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Analog Devices Inc./Maxim Integrated MAX20049ATEG/VY+
- Part No.:
- MAX20049ATEG/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049ATEG/VY+.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:1,350
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Product details
Overview
MAX20049ATEG/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 5V–17V input, delivers factory-set outputs including 3.1V/1.8V buck rails and 2.8V/1.2V LDO rails, 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 MAX20049ATEG/VY+ datasheet, MAX20049ATEG/VY+ pinout, MAX20049ATEG/VY+ application, or MAX20049ATEG/VY+ equivalent, key selection criteria include AEC-Q100 qualification, 500mV SUP1 hysteresis for long coax cable support, spread-spectrum EMI reduction, and voltage monitoring across all four output rails with PGOOD "AND" logic.
Technical Context
The MAX20049ATEG/VY+ integrates two fixed-frequency PWM buck converters (2.2MHz typical, ±3% spread-spectrum option) and two low-noise LDOs in a single 16-pin TQFN package. Buck1 and Buck2 operate 180° out-of-phase with minimum off-time of 80ns and low on-resistance MOSFETs (HS: 300–550mΩ, LS: 250–450mΩ), enabling direct 17V-to-0.9V conversion without preregulation.
LDO3 accepts up to 17V input and delivers 2.7V–3.3V at 150mA with 88dB PSRR at 8kHz; LDO4 accepts 1.2V–3.8V input and delivers 1.0V–2.0V (100mV steps) at 400mA with 35–100mV dropout. All outputs feature independent overvoltage/undervoltage monitoring feeding a shared open-drain PGOOD signal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 17V - supports direct connection to power-over-coax cables with 500mV hysteresis for stable startup under slow-rising input conditions. |
| Buck Switching Frequency | 2.2MHz (typ), ±3% spread-spectrum - enables use of small 3.3µH inductors and all-ceramic output capacitors for compact layout. |
| Buck Output Current | Up to 1.2A per channel - sufficient to power image sensor cores and serializers without external current boosting. |
| LDO3 Output | 2.8V @ 150mA, ±2% accuracy - factory-set to match common CMOS image sensor analog supply requirements. |
| LDO4 Output | 1.2V @ 400mA, ±2.5% accuracy, 35mV dropout - optimized for low-noise digital core supply of serializer ICs. |
| Operating Temperature | -40°C to +125°C - qualified per AEC-Q100 Grade 0, suitable for under-hood and camera housing environments. |
| Protection Features | Cycle-by-cycle current limit, thermal shutdown (175°C trip, 15°C hysteresis), OV/UV monitoring on all rails, short-circuit protection - ensures robust operation in automotive transients. |
Pinout & Package
MAX20049ATEG/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 dissipation (θJA = 43.3°C/W on 4-layer board) and meets RoHS requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 PGND1/PGND2 | Power ground return for buck converters | Must be connected to AGND and PCB ground plane; separates power and analog return paths to reduce noise coupling. |
| 2 LX2 / 15 LX1 | Switching node for Buck2/Buck1 | High-impedance when disabled; requires tight layout with BST capacitor (0.1µF ceramic between LX and BST) for gate drive integrity. |
| 3 SUP2 / 14 SUP1 | High-side switch supply input | Accepts 5V–17V input; each requires 2.2µF X7R ceramic bypass to PGND for stable high-side driver operation. |
| 4 BST2 / 13 BST1 | Bootstrap supply for high-side MOSFET gate driver | Must connect 0.1µF ceramic capacitor between BST and corresponding LX pin; critical for proper high-side conduction. |
| 5 PGOOD | Open-drain power-good status output | Asserts low only when *all* four outputs (OUTS1–OUTS4) are within OV/UV thresholds; requires external 10kΩ pull-up. |
| 6 OUTS2 / 8 OUTS1 | Output voltage sense feedback for Buck2/Buck1 | Connect directly to respective output capacitor; enables accurate regulation without external resistor dividers (factory-trimmed). |
| 7 OUTS4 / 10 OUTS3 | LDO4 and LDO3 output terminals | OUTS4 delivers 1.2V/400mA; OUTS3 delivers 2.8V/150mA; both require dedicated ceramic output capacitors (2.2µF and 4.7µF respectively). |
| 9 LDOIN3 | LDO3 input supply node | Accepts up to 17V; can be powered from SUP1, Buck1 (OUTS1), or Buck2 (OUTS2); not recommended to tie directly to SUP1/SUP2 without ≥22µF output capacitance. |
| 11 AGND | Analog ground reference | Must be tied to PGND1/PGND2 at single point; provides reference for BIAS regulator, comparators, and PGOOD logic. |
| 12 BIAS | Internal 5V linear regulator output | Powers internal circuitry; requires 4.7µF ceramic bypass to AGND; UVLO threshold is 2.7V–2.9V with 400–700mV hysteresis. |
