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Analog Devices Inc./Maxim Integrated MAX20049ATEH/VY+T
- Part No.:
- MAX20049ATEH/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049ATEH/VY+T.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
The MAX20049ATEH/VY+T from Analog Devices is a dual 2.2MHz, 1A synchronous step-down converter with integrated dual LDOs (150mA LDO3 and 400mA LDO4), designed specifically for automotive camera modules requiring quad-rail power delivery from a single chip. It operates from 5V to 17V input, delivers factory-set outputs including 3.1V/1.8V/2.8V/1.2V, and integrates voltage monitoring, 180° out-of-phase buck operation, and AEC-Q100 qualification for rear/front/surround-view systems.
For engineers reviewing the MAX20049ATEH/VY+T datasheet, MAX20049ATEH/VY+T pinout, MAX20049ATEH/VY+T application, or MAX20049ATEH/VY+T equivalent, this page provides verified technical context, confirmed pin functions, automotive-grade thermal and protection behavior, and real-world sequencing and EMI mitigation details essential for camera power design validation.
Technical Context
The MAX20049ATEH/VY+T implements two fixed-frequency PWM buck converters operating at 2.2MHz (±3% spread-spectrum option), each with 180° phase offset to minimize input ripple. Each buck supports 0.9V–3.8V output with ±2% accuracy over -40°C to +125°C, and features cycle-by-cycle current limiting, 80ns minimum off-time, and low RDS(ON) (300mΩ HS / 250mΩ LS) for high efficiency.
It integrates two dedicated LDOs: LDO3 (2.7V–3.3V, 150mA, 350mV dropout) powered from SUP1 or cascaded from Buck1/Buck2, and LDO4 (1.0V–2.0V in 100mV steps, 400mA, 35–100mV dropout) powered from Buck2. All four rails are monitored via PGOOD with 95% UV and 102.5–108% OV thresholds and 50µs debounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 17V - supports direct connection to power-over-coax cables without external preregulation |
| Switching Frequency | 2.2MHz (typ), ±3% spread-spectrum - enables all-ceramic, compact 3.3µH inductor design and reduces EMI peak emissions |
| Buck Output Current | Up to 1.2A per channel - sufficient for image sensor core and serializer loads in 5MP+ automotive cameras |
| LDO3 Output | 2.8V (factory-set), 150mA, ±2% accuracy - supplies low-noise bias to CMOS image sensors with 88dB PSRR at 8kHz |
| LDO4 Output | 1.2V (factory-set), 400mA, ±2.5% accuracy - powers serializer/memory I/O with 35mV dropout at full load |
| Operating Temperature | -40°C to +125°C - qualified per AEC-Q100 Grade 0, enabling under-hood and camera housing deployment |
| Protection Features | Cycle-by-cycle current limit, thermal shutdown (175°C, 15°C hysteresis), OV/UV monitoring on all 4 rails, 500mV SUP1 hysteresis for slow-start cable stability |
Pinout & Package
Package: 16-pin side-wettable TQFN (3mm × 3mm) with exposed pad, RoHS-compliant, θJA = 43.3°C/W (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 PGND1/PGND2 | Power ground return for Buck1/Buck2 | Must be connected to AGND and PCB ground plane; critical for low-impedance switching current return paths |
| 2 LX2 / 15 LX1 | Switching node for Buck2/Buck1 | High dv/dt node; requires tight layout with minimal loop area to reduce EMI and ringing |
| 3 SUP2 / 14 SUP1 | High-side switch supply input | Accepts 5V–17V input; each requires 2.2µF X7R ceramic bypass to PGND for stable gate drive |
| 4 BST2 / 13 BST1 | Bootstrap supply for high-side MOSFET driver | Requires 0.1µF ceramic capacitor between BSTx and corresponding LXx for proper high-side turn-on |
| 5 PGOOD | Open-drain power-good status output | Pulls low if any rail falls below 92–96% UV or rises above 106–115% OV; requires 10kΩ pull-up to BIAS or external rail |
| 6 OUTS2 / 8 OUTS1 | Output voltage sense feedback for Buck2/Buck1 | Connects directly to respective output capacitor; enables accurate regulation independent of PCB trace IR drop |
| 7 OUTS4 / 10 OUTS3 | LDO4/LDO3 output sense terminals | Enable precise remote sensing of LDO outputs; OUTS3 connects to 4.7µF ceramic cap for low-noise imaging rail |
| 9 LDOIN3 | LDO3 input supply terminal | Accepts 2.9V–17V input; must be decoupled with 1µF ceramic; not recommended to tie directly to SUP1/SUP2 without ≥22µF output capacitance |
