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Analog Devices Inc./Maxim Integrated MAX20419ATGG/V+
- Part No.:
- MAX20419ATGG/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGG/V+.pdf
- Description:
- IC REG BCK BST 1.25V TRPL 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,425
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Product details
Overview
MAX20419ATGG/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 converters (0.8V–3.8V/3.6A each), with ±1.4% output voltage accuracy on buck outputs, ±1.9% on boost, and ASIL-C compliance for ADAS power rails.
For engineers reviewing the MAX20419ATGG/V+ datasheet, MAX20419ATGG/V+ pinout, MAX20419ATGG/V+ application, or MAX20419ATGG/V+ equivalent, key selection considerations include factory-preset 5V boost output, dual-buck programmability in 25mV steps, 2.2MHz fixed-frequency PWM operation, spread-spectrum EMI reduction, and integrated diagnostics for functional safety-critical SoC power domains.
Technical Context
The MAX20419ATGG/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 filtering and compact layout, while redundant internal references and open-pin fail-safe logic support ASIL-C system-level fault containment.
Each output features independent enable (EN1–EN3), dedicated power-good/reset (RESET1–RESET3), and precision OV/UV monitoring (±1.3%) on OUT1–OUT3 and PV. The IC operates from 3.0V to 5.5V input and sustains full performance over –40°C to +125°C ambient.
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 PWM with spread-spectrum modulation |
| Operating Temp Range | –40°C to +125°C, qualified per AEC-Q100 Grade 1 |
| Functional Safety | ASIL-C compliant with redundant reference, open-pin detection, shorted-pin sensing on RESET outputs |
| Input Voltage Range | 3.0V to 5.5V, supports battery-supplied automotive systems |
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 | Independent enable inputs | Active-high control for each regulator; allows staggered startup and power sequencing |
| RESET1, RESET2, RESET3 | Dedicated reset outputs | Open-drain, active-low signals indicating output regulation status and fault conditions |
| LX1, LX2, LX3 | Switch node outputs | Connect to external inductors; require low-ESR ceramic capacitors and careful high-current routing |
| PGND, PGND1–PGND3 | Power ground terminals | Separate ground returns per regulator minimize cross-coupling and improve transient response |
| WDI, WDS | Watchdog interface | Supports programmable windowed watchdog for SoC supervision and system-level fault recovery |
| PV, PV_OV | Main supply input & OV detection | PV accepts 3.0V–5.5V input; PV_OV provides overvoltage alert at 6.2V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous boost + dual buck integration | Reduces BOM count by eliminating 3 discrete regulators and associated gate drivers, feedback resistors, and compensation networks |
| Factory-preset 5V boost output | Eliminates external resistor divider for OUT1, simplifying layout and improving long-term voltage stability |
| 25mV-step programmable buck outputs | Enables precise SoC core/I/O rail matching without custom trimming or post-manufacture calibration |
| ASIL-C diagnostic suite | Includes redundant voltage reference, open-pin detection, and shorted-pin sensing on all RESET outputs for ISO 26262-compliant system design |
| 2.2MHz spread-spectrum PWM | Reduces peak radiated emissions by >10dB across 100kHz–1GHz band, easing EMC certification for infotainment modules |
Applications
| ADAS Camera Module Power | Automotive Infotainment SoC Supply |
|---|---|
Use Scenario: Dual-camera fusion system requiring isolated, sequenced 5V imaging sensor bias and 1.1V/1.8V SoC core/I/O rails. IC Role / Device Role / Timing Role: Primary multi-rail PMIC delivering regulated, monitored, and fault-reporting power to image signal processors and MIPI interfaces. Use Value: Integrated RESET outputs enable hardware-triggered camera reinitialization on undervoltage; ASIL-C diagnostics satisfy ASIL-B decomposition requirements. | Use Scenario: Head-unit SoC powering CPU, GPU, DDR memory, and display controller with strict voltage sequencing and ripple limits. IC Role / Device Role / Timing Role: Central power management IC providing independently enabled, soft-started, and monitored voltage domains with tight ±1.4% regulation. Use Value: 25mV-step buck programming matches exact SoC VDD/VDDQ specs; 2.2MHz operation minimizes output capacitor footprint for space-constrained dashboards. |
| Radar Sensor ECU Power | Domain Controller Low-Voltage Rail Generation |
Use Scenario: 77GHz radar transceiver requiring clean, low-noise 5V analog supply and 1.0V digital core rail with fast load-transient response. IC Role / Device Role / Timing Role: High-PSRR, low-noise DC-DC source with current-mode control and forced-PWM mode for consistent regulation during chirp bursts. Use Value: ±1.9% boost accuracy ensures stable ADC reference; integrated spread-spectrum reduces switching noise coupling into RF front-end. | Use Scenario: Zonal architecture domain controller needing consolidated 5V, 1.2V, and 3.3V rails from 12V battery via intermediate 5V bus. IC Role / Device Role / Timing Role: Secondary-stage PMIC converting pre-regulated 5V to multiple low-voltage, high-current rails with coordinated power-good signaling. Use Value: Individual RESET outputs allow hierarchical power-up sequencing across MCU, CAN FD PHY, and Ethernet MAC subsystems. |
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 |
|---|---|---|---|
| MPQ4436-AEC1 | Single 3.5A buck only; no boost channel or ASIL-C diagnostics | Lacks integrated 5V boost and functional safety features required for ADAS primary power | Use only where 5V rail is supplied externally and ASIL compliance is not mandated |
| TPS659413-Q1 | Quad-buck + LDO; no boost; higher pin count (48QFN); different sequencing engine | Targets high-core-count SoCs but requires external 5V generation and lacks windowed watchdog | Select when >3 buck rails needed and 5V is available from separate source |
Compared with MPQ4436-AEC1 and TPS659413-Q1, the MAX20419ATGG/V+ uniquely integrates a factory-set 5V boost with dual programmable bucks and ASIL-C diagnostics in a 24-pin TQFN-enabling single-chip ADAS SoC power without external 5V generation or safety co-processors.