Key Features
| Feature | Design Value |
|---|---|
| 16-pin side-wettable TQFN (3mm × 3mm) | Enables automated optical inspection (AOI) and improves solder joint reliability in automotive reflow profiles. |
| 180° out-of-phase buck operation | Reduces RMS input current ripple by ~30% versus in-phase operation, lowering required input capacitance and EMI filter size. |
| Factory-set output voltages | Eliminates external feedback resistors - saves PCB area, avoids trimming errors, and ensures consistent performance across production lots. |
| 500mV SUP1 hysteresis | Prevents oscillation during slow-rising input from long coax cables (e.g., >5m), enabling reliable startup without external RC networks. |
| Spread-spectrum frequency modulation | ±3% modulation around 2.2MHz reduces peak EMI amplitude by up to 10dB, easing compliance with CISPR 25 Class 5 limits. |
| Independent OV/UV monitoring per rail | Each of the four outputs has dedicated comparator thresholds (e.g., OUTS1 UV falling = 87%, OV rising = 102.5%) feeding a single PGOOD "AND" logic output. |
Applications
| Automotive Surround-View Camera | Rear-View Camera Module |
|---|---|
|
Use Scenario: 4-channel camera system mounted at vehicle corners, transmitting video over coax to central ECU with minimal latency and EMI. IC Role / Device Role / Timing Role: Quad-rail power manager delivering 3.1V (image sensor analog), 1.8V (serializer digital), 2.8V (sensor I/O), and 1.2V (memory interface) from single 12V coax feed. Use Value: Eliminates need for discrete DC/DC + LDO combinations; 2.2MHz switching allows <3mm² total passive area per rail; AEC-Q100 qualification ensures field reliability. |
Use Scenario: Compact rear camera module integrated into license plate housing, subject to wide temperature swings and vibration. IC Role / Device Role / Timing Role: Single-chip power solution providing sequenced startup (Buck1 → LDO3 → Buck2 → LDO4) to prevent back-powering and ensure clean reset timing for image sensor and ISP. Use Value: Built-in soft-start ramp rates (3V/ms for bucks, 100–120µs for LDOs) and thermal shutdown with auto-recovery enable unattended operation in harsh environments. |
| Front-Facing ADAS Camera | Point-of-Load Power for Serializer ICs |
|
Use Scenario: High-resolution forward-facing camera for lane departure warning and automatic emergency braking, requiring ultra-low noise and precise voltage tracking. IC Role / Device Role / Timing Role: Supplies 2.8V LDO3 (for sensor analog domain) with 88dB PSRR at 8kHz and 1.2V LDO4 (for serializer core) with 35mV dropout - minimizing supply-induced jitter in pixel clock paths. Use Value: Dedicated LDOIN3 input allows direct connection to coax supply, improving PSRR vs. cascaded buck-LDO topologies; factory voltage trim ensures ±2% accuracy across -40°C to +125°C. |
Use Scenario: Power delivery to GMSL or FPD-Link III serializer ICs located near camera sensor, where space and thermal constraints prohibit discrete regulators. IC Role / Device Role / Timing Role: Provides tightly regulated 1.2V/400mA (LDO4) and 1.8V/1.2A (Buck2) with fast transient response (<500µs startup) and independent fault reporting via PGOOD. Use Value: Low 80ns minimum off-time enables stable 1.2V output from 12V input without cascading; 180° phasing reduces input capacitor stress and extends lifetime in continuous operation. |
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 |
|---|---|---|---|
| MAX20049CATEG/VY+ | Wider 4V–17V input range; same pinout and feature set; differs only in UVLO threshold (4V vs. 5V) and LDO3 voltage options (2.7V/2.8V/2.9V/3.3V). | Preferred for systems with lower input start-up voltage (e.g., battery cold-crank scenarios below 5V). | Select MAX20049CATEG/VY+ only if 4V UVLO is required; otherwise MAX20049ATEG/VY+ offers tighter input tolerance margin in nominal 12V systems. |
| MAX20049DATEG/VY+ | Widest 3.5V–17V input; higher current limit (1.3–1.9A vs. 0.8–1.2A); adds 0.9V–3.3V buck output range and 1.1V–1.825V LDO4 options. | Suitable for next-gen cameras with lower-core-voltage sensors (e.g., 0.9V AI accelerators) or extended low-VIN operation. | Choose MAX20049DATEG/VY+ only when 0.9V buck output or sub-1.1V LDO4 is required; MAX20049ATEG/VY+ remains optimal for standard 1.2V/1.8V/2.8V/3.1V camera rails. |
Compared with MAX20049CATEG/VY+ and MAX20049DATEG/VY+, the MAX20049ATEG/VY+ provides the best balance of input voltage margin (5V UVLO), proven 1.2A buck capability, and factory-optimized 2.8V/1.2V/3.1V/1.8V rail set - reducing design risk for volume automotive camera programs without over-specifying.
