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Analog Devices Inc./Maxim Integrated MAX20419ATGC/V+T
- Part No.:
- MAX20419ATGC/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGC/V+T.pdf
- Description:
- IC REG BUCK BST ADJ TRPL 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,313
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Product details
Overview
MAX20419ATGC/V+T from Analog Devices is a high-efficiency, 3-output automotive-grade DC-DC converter IC featuring a synchronous 750mA boost regulator (fixed 5V), two synchronous buck converters (up to 3.6A each), ±1.4% output voltage accuracy on buck outputs, and ASIL-C compliance for safety-critical ADAS and SoC power systems.
For engineers reviewing the MAX20419ATGC/V+T datasheet, MAX20419ATGC/V+T pinout, MAX20419ATGC/V+T application, or MAX20419ATGC/V+T equivalent, key selection criteria include its 2.2MHz fixed-frequency PWM operation, factory-preset 0.8V–3.8V buck output range in 25mV steps, integrated spread-spectrum modulation, and diagnostic features including windowed watchdog and shorted-pin detection on RESET outputs.
Technical Context
The MAX20419ATGC/V+T integrates three independent switching regulators: one boost channel (OUT1 = 5V) and two buck channels (OUT2/OUT3 programmable 0.8V–3.8V), all operating from a common 3.0V–5.5V input. Its current-mode control architecture supports forced-PWM and skip modes, enabling stable transient response and >90% peak efficiency across load conditions.
Designed for ASIL-C compliance, it includes redundant internal references, open-pin fail-safe behavior, PV overvoltage detection, and individual RESET outputs with shorted-pin detection-enabling robust fault handling in automotive domain controllers and radar SoCs without external supervision circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery rail with cold-crank tolerance. |
| OUT1 Output | Fixed 5.0V @ 750mA - powers USB peripherals, sensors, or interface logic requiring regulated 5V. |
| OUT2/OUT3 Output | 0.8V–3.8V in 25mV steps @ up to 3.6A each - configurable to supply core voltages for ADAS processors or infotainment SoCs. |
| Output Accuracy | ±1.9% (OUT1), ±1.4% (OUT2/OUT3) - ensures tight regulation across -40°C to +125°C for functional safety compliance. |
| Switching Frequency | 2.2MHz fixed - enables use of small 0.47µH inductors and all-ceramic output capacitors, reducing board area. |
| Protection Features | Overcurrent, overtemperature, input overvoltage, and shorted-pin detection on RESET[1:3] - eliminates need for external fault monitoring circuits. |
| Diagnostic Capability | Programmable windowed watchdog, redundant reference, fail-safe on open pins - meets ASIL-C requirements for fault-detection coverage. |
Pinout & Package
Package: 24-pin TQFN (4mm × 4mm, 0.5mm pitch) with exposed thermal pad - optimized for automotive thermal cycling and high-power density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Individual enable inputs | Independent control of boost and both buck regulators; allows sequenced power-up and dynamic power gating. |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low when corresponding output is out-of-regulation; shorted-pin detection prevents false resets due to PCB trace faults. |
| WDI, WDS | Watchdog interface | Accepts windowed watchdog pulses; failure triggers system reset via dedicated WDT path independent of main regulators. |
| PV, PV_OV | Main input supply and OV monitor | PV supplies internal LDOs and bias; PV_OV provides dedicated overvoltage detection at input rail before regulator stage. |
| LX1–LX3 | Switch node outputs | Connect to external inductors; low RDS(ON) integrated FETs minimize conduction loss and simplify layout vs discrete solutions. |
| PGND1–PGND3 | Power ground returns | Separate ground paths per regulator reduce cross-talk and improve EMI performance in multi-rail systems. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Boost + Dual Buck Architecture | Single-chip solution replaces three discrete regulators, reducing BOM count and PCB footprint by >40% in ADAS ECU designs. |
| Factory-Preset Buck Outputs | Eliminates external resistor networks for VOUT setting-reduces calibration effort and improves long-term stability over temperature. |
| Spread-Spectrum Modulation | Reduces peak radiated emissions by >10dB at 2.2MHz fundamental, easing CISPR-25 Class 5 EMC certification. |
| ASIL-C Diagnostic Coverage | Includes redundant reference, open-pin fail-safe, and shorted-pin detection-enables ISO 26262-compliant system-level FMEDA without added ICs. |
| 2.2MHz Fixed Switching | Permits full-ceramic filtering (no electrolytics), enabling compact, high-reliability power stages suitable for under-hood placement. |
Applications
| ADAS Radar Module Power | Automotive Infotainment SoC Supply |
|---|---|
Use Scenario: Powers 77GHz radar transceiver SoC with multiple core, I/O, and analog supply rails under engine-bay thermal stress. IC Role / Device Role / Timing Role: Primary triple-rail power management IC delivering 5V (interface), 1.1V (core), and 1.8V (I/O) with synchronized sequencing and fault reporting. Use Value: Integrated diagnostics meet ASIL-C requirements; 2.2MHz operation minimizes inductor size for space-constrained front-bumper mounting. | Use Scenario: Supplies application processor, GPU, and display interface in head-unit infotainment system with dynamic DVFS demands. IC Role / Device Role / Timing Role: Central PMIC providing dynamically adjustable buck outputs with soft-start, individual enable control, and RESET signaling to SoC. Use Value: Factory-preset 25mV-step outputs eliminate trimming resistors; spread-spectrum reduces noise coupling into sensitive audio and video signal paths. |
| Domain Controller Power Hub | Camera ECU Power Management |
