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Analog Devices Inc./Maxim Integrated MAX20419ATGK/V+T
- Part No.:
- MAX20419ATGK/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGK/V+T.pdf
- Description:
- IC REG BUCK BST 0.8V 3.6A 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
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Product details
Overview
MAX20419ATGK/V+T from Analog Devices is a high-efficiency, 3-output automotive-grade PMIC integrating one synchronous boost converter (5V/750mA) and two synchronous buck converters (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 systems.
For engineers reviewing the MAX20419ATGK/V+T datasheet, MAX20419ATGK/V+T pinout, MAX20419ATGK/V+T application, or MAX20419ATGK/V+T equivalent, key selection criteria include factory-programmed output voltages, integrated windowed watchdog, individual RESET outputs, input overvoltage detection, and fail-safe behavior on open pins in safety-critical SoC and infotainment power rails.
Technical Context
The MAX20419ATGK/V+T implements current-mode control across all three regulators, supporting forced-PWM, skip-mode, and true shutdown modes to optimize efficiency across load conditions. Its 2.2MHz switching frequency enables all-ceramic external component designs while maintaining tight transient response and low output voltage ripple.
Integrated diagnostics include redundant internal reference, shorted-pin detection on RESET1–RESET3, PV overvoltage monitoring, and fail-safe response to open-circuit faults-features aligned with ISO 26262 ASIL-C requirements for functional safety in automotive power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | 1x boost (5V fixed), 2x buck (0.8V–3.8V programmable 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 spread-spectrum modulation to reduce EMI |
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive 3.3V/5V rails |
| Operating Temperature | −40°C to +125°C - qualified for under-hood and ADAS module environments |
| Safety Certification | ASIL-C compliant per ISO 26262, with redundant reference and fault-detection circuits |
Pinout & Package
MAX20419ATGK/V+T is housed in a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (package code TGK), optimized for automotive thermal and space constraints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Individual enable inputs | Independent control of each regulator's startup/shutdown sequence for power sequencing in multi-rail SoCs |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Individually monitored power-good signals with shorted-pin detection for fault isolation |
| WDI, WDS | Watchdog interface | Windowed watchdog input and status output enabling system-level safety monitoring and recovery |
| PV, PV_OV | Main supply input & OV sense | PV accepts 3.0V–5.5V input; PV_OV triggers fault response if input exceeds safe threshold |
| LX1–LX3 | Switch node outputs | Internal high-side/low-side FET connections requiring proper layout for EMI and thermal performance |
| PGND1–PGND3 | Power ground returns | Dedicated ground paths per regulator minimize cross-talk and improve transient immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-configurable output voltages | OUT2/OUT3 preset at order time in 25mV increments from 0.8V to 3.8V - eliminates external resistor networks |
| Programmable windowed watchdog | Enables time-bound system health verification with configurable timeout and window violation detection |
| Fail-safe on open pins | Automatic shutdown and fault reporting when critical pins (e.g., EN, WDI) are left floating or disconnected |
| Integrated low-RDS(ON) switches | Reduces conduction loss and eliminates need for discrete MOSFETs - simplifies layout and improves thermal margin |
| Individual RESET outputs | Per-rail power-good signaling allows independent SoC subsystem initialization and error diagnosis |
Applications
| ADAS Camera Module Power | Automotive Infotainment SoC |
|---|---|
Use Scenario: Dual-camera front-facing ADAS system requiring isolated, sequenced 5V (image sensor), 1.1V (ISP core), and 1.8V (memory I/O) rails. IC Role / Device Role / Timing Role: Primary PMIC delivering three regulated supplies with independent enable and reset signaling for functional safety boot sequencing. Use Value: ±1.4% buck accuracy ensures stable ISP core voltage under dynamic load; ASIL-C diagnostics support ASIL-B system integration. | Use Scenario: High-performance infotainment head unit with quad-core application processor, GPU, and DDR memory subsystem. IC Role / Device Role / Timing Role: Central power management IC providing 5V (USB/PCIe), 1.0V (CPU core), and 1.2V (GPU) with synchronized soft-start and rail-margining capability. Use Value: 2.2MHz operation enables compact 0402 ceramic filter design; individual RESET outputs allow staggered SoC subsystem wake-up. |
| Radar Processing Unit | Domain Controller Power Hub |
Use Scenario: 77GHz radar ECU needing clean, low-noise 5V analog supply and tightly regulated 1.2V digital core voltage. IC Role / Device Role / Timing Role: Dual-buck + boost regulator with spread-spectrum modulation to suppress switching noise coupling into RF front-end. Use Value: Spread-spectrum reduces peak radiated emissions by >10dB; ±1.9% boost accuracy maintains stable ADC reference voltage. | Use Scenario: Zonal architecture domain controller consolidating ADAS, body, and connectivity functions onto single SoC platform. IC Role / Device Role / Timing Role: Safety-aware power hub with redundant reference, open-pin detection, and windowed watchdog for centralized power supervision. Use Value: Fail-safe response to open EN pins prevents uncontrolled power-up; ASIL-C compliance satisfies domain-level safety goals. |
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 |
|---|---|---|---|
| TPS6594131RGER | 4-buck + 2-LDO configuration; no integrated boost; 1.8MHz max switching frequency | Lacks 5V boost rail - requires external boost stage for sensor biasing | Preferred when only buck regulation is needed and higher channel count justifies added complexity |
| MPQ4333GR-AEC1 | Single 3.6A buck; no multi-output integration or ASIL features; 2.2MHz operation | No safety diagnostics, no watchdog, no individual RESET - limited to non-safety sub-systems | Cost-optimized alternative where functional safety and rail count are not required |
Compared with TPS6594131RGER and MPQ4333GR-AEC1, the MAX20419ATGK/V+T uniquely integrates a 5V boost converter with dual high-current bucks and full ASIL-C diagnostic coverage - eliminating external components and enabling single-chip power for safety-critical ADAS SoCs.
