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Analog Devices Inc./Maxim Integrated MAX20049DATEG/VY+
- Part No.:
- MAX20049DATEG/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049DATEG/VY+.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:1,450
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Product details
Overview
MAX20049DATEG/VY+ 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. It delivers four regulated rails - two buck outputs (e.g., 3.1V/1.8V) and two LDO outputs (e.g., 2.8V/1.2V) - with factory-set voltages, input voltage monitoring, power-good signaling, and AEC-Q100 qualification for -40°C to +125°C operation.
For engineers reviewing the MAX20049DATEG/VY+ datasheet, MAX20049DATEG/VY+ pinout, MAX20049DATEG/VY+ application, or MAX20049DATEG/VY+ equivalent, key selection considerations include its 3.5V–17V input range for Power-over-Coax, 180° out-of-phase buck operation to minimize input ripple, 500mV SUP1 hysteresis for long cable tolerance, spread-spectrum EMI reduction, and quad-rail voltage monitoring with PGOOD "AND" logic.
Technical Context
The MAX20049DATEG/VY+ integrates two fixed-frequency PWM buck converters operating at 2.2MHz (±3% spread-spectrum option), each supporting 0.9V–3.8V output with up to 1.2A load, and two low-noise LDOs: LDO3 (2.7V–3.3V, 150mA, PSRR = 88dB @ 8kHz) and LDO4 (1.0V–2.0V, 400mA, dropout = 35mV @ 400mA). All outputs are monitored for overvoltage/undervoltage events, triggering open-drain PGOOD assertion.
It employs internal BIAS regulation (5V, 20mA), 180° interleaved buck phasing, cycle-by-cycle current limiting, thermal shutdown with 15°C hysteresis, and factory-programmed sequencing (Buck1 → LDO3 → Buck2 → LDO4). The device uses high-side/low-side DMOS switches (RON_HS ≈ 300–550mΩ, RON_LS ≈ 250–450mΩ) and supports all-ceramic capacitor designs via low on-time architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 17V - enables direct connection to long, low-cost coaxial cables in automotive camera systems without external pre-regulation. |
| Switching Frequency | 2.2MHz (±3% spread-spectrum) - allows compact 3.3µH inductors and all-ceramic output filtering, reducing solution size and EMI. |
| Buck Output Current | Up to 1.2A per channel - sufficient to power image sensor cores and serializers without external current boosting. |
| LDO3 Output | 2.7V–3.3V, ±2% accuracy, 150mA - targets CMOS image sensor analog supplies with high PSRR (88dB @ 8kHz) for noise-sensitive pixel arrays. |
| LDO4 Output | 1.0V–2.0V in 100mV steps, ±2.5%, 400mA, 35mV dropout - powers digital logic (e.g., serializer I/O, memory interfaces) with minimal headroom loss. |
| Operating Temperature | -40°C to +125°C ambient - meets automotive under-hood and camera module environmental requirements per AEC-Q100 Grade 1. |
| Protection Features | Cycle-by-cycle current limit, thermal shutdown (175°C trip, 160°C recovery), OV/UV monitoring on all four rails, and open-drain PGOOD with 50µs debounce. |
Pinout & Package
MAX20049DATEG/VY+ is housed in a 16-pin side-wettable TQFN (3mm × 3mm) with exposed pad, optimized for automated optical inspection (AOI) and thermal performance (θJA = 43.3°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND2 / PGND1 | Power ground return for Buck2 / Buck1 | Must be connected to common AGND plane; critical for low-impedance switching loop closure and EMI control. |
| LX1 / LX2 | Switching node for Buck1 / Buck2 | High dv/dt node requiring tight layout; connects to inductor and BST capacitor; high-impedance when disabled. |
| SUP1 / SUP2 | High-side switch supply input | Accepts 3.5V–17V input; requires 2.2µF X7R ceramic bypass to PGND for stable gate drive. |
| BST1 / BST2 | Bootstrap supply for high-side MOSFET driver | Requires 0.1µF ceramic between BSTx and corresponding LXx; enables efficient 100% duty-cycle capability. |
| OUTS1 / OUTS2 | Feedback sense point for Buck1 / Buck2 | Connects to output capacitor; used for precision regulation; separate from power output pins to reject PCB trace IR drop. |
| OUTS3 / OUTS4 | Output of LDO3 / LDO4 | Low-noise rails; require 4.7µF and 2.2µF X7R ceramics respectively; OUTS4 supports 400mA with <100mV dropout. |
| LDOIN3 | LDO3 input supply | Accepts 2.9V–17V; can be powered from SUP1 (coax), OUTS1, or OUTS2 - enabling flexible cascading or isolated biasing. |
| PGOOD | Open-drain power-good status | Asserts low only when ALL four outputs (OUTS1–OUTS4) are within UV/OV thresholds; requires external 10kΩ pull-up. |
