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Analog Devices Inc./Maxim Integrated MAX20049ATEK/VY+
- Part No.:
- MAX20049ATEK/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049ATEK/VY+.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:1,450
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Product details
Overview
The MAX20049ATEK/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 supply for automotive camera modules. It operates from 3.5V to 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 MAX20049ATEK/VY+ datasheet, MAX20049ATEK/VY+ pinout, MAX20049ATEK/VY+ application, or MAX20049ATEK/VY+ equivalent, key selection considerations include its AEC-Q100 qualification, 500mV SUP1 hysteresis for long coax cable support, fixed-output voltage options without external resistors, and integrated overvoltage/undervoltage monitoring across all four rails.
Technical Context
The MAX20049ATEK/VY+ integrates two independent PWM buck converters operating at 2.2MHz (±3% spread-spectrum option) with 180° phase shift, plus two low-noise PMOS/NMOS LDOs - LDO3 powered from SUP1 or cascaded from Buck1/Buck2, and LDO4 powered from Buck2. All regulators feature internal soft-start, cycle-by-cycle current limiting, and thermal shutdown with auto-recovery.
Voltage monitoring is implemented per rail with programmable OV/UV thresholds (e.g., 95% UV rising, 108% OV falling), and PGOOD asserts open-drain low when any output violates regulation. The BIAS regulator (5V, 20mA) powers internal circuitry and enables UVLO at 3.1V (rising), while SUP1 UVLO threshold is 5V with 500mV hysteresis - critical for stable startup over lossy coax cables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 17V - supports direct connection to power-over-coax infrastructure with 500mV hysteresis for slow-start stability. |
| Buck Switching Frequency | 2.2MHz (typ), ±3% spread-spectrum - enables compact all-ceramic filter design and reduces EMI peak emissions. |
| Buck Output Current | Up to 1.2A per channel - sufficient for image sensor core and serializer rails without external current boosting. |
| LDO3 Output | 2.7V–3.3V, 150mA - factory-set low-noise supply for CMOS image sensors; PSRR = 88dB @ 8kHz. |
| LDO4 Output | 1.0V–2.0V (100mV steps), 400mA - optimized for serializer/memory I/O with 35mV dropout @ 400mA. |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 0 for under-hood and camera housing environments. |
| Package | 16-pin side-wettable TQFN (3mm × 3mm, exposed pad) - supports automated optical inspection (AOI) and robust thermal dissipation (θJC = 4°C/W). |
Pinout & Package
MAX20049ATEK/VY+ uses a 16-pin side-wettable TQFN package (3mm × 3mm, exposed thermal pad), optimized for automotive PCB assembly and thermal performance. Pin numbering follows top-view orientation with pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, EP | PGND2 / PGND1 / Exposed Pad | Power ground return paths and thermal interface - must be connected to solid PCB ground plane for EMI control and junction temperature management. |
| 2, 15 | LX2 / LX1 | Switching node for Buck2/Buck1 - high dv/dt node requiring minimized loop area; connects to external inductor and bootstrap capacitor. |
| 3, 14 | SUP2 / SUP1 | High-side switch supply inputs - each requires 2.2µF X7R ceramic bypass to PGND; SUP1 powers internal BIAS regulator. |
| 4, 13 | BST2 / BST1 | Bootstrap supply for high-side gate drivers - requires 0.1µF ceramic capacitor between BSTx and corresponding LXx. |
| 5 | PGOOD | Open-drain power-good monitor - pulled low if any output 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 feedback. |
| 7, 10 | OUTS4 / OUTS3 | LDO4/LDO3 output terminals - OUTS3 supplies image sensor analog rail; OUTS4 supplies serializer digital rail. |
| 9 | LDOIN3 | LDO3 input - accepts input from SUP1 (for PoC) or cascaded from OUTS1/OUTS2; requires 1µF ceramic decoupling. |
| 11 | AGND | Analog ground reference - tied to PGND at single point to avoid noise coupling into sensitive feedback paths. |
| 12 | BIAS | Internal 5V linear regulator output - powers control logic; requires 4.7µF ceramic bypass to AGND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Single-chip quad-rail solution | Integrates two 1.2A bucks + 150mA/400mA LDOs - eliminates discrete PMIC + LDO combinations, reducing BOM count and layout area by >40%. |
| Factory-programmed output voltages | No external resistors required - fixed 3.1V/1.8V/2.8V/1.2V configuration reduces design risk and accelerates time-to-sample. |
| 180° interleaved buck operation | Cuts input capacitor RMS current by ~30% versus parallel bucks - allows smaller 2.2µF X7R input caps instead of bulk electrolytics. |
| 500mV SUP1 hysteresis | Prevents oscillation during slow-voltage ramp on long coax cables - enables reliable startup with >10m cable runs at low cost. |
| AEC-Q100 Grade 0 qualification | Validated for −40°C to +125°C ambient operation - meets automotive camera module thermal and reliability requirements without derating. |
| Integrated rail monitoring & PGOOD | AND-logic monitoring of all four outputs with programmable OV/UV thresholds - simplifies system-level power sequencing and fault reporting. |
Applications
| Rear Camera Module | Front ADAS Camera |
|---|---|
Use Scenario: Compact rear-view camera mounted on vehicle tailgate, powered via coaxial cable from infotainment head unit. IC Role / Device Role / Timing Role: Quad-rail power manager delivering 3.1V (sensor analog), 1.8V (serializer), 2.8V (sensor I/O), and 1.2V (memory) from 12V PoC input. Use Value: Eliminates need for separate DC-DC + LDO stages; 500mV SUP1 hysteresis ensures stable startup despite voltage drop over 8m coax run. |
Use Scenario: Front-facing ADAS camera in bumper housing, subject to wide ambient temperature swings and EMI from radar systems. IC Role / Device Role / Timing Role: Primary power IC providing sequenced, monitored rails to CMOS image sensor and GMSL serializer under AEC-Q100 conditions. Use Value: 2.2MHz switching + spread-spectrum reduces conducted EMI in 5–30MHz band; thermal shutdown with auto-recovery maintains uptime during transient overheating. |
