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Analog Devices Inc./Maxim Integrated MAX20419ATGD/V+
- Part No.:
- MAX20419ATGD/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGD/V+.pdf
- Description:
- IC REG BCK BST 1.25V TRPL 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:975
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Product details
Overview
MAX20419ATGD/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 and ±1.9% on boost, 2.2MHz fixed-frequency PWM operation, and ASIL-C compliance for ADAS power rails.
For engineers reviewing the MAX20419ATGD/V+ datasheet, MAX20419ATGD/V+ pinout, MAX20419ATGD/V+ application, or MAX20419ATGD/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 systems.
Technical Context
The MAX20419ATGD/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 full-ceramic external component design and reduces EMI through integrated spread-spectrum modulation.
Redundant internal voltage references, independent OV/UV monitoring (±1.3%) per output and PV rail, shorted-pin detection on RESET1–RESET3, and fail-safe response to open-circuit pins provide diagnostic coverage required for ASIL-C system integration in automotive domain controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | 1x boost (5V fixed), 2x buck (0.8V–3.8V, factory-configurable in 25mV steps) |
| Max Output Current | OUT1: 750mA; OUT2/OUT3: 3.6A each |
| Output Voltage Accuracy | ±1.9% (OUT1), ±1.4% (OUT2/OUT3) over line/load/temp |
| Switching Frequency | 2.2MHz fixed, with programmable spread-spectrum modulation |
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive 3.3V/5V supplies |
| Operating Temperature | −40°C to +125°C - qualified for under-hood and ADAS ECU environments |
| Safety Certification | ASIL-C compliant with redundant reference, open-pin fail-safe, and shorted-pin detection |
Pinout & Package
Package: 24-pin TQFN (4mm × 4mm, 0.5mm pitch) with exposed thermal pad (EP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Individual enable inputs | Independent control of boost and each buck regulator; supports staggered power-up sequencing |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low on OV/UV fault; shorted-pin detection prevents false resets |
| WDI, WDS | Watchdog interface | Programmable windowed watchdog with dedicated input and status output |
| PV, PV_OV | Main supply monitor | PV monitors input rail; PV_OV provides overvoltage flag for system-level protection |
| LX1–LX3 | Power switch node connections | Connect to external inductors; LX1 drives boost, LX2/LX3 drive bucks |
| PGND1–PGND3 | Power ground returns | Separated ground paths per regulator minimize cross-talk and improve transient response |
Key Features
| Feature | Design Value |
|---|---|
| Factory-configurable buck outputs | 0.8V–3.8V in 25mV steps eliminates external feedback resistors and saves board space |
| Individual RESET outputs | Per-regulator reset signaling enables granular fault isolation in multi-rail SoC power domains |
| Programmable windowed watchdog | Prevents system lockup via time-bound pulse validation, with configurable timeout and window |
| Fail-safe on open pins | Internal pull-downs and detection logic force safe shutdown if EN or RESET traces open |
| Input overvoltage detection | Dedicated PV_OV pin asserts fault before internal LDOs or regulators are stressed beyond rating |
Applications
| ADAS Camera Module Power | Infotainment SoC Core Rail |
|---|---|
Use Scenario: Dual-camera fusion module requiring isolated 5V imaging rail and dual 1.1V/1.8V SoC core/memory rails with fast transient response. IC Role / Device Role / Timing Role: Single-chip triple-output PMIC delivering sequenced, monitored, and fault-reporting power to image sensor, ISP, and DDR interface. Use Value: Eliminates discrete buck-boost solution; ±1.4% buck accuracy ensures stable SoC operation at 1.1V ±15.4mV. | Use Scenario: Automotive head-unit SoC demanding independent power control, watchdog supervision, and ASIL-C diagnostics. IC Role / Device Role / Timing Role: Primary power management IC managing core, GPU, and I/O voltage domains with individual reset assertion and voltage monitoring. Use Value: Factory-set 0.85V/1.1V/3.3V outputs reduce BOM count; ASIL-C compliance satisfies ISO 26262 tool qualification requirements. |
| Radar Processing Unit | Domain Controller Power Hub |
Use Scenario: 77GHz radar ECU needing clean 5V analog supply and tightly regulated 1.0V digital core rail with thermal derating. IC Role / Device Role / Timing Role: Centralized power source with overtemperature shutdown and individual EN control for radar DSP and RF front-end. Use Value: −40°C to +125°C operation supports full ambient range; 2.2MHz switching avoids interference with radar IF bands. | Use Scenario: Zonal architecture domain controller consolidating power for multiple ECUs, requiring redundancy and fault logging. IC Role / Device Role / Timing Role: Safety-capable power hub providing three regulated rails plus diagnostic reporting via WDS and RESET signals. Use Value: Redundant reference and open-pin fail-safe ensure continued operation during trace degradation in high-vibration environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-output automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6594131RWER | 4-output PMIC (3 buck + 1 LDO); no boost; 1.8MHz max freq; no windowed watchdog | Lacks 5V boost rail and programmable watchdog; suited for LDO-assisted SoC designs without imaging sensors | Select when 5V boost is unnecessary and system relies on external 5V supply |
| MPQ4333GR-AEC1 | Dual buck only (no boost); 2.2MHz; AEC-Q100 Grade 1; no ASIL features or RESET outputs | No safety diagnostics, no individual reset signaling, no watchdog - limited to non-ASIL subsystems | Select for cost-sensitive ADAS sub-modules where ASIL-C is not mandated |
Compared with TPS6594131RWER and MPQ4333GR-AEC1, the MAX20419ATGD/V+ uniquely integrates a 5V boost converter with ASIL-C diagnostics, enabling single-chip power for camera+SoC combinations while reducing inter-IC communication overhead and PCB area.
