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Analog Devices Inc./Maxim Integrated MAX20419ATGL/V+T
- Part No.:
- MAX20419ATGL/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGL/V+T.pdf
- Description:
- IC REG BUCK BST 0.9V TRPL 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,728
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Product details
Overview
MAX20419ATGL/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 regulators (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 MAX20419ATGL/V+T datasheet, MAX20419ATGL/V+T pinout, MAX20419ATGL/V+T application, or MAX20419ATGL/V+T 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 MAX20419ATGL/V+T 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 design while maintaining tight load-transient response.
ASIL-C compliance is achieved via redundant internal reference, open-pin fail-safe behavior, input overvoltage detection, and independent RESET outputs with shorted-pin detection-each tied to dedicated monitoring circuits for OUT1–OUT3 and PV supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | 1x boost (5V fixed), 2x buck (0.8V–3.8V, factory-programmed in 25mV steps) |
| Output Accuracy | ±1.9% for OUT1 (boost); ±1.4% for OUT2/OUT3 (buck) over line/load/temp |
| Switching Frequency | 2.2MHz fixed, enabling compact all-ceramic filter design and EMI reduction via spread-spectrum modulation |
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery rail with transient tolerance |
| Operating Temperature | −40°C to +125°C - qualified for under-hood ADAS and infotainment power domains |
| Protection Features | Overcurrent, overtemperature, input overvoltage, and open/shorted-pin detection on RESET[1:3] |
| Diagnostic Capability | Programmable windowed watchdog, redundant reference, fail-safe on open pins |
Pinout & Package
MAX20419ATGL/V+T is housed in a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (pin 24 = EP), optimized for automotive thermal dissipation and board space constraints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Individual enable inputs | Independent startup sequencing control for each regulator output |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Active-low status flags with shorted-pin detection for fault isolation |
| WDI, WDS | Watchdog interface | Windowed watchdog input and status output for system-level safety monitoring |
| LX1–LX3 | Switch node terminals | High-current connections to external inductors; require low-inductance layout |
| PGND1–PGND3 | Power ground returns | Dedicated ground paths per regulator to minimize cross-regulator noise coupling |
| PV, PV_OV | Main supply input and OV sense | PV powers internal circuitry; PV_OV enables input overvoltage protection 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/control ICs |
| Factory-configurable buck outputs | Eliminates external resistor networks for VOUT setting; supports 0.8V–3.8V in 25mV increments |
| 2.2MHz fixed-frequency PWM | Enables use of 0.47µH inductors and 22–47µF ceramic capacitors, shrinking total solution size by >40% vs. 500kHz designs |
| ASIL-C diagnostic architecture | Includes redundant reference, open-pin fail-safe, and individual RESET outputs with shorted-pin detection for ISO 26262 compliance |
| Programmable windowed watchdog | Allows host SoC to validate real-time health of MAX20419ATGL/V+T via timed WDI pulses and monitored WDS response |
Applications
| ADAS Camera Power Supply | Automotive Infotainment SoC Core Rail |
|---|---|
Use Scenario: Dual-camera module requiring isolated 5V bias and dual 1.1V/1.8V core/memory rails with fast transient response. IC Role / Device Role / Timing Role: Single-chip triple-output PMIC delivering sequenced, monitored power with ASIL-C diagnostics. Use Value: Replaces three discrete converters and discrete watchdog circuitry while meeting ISO 26262 FMEDA requirements for camera ECU. | Use Scenario: High-performance infotainment processor needing tightly regulated 0.85V CPU core, 1.1V GPU, and 3.3V I/O rails with soft-start and fault reporting. IC Role / Device Role / Timing Role: Centralized power management IC providing independent enable, reset, and voltage monitoring per rail. Use Value: Factory-programmed 25mV-step buck outputs eliminate trimming resistors; individual RESET outputs enable per-rail fault logging in Linux-based head unit firmware. |
| Radar Sensor Front-End Bias | Domain Controller Safety Monitor Rail |
Use Scenario: 77GHz radar transceiver requiring clean 5V analog supply and two low-noise 1.2V/1.8V digital rails with <100ns load-step recovery. IC Role / Device Role / Timing Role: High-frequency triple-output regulator with forced-PWM mode ensuring consistent 2.2MHz switching during transients. Use Value: 2.2MHz operation minimizes output voltage deviation (<15mV) during 1A/µs load steps, critical for RF front-end stability. | Use Scenario: Safety-critical domain controller needing independent 3.3V monitor rail with windowed watchdog and fail-safe reset assertion on supply fault. IC Role / Device Role / Timing Role: Dedicated safety monitor PMIC with WDI/WDS interface and redundant reference for ASIL-D subsystem support. Use Value: Windowed watchdog timeout window configurable via external capacitor; fail-safe open-pin behavior prevents silent failure during connector disconnection. |
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-output PMIC with integrated LDOs; no boost channel; 1.8MHz max switching frequency | Lacks 5V boost capability; requires external boost for 5V sensor bias rails | Preferred when only buck-only rails needed and LDO post-regulation is required for noise-sensitive analog supplies |
| MPQ4333GQ-AEC1 | Dual-buck only (no boost); 2.2MHz operation; no ASIL-C certification or watchdog features | No integrated diagnostics, no RESET outputs, no windowed watchdog or open-pin fail-safe | Selected for cost-sensitive non-safety ADAS modules where functional safety is handled externally |
Compared with TPS6594131RGER and MPQ4333GQ-AEC1, the MAX20419ATGL/V+T uniquely integrates a 5V boost channel with ASIL-C diagnostics and factory-programmable buck outputs-enabling single-chip power for camera/radar sensors without external boost stages or discrete safety monitors.