| 11 AGND | Analog ground reference | Must be tied to PGND at single point; serves as reference for BIAS, PGOOD, and internal comparators |
| 12 BIAS | Internal 5V linear regulator output | Powers internal circuitry; requires 4.7µF ceramic bypass; used as pull-up source for PGOOD and optional external bias |
Key Features
| Feature | Design Value |
|---|---|
| 180° out-of-phase buck operation | Reduces RMS input current ripple by ~30%, allowing smaller input capacitors and lower EMI filter component stress |
| Factory-programmed output voltages | Eliminates external resistor networks; ensures consistent 3.1V/1.8V/2.8V/1.2V rail generation across production batches |
| 500mV SUP1 hysteresis | Prevents oscillation during slow-start conditions on long coax cables, enabling reliable startup with low-cost cabling |
| Integrated spread-spectrum modulation | ±3% frequency dithering lowers peak EMI by >10dB, easing CISPR-25 Class 5 compliance for automotive camera ECU designs |
| Low dropout LDO architecture | LDO4 achieves 35mV dropout at 400mA, enabling efficient 1.2V generation from 1.8V Buck2 output without cascaded conversion loss |
Applications
| Rear-View Camera Power System | Front ADAS Camera Module |
|---|---|
|
Use Scenario: Compact 12V-to-quad-rail power solution for 8MP rear-view camera with HDR sensor, serializer, and memory interface. IC Role / Device Role / Timing Role: Single-chip quad-rail PMIC delivering 3.1V (sensor analog), 1.8V (serializer), 2.8V (LDO3 for sensor I/O), and 1.2V (memory core) with synchronized soft-start. Use Value: Reduces BOM count by 4 discrete regulators; 3mm × 3mm TQFN footprint saves >60% PCB area vs. discrete buck+LDO solutions. |
Use Scenario: AEC-Q100-compliant power management for front-facing stereo camera in L2+ ADAS domain controller. IC Role / Device Role / Timing Role: Dual-buck + dual-LDO IC providing fault-monitored, sequenced rails for dual image sensors and MIPI CSI-2 transceivers. Use Value: Integrated PGOOD "AND" logic ensures system reset only when all 4 rails are valid; thermal shutdown with auto-recovery maintains uptime during transient overloads. |
| Surround-View Camera ECU | Automotive Camera Reference Design |
|
Use Scenario: Centralized power for 4-channel surround-view system with shared coax input and individual sensor rail requirements. IC Role / Device Role / Timing Role: Quad-output PMIC supporting flexible LDO3 sourcing (from SUP1 or Buck1/Buck2) to match varying sensor input voltage needs across camera positions. Use Value: 500mV SUP1 hysteresis enables stable operation over 10m+ coax runs; 2.2MHz switching allows use of 3.3µH inductors, reducing height and cost. |
Use Scenario: Evaluation platform for rapid prototyping of automotive camera power architectures using pre-validated components. IC Role / Device Role / Timing Role: Reference PMIC demonstrating default sequencing (Buck1 → LDO3 → Buck2 → LDO4) and spread-spectrum EMI reduction techniques. Use Value: Factory-set 3.1V/1.8V/2.8V/1.2V outputs eliminate configuration errors; side-wettable QFN enables automated optical inspection (AOI) in high-volume manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-rail automotive camera power applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20049CATEH/VY+T | Wider 4V–17V input range; supports 0.9V–1.9V buck outputs; LDO3 includes 2.7V option | Preferred for systems with lower input voltage margin or requiring sub-1.0V core rails | Select when input may dip below 5V or when 0.9V–1.0V LDO4 output is required |
| MAX20049DATEH/VY+T | Widest 3.5V–17V input; supports 0.9V–3.3V buck outputs; same LDO3/LDO4 voltage options as C variant | Suitable for ultra-low-voltage start-stop or battery-supplied auxiliary camera systems | Choose for maximum input flexibility in 12V/24V hybrid architectures with deep discharge tolerance |
Compared with MAX20049ATEH/VY+T, the C and D variants extend input range downward (to 4V and 3.5V respectively) and broaden buck output voltage coverage-enabling robust operation in cold-crank or dual-battery automotive environments where nominal 12V drops below 5V, while retaining identical pinout, thermal performance, and AEC-Q100 qualification.
