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Analog Devices Inc./Maxim Integrated MAX20419ATGF/V+
- Part No.:
- MAX20419ATGF/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGF/V+.pdf
- Description:
- IC REG BCK BST 1.25V TRPL 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,777
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Product details
Overview
MAX20419ATGF/V+ 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 delivering up to 3.6A each with factory-programmable outputs from 0.8V to 3.8V in 25mV steps. 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 systems.
For engineers reviewing the MAX20419ATGF/V+ datasheet, MAX20419ATGF/V+ pinout, MAX20419ATGF/V+ application, or MAX20419ATGF/V+ equivalent, key selection considerations include its 2.2MHz fixed-frequency PWM operation, integrated low-RDS(ON) switches, programmable spread-spectrum modulation, individual RESET outputs, and diagnostic features including windowed watchdog and open-pin fail-safe behavior.
Technical Context
The MAX20419ATGF/V+ integrates three independent switching regulators-OUT1 as a fixed 5V boost stage, and OUT2/OUT3 as digitally configurable synchronous buck stages-with current-mode control, forced-PWM and skip-mode operation, and internal compensation. Its 2.2MHz switching frequency enables compact all-ceramic filter designs while maintaining robust load-transient response.
Designed for functional safety, it includes redundant voltage references, input overvoltage detection, shorted-pin detection on all RESET outputs, and fail-safe behavior on open pins-features validated for ASIL-C compliance per ISO 26262. Output voltage monitoring accuracy is ±1.3% across OUT1–OUT3 and PV rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | 1x fixed 5V boost (750mA) + 2x adjustable buck (0.8V–3.8V, up to 3.6A each) |
| Input Voltage Range | 3.0V to 5.5V - supports direct battery-supplied automotive domains (e.g., 3.3V/5V rail generation from 12V via pre-regulator) |
| Output Accuracy | ±1.9% (OUT1), ±1.4% (OUT2/OUT3) - ensures stable SoC core/memory rail regulation across -40°C to +125°C |
| Switching Frequency | 2.2MHz fixed - enables use of small 0.47µH inductors and all-ceramic output capacitors without EMI filtering overhead |
| Protection Features | Overcurrent, overtemperature, input overvoltage, open-pin fail-safe, shorted-pin detection on RESET[1:3] - reduces need for external fault-handling circuitry |
| Functional Safety | ASIL-C compliant with redundant reference, windowed watchdog, and diagnostic coverage per ISO 26262 Part 5 |
| Operating Temperature | -40°C to +125°C - qualified for under-hood and ADAS ECU placement without derating |
Pinout & Package
Package: 24-pin TQFN (4mm × 4mm, 0.5mm pitch) with exposed thermal pad (EP). RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Enable inputs for OUT1, OUT2, OUT3 | Independent enable control allows staged power-up sequencing for multi-rail SoCs |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Individual power-good signals with shorted-pin detection - eliminates need for external reset supervisors |
| WDI, WDS | Watchdog input and status | Supports windowed watchdog functionality with configurable timeout; WDS indicates watchdog health status |
| PV, PV_OV | Main supply input and overvoltage monitor | PV accepts 3.0V–5.5V input; PV_OV triggers shutdown if input exceeds safe threshold |
| LX1–LX3 | Switch node outputs | Connect to external inductors; integrated low-RDS(ON) FETs reduce conduction loss and layout complexity |
| PGND1–PGND3 | Power ground returns | Dedicated ground paths per regulator minimize cross-talk and improve transient immunity |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous boost + dual buck topology | Single-chip solution replaces discrete PMIC + LDO combinations, reducing BOM count by ≥40% in ADAS domain controllers |
| Factory-configurable output voltages | 0.8V–3.8V in 25mV steps eliminates need for external resistor dividers and improves production yield consistency |
| Programmable spread-spectrum modulation | Reduces peak radiated emissions by >10dB at 2.2MHz fundamental, easing CISPR 25 Class 5 compliance |
| ASIL-C diagnostic coverage | Includes redundant reference, open-pin fail-safe, and shorted-pin detection - enables single-chip safety island for SoC power domains |
| Individual RESET outputs with monitoring | Each RESET line reports dedicated rail health, enabling granular fault isolation in multi-core SoC boot sequences |
Applications
| ADAS Sensor Fusion ECU | Automotive Infotainment Head Unit |
|---|---|
Use Scenario: Powering radar, camera, and LiDAR sensor interfaces requiring tightly regulated 1.2V, 1.8V, and 5V rails with fast transient response. IC Role / Device Role / Timing Role: Primary multi-rail power management IC supplying SoC I/O, memory, and peripheral interfaces. Use Value: 2.2MHz operation minimizes output capacitor size; ±1.4% accuracy ensures sensor ADC reference stability across temperature. | Use Scenario: Delivering clean, sequenced power to application processors, display drivers, and audio codecs in head units with strict EMI limits. IC Role / Device Role / Timing Role: Central PMIC managing core, GPU, and I/O voltage domains with independent enable and reset control. Use Value: Spread-spectrum modulation and all-ceramic design meet CISPR 25 Class 5 without shielding; individual RESETs simplify boot diagnostics. |
| Central Gateway Controller | Automotive Domain Controller |
Use Scenario: Providing isolated, monitored 3.3V and 5V rails for CAN FD transceivers, Ethernet PHYs, and secure boot modules. IC Role / Device Role / Timing Role: Safety-enhanced power source with input OV detection and fail-safe open-pin response. Use Value: ASIL-C compliance enables integration into gateway safety islands; PV_OV protection prevents damage from load-dump events. | Use Scenario: Supplying heterogeneous compute clusters (CPU, NPU, DSP) with independently controllable, high-accuracy rails. IC Role / Device Role / Timing Role: Multi-output DC-DC controller supporting dynamic voltage scaling and rail-specific power sequencing. Use Value: Factory-programmable 25mV steps allow precise matching to SoC VDD requirements; soft-start prevents inrush current during wake-up. |
