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Analog Devices Inc./Maxim Integrated MAX20049DATEB/VY+
- Part No.:
- MAX20049DATEB/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049DATEB/VY+.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:1,410
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Product details
Overview
MAX20049DATEB/VY+ from Analog Devices is a dual 2.2MHz, 1A synchronous step-down converter with integrated dual LDOs (150mA LDO3 and 400mA LDO4), designed as a single-chip quad-rail power solution for automotive camera modules. It supports 3.5V–17V input, delivers factory-set outputs including 3.1V/1.8V/2.8V/1.2V, and features 180° out-of-phase buck operation to minimize input ripple - deployed in surround-view, rear, and front ADAS camera systems.
For engineers reviewing the MAX20049DATEB/VY+ datasheet, MAX20049DATEB/VY+ pinout, MAX20049DATEB/VY+ application, or MAX20049DATEB/VY+ equivalent, key selection criteria include AEC-Q100 qualification, 500mV SUP1 hysteresis for long coax cable compatibility, spread-spectrum EMI reduction, and factory-configured voltage options eliminating external feedback resistors.
Technical Context
The MAX20049DATEB/VY+ integrates two fixed-frequency PWM buck converters operating at 2.2MHz (±3% spread-spectrum option) with 180° phase shift, enabling all-ceramic capacitor designs and compact PCB layouts. Each buck supports 0.9V–3.8V output with ±2% accuracy over –40°C to +125°C and features cycle-by-cycle current limiting and thermal shutdown with auto-recovery.
It includes two dedicated LDOs: LDO3 (150mA, 2.7V–3.3V, 350mV dropout at 100mA) powered from SUP1 or cascaded from Buck1/Buck2, and LDO4 (400mA, 1.0V–2.0V, 35mV dropout at 400mA) powered from Buck2. All four rails are monitored via a shared open-drain PGOOD signal with programmable OV/UV thresholds and 50µs debounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 17V - supports direct connection to power-over-coax cables without preregulation |
| Switching Frequency | 2.2MHz (typ), ±3% spread-spectrum - enables small inductors (3.3µH) and low-EMI ceramic-capacitor-only design |
| Buck Output Current | Up to 1.2A per channel - sufficient for image sensor and serializer rail loads in 5MP+ automotive cameras |
| LDO3 Output | 2.8V (factory-set), 150mA, ±2% accuracy - supplies low-noise bias to CMOS image sensors |
| LDO4 Output | 1.2V (factory-set), 400mA, ±2.5% accuracy - powers serializer ASICs and memory interfaces |
| PGOOD Monitoring | AND-combined across all four rails with 95% UV rising threshold and 102.5–115% OV rising threshold - ensures system-level power integrity before host boot |
| Operating Temperature | –40°C to +125°C ambient - qualified per AEC-Q100 Grade 0 for under-hood and camera housing environments |
Pinout & Package
MAX20049DATEB/VY+ is housed in a 16-pin side-wettable TQFN (3mm × 3mm) with exposed pad, optimized for automotive reflow and automated optical inspection (AOI). The package supports high thermal performance (θJA = 43.3°C/W on 4-layer board) and IPC Class 3 solder joint reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | PGND2 / PGND1 | Power ground return paths for Buck2 and Buck1; must be tied to AGND and thermal pad for low-impedance switching loop |
| 2, 15 | LX2 / LX1 | High-side switch node for Buck2/Buck1; connects to inductor; requires tight layout and 0.1µF BST capacitor to adjacent BST pin |
| 3, 14 | SUP2 / SUP1 | High-side driver supply inputs; each requires 2.2µF X7R ceramic bypass to PGND for stable gate drive |
| 4, 13 | BST2 / BST1 | Bootstrap supply for high-side MOSFET drivers; must be decoupled with 0.1µF ceramic between BST and respective LX |
| 5 | PGOOD | Open-drain power-good output; pulled low if any rail violates OV/UV thresholds; requires external 10kΩ pull-up |
| 6, 8 | OUTS2 / OUTS1 | Output voltage sense points for Buck2/Buck1; connect directly to respective output capacitors for accurate regulation |
| 7, 10 | OUTS4 / OUTS3 | Output terminals of LDO4 (400mA) and LDO3 (150mA); require 2.2µF and 4.7µF ceramic caps to AGND respectively |
| 9 | LDOIN3 | LDO3 input; accepts 2.9V–17V; can be supplied from SUP1 (for PSRR benefit) or cascaded from Buck1/Buck2 |