Availability
MAX20049ATEG/VY+ is available at Aetrix Electronics and suitable for automotive surround-view, rear-view, and front-facing ADAS camera modules requiring stable component supply, AEC-Q100 qualification, and compact quad-rail power integration.
Supply support for MAX20049ATEG/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 series belongs to Analog Devices' automotive power management portfolio, engineered specifically to consolidate multi-rail camera power supplies into single ICs - reducing bill-of-materials, PCB area, and validation effort for ADAS vision systems.
FAQ
What is the input voltage range supported by the MAX20049ATEG/VY+?
The MAX20049ATEG/VY+ supports an input voltage range of 5V to 17V on both SUP1 and SUP2 pins. This range is optimized for automotive power-over-coax applications and includes a 500mV hysteresis on the SUP1 UVLO to ensure stable startup under slow-rising input conditions typical of long coaxial cables. The device is not rated for operation below 5V input.
Does the MAX20049ATEG/VY+ require external feedback resistors to set output voltages?
No, the MAX20049ATEG/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-trimmed and permanently set during production. This eliminates resistor placement, trimming, and associated tolerances, reducing PCB area and improving long-term stability.
How does the PGOOD signal behave across the four output rails in the MAX20049ATEG/VY+?
The PGOOD signal in the MAX20049ATEG/VY+ is an open-drain output that reflects the logical AND of all four regulated outputs (OUTS1–OUTS4). It pulls low if *any* rail falls below its undervoltage falling threshold (e.g., 87% for buck rails) or rises above its overvoltage rising threshold (e.g., 102.5% for buck rails). PGOOD returns to high-impedance only when all rails are simultaneously within specification.
Can the MAX20049ATEG/VY+ power both image sensor and serializer ICs in a single camera module?
Yes, the MAX20049ATEG/VY+ is explicitly designed for this purpose. Its quad-rail architecture delivers 3.1V/1.2A (Buck1) for image sensor analog supply, 1.8V/1.2A (Buck2) for serializer digital supply, 2.8V/150mA (LDO3) for sensor I/O, and 1.2V/400mA (LDO4) for serializer core - covering all major voltage domains in modern automotive camera modules without external regulators.
Is spread-spectrum frequency modulation enabled by default on the MAX20049ATEG/VY+?
Spread-spectrum frequency modulation is a factory-programmable option on the MAX20049ATEG/VY+, not enabled by default. When activated, it modulates the 2.2MHz switching frequency by ±3% to reduce peak EMI emissions. Designers must specify the spread-spectrum variant at order time; the feature cannot be toggled in-circuit.
MAX20049ATEG/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, 1.2V, 1.8V, 2.9V
- 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)
MAX20049ATEG/VY+ FAQ
1.How can I place an order for MAX20049ATEG/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049ATEG/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 MAX20049ATEG/VY+ reliable?
The price and inventory of MAX20049ATEG/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20049ATEG/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20049ATEG/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049ATEG/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049ATEG/VY+?
MAX20049ATEG/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049ATEG/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 MAX20049ATEG/VY+?
For technical support, including MAX20049ATEG/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049ATEG/VY+ requirements.
6.How does Aetrix verify that MAX20049ATEG/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20049ATEG/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 MAX20049ATEG/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20049ATEG/VY+?
All MAX20049ATEG/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049ATEG/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 MAX20049ATEG/VY+ part is unused and in its original packaging.
Return procedure for MAX20049ATEG/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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