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Analog Devices Inc./Maxim Integrated MAX20419ATGC/V+
- Part No.:
- MAX20419ATGC/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX20419ATGC/V+.pdf
- Description:
- IC REG BUCK BST ADJ TRPL 24TQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX20419ATGC/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 each delivering up to 3.6A with factory-programmable output voltages 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 MAX20419ATGC/V+ datasheet, MAX20419ATGC/V+ pinout, MAX20419ATGC/V+ application, or MAX20419ATGC/V+ equivalent, key selection considerations include its 2.2MHz fixed-frequency PWM mode, programmable spread-spectrum modulation, individual RESET outputs, integrated low-RDS(ON) switches, and diagnostic features including windowed watchdog, open-pin fail-safe, and shorted-pin detection on RESET1–RESET3.
Technical Context
The MAX20419ATGC/V+ integrates three independent switching regulators-OUT1 as a fixed 5V boost converter, and OUT2/OUT3 as adjustable synchronous buck converters-with current-mode control architecture enabling fast load-transient response and stable operation across -40°C to +125°C. Its 2.2MHz switching frequency enables all-ceramic capacitor designs and reduces EMI through spread-spectrum modulation.
ASIL-C compliance is achieved via redundant internal voltage references, independent OV/UV monitoring (±1.3% accuracy) on all outputs and PV rail, fail-safe behavior on open pins, and short-circuit detection on RESET outputs-enabling use in safety-critical automotive subsystems without external redundancy components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery or post-LDO supply rails without external pre-regulation. |
| OUT1 Output | Fixed 5.0V @ 750mA - delivers stable USB-peripheral or interface rail with ±1.9% accuracy over line/load/temp. |
| OUT2/OUT3 Output | 0.8V–3.8V @ 3.6A each - factory-configurable in 25mV steps for SoC core/I/O rails with ±1.4% accuracy. |
| Switching Frequency | 2.2MHz fixed - enables compact 0.47µH inductors and all-ceramic output capacitors; minimizes board area. |
| Accuracy (OV/UV Monitor) | ±1.3% on OUT1–OUT3 and PV - ensures precise fault detection for ASIL-C system-level diagnostics. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood and ADAS ECU environments per AEC-Q100 Grade 1. |
| Protection Features | Overcurrent, overtemperature, input overvoltage, open-pin fail-safe, RESET pin short detection - eliminates need for discrete protection circuitry. |
Pinout & Package
Package: 24-pin TQFN (4mm × 4mm, 0.5mm pitch) with exposed thermal pad - optimized for automotive thermal dissipation and space-constrained ADAS modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Individual enable inputs | Independent sequencing control for OUT1–OUT3; supports flexible power-up/down timing in multi-rail SoC systems. |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Active-low reset signals with short-circuit detection; each monitors its respective output's regulation status. |
| WDI, WDS | Watchdog interface | Windowed watchdog input and strobe enable - provides fail-safe timeout supervision for host processor or MCU. |
| PV, PV_OV | Main input supply and OV monitor | PV accepts 3.0V–5.5V input; PV_OV triggers fault when input exceeds threshold (±1.3% accuracy). |
| LX1–LX3 | Switch node outputs | Internal FET switch nodes - require external inductor and ceramic capacitor; low RDS(ON) minimizes conduction loss. |
| PGND1–PGND3 | Power ground returns | Dedicated power ground pins per channel - reduce cross-talk and improve EMI performance in multi-output layout. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous boost + dual buck topology | Single-chip solution replaces ≥3 discrete regulators and associated passives - reduces BOM count by >40% and PCB area by ~35%. |
| Factory-programmable output voltages | OUT2/OUT3 set at wafer level in 25mV increments - eliminates external resistor networks and improves long-term voltage stability. |
| Programmable spread-spectrum modulation | Reduces peak radiated emissions by >10dB across 100kHz–1GHz - simplifies EMC validation for automotive Tier-1 submissions. |
| ASIL-C–compliant diagnostics | Integrated redundant reference, open-pin fail-safe, and RESET pin short detection - satisfies ISO 26262 hardware safety requirements without external monitoring ICs. |
| 2.2MHz forced-PWM + skip mode | Maintains tight regulation during transients while achieving >92% efficiency at light loads - extends battery runtime in always-on ADAS modules. |
Applications
| ADAS Camera Module Power | Automotive Infotainment SoC Supply |
|---|---|
Use Scenario: Dual-camera front-facing ADAS module requiring isolated 5V for image sensors and 1.1V/1.8V for ISP/FPGA logic rails. IC Role / Device Role / Timing Role: Primary triple-rail power management IC providing sequenced, monitored, and fault-reporting power delivery. Use Value: Enables single-chip power solution with built-in RESET assertion and watchdog supervision - reduces system-level failure modes and meets ASIL-C diagnostic coverage targets. | Use Scenario: Central infotainment head unit powering application processor (1.0V core), GPU (1.1V), and DDR memory I/O (1.8V) from 5V intermediate bus. IC Role / Device Role / Timing Role: High-current, multi-output DC-DC controller managing dynamic load steps and thermal throttling events. Use Value: Delivers 3.6A per buck channel with <50mV undershoot during 2A/µs load transients - maintains SoC functional integrity during video decode bursts. |
| Radar ECU Core Voltage Regulation | Domain Controller Safety Monitor Rail |
Use Scenario: 77GHz radar ECU needing clean, low-noise 1.2V core supply and 3.3V analog supply with strict ripple limits (<10mVPP). IC Role / Device Role / Timing Role: Low-noise, high-PSRR power source using 2.2MHz fixed-frequency PWM and ceramic filtering. Use Value: Achieves <8mVPP output ripple at full load due to tight control loop and integrated low-RDS(ON) FETs - avoids RF front-end desensitization. | Use Scenario: Safety monitor subsystem requiring independently supervised 3.3V rail for lockstep MCUs and watchdog circuits. IC Role / Device Role / Timing Role: Redundant, ASIL-C–certified voltage supervisor with windowed watchdog and fail-safe open-pin response. Use Value: Provides hardware-enforced reset assertion within 10µs of undervoltage detection - meets ISO 26262 FMEDA timing constraints for safety mechanisms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-output automotive DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6594121RWER | Quad-buck + LDO architecture; 1.8MHz max switching frequency; no integrated windowed watchdog. | Targets central domain controllers with higher channel count but lower diagnostic depth; lacks RESET pin short detection. | Preferred when >3 regulated rails needed and ASIL-B suffices; requires external watchdog for ASIL-C. |
| MPQ4333GQ-AEC1 | Dual-buck only (no boost); 2.2MHz operation; ±2% output accuracy; no ASIL-C certification or redundancy features. | Suitable for non-safety-critical infotainment I/O rails; no support for camera sensor 5V boost or safety diagnostics. | Select when cost-sensitive dual-rail design excludes ADAS safety requirements and 5V boost is handled externally. |
Compared with TPS6594121RWER and MPQ4333GQ-AEC1, the MAX20419ATGC/V+ uniquely combines 5V boost + dual buck, ASIL-C certification, windowed watchdog, and RESET pin diagnostics in one 4mm × 4mm package - making it the only drop-in solution for compact, safety-compliant ADAS camera and radar ECUs.
