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Analog Devices Inc./Maxim Integrated MAX20419ATGB/V+
- Part No.:
- MAX20419ATGB/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGB/V+.pdf
- Description:
- IC REG BUCK BST ADJ TRPL 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,471
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Product details
Overview
MAX20419ATGB/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 accuracy on buck outputs, ±1.9% on boost, and ASIL-C compliance for ADAS power rails.
For engineers reviewing the MAX20419ATGB/V+ datasheet, MAX20419ATGB/V+ pinout, MAX20419ATGB/V+ application, or MAX20419ATGB/V+ equivalent, key selection factors include factory-preset 5V boost output, dual-buck programmability in 25mV steps, 2.2MHz fixed-frequency PWM operation, integrated low-RDS(ON) switches, and diagnostic features including windowed watchdog and shorted-pin detection on RESET outputs.
Technical Context
The MAX20419ATGB/V+ 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 external component designs while maintaining tight load-transient response.
Redundant internal references, open-pin fail-safe behavior, and independent OV/UV monitoring (±1.3%) on OUT1–OUT3 and PV support functional safety requirements in ASIL-C systems. The IC operates across –40°C to +125°C and accepts 3.0V–5.5V input voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | 1x boost (5V fixed), 2x synchronous buck (0.8V–3.8V, 25mV step) |
| Max Output Current | 750mA (OUT1), 3.6A each (OUT2/OUT3) |
| Output Voltage Accuracy | ±1.9% (OUT1), ±1.4% (OUT2/OUT3) over line/load/temp |
| Switching Frequency | 2.2MHz fixed, with spread-spectrum modulation to reduce EMI |
| Operating Temp Range | –40°C to +125°C, qualified per AEC-Q100 Grade 1 |
| Input Voltage Range | 3.0V to 5.5V, with PV overvoltage detection |
| Safety Certification | ASIL-C compliant per ISO 26262, with redundant reference and fail-safe logic |
Pinout & Package
MAX20419ATGB/V+ is housed in a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (pin 24 = GND). Pin functions are validated per Analog Devices' MAX20419 datasheet Rev 17 (2026).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Enable inputs for OUT1–OUT3 | Individual enable control with internal pull-down; active-high, 1.2V logic threshold |
| RESET1–RESET3 | Open-drain reset outputs | Assert low on OV/UV fault; shorted-pin detection prevents false resets |
| WDI / WDS | Watchdog input and status | Windowed watchdog interface with configurable timeout and fault reporting |
| LX1–LX3 | Switch node outputs | Connect to external inductors; high dV/dt nodes requiring tight layout |
| PGND1–PGND3 | Power ground returns | Separated grounds per regulator to minimize coupling and improve noise immunity |
| PV | Main input supply monitor | Monitors input rail for overvoltage; triggers shutdown if >5.85V (typ) |
Key Features
| Feature | Design Value |
|---|---|
| Factory-preset 5V boost output | Eliminates external feedback resistors for OUT1, reducing BOM count and layout area |
| Dual-buck voltage programming in 25mV steps | Enables precise SoC core/I/O rail matching without trimming or calibration |
| Integrated low-RDS(ON) power switches | Reduces conduction loss at full load and removes discrete MOSFET layout complexity |
| Programmable spread-spectrum modulation | Lowers peak radiated emissions by spreading energy across 2.2MHz ±10% band |
| Fail-safe on open pins | Prevents undefined regulator behavior during connector disconnect or trace fracture |
| Individual RESET outputs with shorted-pin detection | Allows independent system-level fault isolation without shared reset bus contention |
Applications
| Radar Sensor Power Supply | ADAS Camera Module |
|---|---|
Use Scenario: Powers 77GHz radar transceiver ASICs requiring clean, sequenced 1.0V, 1.8V, and 5V rails under engine-bay temperature extremes. IC Role / Device Role / Timing Role: Primary triple-rail PMIC delivering regulated outputs with synchronized soft-start and independent reset signaling. Use Value: ASIL-C diagnostics ensure safe shutdown during sensor fault conditions; ±1.4% buck accuracy maintains RF front-end bias stability. | Use Scenario: Supplies image signal processor (ISP), CMOS sensor, and interface logic in automotive surround-view cameras. IC Role / Device Role / Timing Role: Central power controller providing 0.85V core, 1.2V I/O, and 5V USB/MIPI PHY rails with fast transient response. Use Value: 2.2MHz operation enables compact 0402 ceramic capacitors; individual RESET outputs simplify ISP fault logging. |
| Infotainment Application Processor | Automotive Telematics Control Unit |
Use Scenario: Powers quad-core ARM-based infotainment SoC with dynamic voltage scaling demands across CPU, GPU, and memory subsystems. IC Role / Device Role / Timing Role: Multi-output DC-DC source with programmable buck voltages and windowed watchdog for runtime integrity checking. Use Value: Factory-configurable 25mV steps allow exact match to SoC VDD requirements; skip mode extends idle battery life. | Use Scenario: Supplies LTE modem, GNSS receiver, and CAN FD controller in telematics gateway with strict EMI limits. IC Role / Device Role / Timing Role: EMI-optimized power solution using spread-spectrum modulation and separated PGND paths. Use Value: Radiated emissions reduced below CISPR 25 Class 5 limits; PV overvoltage detection protects against load-dump transients. |
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 |
|---|---|---|---|
| TPS659413RWER | 4-buck + 1-boost, 1.8V–5.5V input, no integrated watchdog, ±2% output accuracy | Lacks windowed watchdog and ASIL-C diagnostic coverage; requires external fault monitoring | Preferred when higher channel count is needed but functional safety level is ASIL-B or lower |
| MPQ4333GQ-AEC1 | Dual-buck only (no boost), 3.3V–36V input, AEC-Q100 Grade 1, ±2% accuracy, no redundancy features | Cannot replace 5V boost rail; lacks PV monitoring, open-pin fail-safe, and RESET pin diagnostics | Only suitable as partial replacement where boost function is implemented externally |
Compared with TPS659413RWER and MPQ4333GQ-AEC1, the MAX20419ATGB/V+ uniquely integrates ASIL-C-compliant diagnostics, factory-preset 5V boost, and per-rail RESET signaling-enabling single-chip compliance for radar and camera domain controllers without supplemental safety circuitry.