Use Scenario: Consolidates power delivery for zonal domain controller integrating Ethernet switch, MCU, and CAN FD interfaces. IC Role / Device Role / Timing Role: Multi-output regulator with independent EN/RESET signals enabling modular power domain isolation and wake-up coordination. Use Value: Individual PGND pins prevent ground bounce between high-speed digital and analog domains; PV_OV detection guards against alternator surge events. | Use Scenario: Powers image sensor, ISP, and serializer in rear-view or surround-view camera module operating at -40°C to +105°C. IC Role / Device Role / Timing Role: High-precision triple-output regulator with ±1.4% buck accuracy ensuring stable sensor bias and ISP clocking under wide temperature swings. Use Value: Fail-safe on open pins prevents undetected rail collapse; thermal shutdown protects against enclosed housing overheating during summer parking. |
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 |
|---|---|---|---|
| MPQ4333-AEC1 | Single 3.5A buck + dual 2A bucks; no boost channel; no ASIL-C diagnostics or watchdog. | Lacks 5V boost rail and failsafe diagnostics-suitable only for non-safety-critical infotainment rails. | Select when triple buck-only supply suffices and ASIL compliance is not required. |
| TPS659421-Q1 | Quad buck + LDOs; 2.1MHz switching; ASIL-B rated; no integrated boost or windowed watchdog. | Higher channel count but lower diagnostic coverage-requires external monitoring for ASIL-C systems. | Prefer for complex domain controllers needing >3 buck rails, but add external watchdog for ASIL-C. |
Compared with MPQ4333-AEC1 and TPS659421-Q1, the MAX20419ATGC/V+T uniquely delivers integrated 5V boost + dual high-current bucks with full ASIL-C diagnostics-including windowed watchdog and shorted-pin detection-enabling single-chip compliance in radar and camera ECUs without supplemental ICs.
Availability
MAX20419ATGC/V+T is available at Aetrix Electronics and suitable for Advanced Driver-Assistance Systems (ADAS), automotive infotainment, and SoC power applications requiring stable component supply, long-term automotive qualification, and functional safety support.
Supply support for MAX20419ATGC/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 MAX20419ATGC/V+T belongs to Analog Devices' automotive-qualified power management portfolio, engineered specifically for ASIL-C–compliant ADAS and domain controller power systems demanding high integration, diagnostics, and thermal resilience.
FAQ
What is the output voltage configuration for MAX20419ATGC/V+T?
The MAX20419ATGC/V+T has OUT1 factory-fixed at 5.0V (boost), while OUT2 and OUT3 are factory-configured within 0.8V–3.8V in 25mV steps. No external resistors are needed-the specific voltage pair is defined at manufacture per order code. The MAX20419ATGC/V+T datasheet's Ordering Information table lists available preset combinations.
Does MAX20419ATGC/V+T support ASIL-C compliance out of the box?
Yes, the MAX20419ATGC/V+T is designed and qualified to meet ASIL-C requirements per ISO 26262. It includes redundant internal references, open-pin fail-safe behavior, shorted-pin detection on RESET outputs, and a programmable windowed watchdog-all implemented without external components. Full FMEDA data and safety manual are provided by Analog Devices for the MAX20419ATGC/V+T.
What package type and thermal characteristics does MAX20419ATGC/V+T use?
The MAX20419ATGC/V+T uses a 24-pin TQFN package (4mm × 4mm, 0.5mm pitch) with exposed thermal pad. It operates across –40°C to +125°C ambient, with junction-to-board thermal resistance (ψJB) of 4.2°C/W and junction-to-case (ψJC) of 1.5°C/W. The exposed pad must be soldered to a thermal plane for reliable operation at full 3.6A load per buck channel.
Can MAX20419ATGC/V+T operate with all-ceramic output capacitors?
Yes, the MAX20419ATGC/V+T's 2.2MHz fixed-frequency operation and current-mode control enable stable regulation using only ceramic capacitors-no electrolytics or tantalums required. Typical designs use 22µF–47µF X7R/X5R ceramics per output, significantly improving lifetime and reliability in automotive environments.
How does the spread-spectrum feature of MAX20419ATGC/V+T improve EMC performance?
The MAX20419ATGC/V+T integrates programmable spread-spectrum frequency modulation that dithers the 2.2MHz switching frequency by ±6%, lowering peak radiated emissions by >10dB. This directly eases CISPR-25 Class 5 compliance in ADAS modules-especially critical for radar and camera ECUs where narrowband noise can interfere with RF or image processing.
MAX20419ATGC/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:
- Adjustable
- Number of Outputs:
- 3
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TQFN (4x4)
MAX20419ATGC/V+T FAQ
1.How can I place an order for MAX20419ATGC/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGC/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 MAX20419ATGC/V+T reliable?
The price and inventory of MAX20419ATGC/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 MAX20419ATGC/V+T is usually 5 days.
3.What payment methods are accepted for MAX20419ATGC/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGC/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGC/V+T?
MAX20419ATGC/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGC/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 MAX20419ATGC/V+T?
For technical support, including MAX20419ATGC/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGC/V+T requirements.
6.How does Aetrix verify that MAX20419ATGC/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGC/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 MAX20419ATGC/V+T meets industry standards.
7.What is the process for return or replacement of MAX20419ATGC/V+T?
All MAX20419ATGC/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGC/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 MAX20419ATGC/V+T part is unused and in its original packaging.
Return procedure for MAX20419ATGC/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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