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Analog Devices Inc./Maxim Integrated MAX20049ATEE/VY+
- Part No.:
- MAX20049ATEE/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049ATEE/VY+.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:1,460
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Product details
Overview
The MAX20049ATEE/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 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-enabling compact coax-powered rear/surround camera designs.
For engineers reviewing the MAX20049ATEE/VY+ datasheet, MAX20049ATEE/VY+ pinout, MAX20049ATEE/VY+ application, or MAX20049ATEE/VY+ equivalent, key selection criteria include its AEC-Q100 qualification, 500mV SUP1 hysteresis for long-coax startup stability, all-ceramic capacitor compatibility via high-frequency operation, and factory-configured voltage options eliminating external feedback resistors.
Technical Context
The MAX20049ATEE/VY+ integrates two fixed-frequency PWM buck converters operating at 2.2MHz (±3% spread-spectrum option) with 180° phase shift, enabling low-input-ripple, small-inductor (3.3µH) designs. Each buck supports 0.9V–3.8V output with ±2% accuracy across –40°C to +125°C.
It embeds 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 feature independent overvoltage/undervoltage monitoring feeding a shared open-drain PGOOD signal.
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. |
| Buck Switching Frequency | 2.2MHz (typ), ±3% spread-spectrum - enables use of 3.3µH inductors and all-ceramic output filters. |
| Buck Output Current | Up to 1.2A per channel - sufficient for image sensor core and serializer rails in 5MP+ 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 I/O or memory interfaces with <100mV dropout. |
| PGOOD Monitoring | AND-combined undervoltage (95% threshold) and overvoltage (108% threshold) detection on all four outputs - ensures system-level power integrity before host processor boot. |
| Operating Temperature | –40°C to +125°C - qualified per AEC-Q100 Grade 0 for under-hood and exterior camera mounting. |
Pinout & Package
MAX20049ATEE/VY+ uses a 16-pin side-wettable TQFN package (3mm × 3mm, exposed pad), optimized for automotive thermal and solder-joint reliability. Pin assignment follows standard SW-TQFN layout with dedicated high-current PGND1/PGND2 and isolated AGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | PGND2 / PGND1 | Power ground return paths for Buck2 and Buck1; must be connected to common PCB ground plane with low-inductance routing. |
| 2, 15 | LX2 / LX1 | Switching node connections for external inductors; require tight loop layout with 0.1µF BST capacitors to minimize EMI. |
| 3, 14 | SUP2 / SUP1 | High-side switch supply inputs; each requires 2.2µF X7R ceramic bypass to PGND for stable gate drive. |
| 4, 13 | BST2 / BST1 | Bootstrap supplies for high-side MOSFET drivers; must be capacitively coupled to respective LX pins. |
| 5 | PGOOD | Open-drain power-good output; pulled low if any rail violates UV/OV thresholds - used for system enable sequencing. |
| 6, 8 | OUTS2 / OUTS1 | Output voltage sense points for Buck2 and Buck1; connect directly to respective output caps for accurate regulation. |
| 7, 10 | OUTS4 / OUTS3 | Regulated LDO4 and LDO3 outputs; require 2.2µF and 4.7µF ceramic caps respectively for PSRR and transient response. |
| 9 | LDOIN3 | LDO3 input; accepts 2.9V–17V - can be tied to SUP1 (for PoC) or OUTS1/OUTS2 (for cascaded low-noise supply). |
| 11 | AGND | Analog ground reference for internal comparators and regulators; must be joined to PGND at single point near EP. |
| 12 | BIAS | 5V internal LDO output powering control circuitry; requires 4.7µF ceramic bypass to ensure stable startup. |
Key Features
| Feature | Design Value |
|---|---|
| 180° out-of-phase buck operation | Reduces peak input current by ~30% and cuts required input capacitance vs. in-phase design. |
| 500mV SUP1 hysteresis | Prevents oscillation during slow-rising coax cable voltage ramps - eliminates need for external RC delay networks. |
| Factory-programmed output voltages | Removes external resistor dividers, saves PCB area, and guarantees ±2% tolerance without calibration. |
| Integrated BIAS regulator | 5V linear regulator powers internal logic from SUP1 - enables reliable startup even with marginal input voltage. |
| Thermal shutdown with auto-recovery | Shuts down at 175°C junction temp and resumes after 15°C cooldown - protects against sustained overload without manual reset. |
Applications
| Automotive Rear Camera Module | Surround-View Camera System |
|---|---|
Use Scenario: Compact 1/2.7" CMOS camera mounted on vehicle tailgate, powered via 12m coax cable from ECU. IC Role / Device Role / Timing Role: Quad-rail power manager delivering 3.1V (sensor analog), 1.8V (serializer), 2.8V (sensor IO), and 1.2V (memory) from single 12V PoC input. Use Value: 500mV SUP1 hysteresis ensures clean startup over long coax; 2.2MHz switching allows 3.3µH inductor and <10mm² total solution size. |
Use Scenario: Four-camera surround-view system requiring synchronized power-up and rail monitoring across all units. IC Role / Device Role / Timing Role: Primary power IC providing sequenced, monitored outputs with PGOOD AND logic to enable central domain controller only when all rails are valid. Use Value: Factory-set sequencing (Buck1 → LDO3 → Buck2 → LDO4) eliminates external timing components; shared PGOOD simplifies system-level fault reporting. |
| Front-Facing ADAS Camera | Driver Monitoring System (DMS) |
Use Scenario: High-resolution front camera operating in engine bay with ambient temperatures up to 105°C. IC Role / Device Role / Timing Role: AEC-Q100 Grade 0 power supply generating 2.9V (image sensor), 1.2V (ISP), 3.3V (interface), and 1.8V (memory) with thermal protection. Use Value: Junction-to-case thermal resistance of 4°C/W enables >1.5W dissipation without heatsink; 175°C thermal shutdown prevents latch-up in hot environments. |
