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Analog Devices Inc./Maxim Integrated MAX20419ATGB/V+T
- Part No.:
- MAX20419ATGB/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGB/V+T.pdf
- Description:
- IC REG BCK BST 1.25V TRPL 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,703
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Product details
Overview
MAX20419ATGB/V+T from Analog Devices is a high-efficiency, 3-output automotive-grade DC-DC converter IC featuring a synchronous 750mA boost regulator fixed at 5V (OUT1), and two synchronous buck converters each delivering up to 3.6A with factory-programmable outputs from 0.8V to 3.8V in 25mV steps (OUT2/OUT3). It operates from 3.0V to 5.5V input, achieves ±1.9% output accuracy on OUT1 and ±1.4% on OUT2/OUT3, and supports ASIL-C–compliant ADAS power domains.
For engineers reviewing the MAX20419ATGB/V+T datasheet, MAX20419ATGB/V+T pinout, MAX20419ATGB/V+T application, or MAX20419ATGB/V+T equivalent, key selection criteria include its 2.2MHz fixed-frequency PWM mode for EMI control, integrated low-RDS(ON) switches, programmable spread-spectrum modulation, individual RESET outputs, and diagnostic features including windowed watchdog and shorted-pin detection on RESET1–RESET3.
Technical Context
The MAX20419ATGB/V+T integrates three independent switching regulators-OUT1 as a fixed 5V boost stage, and OUT2/OUT3 as adjustable synchronous buck stages-with current-mode control, forced-PWM and skip-mode operation, and internal compensation. Its 2.2MHz switching frequency enables all-ceramic output filtering and compact layout.
Designed for ASIL-C functional safety compliance, it includes redundant voltage reference, fail-safe behavior on open pins, input overvoltage detection, and OV/UV monitoring with ±1.3% accuracy across all outputs and PV rail. Diagnostics cover shorted-pin detection on RESET[1:3], programmable watchdog timeout, and thermal shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery rails with cold-crank tolerance. |
| OUT1 Output | Fixed 5.0V @ 750mA - powers USB peripherals, sensors, or interface logic without external feedback components. |
| OUT2/OUT3 Outputs | 0.8V–3.8V @ 3.6A each in 25mV steps - factory-configured to match SoC core/I/O voltage requirements. |
| Output Accuracy | ±1.9% (OUT1), ±1.4% (OUT2/OUT3) - ensures stable supply under full load, line, and temperature variation (−40°C to +125°C). |
| Switching Frequency | 2.2MHz fixed - allows use of small 0.47µH inductors and ceramic capacitors, reducing board area and BOM count. |
| Protection Features | Overcurrent, overtemperature, input overvoltage, and shorted-pin detection on RESET[1:3] - enables robust fault handling in safety-critical systems. |
| Functional Safety | ASIL-C compliant with redundant reference and fail-safe open-pin response - meets ISO 26262 requirements for ADAS domain controllers. |
Pinout & Package
MAX20419ATGB/V+T is housed in a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (package code: TGB), optimized for automotive thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Individual enable inputs | Independent control of OUT1/OUT2/OUT3 startup sequencing and power-state management. |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low on undervoltage/overvoltage faults; shorted-pin detection prevents false resets during connector mating. |
| WDI, WDS | Watchdog input and status | Supports windowed watchdog functionality with configurable timeout for SoC-level fault recovery. |
| PV, PV_OV | Main input supply and OV sense | PV accepts 3.0V–5.5V input; PV_OV triggers shutdown if input exceeds safe threshold (e.g., load dump). |
| LX1–LX3 | Switch node outputs | Connect to external inductors; low-inductance routing critical for efficiency and EMI control at 2.2MHz. |
| PGND1–PGND3 | Power ground returns | Separated ground paths per regulator minimize cross-talk and improve transient response fidelity. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous boost + dual buck topology | Single-chip solution replaces ≥3 discrete regulators, reducing PCB area by >40% and eliminating external MOSFET gate drivers. |
| Programmable spread-spectrum modulation | Reduces peak radiated emissions by up to 10dB, easing CISPR-25 Class 5 compliance without added shielding. |
| Factory-configurable output voltages | Eliminates external resistor dividers and associated layout sensitivity; guarantees 25mV granularity and monotonic startup. |
| Individual RESET outputs with shorted-pin detection | Enables per-rail fault isolation in multi-domain SoCs; prevents latch-up during hot-plug or connector wear. |
| ASIL-C diagnostic coverage | Includes redundant reference, open-pin fail-safe, and OV/UV monitoring with ±1.3% accuracy - validated for use in camera ECU and radar domain controllers. |
Applications
| ADAS Camera Module Power | Radar SoC Core Supply |
|---|---|
Use Scenario: Dual-camera front-facing ADAS system requiring isolated, sequenced 5V, 1.2V, and 1.8V rails with fault reporting. IC Role / Device Role / Timing Role: Primary power management IC delivering regulated outputs, generating synchronized RESET signals, and monitoring rail health. Use Value: Enables single-chip power solution with ASIL-C diagnostics, eliminating need for external supervisors and discrete LDOs for bias rails. | Use Scenario: 77GHz radar processor needing tightly regulated 0.85V core and 1.1V I/O supplies with fast load-transient response. IC Role / Device Role / Timing Role: High-current synchronous buck regulator with 2.2MHz switching and current-mode control for <500ns transient recovery. Use Value: Delivers 3.6A per buck channel with ±1.4% accuracy across −40°C to +125°C, meeting AEC-Q100 Grade 0 requirements. |
| Infotainment Display Backlight | Automotive Gateway MCU Supply |
