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Analog Devices Inc./Maxim Integrated MAX20419ATGH/V+T
- Part No.:
- MAX20419ATGH/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGH/V+T.pdf
- Description:
- IC REG BUCK BST 0.8V 3.6A 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,331
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Product details
Overview
MAX20419ATGH/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 delivering up to 3.6A each with factory-programmable outputs from 0.8V to 3.8V (OUT2/OUT3). It operates from 3.0V–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 MAX20419ATGH/V+T datasheet, MAX20419ATGH/V+T pinout, MAX20419ATGH/V+T application, or MAX20419ATGH/V+T equivalent, key selection criteria 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 shorted-pin detection on RESET[1:3].
Technical Context
The MAX20419ATGH/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 references, open-pin fail-safe behavior, input overvoltage detection, and per-rail OV/UV monitoring with ±1.3% accuracy across OUT1–OUT3 and PV. All protections-including overtemperature, overcurrent, and short-circuit-are fully integrated and independently asserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery rail with transient tolerance |
| OUT1 Output | Fixed 5.0V @ 750mA - powers USB peripherals, sensors, or interface logic without external feedback |
| OUT2/OUT3 Output | 0.8V–3.8V in 25mV steps @ ≤3.6A each - factory-configured for SoC core/I/O rails |
| Output Accuracy | ±1.9% (OUT1), ±1.4% (OUT2/OUT3) - ensures stable voltage under full load, line, and –40°C to +125°C |
| Switching Frequency | 2.2MHz fixed - allows use of small 0.47µH inductors and all-ceramic capacitors, reducing board area |
| Protection Features | Overtemperature, overcurrent, short-circuit, input OV, open-pin fail-safe - eliminates need for external fault management circuitry |
| Functional Safety | ASIL-C compliant with redundant reference, windowed watchdog, and shorted-pin detection on RESET[1:3] - meets ISO 26262 requirements for ADAS domain controllers |
Pinout & Package
Package: 24-pin TQFN (4mm × 4mm, 0.5mm pitch) with exposed thermal pad (EP); RoHS-compliant, AEC-Q100 qualified Grade 1 (–40°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Individual enable inputs | Independent startup sequencing control for each regulator; active-high, CMOS-compatible |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low on OV/UV/fault; shorted-pin detection prevents false resets during connector mating |
| WDI, WDS | Watchdog input and strobe | Supports programmable windowed watchdog timer; failure triggers system-level reset via dedicated path |
| LX1, LX2, LX3 | Switch node outputs | Connect to external inductors; integrated high-side/low-side FETs eliminate external MOSFETs and drivers |
| PGND1, PGND2, PGND3 | Power ground returns | Separated ground paths minimize cross-regulator noise coupling and improve EMI performance |
| PV, PV_OV | Main supply input and OV sense | PV accepts 3.0V–5.5V input; PV_OV enables precise input overvoltage protection at 6.2V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous boost + dual buck topology | Single-chip solution replaces ≥3 discrete DC-DC ICs and reduces BOM count by >40% in ADAS domain ECUs |
| Programmable spread-spectrum modulation | Reduces peak radiated emissions by >10dB across 30–1000MHz band without external filters |
| Factory-configurable output voltages | Eliminates external resistor dividers and avoids calibration overhead in high-volume automotive production |
| Individual RESET outputs with shorted-pin detection | Enables fault-isolation in multi-rail systems; prevents false resets during hot-plug or harness vibration |
| Integrated current-mode PWM controller | Delivers <5µs load-transient response with no external compensation components required |
Applications
| ADAS Domain Controller Power | Automotive Infotainment SoC Supply |
|---|---|
Use Scenario: Powers vision processor, radar SoC, and sensor fusion MCU in L2+/L3 ADAS ECU with strict EMI and functional safety requirements. IC Role / Device Role / Timing Role: Primary triple-rail power manager providing isolated 5V (peripherals), 1.1V (core), and 3.3V (I/O) with synchronized soft-start and fault reporting. Use Value: ASIL-C compliance, spread-spectrum EMI reduction, and individual RESET assertion enable single-chip replacement of legacy multi-IC power trees. | Use Scenario: Supplies application processor, GPU, and display interface in head-unit infotainment system operating across cold-crank and load-dump conditions. IC Role / Device Role / Timing Role: Central PMIC delivering dynamically scaled core voltage (0.8–1.2V), I/O rail (3.3V), and USB host rail (5V) with coordinated enable sequencing. Use Value: 2.2MHz operation enables 0.47µH inductors and ceramic-only output caps, shrinking total power solution size by 35% vs. 500kHz alternatives. |
| Camera Module Power Management | Automotive Gateway ECU Power |
Use Scenario: Powers front-facing stereo camera module with image sensor, ISP, and MIPI PHY requiring tight voltage regulation and low noise. IC Role / Device Role / Timing Role: Provides ultra-low-noise 2.8V (sensor analog), 1.2V (ISP core), and 1.8V (MIPI I/O) with independent power-good signaling. Use Value: ±1.4% output accuracy and separated PGND pins ensure <10mV ripple on analog rails, preserving SNR in high-resolution imaging. | Use Scenario: Supplies multi-core gateway MCU, CAN FD transceivers, and Ethernet PHY in zonal architecture with diagnostics and redundancy. IC Role / Device Role / Timing Role: Triple-output regulator with watchdog supervision, input OV detection, and fail-safe open-pin behavior for critical communication subsystems. Use Value: Redundant reference and windowed watchdog meet ASIL-C diagnostic coverage targets without adding external safety monitors. |
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 only; no boost or triple-output capability; lacks ASIL-C certification and watchdog | Targeted at simpler single-rail ADAS sub-modules (e.g., radar transceiver only) | Select when only one regulated rail is needed and functional safety is not required |
| TPS659413-Q1 | Quad-buck + LDO PMIC; higher channel count but no integrated boost; requires external 5V source or separate boost IC | Used in high-end cockpit domain controllers needing >3 rails and LDOs for noise-sensitive analog supplies | Select when 5V must be sourced externally and additional LDOs are required for audio/RF sections |
Compared with MPQ4333-AEC1 and TPS659413-Q1, the MAX20419ATGH/V+T uniquely integrates a 5V boost stage with dual high-current bucks and ASIL-C–ready diagnostics in a single 4mm × 4mm package-enabling compact, safety-certified triple-rail power without external boost or safety co-processors.