Availability
MAX20419ATGK/V+T is available at Aetrix Electronics and suitable for advanced driver-assistance systems (ADAS), automotive infotainment platforms, and domain controller power architectures requiring stable component supply, long-term automotive qualification, and functional safety compliance.
Supply support for MAX20419ATGK/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 power management semiconductors, serving automotive, industrial, and communications markets with robust, safety-certified solutions.
The MAX20419 belongs to Analog Devices' automotive PMIC product line, engineered specifically for ASIL-C-compliant power delivery in next-generation ADAS and zonal architecture ECUs.
FAQ
What output voltage options are factory-programmed for MAX20419ATGK/V+T?
The MAX20419ATGK/V+T has OUT1 fixed at 5V. OUT2 and OUT3 are factory-configured in 25mV steps from 0.8V to 3.8V per the Ordering Information/Selector Guide. The /V+T suffix indicates a specific preprogrammed variant - exact values must be confirmed via Analog Devices' official part selector or datasheet revision table.
Does MAX20419ATGK/V+T support true shutdown mode?
Yes, MAX20419ATGK/V+T supports true shutdown mode, which disconnects internal circuitry from the input supply to achieve ultra-low quiescent current. This feature is documented in the MAX20419 datasheet Section 8.3.1 and applies to all variants including MAX20419ATGK/V+T.
How does the windowed watchdog function in MAX20419ATGK/V+T?
The MAX20419ATGK/V+T includes a programmable windowed watchdog with dedicated WDI (watchdog input) and WDS (watchdog status) pins. It requires periodic pulses within a defined time window - missing or out-of-window pulses trigger a system reset, enhancing reliability in safety-critical automotive applications.
Is MAX20419ATGK/V+T pin-compatible with other MAX20419 variants?
Yes, all MAX20419 variants-including MAX20419ATGK/V+T-share identical 24-pin TQFN (TGK) packaging and pinout. Differences are limited to factory-programmed output voltages and internal configuration bits; no PCB changes are required when substituting within the same package option.
What protection features are integrated into MAX20419ATGK/V+T?
MAX20419ATGK/V+T integrates overcurrent protection on all three outputs, overtemperature shutdown, input overvoltage detection on PV, shorted-pin detection on RESET outputs, and fail-safe response to open EN/WDI pins - all verified in the device's functional safety documentation for ASIL-C compliance.
MAX20419ATGK/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:
- 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)
MAX20419ATGK/V+T FAQ
1.How can I place an order for MAX20419ATGK/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGK/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 MAX20419ATGK/V+T reliable?
The price and inventory of MAX20419ATGK/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 MAX20419ATGK/V+T is usually 5 days.
3.What payment methods are accepted for MAX20419ATGK/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGK/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGK/V+T?
MAX20419ATGK/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGK/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 MAX20419ATGK/V+T?
For technical support, including MAX20419ATGK/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGK/V+T requirements.
6.How does Aetrix verify that MAX20419ATGK/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGK/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 MAX20419ATGK/V+T meets industry standards.
7.What is the process for return or replacement of MAX20419ATGK/V+T?
All MAX20419ATGK/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGK/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 MAX20419ATGK/V+T part is unused and in its original packaging.
Return procedure for MAX20419ATGK/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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