Availability
MAX20419ATGB/V+ is available at Aetrix Electronics and suitable for Advanced Driver-Assistance Systems (ADAS), automotive infotainment systems, and SoC power delivery applications requiring stable component supply, long-term automotive qualification, and functional safety support.
Supply support for MAX20419ATGB/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 MAX20419ATGB/V+ belongs to Analog Devices' automotive power management IC portfolio, engineered specifically for ASIL-C-compliant domain controllers in radar, camera, and central compute systems requiring integrated safety diagnostics and compact triple-rail generation.
FAQ
What is the input voltage range supported by the MAX20419ATGB/V+?
The MAX20419ATGB/V+ supports an input voltage range of 3.0V to 5.5V on its PV pin. It also includes dedicated input overvoltage detection that triggers shutdown if the PV rail exceeds 5.85V (typical), protecting downstream circuitry during automotive load-dump events. This range is optimized for 5V nominal vehicle electrical systems and compatible with start-stop battery profiles.
Does the MAX20419ATGB/V+ require external feedback resistors for all outputs?
No - the MAX20419ATGB/V+ has a factory-preset 5V output for OUT1, eliminating external resistors for the boost rail. OUT2 and OUT3 are programmable from 0.8V to 3.8V in 25mV steps via I²C or hardware strapping (depending on variant), so resistor networks are optional and only needed if custom nonstandard voltages are required beyond factory settings.
How does the MAX20419ATGB/V+ meet ASIL-C requirements?
The MAX20419ATGB/V+ meets ASIL-C through redundant internal voltage references, open-pin fail-safe logic, shorted-pin detection on all RESET outputs, windowed watchdog functionality, and independent OV/UV monitoring (±1.3%) on all outputs and PV. These features are documented in Analog Devices' ISO 26262 safety manual for the MAX20419ATGB/V+, enabling systematic fault coverage in safety-critical ADAS domains.
What package type and thermal characteristics does the MAX20419ATGB/V+ use?
The MAX20419ATGB/V+ uses a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (pin 24 = GND). It is rated for –40°C to +125°C ambient operation and qualified to AEC-Q100 Grade 1. The exposed pad significantly improves thermal resistance (θJA ≈ 32°C/W on 2-layer board), supporting continuous 3.6A output per buck channel under automotive under-hood conditions.
Can the MAX20419ATGB/V+ operate in forced-PWM mode exclusively?
Yes - the MAX20419ATGB/V+ supports forced-PWM mode across all three regulators via configuration bits, disabling skip mode. This ensures constant 2.2MHz switching for EMI-sensitive applications like radar and camera modules, at the expense of light-load efficiency. Forced-PWM is selectable independently per regulator, allowing hybrid operation where only noise-critical rails remain in PWM.
MAX20419ATGB/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Strip
- Product Status:
- Active
- Function:
- Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 3
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TQFN-CU (4.1x4.1)
MAX20419ATGB/V+ FAQ
1.How can I place an order for MAX20419ATGB/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGB/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 MAX20419ATGB/V+ reliable?
The price and inventory of MAX20419ATGB/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20419ATGB/V+ is usually 5 days.
3.What payment methods are accepted for MAX20419ATGB/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGB/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGB/V+?
MAX20419ATGB/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGB/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 MAX20419ATGB/V+?
For technical support, including MAX20419ATGB/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGB/V+ requirements.
6.How does Aetrix verify that MAX20419ATGB/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGB/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 MAX20419ATGB/V+ meets industry standards.
7.What is the process for return or replacement of MAX20419ATGB/V+?
All MAX20419ATGB/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGB/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 MAX20419ATGB/V+ part is unused and in its original packaging.
Return procedure for MAX20419ATGB/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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