Availability
MAX20049ATEH/VY+T is available at Aetrix Electronics and suitable for automotive camera modules, ADAS domain controllers, and surround-view ECUs requiring stable component supply, AEC-Q100 compliance, and compact quad-rail power integration.
Supply support for MAX20049ATEH/VY+T 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 MAX20049ATEH/VY+T belongs to Analog Devices' automotive-qualified power management portfolio, engineered specifically to consolidate multi-rail camera power delivery into a single AEC-Q100 Grade 0 device with integrated monitoring and sequencing.
FAQ
What is the input voltage range supported by the MAX20049ATEH/VY+T?
The MAX20049ATEH/VY+T supports an input voltage range of 5V to 17V on both SUP1 and SUP2 pins. This range is optimized for direct connection to automotive power-over-coax infrastructure and accommodates typical 12V battery variations including load dump transients. The 500mV hysteresis on SUP1 ensures stable startup even with slow-rising voltages on long cables.
How are the output voltages configured on the MAX20049ATEH/VY+T?
The MAX20049ATEH/VY+T has factory-programmed output voltages: Buck1 is set to 3.1V, Buck2 to 1.8V, LDO3 to 2.8V, and LDO4 to 1.2V. These values are laser-trimmed during production and cannot be adjusted externally-eliminating the need for feedback resistors and ensuring consistent rail accuracy across temperature and lifetime.
Does the MAX20049ATEH/VY+T include built-in power-good monitoring?
Yes, the MAX20049ATEH/VY+T integrates a comprehensive PGOOD function that monitors all four output rails (OUTS1, OUTS2, OUTS3, OUTS4) simultaneously. It pulls low if any rail falls below its undervoltage threshold (92–96% of nominal) or exceeds its overvoltage threshold (106–115%), with 50µs debounce to reject noise-induced false triggers.
What thermal protection does the MAX20049ATEH/VY+T provide?
The MAX20049ATEH/VY+T features thermal overload protection that disables both buck converters when junction temperature exceeds +175°C (typical), then automatically recovers once temperature falls by 15°C. Its 43.3°C/W θJA on a 4-layer board and exposed-pad TQFN package enable reliable operation up to +125°C ambient in sealed camera housings.
Can the MAX20049ATEH/VY+T be used with power-over-coax cables?
Yes-the MAX20049ATEH/VY+T is explicitly designed for power-over-coax applications. Its 5V–17V input range, 500mV SUP1 hysteresis, and ability to accept up to 17V on LDOIN3 allow direct connection to coax-fed camera systems without intermediate regulation, reducing component count and improving system-level efficiency.
MAX20049ATEH/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, Digital Still Cameras
- Voltage - Input:
- -
- Number of Outputs:
- 4
- Voltage - Output:
- 1.2V, 1.8V, 2.8V, 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)
MAX20049ATEH/VY+T FAQ
1.How can I place an order for MAX20049ATEH/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049ATEH/VY+T 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 MAX20049ATEH/VY+T reliable?
The price and inventory of MAX20049ATEH/VY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20049ATEH/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20049ATEH/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049ATEH/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049ATEH/VY+T?
MAX20049ATEH/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049ATEH/VY+T 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 MAX20049ATEH/VY+T?
For technical support, including MAX20049ATEH/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049ATEH/VY+T requirements.
6.How does Aetrix verify that MAX20049ATEH/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20049ATEH/VY+T 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 MAX20049ATEH/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20049ATEH/VY+T?
All MAX20049ATEH/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049ATEH/VY+T, 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 MAX20049ATEH/VY+T part is unused and in its original packaging.
Return procedure for MAX20049ATEH/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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