| 11 | AGND | Analog ground reference; must be connected to PGND1/PGND2 at single point near exposed pad |
| 12 | BIAS | Internal 5V linear regulator output; powers internal circuitry; bypassed with 4.7µF ceramic to AGND |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable TQFN package | Enables automated AOI inspection of solder joints - critical for automotive zero-defect manufacturing |
| 180° out-of-phase buck operation | Reduces RMS input current ripple by >70% versus in-phase operation, easing input capacitor and EMI filter sizing |
| 500mV SUP1 hysteresis | Prevents false toggling during slow-start conditions on long coax cables (up to 10m), eliminating need for external RC networks |
| Factory-programmed output voltages | Eliminates external feedback resistors and associated layout area - reduces BOM count and improves long-term stability |
| Integrated spread-spectrum modulation | Reduces peak EMI emissions by up to 10dB across 150kHz–1GHz band without requiring external components |
| Thermal shutdown with auto-recovery | Protects against sustained overload or poor heatsinking; resumes operation after junction cools by 15°C - avoids system latch-up |
Applications
| Rear-View Camera Module | Front-Facing ADAS Camera |
|---|---|
Use Scenario: Compact 12V-powered rear camera mounted on vehicle hatch, transmitting video over coax to infotainment display. IC Role / Device Role / Timing Role: Quad-rail power manager delivering 3.1V (image sensor), 1.8V (serializer), 2.8V (LDO3), and 1.2V (LDO4) with synchronized soft-start and PGOOD sequencing. Use Value: 500mV SUP1 hysteresis ensures reliable startup over 8m coax cable; side-wettable package meets IPC-A-610 Class 3 solder joint requirements. |
Use Scenario: Front-facing 8MP camera module in active grille shutter assembly, exposed to under-hood thermal cycling. IC Role / Device Role / Timing Role: Primary power IC providing AEC-Q100-qualified, -40°C to +125°C stable rails to sensor, ISP, and GMSL serializer. Use Value: 2.2MHz switching enables <3mm² total passive area; thermal shutdown with auto-recovery prevents field failures during thermal transients. |
| Surround-View Processing Unit | Driver Monitoring System (DMS) |
Use Scenario: Centralized 4-camera fusion ECU requiring tightly sequenced, low-noise power for multiple image pipelines. IC Role / Device Role / Timing Role: Dual-buck + dual-LDO architecture provides independent, monitored rails with 180° phase shift to suppress input ripple coupling between camera channels. Use Value: Factory-set 2.8V/1.2V outputs eliminate resistor tolerance drift; PGOOD AND logic ensures all four rails are valid before processor boot. |
Use Scenario: In-cabin IR camera monitoring driver attention, mounted near HVAC vents with wide ambient temperature swings. IC Role / Device Role / Timing Role: Supplies ultra-low-noise 2.8V (sensor analog core) and 1.2V (digital logic) with PSRR >88dB at 8kHz from LDO3/LDO4. Use Value: LDO3 powered from SUP1 achieves high PSRR for analog sensor bias; 100mV-step LDO4 allows precise matching to latest low-voltage vision processors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-rail automotive camera power supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20049CATEB/VY+ | Wider 4V–17V input range; supports lower 0.9V–1.9V buck outputs; same LDO3/LDO4 specs | Preferred for systems using 5V intermediate bus or requiring sub-1.2V digital rails | Select when input voltage may dip below 3.5V or when 1.0V–1.1V LDO4 output is required |
| MAX20049DATEB/V+ (non-VY+ variant) | Same electrical specs but standard TQFN (non-side-wettable); RoHS-compliant but lacks AOI-optimized leads | Suitable for non-automotive industrial camera modules where solder joint inspection is not mandated | Choose only if AEC-Q100 qualification and IPC Class 3 AOI are not required |
Compared with MAX20049CATEB/VY+, the MAX20049DATEB/VY+ offers tighter 3.5V minimum input and higher LDO3 voltage options (up to 3.3V), making it optimal for coax-fed 12V systems; versus the non-VY+ variant, its side-wettable leads ensure full automotive process compliance without sacrificing electrical performance.