| Surround-View System | Driver Monitoring Camera |
Use Scenario: Four-camera surround-view system with centralized power distribution over coax; each camera uses identical power architecture. IC Role / Device Role / Timing Role: Standardized quad-rail supply enabling identical BOM across all four camera positions - simplifies inventory and calibration. Use Value: Factory-set voltages ensure consistent sensor biasing across cameras; PGOOD AND-logic enables system-level power validation before image stitching. |
Use Scenario: In-cabin driver monitoring camera requiring ultra-low noise for eye-tracking algorithms and strict thermal limits. IC Role / Device Role / Timing Role: Low-noise power source where LDO3 (2.8V, 88dB PSRR @ 8kHz) supplies image sensor analog domain independently of noisy digital rails. Use Value: Separation of LDO3 input (from SUP1) avoids coupling noise from Buck2 switching into analog sensor path - preserves SNR > 65dB. |
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 |
|---|---|---|---|
| MAX20090ATP/VY+ | Single 3A buck + dual LDOs; no second buck; 2.1MHz switching; supports 2.8V–5.0V LDO outputs only. | Lacks independent second buck - unsuitable for designs requiring isolated 1.8V/1.2V rails with separate sequencing control. | Select when only one high-current rail (e.g., 3.3V @ 3A) plus two LDOs are needed; lower channel count reduces complexity but sacrifices flexibility. |
| TPS653211AQDAPRQ1 | Triple buck (2A/1.5A/1.5A) + single 300mA LDO; 2.2MHz; no integrated rail monitoring or PGOOD AND-logic. | Requires external comparators for multi-rail PGOOD; lacks 500mV hysteresis - less robust on long coax cables. | Choose for higher total current capacity and triple-buck flexibility, but expect added design effort for voltage monitoring and startup stability. |
Compared with MAX20090ATP/VY+ and TPS653211AQDAPRQ1, the MAX20049ATEK/VY+ uniquely combines dual independent bucks with dual LDOs, factory-set voltages, and integrated AND-logic PGOOD - making it optimal for space-constrained, coax-powered automotive cameras demanding minimal external components and guaranteed startup behavior.
Availability
MAX20049ATEK/VY+ is available at Aetrix Electronics and suitable for automotive camera modules, ADAS surround-view systems, and in-cabin driver monitoring applications requiring stable component supply, AEC-Q100 compliance, and production-ready power architecture.
Supply support for MAX20049ATEK/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 consumer markets.
The MAX20049ATEK/VY+ belongs to Analog Devices' automotive power management portfolio, engineered specifically to consolidate power delivery for next-generation camera modules - reducing size, improving EMI robustness, and eliminating discrete sequencing components.
FAQ
What is the input voltage range supported by the MAX20049ATEK/VY+?
The MAX20049ATEK/VY+ supports an input voltage range of 3.5V to 17V, enabling direct connection to automotive battery rails and power-over-coax (PoC) infrastructure. Its 500mV hysteresis on SUP1 ensures stable startup even with significant voltage drop across long, low-cost coax cables - a key requirement for rear and surround-view camera installations.
Does the MAX20049ATEK/VY+ require external feedback resistors to set output voltages?
No, the MAX20049ATEK/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 placement errors, reduces PCB area, and guarantees tight voltage accuracy (±2%) across temperature and load.
How does the MAX20049ATEK/VY+ handle power sequencing between its four outputs?
The MAX20049ATEK/VY+ implements fixed, factory-configured 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 after Buck2 regulation). This ensures proper biasing order for image sensors and serializers without external timing components.
Is the MAX20049ATEK/VY+ qualified for automotive applications?
Yes, the MAX20049ATEK/VY+ is AEC-Q100 qualified (Grade 0) and specified for operation from −40°C to +125°C ambient temperature. It includes automotive-grade protection features - thermal shutdown with auto-recovery, cycle-by-cycle current limiting, overvoltage protection, and robust UVLO hysteresis - meeting stringent reliability requirements for camera modules in harsh vehicle environments.
What package type does the MAX20049ATEK/VY+ use, and why is it suitable for automotive camera designs?
The MAX20049ATEK/VY+ uses a 16-pin side-wettable TQFN (3mm × 3mm) with exposed thermal pad. This package enables automated optical inspection (AOI) of solder joints - critical for zero-defect manufacturing in automotive - and provides low thermal resistance (θJC = 4°C/W) to dissipate heat in sealed camera housings without heatsinks.
MAX20049ATEK/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:
- 1.1V, 1.8V, 2.9V, 3.3V
- 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)
MAX20049ATEK/VY+ FAQ
1.How can I place an order for MAX20049ATEK/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049ATEK/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 MAX20049ATEK/VY+ reliable?
The price and inventory of MAX20049ATEK/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20049ATEK/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20049ATEK/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049ATEK/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049ATEK/VY+?
MAX20049ATEK/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049ATEK/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 MAX20049ATEK/VY+?
For technical support, including MAX20049ATEK/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049ATEK/VY+ requirements.
6.How does Aetrix verify that MAX20049ATEK/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20049ATEK/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 MAX20049ATEK/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20049ATEK/VY+?
All MAX20049ATEK/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049ATEK/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 MAX20049ATEK/VY+ part is unused and in its original packaging.
Return procedure for MAX20049ATEK/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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