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 |
|---|---|---|---|
| TPS659424RGER | 4-buck + 1-boost configuration; supports higher max current (4A per buck); no integrated windowed watchdog | Targeted at higher-power domain controllers; lacks ASIL-C diagnostic coverage for open-pin failure | Preferred when >3.6A per rail or additional buck channels are required; requires external safety monitoring |
| MPQ4333GQ-AEC1 | Dual buck only (no boost); 3.5A per channel; fixed 5V LDO instead of boost; no ASIL-C certification or watchdog | Suitable for cost-sensitive infotainment subsystems where 5V is available externally | Select when boost function is unnecessary and functional safety is not mandated; lower BOM cost but reduced feature set |
Compared with TPS659424RGER and MPQ4333GQ-AEC1, the MAX20419ATGF/V+ uniquely combines ASIL-C compliance, integrated windowed watchdog, and factory-programmable 25mV-step outputs in a 24-pin TQFN-enabling safer, smaller, and more production-consistent power delivery for ADAS SoCs without external supervision.
Availability
MAX20419ATGF/V+ is available at Aetrix Electronics and suitable for Advanced Driver-Assistance Systems (ADAS), automotive infotainment head units, and central domain controller designs requiring stable component supply, long-term automotive qualification, and functional safety support.
Supply support for MAX20419ATGF/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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20419ATGF/V+ belongs to Analog Devices' automotive-qualified power management portfolio, engineered specifically for ASIL-C–compliant ADAS and domain controller power architectures requiring high integration, precision regulation, and built-in diagnostics.
FAQ
What is the operating temperature range of the MAX20419ATGF/V+?
The MAX20419ATGF/V+ is rated for continuous operation from -40°C to +125°C ambient temperature. This full automotive grade rating is verified per AEC-Q100 Grade 1 requirements and supports placement in demanding locations such as ADAS sensor ECUs and under-dash domain controllers. The MAX20419ATGF/V+ maintains specified output accuracy and protection functionality across this entire range without derating.
Does the MAX20419ATGF/V+ support power sequencing between its three outputs?
Yes, the MAX20419ATGF/V+ supports independent power sequencing via separate EN1, EN2, and EN3 enable inputs. Each output can be turned on/off individually with controlled timing using external RC networks or microcontroller GPIOs. This capability is essential for proper SoC initialization in applications like automotive infotainment and domain controllers, and is fully supported in the MAX20419ATGF/V+ without requiring additional sequencing ICs.
Is the MAX20419ATGF/V+ pin-compatible with other devices in the MAX204xx family?
No, the MAX20419ATGF/V+ is not pin-compatible with other MAX204xx variants such as MAX20420 or MAX20421. While sharing the same 24-pin TQFN package footprint, pin assignments-including EN, RESET, LX, and diagnostic signals-are specific to the MAX20419ATGF/V+ and differ across the family. Board redesign is required when substituting between MAX204xx part numbers.
What type of output voltage programming does the MAX20419ATGF/V+ support?
The MAX20419ATGF/V+ supports factory-programmed output voltages for OUT2 and OUT3, set in 25mV increments from 0.8V to 3.8V. These values are laser-trimmed during manufacturing and cannot be adjusted in-circuit. OUT1 is fixed at 5.0V. No external resistive feedback network is needed, ensuring consistent voltage accuracy and eliminating board-level tuning components for the MAX20419ATGF/V+.
How does the MAX20419ATGF/V+ achieve ASIL-C compliance?
The MAX20419ATGF/V+ achieves ASIL-C compliance through integrated hardware-level safety mechanisms: redundant internal voltage references, open-pin fail-safe behavior, shorted-pin detection on all RESET outputs, input overvoltage monitoring (PV_OV), and a programmable windowed watchdog (WDI/WDS). These features are documented in Analog Devices' ISO 26262 safety manual and are implemented without software dependency-making the MAX20419ATGF/V+ suitable as a safety element in ADAS power domains.
MAX20419ATGF/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)
MAX20419ATGF/V+ FAQ
1.How can I place an order for MAX20419ATGF/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGF/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 MAX20419ATGF/V+ reliable?
The price and inventory of MAX20419ATGF/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20419ATGF/V+ is usually 5 days.
3.What payment methods are accepted for MAX20419ATGF/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGF/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGF/V+?
MAX20419ATGF/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGF/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 MAX20419ATGF/V+?
For technical support, including MAX20419ATGF/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGF/V+ requirements.
6.How does Aetrix verify that MAX20419ATGF/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGF/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 MAX20419ATGF/V+ meets industry standards.
7.What is the process for return or replacement of MAX20419ATGF/V+?
All MAX20419ATGF/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGF/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 MAX20419ATGF/V+ part is unused and in its original packaging.
Return procedure for MAX20419ATGF/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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