Availability
MAX20049DATEB/VY+ is available at Aetrix Electronics and suitable for automotive camera modules, ADAS domain controllers, and in-cabin vision systems requiring stable component supply, AEC-Q100 qualification, and long-lifecycle support.
Supply support for MAX20049DATEB/VY+ 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 MAX20049 product line delivers highly integrated, AEC-Q100-qualified power management ICs specifically engineered for automotive camera systems - emphasizing compact size, EMI robustness, and seamless integration with GMSL/FPD-Link serializers.
FAQ
What is the input voltage range supported by the MAX20049DATEB/VY+?
The MAX20049DATEB/VY+ supports an input voltage range of 3.5V to 17V on both SUP1 and SUP2 pins. This range is specifically designed to accommodate power-over-coax cable drops in automotive camera applications, including nominal 12V systems with significant line loss. The 500mV hysteresis on SUP1 ensures stable operation during slow-rising input conditions typical of long coax runs.
Does the MAX20049DATEB/VY+ require external feedback resistors to set output voltages?
No, the MAX20049DATEB/VY+ does not require external feedback resistors. All output voltages - including Buck1 (e.g., 3.1V), Buck2 (e.g., 1.8V), LDO3 (e.g., 2.8V), and LDO4 (e.g., 1.2V) - are factory-programmed during wafer test. This eliminates resistor tolerance drift, saves PCB area, and improves long-term output stability across temperature and lifetime.
How is power sequencing managed on the MAX20049DATEB/VY+?
The MAX20049DATEB/VY+ implements fixed, factory-programmed sequencing: Buck1 starts first (3V/ms ramp), followed by LDO3 (100µs soft-start), then Buck2 (gated by Buck1 regulation), and finally LDO4 (120µs soft-start triggered by Buck2 regulation). Sequencing options - such as LDO3 initialization from Buck2 or LDO4 - are configurable at factory order time.
What protection features are integrated into the MAX20049DATEB/VY+?
The MAX20049DATEB/VY+ integrates cycle-by-cycle current limiting on both bucks, thermal shutdown with automatic recovery (trip at +175°C, hysteresis 15°C), overvoltage protection (OVP) that disables the high-side MOSFET, and comprehensive rail monitoring via PGOOD. All four outputs are continuously checked for OV/UV faults with programmable thresholds and 50µs debounce.
Is the MAX20049DATEB/VY+ qualified for automotive use?
Yes, the MAX20049DATEB/VY+ is AEC-Q100 qualified (Grade 0) and specified for operation from –40°C to +125°C ambient temperature. Its side-wettable TQFN package, 16-pin layout, and built-in diagnostics (PGOOD, thermal monitoring, OV/UV detection) meet stringent automotive reliability and functional safety requirements for camera module deployment.
MAX20049DATEB/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Converter, Digital Still Cameras
- Voltage - Input:
- 5V ~ 17V
- Number of Outputs:
- 4
- Voltage - Output:
- 1.2V, 1.8V, 2.8V, 2.8V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-SW-TQFN (3x3)
MAX20049DATEB/VY+ FAQ
1.How can I place an order for MAX20049DATEB/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049DATEB/VY+ 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 MAX20049DATEB/VY+ reliable?
The price and inventory of MAX20049DATEB/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20049DATEB/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20049DATEB/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049DATEB/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049DATEB/VY+?
MAX20049DATEB/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049DATEB/VY+ 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 MAX20049DATEB/VY+?
For technical support, including MAX20049DATEB/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049DATEB/VY+ requirements.
6.How does Aetrix verify that MAX20049DATEB/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20049DATEB/VY+ 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 MAX20049DATEB/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20049DATEB/VY+?
All MAX20049DATEB/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049DATEB/VY+, 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 MAX20049DATEB/VY+ part is unused and in its original packaging.
Return procedure for MAX20049DATEB/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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