Availability
MAX20419ATGH/V+T is available at Aetrix Electronics and suitable for Advanced Driver-Assistance Systems (ADAS), automotive infotainment SoC power, and camera module power management requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100 Grade 1 qualification.
Supply support for MAX20419ATGH/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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20419 belongs to Analog Devices' automotive power management IC portfolio, designed specifically to consolidate multiple rails, integrate functional safety diagnostics, and reduce EMI in ASIL-B/C domain controllers and sensor modules.
FAQ
What is the operating temperature range for the MAX20419ATGH/V+T?
The MAX20419ATGH/V+T is qualified per AEC-Q100 Grade 1 with an operating junction temperature range of –40°C to +125°C. This rating is validated across all electrical specifications, including output accuracy, switching frequency stability, and protection thresholds, making it suitable for under-hood and dashboard-mounted automotive applications where ambient temperatures exceed 105°C.
Does the MAX20419ATGH/V+T support power sequencing between its three outputs?
Yes, the MAX20419ATGH/V+T supports independent power sequencing via dedicated EN1, EN2, and EN3 pins. Each enable input accepts standard CMOS logic levels and can be driven by microcontroller GPIOs or discrete timing circuits to implement custom startup/shutdown order-for example, enabling OUT2 (core rail) before OUT3 (I/O rail) and OUT1 (5V peripheral rail) to meet SoC power-up requirements.
Can the output voltages of OUT2 and OUT3 be adjusted after PCB assembly?
No, the output voltages of OUT2 and OUT3 on the MAX20419ATGH/V+T are factory-programmed and non-adjustable in-circuit. They are set at wafer test using laser trimming or e-fuse technology and cannot be modified via I²C, SPI, or external resistors. Selection must be made at order time using the ordering guide's VOUT option codes (e.g., /V+ denotes 1.1V/3.3V configuration).
What protection features does the MAX20419ATGH/V+T include for automotive reliability?
The MAX20419ATGH/V+T includes overtemperature shutdown, cycle-by-cycle overcurrent limiting, short-circuit protection on all switch nodes, input overvoltage detection (6.2V threshold), and open-pin fail-safe behavior. Each RESET output also features shorted-pin detection to prevent false assertions during mechanical mating-critical for high-vibration automotive harness environments.
Is spread-spectrum modulation enabled by default on the MAX20419ATGH/V+T?
Yes, spread-spectrum frequency modulation is enabled by default on the MAX20419ATGH/V+T and requires no external configuration. It operates continuously during PWM mode to reduce peak radiated emissions across the 30–1000MHz band. The modulation depth and frequency deviation are internally fixed and optimized for automotive CISPR 25 Class 5 compliance without requiring layout changes or added filtering components.
MAX20419ATGH/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:
- 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)
MAX20419ATGH/V+T FAQ
1.How can I place an order for MAX20419ATGH/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGH/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 MAX20419ATGH/V+T reliable?
The price and inventory of MAX20419ATGH/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 MAX20419ATGH/V+T is usually 5 days.
3.What payment methods are accepted for MAX20419ATGH/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGH/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGH/V+T?
MAX20419ATGH/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGH/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 MAX20419ATGH/V+T?
For technical support, including MAX20419ATGH/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGH/V+T requirements.
6.How does Aetrix verify that MAX20419ATGH/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGH/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 MAX20419ATGH/V+T meets industry standards.
7.What is the process for return or replacement of MAX20419ATGH/V+T?
All MAX20419ATGH/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGH/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 MAX20419ATGH/V+T part is unused and in its original packaging.
Return procedure for MAX20419ATGH/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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