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Analog Devices Inc./Maxim Integrated MAX20419ATGK/V+
- Part No.:
- MAX20419ATGK/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGK/V+.pdf
- Description:
- IC REG BUCK BST 0.8V 3.6A 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,154
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Product details
Overview
MAX20419ATGK/V+ 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 accuracy on buck outputs, ±1.9% on boost, and ASIL-C compliance for ADAS power domains.
For engineers reviewing the MAX20419ATGK/V+ datasheet, MAX20419ATGK/V+ pinout, MAX20419ATGK/V+ application, or MAX20419ATGK/V+ equivalent, key selection criteria include factory-preset voltage options, 2.2MHz fixed-frequency PWM operation enabling all-ceramic designs, programmable spread-spectrum EMI reduction, and integrated diagnostics for functional safety-critical SoC rails.
Technical Context
The MAX20419ATGK/V+ employs current-mode control across all three regulators, supporting forced-PWM, skip-mode, and true shutdown for dynamic efficiency optimization. Its dual-buck architecture shares no internal coupling-each output operates independently with dedicated feedback loops, current sensing, and thermal monitoring.
ASIL-C compliance is achieved via redundant voltage references, open-pin fail-safe logic, shorted-pin detection on RESET outputs, and input overvoltage protection on PV. The 24-pin TQFN package integrates exposed thermal pad and supports -40°C to +125°C ambient operation without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | 1x boost (5V fixed), 2x buck (0.8V–3.8V programmable in 25mV steps) |
| Max Output Current | OUT1: 750mA; OUT2/OUT3: 3.6A each - enables single-chip SoC core/I/O rail delivery |
| Output Voltage Accuracy | ±1.9% (OUT1), ±1.4% (OUT2/OUT3) over line/load/temp - meets tight SoC VDD tolerance requirements |
| Switching Frequency | 2.2MHz fixed - allows use of small 0.47µH inductors and all-ceramic output caps |
| Operating Input Range | 3.0V to 5.5V - compatible with automotive 3.3V/5V supply domains and battery backup paths |
| Temperature Range | -40°C to +125°C - qualified for under-hood ADAS ECU placement |
| EMI Reduction | Programmable spread-spectrum modulation - reduces peak radiated emissions without external filters |
Pinout & Package
MAX20419ATGK/V+ uses a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (pin 24 = GND_EP). Pin functions are validated per Analog Devices DS19-100255 Rev 17.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Individual enable inputs | Independent power sequencing control for each regulator output |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Active-low reset assertion per output; shorted-pin detection prevents false resets |
| WDI, WDS | Watchdog interface | Windowed watchdog support with configurable timeout and fault response |
| PV, PV_OV | Main input supply and OV monitor | PV powers internal circuitry; PV_OV triggers shutdown at >5.85V (typ) |
| LX1–LX3 | Switch node terminals | Connect to external inductors; require low-inductance layout for EMI control |
| PGND1–PGND3 | Power ground returns | Separated grounds per regulator minimize cross-talk and improve transient response |
Key Features
| Feature | Design Value |
|---|---|
| Factory-preset output voltages | Eliminates external resistor dividers; reduces BOM count and layout area for production variants |
| ASIL-C diagnostic suite | Redundant reference, open-pin fail-safe, and shorted-pin detection on RESET lines ensure functional safety compliance without external monitoring ICs |
| 2.2MHz fixed-frequency PWM | Enables compact 0.47µH inductors and eliminates need for electrolytic or tantalum capacitors |
| Programmable spread-spectrum modulation | Reduces 2.2MHz harmonic peaks by >10dB, easing CISPR-25 Class 5 radiated emissions certification |
| Individual soft-start and RESET outputs | Supports staggered power-up sequencing and independent system-level reset signaling per rail |
Applications
| ADAS Camera Module | Automotive Infotainment SoC |
|---|---|
Use Scenario: Dual-camera front-facing ADAS ECU requiring isolated 5V image sensor bias and 1.1V/0.85V SoC core/I/O rails. IC Role / Device Role / Timing Role: Single-package triple-output power management unit delivering sequenced, monitored, and fault-reporting rails. Use Value: Replaces discrete buck-boost + LDO solution, reducing board area by 42% and eliminating external OV/UV monitors. | Use Scenario: 8-core automotive infotainment processor needing tightly regulated 0.85V core, 1.1V GPU, and 5V USB PHY supplies. IC Role / Device Role / Timing Role: Primary SoC power controller with independent enable/reset and windowed watchdog supervision. Use Value: Meets ±1.4% output accuracy requirement for CPU core voltage while providing ASIL-C–compliant diagnostics. |
| Radar Processing Unit | Digital Cluster Display |
Use Scenario: 77GHz radar ECU with FPGA, ADC, and RF front-end requiring clean, low-noise 1.2V, 1.8V, and 5V supplies. IC Role / Device Role / Timing Role: High-PSRR, low-ripple DC-DC source with 2.2MHz switching to avoid interference with RF bands. Use Value: Spread-spectrum modulation suppresses 2.2MHz harmonics near critical 77GHz band edges, avoiding costly shielding. | Use Scenario: TFT-LCD digital instrument cluster needing 3.3V display logic, 5V backlight driver, and 1.2V MCU core. IC Role / Device Role / Timing Role: Centralized power hub with individual soft-start timing to prevent inrush-induced brownouts during boot. Use Value: Factory-preset voltages eliminate trimming resistors; PGND separation minimizes display flicker from digital switching noise. |
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 |
|---|---|---|---|
| TPS659424RHBR | 4-output (3 buck + 1 LDO), 1.8V–3.3V buck range only; no integrated boost; I2C-configurable but no spread-spectrum | Requires external boost for 5V rails; better suited for pure buck-only SoC domains | Select when I2C-based dynamic voltage scaling is required and 5V generation is handled externally |
| MPQ4333GR-AEC1 | Single 3.6A buck; no boost, no multi-output integration; AEC-Q100 Grade 1 only (not ASIL-C) | Lacks redundancy, diagnostics, and multi-rail coordination - needs companion ICs for full ADAS functionality | Select for cost-sensitive, non-safety-critical 3.3V/1.2V point-of-load where ASIL-C is not mandated |
Compared with TPS659424RHBR and MPQ4333GR-AEC1, the MAX20419ATGK/V+ uniquely integrates boost + dual buck + ASIL-C diagnostics in one 4mm × 4mm package, eliminating inter-IC communication overhead and reducing total solution size by ≥35% for ADAS camera/radar modules.
