / Device Role / Timing Role: Central power controller providing 0.85V core, 1.1V GPU, and 3.3V I/O rails with <50µs transient recovery. Use Value: 2.2MHz operation and low-RDS(ON) switches achieve <10mV droop under 2A/µs load step, meeting SoC DVFS timing constraints. |
| Automotive Domain Controller | Radar Signal Processor Supply |
Use Scenario: Zonal domain controller consolidating ADAS, body, and connectivity functions with centralized power management. IC Role / Device Role / Timing Role: Multi-rail power source with diagnostics enabling ASIL-B decomposition across subsystems. Use Value: Redundant reference and open-pin fail-safe allow single-chip implementation of safety mechanisms required for ISO 26262 decomposition. | Use Scenario: 77GHz radar processor demanding ultra-low-noise, high-accuracy 1.0V core rail with overvoltage lockout. IC Role / Device Role / Timing Role: Precision buck regulator with ±1.4% accuracy and PV_OV protection preventing damage during battery transients. Use Value: ±1.3% OV/UV monitoring on PV ensures immediate shutdown during load-dump events (>18V), protecting sensitive RF front-end. |
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 |
|---|---|---|---|
| TPS6594121ARSMR | 4-buck + 1-boost, 1.8MHz max freq, no integrated watchdog, lower accuracy (±2%) on buck outputs | Lacks windowed watchdog and ASIL-C diagnostic coverage; suited for non-safety-critical infotainment only | Select if cost-sensitive design requires higher channel count but can accept reduced safety features |
| MPQ4333GQ-AEC1 | Dual-buck only (no boost), 2.2MHz, ±1.5% accuracy, no redundancy or watchdog, AEC-Q100 Grade 1 only | No boost output or safety diagnostics; limited to dual-rail non-ASIL applications like display power | Choose when only two regulated rails are needed and functional safety is not required |
Compared with TPS6594121ARSMR and MPQ4333GQ-AEC1, the MAX20419ATGO/V+T uniquely integrates a 5V boost converter, ASIL-C diagnostics, and windowed watchdog in a single 4mm × 4mm package-enabling consolidated, safety-compliant power delivery where space and compliance are critical.
Availability
MAX20419ATGO/V+T is available at Aetrix Electronics and suitable for advanced driver-assistance systems (ADAS), automotive infotainment processors, and domain controller power management requiring stable component supply and long-term automotive lifecycle support.
Supply support for MAX20419ATGO/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
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 MAX20419ATGO/V+T belongs to Analog Devices' automotive PMIC portfolio, engineered specifically for ASIL-C–compliant power delivery in next-generation ADAS and zonal architecture controllers.
FAQ
What is the factory-preset output voltage configuration for MAX20419ATGO/V+T?
The MAX20419ATGO/V+T has OUT1 factory-set to 5.0V (boost), while OUT2 and OUT3 are programmed to specific voltages within the 0.8V–3.8V range in 25mV steps per the ordering option. This configuration is laser-trimmed at wafer test and cannot be altered in-circuit. The exact values for this variant are documented in the Analog Devices MAX20419 selector guide under order code ATGO/V+T.
Does MAX20419ATGO/V+T support power sequencing between its three outputs?
Yes, MAX20419ATGO/V+T supports independent enable control via EN1, EN2, and EN3 pins, allowing external MCU or sequencer to stagger startup timing. Each output also provides a dedicated open-drain RESET output that asserts only after its respective rail reaches regulation, enabling reliable hardware-based sequencing without additional supervisors.
How does the windowed watchdog in MAX20419ATGO/V+T differ from standard watchdog timers?
The MAX20419ATGO/V+T implements a windowed watchdog with both lower and upper time bounds enforced on the WDI signal. Unlike basic timeout watchdogs, it detects both stuck-high and stuck-low conditions, preventing false resets during normal operation while catching firmware hangs or clock failures. Its status is reported on WDS pin, and failure triggers all three RESET outputs.
Is MAX20419ATGO/V+T compatible with 12V automotive battery input directly?
No, MAX20419ATGO/V+T requires a pre-regulated 3.0V–5.5V input on the PV pin. It is not designed for direct connection to 12V battery rails. A front-end buck converter (e.g., MAX20090) must first step down battery voltage to meet the MAX20419ATGO/V+T input specification before powering the PV supply.
What thermal performance can be expected from MAX20419ATGO/V+T in a 4-layer automotive PCB?
With proper thermal pad soldering to a 200mm² copper pour on layer 2 and 3, MAX20419ATGO/V+T achieves θJA ≈ 32°C/W. At full 3.6A load on both bucks and 750mA on boost at +85°C ambient, junction temperature remains below +115°C-within the −40°C to +125°C operating limit. Thermal derating begins above +105°C ambient.
MAX20419ATGO/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, Buck
- Output Type:
- Fixed
- Number of Outputs:
- 3
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.1V, 1.8V, 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 750mA, 1A, 3A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TQFN (4x4)
MAX20419ATGO/V+T FAQ
1.How can I place an order for MAX20419ATGO/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGO/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 MAX20419ATGO/V+T reliable?
The price and inventory of MAX20419ATGO/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 MAX20419ATGO/V+T is usually 5 days.
3.What payment methods are accepted for MAX20419ATGO/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGO/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGO/V+T?
MAX20419ATGO/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGO/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 MAX20419ATGO/V+T?
For technical support, including MAX20419ATGO/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGO/V+T requirements.
6.How does Aetrix verify that MAX20419ATGO/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGO/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 MAX20419ATGO/V+T meets industry standards.
7.What is the process for return or replacement of MAX20419ATGO/V+T?
All MAX20419ATGO/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGO/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 MAX20419ATGO/V+T part is unused and in its original packaging.
Return procedure for MAX20419ATGO/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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