| BIAS | Internal 5V linear regulator output | Powers internal circuitry; must be bypassed with 4.7µF X7R ceramic; enables startup after VBIAS > 3.1V UVLO threshold. |
| AGND | Analog ground reference | Must be tied to PGND at single point; serves as reference for feedback, PGOOD comparator, and internal logic. |
Key Features
| Feature | Design Value |
|---|---|
| 180° interleaved buck operation | Reduces input capacitance requirement by ~50% and cuts peak input current ripple vs. in-phase operation. |
| Factory-programmed output voltages | Eliminates external resistor networks; supports 2.8V/2.9V/3.1V/3.3V/3.8V bucks and 2.7V–3.3V LDO3, 1.0V–2.0V LDO4 in 100mV steps. |
| 500mV SUP1 input hysteresis | Prevents oscillation during slow-coax startup or voltage sag; enables reliable operation with >10m coax runs. |
| Side-wettable TQFN package | Enables automated solder-joint inspection (AOI) for automotive-grade manufacturing traceability and reliability assurance. |
| Spread-spectrum frequency modulation | ±3% modulation around 2.2MHz reduces peak EMI amplitude by >10dB, easing CISPR-25 Class 5 compliance. |
| Quad-rail voltage monitoring with AND logic | PGOOD asserts only when all four outputs meet UV/OV thresholds - ensures system-level power integrity before host processor boot. |
Applications
| Camera Module - Rear View | Camera Module - Front ADAS |
|---|---|
Use Scenario: Rear-view camera mounted on vehicle tailgate, powered via 12V battery through long coaxial cable with significant IR drop and noise. IC Role / Device Role / Timing Role: Quad-rail PMIC providing 3.1V (image sensor core), 1.8V (serializer), 2.8V (sensor analog), and 1.2V (memory interface) with synchronized soft-start and rail monitoring. Use Value: 500mV SUP1 hysteresis tolerates >1.5V coax voltage sag; 2.2MHz switching enables <3mm² inductor footprint; PGOOD ensures clean boot sequence. | Use Scenario: Front-facing ADAS camera in bumper, subject to high ambient temperature and EMI from radar/infotainment systems. IC Role / Device Role / Timing Role: Single-chip power solution delivering thermally robust, low-noise rails with AEC-Q100 Grade 1 rating and spread-spectrum EMI suppression. Use Value: -40°C to +125°C operation ensures reliability; 88dB PSRR on LDO3 rejects high-frequency noise from nearby RF sources; side-wettable package supports AOI for zero-defect manufacturing. |
| Camera Module - Surround View | Point-of-Load for Serializer IC |
Use Scenario: Four-corner surround-view system requiring identical, space-constrained power solutions across multiple cameras. IC Role / Device Role / Timing Role: Standardized quad-rail supply with factory-set voltages (3.3V/1.8V/2.8V/1.2V) and identical sequencing across all nodes. Use Value: Eliminates BOM variation and layout redesign per camera; 3mm × 3mm TQFN saves >40% board area vs. discrete buck+LDO solutions. | Use Scenario: Local regulation for GMSL or FPD-Link III serializer IC requiring ultra-low-noise 1.2V/1.8V supplies with fast transient response. IC Role / Device Role / Timing Role: Dual-buck + dual-LDO architecture delivers low-ripple, high-PSRR rails with precise sequencing (Buck1→LDO3→Buck2→LDO4). Use Value: LDO4's 35mV dropout at 400mA minimizes heat generation near serializer; 120µs LDO4 soft-start prevents inrush-induced signal corruption during link training. |
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 |
|---|---|---|---|
| MAX20090ATG/VY+ | Single 2.2MHz 3A buck + dual LDOs; no second buck; higher current per buck but lacks independent 2nd buck rail. | Best for camera modules needing one high-current rail (e.g., 3.3V @ 2.5A) plus two LDOs - not suitable when two independent 1A bucks are required. | Select MAX20090ATG/VY+ only if system consolidates primary imaging rail into one high-current path and eliminates need for second buck. |
| TPS653221AQ1RQMR | Triple buck (2A/1.5A/1.5A) + single LDO; no spread spectrum; different sequencing control; non-side-wettable 24-pin QFN. | Offers higher total current and third buck, but lacks LDO3/LDO4 PSRR specs and coax-optimized hysteresis; requires more PCB area. | Choose TPS653221AQ1RQMR when three independent high-current rails are needed and EMI is managed externally; avoid if coax cable length >5m or AOI is mandatory. |
Compared with MAX20090ATG/VY+ and TPS653221AQ1RQMR, MAX20049DATEG/VY+ uniquely balances dual 1A bucks, dual high-PSRR LDOs, coax-ready hysteresis, spread-spectrum EMI control, and side-wettable packaging - making it optimal for compact, noise-sensitive, multi-rail automotive camera modules where board space and manufacturability are critical.