Availability
MAX20419ATGC/V+ is available at Aetrix Electronics and suitable for Advanced Driver-Assistance Systems (ADAS), automotive infotainment SoC power, and radar ECU applications requiring stable component supply, long-term automotive qualification, and ASIL-C–compliant power management.
Supply support for MAX20419ATGC/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 power management semiconductors, serving automotive, industrial, and communications markets with precision, reliability, and safety-certified solutions.
The MAX20419ATGC/V+ belongs to Analog Devices' automotive power management portfolio, designed specifically to consolidate multi-rail SoC and sensor power delivery in ASIL-C–rated ADAS and domain controller applications.
FAQ
What is the output voltage configuration flexibility of the MAX20419ATGC/V+?
The MAX20419ATGC/V+ has OUT1 factory-fixed at 5.0V, while OUT2 and OUT3 are factory-programmed in 25mV steps from 0.8V to 3.8V. No external resistors or digital interfaces are required to set these outputs - configuration occurs at wafer test. This ensures long-term stability and eliminates trimming errors common in resistor-based feedback networks. The MAX20419ATGC/V+ does not support in-system voltage reprogramming.
Does the MAX20419ATGC/V+ support power sequencing between its three outputs?
Yes, the MAX20419ATGC/V+ supports independent power sequencing via dedicated EN1, EN2, and EN3 pins. Each enable input controls its respective output (OUT1–OUT3) with internal soft-start, allowing precise turn-on/turn-off timing control. This capability is essential for SoC-based ADAS systems requiring strict voltage ramp order to prevent latch-up or brown-out conditions. The MAX20419ATGC/V+ does not require external sequencing ICs.
How does the MAX20419ATGC/V+ meet ASIL-C requirements?
The MAX20419ATGC/V+ meets ASIL-C through integrated redundant voltage references, independent ±1.3% OV/UV monitoring on all outputs and PV, open-pin fail-safe behavior, and short-circuit detection on RESET1–RESET3 pins. These hardware-level diagnostics eliminate reliance on external monitoring circuits. The MAX20419ATGC/V+ is AEC-Q100 Grade 1 qualified and documented in Analog Devices' ISO 26262-compliant hardware safety case.
What is the role of the WDI and WDS pins on the MAX20419ATGC/V+?
The WDI (Watchdog Input) and WDS (Watchdog Strobe) pins implement a windowed watchdog function that monitors host processor health. WDI accepts a periodic strobe signal; if pulses fall outside the programmed time window, the MAX20419ATGC/V+ asserts RESET outputs. WDS enables/disable of the watchdog window. This feature is integral to ASIL-C safety mechanisms and requires no external timer IC - a key differentiator of the MAX20419ATGC/V+.
Can the MAX20419ATGC/V+ operate with all-ceramic output capacitors?
Yes, the MAX20419ATGC/V+ is fully compatible with all-ceramic output capacitors due to its 2.2MHz fixed-frequency current-mode control architecture and integrated low-RDS(ON) MOSFETs. Typical designs use 22µF–47µF X5R/X7R ceramics per output, eliminating bulk electrolytics and reducing footprint. This capability is validated across temperature and lifetime in Analog Devices' automotive qualification testing for the MAX20419ATGC/V+.
MAX20419ATGC/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Strip
- 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+ FAQ
1.How can I place an order for MAX20419ATGC/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20419ATGC/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 MAX20419ATGC/V+ reliable?
The price and inventory of MAX20419ATGC/V+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20419ATGC/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20419ATGC/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20419ATGC/V+?
MAX20419ATGC/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20419ATGC/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 MAX20419ATGC/V+?
For technical support, including MAX20419ATGC/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20419ATGC/V+ requirements.
6.How does Aetrix verify that MAX20419ATGC/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20419ATGC/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 MAX20419ATGC/V+ meets industry standards.
7.What is the process for return or replacement of MAX20419ATGC/V+?
All MAX20419ATGC/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20419ATGC/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 MAX20419ATGC/V+ part is unused and in its original packaging.
Return procedure for MAX20419ATGC/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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