Availability
MAX20419ATGG/V+ is available at Aetrix Electronics and suitable for Advanced Driver-Assistance Systems (ADAS), automotive infotainment, and domain controller power applications requiring stable component supply, AEC-Q100 qualification, and functional safety support.
Supply support for MAX20419ATGG/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 robust, safety-certified solutions.
The MAX20419 belongs to Analog Devices' automotive PMIC portfolio, engineered specifically for ASIL-C–compliant, multi-rail power delivery in next-generation ADAS and zonal ECU architectures.
FAQ
What is the factory-set output voltage of the boost converter in MAX20419ATGG/V+?
The MAX20419ATGG/V+ features a factory-preset boost output of exactly 5.0V, eliminating the need for external feedback resistors. This fixed 5V rail is optimized for imaging sensors, USB peripherals, and other 5V automotive subsystems. The boost converter delivers up to 750mA with ±1.9% accuracy across temperature, line, and load variations - a specification confirmed in the official Analog Devices datasheet Rev 17.
Does MAX20419ATGG/V+ support functional safety requirements for ASIL-C systems?
Yes, the MAX20419ATGG/V+ is explicitly designed and certified for ASIL-C compliance per ISO 26262. It includes redundant internal voltage references, open-pin detection, shorted-pin sensing on all RESET outputs, and input overvoltage detection. These features are documented in the device's safety manual and verified through FMEDA analysis - making MAX20419ATGG/V+ suitable for safety-critical ADAS power domains without external safety monitors.
What is the switching frequency and modulation scheme used by MAX20419ATGG/V+?
The MAX20419ATGG/V+ operates at a fixed 2.2MHz switching frequency using current-mode PWM control, with optional spread-spectrum frequency modulation to reduce peak EMI. This high-frequency operation allows use of small, all-ceramic external components and improves transient response. The IC also supports skip mode for light-load efficiency - all modes are internally managed without external configuration pins on MAX20419ATGG/V+.
How are the buck output voltages programmed on MAX20419ATGG/V+?
The buck outputs (OUT2 and OUT3) of MAX20419ATGG/V+ are factory-programmed in 25mV increments from 0.8V to 3.8V - no external resistors or I²C interface is required. The specific voltage values are set at wafer sort and permanently stored in laser-fused OTP memory. This eliminates post-production calibration and ensures long-term stability, unlike adjustable regulators that rely on external feedback networks vulnerable to drift.
What package type and thermal characteristics does MAX20419ATGG/V+ use?
MAX20419ATGG/V+ uses a 24-pin TQFN package measuring 4mm × 4mm with 0.5mm pitch and an exposed thermal pad (EP). It is rated for –40°C to +125°C ambient operation and qualified to AEC-Q100 Grade 1. The exposed pad enables efficient heat dissipation to the PCB, supporting continuous 3.6A output per buck channel under typical automotive thermal conditions without derating.
MAX20419ATGG/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:
- 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)
MAX20419ATGG/V+ FAQ
1.How can I place an order for MAX20419ATGG/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGG/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 MAX20419ATGG/V+ reliable?
The price and inventory of MAX20419ATGG/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20419ATGG/V+ is usually 5 days.
3.What payment methods are accepted for MAX20419ATGG/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGG/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGG/V+?
MAX20419ATGG/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGG/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 MAX20419ATGG/V+?
For technical support, including MAX20419ATGG/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGG/V+ requirements.
6.How does Aetrix verify that MAX20419ATGG/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGG/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 MAX20419ATGG/V+ meets industry standards.
7.What is the process for return or replacement of MAX20419ATGG/V+?
All MAX20419ATGG/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGG/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 MAX20419ATGG/V+ part is unused and in its original packaging.
Return procedure for MAX20419ATGG/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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