Availability
MAX20419ATGD/V+ is available at Aetrix Electronics and suitable for Advanced Driver-Assistance Systems (ADAS), infotainment head-units, and SoC-based domain controllers requiring stable component supply, long-term automotive qualification, and functional safety support.
Supply support for MAX20419ATGD/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 power management semiconductors, serving automotive, industrial, and communications markets with precision and reliability.
The MAX20419 belongs to Analog Devices' automotive PMIC portfolio, engineered specifically for ASIL-C-compliant power delivery in ADAS and zonal domain controllers with integrated diagnostics and multi-rail sequencing.
FAQ
What output voltages are factory-configured on the MAX20419ATGD/V+?
The MAX20419ATGD/V+ has OUT1 factory-set to 5.0V (boost), while OUT2 and OUT3 are configured per ordering option within 0.8V–3.8V in 25mV increments. The specific values for this variant are documented in the Analog Devices selector guide and cannot be adjusted post-manufacture without external feedback networks.
Does the MAX20419ATGD/V+ support power sequencing between its three outputs?
Yes, the MAX20419ATGD/V+ supports controlled sequencing via independent EN1, EN2, and EN3 pins. Each enable input can be driven with timed delays to establish precise startup order - for example, enabling OUT1 (5V) first, then OUT2, then OUT3 - critical for SoC and FPGA power-up integrity.
How does the MAX20419ATGD/V+ achieve ASIL-C compliance?
The MAX20419ATGD/V+ achieves ASIL-C compliance through redundant internal voltage references, open-pin fail-safe logic, shorted-pin detection on RESET outputs, ±1.3% OV/UV monitoring on all rails, and diagnostic coverage verified per ISO 26262 requirements - all implemented in hardware without software dependency.
Can the MAX20419ATGD/V+ operate without external inductors?
No, the MAX20419ATGD/V+ requires external inductors for all three regulators: one for the boost (LX1), and one each for the bucks (LX2, LX3). The IC integrates only the MOSFET switches and control circuitry; inductor selection is specified in the datasheet for optimal efficiency and thermal performance.
What is the function of the PV_OV pin on the MAX20419ATGD/V+?
The PV_OV pin on the MAX20419ATGD/V+ is an open-drain output that asserts low when the main PV supply exceeds the internal overvoltage threshold. It provides early warning of input overvoltage conditions before internal regulators or downstream circuitry are stressed, enabling system-level shutdown or clamping action.
MAX20419ATGD/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:
- 3
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.25V, 2.3V, 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 750mA, 3.6A, 3.6A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TQFN (4x4)
MAX20419ATGD/V+ FAQ
1.How can I place an order for MAX20419ATGD/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGD/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 MAX20419ATGD/V+ reliable?
The price and inventory of MAX20419ATGD/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20419ATGD/V+ is usually 5 days.
3.What payment methods are accepted for MAX20419ATGD/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGD/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGD/V+?
MAX20419ATGD/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGD/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 MAX20419ATGD/V+?
For technical support, including MAX20419ATGD/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGD/V+ requirements.
6.How does Aetrix verify that MAX20419ATGD/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGD/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 MAX20419ATGD/V+ meets industry standards.
7.What is the process for return or replacement of MAX20419ATGD/V+?
All MAX20419ATGD/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGD/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 MAX20419ATGD/V+ part is unused and in its original packaging.
Return procedure for MAX20419ATGD/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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