Use Scenario: TFT-LCD display with LED backlight requiring stable 5V boost supply and auxiliary 3.3V logic rail. IC Role / Device Role / Timing Role: Boost converter (OUT1) powers LED driver IC; buck channels supply display controller and touch interface. Use Value: Fixed 5V boost eliminates feedback network; 2.2MHz operation minimizes inductor size and audible noise in cabin environment. | Use Scenario: Central gateway ECU managing CAN FD, Ethernet, and LIN interfaces with multiple voltage domains. IC Role / Device Role / Timing Role: Multi-rail PMIC supplying 1.2V, 1.8V, and 3.3V to microcontroller, PHYs, and transceivers with independent enable and reset control. Use Value: Individual EN/RESET pins allow phased power-up and fault containment; ASIL-C diagnostics support functional safety partitioning. |
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 with integrated LDOs; 1.8MHz max switching frequency; no spread-spectrum modulation. | Targets central domain controllers with mixed analog/digital rails; lacks shorted-pin detection on RESET outputs. | Preferred when LDO integration is needed for noise-sensitive analog supplies, but requires external EMI mitigation. |
| MPQ4333GQ-AEC1 | Dual 3.5A buck only; no boost channel; 2.2MHz operation; no ASIL-C certification or watchdog. | Suitable for non-safety-critical SoC core/I/O supplies where 5V boost is provided externally. | Select when only dual-buck functionality is required and functional safety compliance is not mandated. |
Compared with TPS6594131RWER and MPQ4333GQ-AEC1, the MAX20419ATGB/V+T uniquely combines 5V boost + dual high-current buck, ASIL-C diagnostics, and spread-spectrum EMI reduction in a single 4mm × 4mm package-making it optimal for space-constrained, safety-compliant ADAS modules.
Availability
MAX20419ATGB/V+T is available at Aetrix Electronics and suitable for Advanced Driver-Assistance Systems (ADAS), infotainment display subsystems, and SoC power delivery requiring stable component supply, long-term automotive qualification, and functional safety support.
Supply support for MAX20419ATGB/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 precision and reliability.
The MAX20419ATGB/V+T belongs to Analog Devices' automotive-qualified PMIC portfolio, engineered specifically for ASIL-C–compliant ADAS domain controllers, radar processors, and camera modules demanding high integration, diagnostics, and thermal robustness.
FAQ
What is the operating temperature range for the MAX20419ATGB/V+T?
The MAX20419ATGB/V+T is qualified for −40°C to +125°C ambient operation, meeting AEC-Q100 Grade 0 requirements. This range is validated across all electrical parameters including output accuracy, switching frequency stability, and protection thresholds, making it suitable for under-hood and front-end ADAS applications where thermal stress is extreme.
Does the MAX20419ATGB/V+T support power sequencing between its three outputs?
Yes, the MAX20419ATGB/V+T supports independent power sequencing via dedicated EN1, EN2, and EN3 pins. Each enable input controls startup timing for OUT1 (boost), OUT2, and OUT3 (buck) respectively, allowing precise delay configuration through external RC networks or host MCU GPIOs-critical for SoC boot integrity in ADAS systems.
How does the MAX20419ATGB/V+T achieve ASIL-C compliance?
The MAX20419ATGB/V+T achieves ASIL-C compliance through redundant internal voltage references, fail-safe response to open pins, shorted-pin detection on all RESET outputs, input overvoltage detection, and ±1.3% OV/UV monitoring accuracy across all rails. These features are documented in Analog Devices' ISO 26262 safety manual and verified in the device's FMEDA report.
Can the output voltages of OUT2 and OUT3 be adjusted after manufacturing?
No, the output voltages of OUT2 and OUT3 on the MAX20419ATGB/V+T are factory-programmed and not user-adjustable in-circuit. They are set in 25mV increments from 0.8V to 3.8V per the ordering option (e.g., /V+T denotes specific preset values); no external resistors or digital interface is provided for runtime reconfiguration.
What package type and thermal characteristics does the MAX20419ATGB/V+T use?
The MAX20419ATGB/V+T uses a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (TGB). Its θJA is 36°C/W and θJC is 3.5°C/W, enabling >3.6A continuous output per buck channel at +85°C ambient with standard 2-layer PCB and 2oz copper, verified per Analog Devices' thermal characterization report.
MAX20419ATGB/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):
- 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)
MAX20419ATGB/V+T FAQ
1.How can I place an order for MAX20419ATGB/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGB/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 MAX20419ATGB/V+T reliable?
The price and inventory of MAX20419ATGB/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 MAX20419ATGB/V+T is usually 5 days.
3.What payment methods are accepted for MAX20419ATGB/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGB/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGB/V+T?
MAX20419ATGB/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGB/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 MAX20419ATGB/V+T?
For technical support, including MAX20419ATGB/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGB/V+T requirements.
6.How does Aetrix verify that MAX20419ATGB/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGB/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 MAX20419ATGB/V+T meets industry standards.
7.What is the process for return or replacement of MAX20419ATGB/V+T?
All MAX20419ATGB/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGB/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 MAX20419ATGB/V+T part is unused and in its original packaging.
Return procedure for MAX20419ATGB/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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