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Analog Devices Inc./Maxim Integrated MAX20419ATGV/V+T
- Part No.:
- MAX20419ATGV/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGV/V+T.pdf
- Description:
- IC REG BUCK BST PRG/0.8V 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,198
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Product details
Overview
MAX20419ATGV/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 MAX20419ATGV/V+T datasheet, MAX20419ATGV/V+T pinout, MAX20419ATGV/V+T application, or MAX20419ATGV/V+T 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 rails.
Technical Context
The MAX20419ATGV/V+T implements current-mode control across all three regulators, supporting forced-PWM, skip-mode, and true shutdown to optimize efficiency and transient response. Its 2.2MHz switching frequency enables all-ceramic output filtering and reduces solution footprint.
Integrated diagnostics include redundant reference circuitry, shorted-pin detection on RESET1–RESET3, PV overvoltage monitoring with ±1.3% accuracy, and fail-safe assertion when critical pins (e.g., WDI, SYNC) are left floating - all aligned with ASIL-C requirements for automotive functional safety.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | 1x boost (5V fixed), 2x buck (factory-set 0.8V–3.8V 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 rails |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 1 |
| Safety Certification | ASIL-C compliant with redundant reference and open-pin fail-safe logic |
Pinout & Package
MAX20419ATGV/V+T is housed in a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (pin 24 = GND_EP), optimized for automotive thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Individual enable inputs | Independent sequencing control for each regulator; high-active, CMOS-compatible |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low on undervoltage/overvoltage fault; shorted-pin detect enabled |
| WDI, WDS | Watchdog interface | Windowed watchdog with configurable timeout; WDS indicates watchdog status |
| PV, PV_OV | Main supply monitor | PV senses input rail; PV_OV asserts on overvoltage beyond threshold |
| LX1–LX3 | Power switch nodes | Internal high-side/low-side FET connections; require external inductors |
| PGND1–PGND3 | Power ground returns | Separate ground paths per regulator to minimize cross-talk and improve PSRR |
Key Features
| Feature | Design Value |
|---|---|
| Factory-configurable buck outputs | 0.8V–3.8V in 25mV increments - eliminates external resistor networks and saves board space |
| Programmable spread-spectrum modulation | Reduces peak radiated emissions by spreading fundamental switching energy across 2.2MHz ±X% band |
| Fail-safe on open pins | Automatically asserts RESET and disables regulators if WDI, SYNC, or EN pins float - prevents undefined state in safety-critical systems |
| Individual RESET outputs | Each regulator has dedicated open-drain RESET signal - enables independent SoC domain reset sequencing |
| Current-mode control with skip mode | Maintains tight regulation under dynamic load while improving light-load efficiency vs. pure PWM |
Applications
| ADAS Camera Module Power | Infotainment SoC Core Rail |
|---|---|
Use Scenario: Dual-camera fusion system requiring isolated, sequenced 1.1V core and 1.8V I/O rails plus 5V sensor bias. IC Role / Device Role / Timing Role: Primary triple-output PMIC delivering regulated, monitored, and fault-signaled power to image signal processor and CIS sensors. Use Value: Factory-set 1.1V/1.8V/5V outputs eliminate trimming resistors; individual RESETs support staggered boot; ASIL-C diagnostics meet ISO 26262 camera subsystem requirements. | Use Scenario: Automotive head-unit SoC with multiple voltage domains needing independent enable/control and fault reporting. IC Role / Device Role / Timing Role: Centralized power management IC providing sequenced, monitored, and protected supplies for CPU, GPU, and DDR PHY rails. Use Value: 2.2MHz operation allows compact 0.47µH inductors and ceramic caps; programmable watchdog ensures runtime integrity of infotainment firmware. |
| Domain Controller Safety Monitor | Radar Processor Auxiliary Supply |
Use Scenario: Zonal domain controller requiring redundant voltage references and fail-safe shutdown on supply anomaly. IC Role / Device Role / Timing Role: Safety-monitoring PMIC supplying auxiliary rails while validating main supply integrity via PV_OV and internal reference redundancy. Use Value: Redundant reference and open-pin fail-safe ensure deterministic behavior during single-point faults - directly supports ASIL-C decomposition. | Use Scenario: 77GHz radar SoC needing clean, low-noise 1.2V analog and 1.8V digital supplies with fast transient response. IC Role / Device Role / Timing Role: High-PSRR, low-noise dual-buck source with independent soft-start and overcurrent protection per rail. Use Value: Current-mode control and 2.2MHz switching deliver <50mV undershoot on 2A step load; ±1.4% accuracy maintains ADC/DAC reference stability. |
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 |
|---|---|---|---|
| MAX20420ATGV/V+T | Same package and pinout; adds integrated LDO for always-on rail and enhanced watchdog flexibility | Required where always-on 3.3V/1.8V backup supply is needed alongside main rails | Select MAX20420ATGV/V+T only if the design requires a fourth regulated output with ultra-low quiescent current |
| TPS659424RWER | 4-buck + 1-boost configuration; no integrated windowed watchdog; different pinout and register map | Used in TI-based ADAS platforms with existing software stack and layout constraints | Choose TPS659424RWER when leveraging TI's SDK and need higher channel count, not ASIL-C diagnostic depth |
Compared with MAX20419ATGV/V+T, MAX20420ATGV/V+T extends functionality with an always-on LDO but shares identical safety architecture, while TPS659424RWER offers more outputs at the cost of reduced integrated diagnostics and non-pin-compatible layout integration.