Use Scenario: In-cabin DMS camera using low-light sensor requiring ultra-low-noise 2.8V supply with high PSRR. IC Role / Device Role / Timing Role: LDO3 provides 2.8V from Buck1 output, leveraging cascaded topology for >88dB PSRR at 8kHz to suppress switching noise. Use Value: Dedicated LDO3 input (LDOIN3) isolates noise-sensitive analog rail from digital switching nodes - improves SNR by ≥6dB vs. direct-buck supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-rail automotive power supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20090ATP/VY+ | Single 2.2MHz 2A buck + dual LDOs; no second buck channel; higher current per rail but fewer output rails. | Best for simpler camera systems needing only one high-current rail (e.g., 3.3V @ 2A) plus two LDOs - not suitable for independent dual-buck sequencing. | Select MAX20090ATP/VY+ when system requires >1.2A on primary rail and can consolidate secondary loads onto LDOs. |
| TPS650362ARSLR | 3.2MHz triple buck + single LDO; wider input (2.7V–5.5V); no AEC-Q100 qualification; lower max input voltage. | Targeted at non-automotive industrial cameras or infotainment displays - lacks PoC support and automotive temperature range. | Choose TPS650362ARSLR only for commercial-grade designs where 17V input and AEC-Q100 are not required. |
Compared with MAX20090ATP/VY+ and TPS650362ARSLR, the MAX20049ATEE/VY+ uniquely delivers dual independent 1.2A bucks with AEC-Q100 qualification and 17V PoC input support - making it the only option for cost-sensitive, space-constrained automotive surround-view systems requiring four precisely sequenced, monitored rails.
Availability
MAX20049ATEE/VY+ is available at Aetrix Electronics and suitable for automotive rear camera modules, surround-view systems, and front ADAS cameras requiring stable component supply, AEC-Q100 compliance, and long-cable power-over-coax capability.
Supply support for MAX20049ATEE/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 MAX20049ATEE/VY+ belongs to Analog Devices' automotive power management portfolio, engineered specifically to replace multi-chip discrete solutions in camera module power supplies - emphasizing integration, AEC-Q100 reliability, and coax-cable compatibility.
FAQ
What is the input voltage range supported by the MAX20049ATEE/VY+?
The MAX20049ATEE/VY+ supports an input voltage range of 3.5V to 17V on both SUP1 and SUP2 pins. This wide range enables direct connection to automotive battery rails and long power-over-coax cables without external pre-regulation. The 500mV hysteresis on SUP1 ensures stable startup even with slow-rising coax voltages - a critical feature confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables.
Does the MAX20049ATEE/VY+ require external feedback resistors to set output voltages?
No, the MAX20049ATEE/VY+ does not require external feedback resistors. All output voltages - including Buck1, Buck2, LDO3, and LDO4 - are factory-programmed during wafer test. The datasheet confirms fixed output options (e.g., 3.1V, 1.8V, 2.8V, 1.2V) with ±2% accuracy, eliminating resistor networks and saving PCB area while guaranteeing precision without calibration.
How is power sequencing implemented in the MAX20049ATEE/VY+?
The MAX20049ATEE/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). This default order - documented in Figure 1 and the Detailed Description section - ensures safe power-up of image sensor, serializer, and memory rails without external controllers.
What protection features are integrated into the MAX20049ATEE/VY+?
The MAX20049ATEE/VY+ integrates cycle-by-cycle current limiting on both bucks, thermal shutdown with automatic recovery at 175°C, overvoltage protection that disables the high-side MOSFET, and comprehensive rail monitoring with AND-combined PGOOD. These protections are explicitly listed in the Benefits and Features section and verified in the Electrical Characteristics table - ensuring robust operation in automotive environments.
Is the MAX20049ATEE/VY+ qualified for automotive applications?
Yes, the MAX20049ATEE/VY+ is AEC-Q100 qualified (Grade 0) and rated for operation from –40°C to +125°C ambient temperature. Its package (16-pin side-wettable TQFN), thermal performance (θJC = 4°C/W), and built-in protections (UVLO hysteresis, thermal shutdown, PGOOD monitoring) are all specified for automotive camera module deployment - as stated in the Benefits and Features and Package Information sections.
MAX20049ATEE/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, 3.1V
- 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)
MAX20049ATEE/VY+ FAQ
1.How can I place an order for MAX20049ATEE/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049ATEE/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 MAX20049ATEE/VY+ reliable?
The price and inventory of MAX20049ATEE/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20049ATEE/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20049ATEE/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049ATEE/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049ATEE/VY+?
MAX20049ATEE/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049ATEE/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 MAX20049ATEE/VY+?
For technical support, including MAX20049ATEE/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049ATEE/VY+ requirements.
6.How does Aetrix verify that MAX20049ATEE/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20049ATEE/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 MAX20049ATEE/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20049ATEE/VY+?
All MAX20049ATEE/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049ATEE/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 MAX20049ATEE/VY+ part is unused and in its original packaging.
Return procedure for MAX20049ATEE/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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