Availability
MAX20419ATGK/V+ is available at Aetrix Electronics and suitable for advanced driver-assistance systems (ADAS), automotive infotainment, and radar processing units requiring stable component supply, long-term automotive qualification, and functional safety compliance.
Supply support for MAX20419ATGK/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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20419ATGK/V+ belongs to Analog Devices' automotive power management IC portfolio, designed specifically to consolidate multiple SoC and sensor rails into single-chip ASIL-C–compliant solutions for next-generation ADAS and autonomous driving platforms.
FAQ
What is the input voltage range supported by the MAX20419ATGK/V+?
The MAX20419ATGK/V+ operates from a 3.0V to 5.5V input supply voltage, making it compatible with standard automotive 3.3V and 5V domains, including battery-backed and post-regulated sources. This range ensures robust startup and regulation across cold-crank and load-dump conditions typical in 12V vehicle electrical systems. The PV_OV pin provides overvoltage protection above 5.85V (typical) to safeguard internal circuitry.
Does the MAX20419ATGK/V+ support functional safety standards like ISO 26262?
Yes, the MAX20419ATGK/V+ is designed to meet ASIL-C requirements per ISO 26262. It incorporates redundant voltage references, open-pin fail-safe logic, shorted-pin detection on RESET outputs, and input overvoltage monitoring. These features are validated in the device's safety manual (Analog Devices UG-1925) and enable use in safety-critical ADAS power domains without requiring external safety monitors.
Can the output voltages of the MAX20419ATGK/V+ be adjusted after manufacturing?
No, the MAX20419ATGK/V+ features factory-preset output voltages - OUT1 is fixed at 5.0V, while OUT2 and OUT3 are set at specific values within the 0.8V–3.8V range in 25mV increments per ordering option (e.g., MAX20419ATGK/V+ = 5V/1.1V/0.85V). No external resistor programming or I2C interface is provided; voltage selection must be made at order time using the Selector Guide in DS19-100255.
What package type and thermal characteristics does the MAX20419ATGK/V+ use?
The MAX20419ATGK/V+ uses a 24-pin, 4mm × 4mm TQFN package with exposed thermal pad (pin 24 = GND_EP). It is rated for -40°C to +125°C ambient operation and supports continuous full-load performance across this range when mounted on a 2-layer PCB with ≥2 in² copper pour and thermal vias to inner ground planes per Analog Devices layout guidelines in DS19-100255.
How does the MAX20419ATGK/V+ reduce electromagnetic interference (EMI)?
The MAX20419ATGK/V+ reduces EMI through programmable spread-spectrum frequency modulation (SSFM) of its 2.2MHz switching clock, lowering peak radiated emissions by >10dB. Combined with 2.2MHz operation enabling small, low-ESR ceramic capacitors and optimized LX pin layout, this meets CISPR-25 Class 5 requirements without added ferrite beads or metal shielding in typical automotive layouts.
MAX20419ATGK/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:
- 1
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TQFN (4x4)
MAX20419ATGK/V+ FAQ
1.How can I place an order for MAX20419ATGK/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGK/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 MAX20419ATGK/V+ reliable?
The price and inventory of MAX20419ATGK/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20419ATGK/V+ is usually 5 days.
3.What payment methods are accepted for MAX20419ATGK/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGK/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGK/V+?
MAX20419ATGK/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGK/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 MAX20419ATGK/V+?
For technical support, including MAX20419ATGK/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGK/V+ requirements.
6.How does Aetrix verify that MAX20419ATGK/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGK/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 MAX20419ATGK/V+ meets industry standards.
7.What is the process for return or replacement of MAX20419ATGK/V+?
All MAX20419ATGK/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGK/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 MAX20419ATGK/V+ part is unused and in its original packaging.
Return procedure for MAX20419ATGK/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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