Availability
MAX20419ATGV/V+T is available at Aetrix Electronics and suitable for advanced driver-assistance systems (ADAS), infotainment head-units, and automotive domain controller power designs requiring stable component supply, long-term automotive qualification, and functional safety compliance.
Supply support for MAX20419ATGV/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 MAX20419ATGV/V+T belongs to Analog Devices' automotive-qualified PMIC portfolio, designed specifically to consolidate power delivery and safety monitoring for ASIL-C-compliant ADAS and zonal controller applications.
FAQ
What is the factory-set output voltage configuration for MAX20419ATGV/V+T?
The MAX20419ATGV/V+T features factory-preset outputs: OUT1 is fixed at 5.0V, while OUT2 and OUT3 are set to specific voltages within the 0.8V–3.8V range in 25mV steps per the ordering option. This eliminates external feedback resistors and ensures repeatable, production-ready power rail generation without calibration.
Does MAX20419ATGV/V+T support independent power sequencing?
Yes, MAX20419ATGV/V+T supports independent sequencing via three dedicated enable inputs (EN1, EN2, EN3) and three open-drain RESET outputs (RESET1–RESET3). Each regulator can be turned on/off separately, and corresponding RESET signals assert independently upon fault, enabling precise SoC domain power-up/down control.
How does the windowed watchdog function in MAX20419ATGV/V+T?
The MAX20419ATGV/V+T includes a programmable windowed watchdog using WDI (watchdog input) and WDS (watchdog status) pins. It requires periodic strobing within a defined time window; failure to do so triggers a system reset. WDS provides real-time status, allowing host firmware to verify watchdog health before critical operations.
Is MAX20419ATGV/V+T qualified for automotive temperature and reliability standards?
Yes, MAX20419ATGV/V+T is AEC-Q100 Grade 1 qualified (−40°C to +125°C) and designed for automotive use. It meets stringent reliability, EMI, and functional safety requirements, including ASIL-C compliance through redundant reference, open-pin fail-safe, and shorted-pin detection on RESET outputs.
Can MAX20419ATGV/V+T operate with all-ceramic output capacitors?
Yes, MAX20419ATGV/V+T operates at 2.2MHz with current-mode control, enabling stable regulation using only ceramic capacitors on all outputs. This eliminates electrolytic or tantalum components, reduces solution size, improves reliability, and simplifies layout - confirmed in the typical operating circuit with 22µF/47µF ceramic caps on OUT1/OUT2/OUT3.
MAX20419ATGV/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:
- Programmable (Fixed)
- Number of Outputs:
- 3
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V (5V)
- Voltage - Output (Max):
- 3.8V
- Current - Output:
- 750mA, 3.6A, 3.6A
- 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)
MAX20419ATGV/V+T FAQ
1.How can I place an order for MAX20419ATGV/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGV/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 MAX20419ATGV/V+T reliable?
The price and inventory of MAX20419ATGV/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 MAX20419ATGV/V+T is usually 5 days.
3.What payment methods are accepted for MAX20419ATGV/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGV/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGV/V+T?
MAX20419ATGV/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGV/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 MAX20419ATGV/V+T?
For technical support, including MAX20419ATGV/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGV/V+T requirements.
6.How does Aetrix verify that MAX20419ATGV/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGV/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 MAX20419ATGV/V+T meets industry standards.
7.What is the process for return or replacement of MAX20419ATGV/V+T?
All MAX20419ATGV/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGV/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 MAX20419ATGV/V+T part is unused and in its original packaging.
Return procedure for MAX20419ATGV/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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