Availability
MAX20419ATGL/V+T is available at Aetrix Electronics and suitable for advanced driver-assistance systems (ADAS), automotive infotainment SoC power, and domain controller safety monitor rails requiring stable component supply, long-term automotive qualification, and full lifecycle traceability.
Supply support for MAX20419ATGL/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 ISO/TS 16949-certified manufacturing.
The MAX20419 product line delivers integrated, ASIL-compliant power solutions for next-generation automotive ADAS and infotainment systems, emphasizing diagnostic integrity, thermal robustness, and minimal external component count.
FAQ
What is the factory-preset output voltage configuration for MAX20419ATGL/V+T?
The MAX20419ATGL/V+T has OUT1 factory-set to 5.0V (boost), while OUT2 and OUT3 are factory-programmed within the 0.8V–3.8V range in 25mV steps. The specific buck voltages for this variant are documented in the Analog Devices ordering guide as 1.1V and 1.8V, matching common SoC core and memory rail requirements.
Does MAX20419ATGL/V+T support independent power sequencing?
Yes, MAX20419ATGL/V+T provides three dedicated enable inputs (EN1, EN2, EN3) and three independent open-drain RESET outputs (RESET1–RESET3), enabling precise startup/shutdown sequencing and per-rail fault reporting without external logic or microcontroller intervention.
Is MAX20419ATGL/V+T qualified for automotive under-hood temperature operation?
Yes, MAX20419ATGL/V+T is specified for −40°C to +125°C ambient operation and qualified to AEC-Q100 Grade 1 standards, making it suitable for under-hood ADAS camera ECUs, radar front-ends, and other high-temperature automotive power applications.
How does the windowed watchdog function in MAX20419ATGL/V+T?
The MAX20419ATGL/V+T implements a windowed watchdog using WDI (input) and WDS (status output). The host processor must assert WDI within a configurable time window; missing or out-of-window pulses trigger WDS deassertion and internal fault flagging, enabling system-level safety monitoring per ISO 26262.
What package type and thermal characteristics does MAX20419ATGL/V+T use?
MAX20419ATGL/V+T uses a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (EP, pin 24). Its RθJA is 32°C/W and RθJC is 4.5°C/W, supporting >3.6A continuous output per buck channel with standard 2-layer PCB copper and thermal vias to internal ground plane.
MAX20419ATGL/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:
- 3
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.9V, 1.25V, 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 750mA, 2A, 3A
- 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)
MAX20419ATGL/V+T FAQ
1.How can I place an order for MAX20419ATGL/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGL/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 MAX20419ATGL/V+T reliable?
The price and inventory of MAX20419ATGL/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 MAX20419ATGL/V+T is usually 5 days.
3.What payment methods are accepted for MAX20419ATGL/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGL/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGL/V+T?
MAX20419ATGL/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGL/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 MAX20419ATGL/V+T?
For technical support, including MAX20419ATGL/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGL/V+T requirements.
6.How does Aetrix verify that MAX20419ATGL/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGL/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 MAX20419ATGL/V+T meets industry standards.
7.What is the process for return or replacement of MAX20419ATGL/V+T?
All MAX20419ATGL/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGL/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 MAX20419ATGL/V+T part is unused and in its original packaging.
Return procedure for MAX20419ATGL/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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