Availability
MAX20049DATEG/VY+ is available at Aetrix Electronics and suitable for automotive camera modules, surround-view systems, and ADAS front/rear camera applications requiring stable component supply, AEC-Q100 compliance, and long-cable power delivery.
Supply support for MAX20049DATEG/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 MAX20049DATEG/VY+ belongs to Analog Devices' automotive power management portfolio, engineered specifically to consolidate power delivery for next-generation camera modules - emphasizing small size, coax compatibility, EMI robustness, and AEC-Q100 reliability.
FAQ
What input voltage range does the MAX20049DATEG/VY+ support, and why is it suitable for Power-over-Coax?
The MAX20049DATEG/VY+ supports a 3.5V to 17V input range on SUP1/SUP2, with a 500mV hysteresis on the SUP1 UVLO threshold. This wide range and hysteresis allow stable startup and operation despite significant IR drop and noise on long, low-cost coaxial cables commonly used in automotive camera systems - eliminating the need for external pre-regulators or active cable compensation circuits. The MAX20049DATEG/VY+ is explicitly designed for this use case.
How are output voltages configured on the MAX20049DATEG/VY+, and can they be adjusted externally?
Output voltages on the MAX20049DATEG/VY+ are factory-programmed and fixed - including Buck1/Buck2 (e.g., 3.1V, 1.8V), LDO3 (e.g., 2.8V), and LDO4 (e.g., 1.2V). No external resistors or configuration pins are provided; voltage options are selected at order time per Table 1 in the datasheet. This eliminates trimming components, improves accuracy (±2%), reduces PCB area, and ensures consistent performance across production units. The MAX20049DATEG/VY+ does not support post-manufacture voltage adjustment.
What is the purpose of the PGOOD pin on the MAX20049DATEG/VY+, and how does its logic work?
The PGOOD pin on the MAX20049DATEG/VY+ is an open-drain output that signals system readiness only when all four regulated outputs (OUTS1–OUTS4) simultaneously meet their undervoltage and overvoltage thresholds - implementing strict "AND" logic. It pulls low on any fault and goes high-impedance only after all rails stabilize within spec and complete soft-start. A 10kΩ external pull-up is required. This ensures downstream processors or FPGAs do not boot until full power integrity is confirmed - a critical safety feature in automotive camera systems. The MAX20049DATEG/VY+ guarantees this behavior across -40°C to +125°C.
Does the MAX20049DATEG/VY+ include EMI-reduction features, and how are they implemented?
Yes, the MAX20049DATEG/VY+ includes factory-programmable spread-spectrum frequency modulation (±3% around 2.2MHz), which dithers the switching frequency to reduce peak radiated emissions. Combined with optimized pinout (tight switching-node layout), 180° interleaved bucks (halving input ripple), and all-ceramic capacitor support, these features help meet stringent automotive EMI standards like CISPR-25 Class 5 without added shielding or filters. The MAX20049DATEG/VY+ datasheet confirms spread-spectrum is enabled by default in most variants, including MAX20049DATEG/VY+.
Is the MAX20049DATEG/VY+ qualified for automotive applications, and what certifications does it hold?
Yes, the MAX20049DATEG/VY+ is AEC-Q100 qualified (Grade 1) for automotive applications, with guaranteed operation from -40°C to +125°C ambient temperature. It also features built-in protection including cycle-by-cycle current limiting, thermal shutdown with automatic recovery (175°C trip, 160°C recovery), overvoltage/undervoltage monitoring on all four outputs, and short-circuit protection. These capabilities - along with its side-wettable TQFN package for AOI traceability - make the MAX20049DATEG/VY+ suitable for safety-critical camera modules in production vehicles.
MAX20049DATEG/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:
- 1.225V, 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)
MAX20049DATEG/VY+ FAQ
1.How can I place an order for MAX20049DATEG/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049DATEG/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 MAX20049DATEG/VY+ reliable?
The price and inventory of MAX20049DATEG/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20049DATEG/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20049DATEG/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049DATEG/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049DATEG/VY+?
MAX20049DATEG/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049DATEG/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 MAX20049DATEG/VY+?
For technical support, including MAX20049DATEG/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049DATEG/VY+ requirements.
6.How does Aetrix verify that MAX20049DATEG/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20049DATEG/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 MAX20049DATEG/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20049DATEG/VY+?
All MAX20049DATEG/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049DATEG/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 MAX20049DATEG/VY+ part is unused and in its original packaging.
Return procedure for MAX20049DATEG/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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