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Analog Devices Inc./Maxim Integrated MAX20049ATEA/VY+
- Part No.:
- MAX20049ATEA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049ATEA/VY+.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:1,425
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Product details
Overview
The MAX20049ATEA/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 to 17V input, delivers factory-set outputs including 3.1V/1.8V/2.8V/1.2V, and features 180° out-of-phase buck operation, 500mV SUP1 hysteresis, and AEC-Q100 qualification for rear/front/surround-view camera systems.
For engineers reviewing the MAX20049ATEA/VY+ datasheet, MAX20049ATEA/VY+ pinout, MAX20049ATEA/VY+ application, or MAX20049ATEA/VY+ equivalent, key selection considerations include its 3mm × 3mm side-wettable TQFN package, fixed-output voltage options without external resistors, power-good monitoring across all four rails, and support for power-over-coax cable interfaces with slow-start robustness.
Technical Context
The MAX20049ATEA/VY+ integrates two independent PWM buck converters operating at 2.2MHz (±3% spread-spectrum option) with 180° phase shift to minimize input ripple, plus two dedicated LDOs: LDO3 (PMOS, 2.7–3.3V, 150mA) powered from SUP1 or buck outputs, and LDO4 (NMOS, 1.0–2.0V, 400mA) sequenced from Buck2. All outputs feature overvoltage/undervoltage monitoring with programmable thresholds and 50µs debounce.
Its BIAS regulator (5V, 20mA) powers internal circuitry with UVLO at 2.7V–2.9V and 400–700mV hysteresis; SUP1 UVLO rises at 5V with 500mV hysteresis to tolerate coax cable voltage sag. Thermal shutdown activates at 175°C with 15°C hysteresis, and cycle-by-cycle current limiting protects both bucks (ILIM = 0.8–1.2A).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 17V - supports direct connection to automotive power-over-coax cables without preregulation. |
| Switching Frequency | 2.2MHz (typ), ±3% spread-spectrum - enables all-ceramic capacitor design and compact 3.3µH inductors. |
| Buck Output Current | Up to 1.2A per channel - sufficient for image sensor core and serializer rails in 5MP+ camera modules. |
| LDO3 Output | 2.7V–3.3V, 150mA - factory-set to match common CMOS image sensor analog supply requirements. |
| LDO4 Output | 1.0V–2.0V in 100mV steps, 400mA - targets low-noise digital core/memory rails of SerDes ICs. |
| PGOOD Monitoring | AND-logic monitoring of all four outputs with 95% UV rising threshold and 102.5–108% OV rising threshold - 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
MAX20049ATEA/VY+ uses a 16-pin side-wettable TQFN package (3mm × 3mm, exposed pad), optimized for automated optical inspection (AOI) and thermal performance in space-constrained camera modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 PGND2 / PGND1 | Power ground return for Buck2 / Buck1 | Must be connected to common PCB ground plane with low-inductance path; shares AGND node. |
| 2 LX2 / 15 LX1 | Switching node for Buck2 / Buck1 | High dv/dt node requiring tight layout; connects to 3.3µH inductor and BST capacitor. |
| 3 SUP2 / 14 SUP1 | High-side switch supply input for Buck2 / Buck1 | Accepts 5–17V input; requires 2.2µF X7R ceramic bypass to PGND for stability. |
| 4 BST2 / 13 BST1 | Bootstrap supply for Buck2 / Buck1 high-side driver | Requires 0.1µF ceramic capacitor between BSTx and corresponding LXx for gate drive. |
| 5 PGOOD | Open-drain power-good status output | Asserts low when any output violates UV/OV thresholds; requires external 10kΩ pull-up to BIAS or 3.3V rail. |
| 6 OUTS2 / 8 OUTS1 | Voltage sense feedback for Buck2 / Buck1 | Connects directly to respective output capacitor; enables accurate regulation without external dividers. |
| 7 OUTS4 | 400mA LDO4 output | Delivers factory-set low-noise 1.2V (or other 1.0–2.0V option); requires 2.2µF ceramic to AGND. |
| 9 LDOIN3 | LDO3 input supply | Accepts 2.9–17V; can be fed from SUP1 (for PSRR), OUTS1, or OUTS2 - enables flexible sequencing. |
| 10 OUTS3 | 150mA LDO3 output | Provides factory-set 2.8V (or 2.7/2.9/3.0/3.3V) for image sensor analog supply; requires 4.7µF ceramic. |
| 11 AGND | Analog ground reference | Must be tied to PGND at single point; serves as reference for BIAS, PGOOD, and LDO feedback. |
| 12 BIAS | Internal 5V linear regulator output | Powers internal logic; requires 4.7µF ceramic bypass; used as PGOOD pull-up or LDO enable source. |
| EP | Exposed thermal pad | Must be soldered to solid ground plane for thermal dissipation (θJC = 4°C/W); not electrically active. |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable TQFN package | 3mm × 3mm footprint with gull-wing leads enables AOI-compatible assembly and reduces PCB area by >30% vs. QFN alternatives. |
| 180° out-of-phase buck operation | Halves input RMS current ripple versus in-phase operation, relaxing input capacitor sizing and EMI filter requirements. |
| 500mV SUP1 hysteresis | Prevents oscillation during slow power-up on long coax cables, eliminating need for external RC delay networks. |
| Factory-programmed output voltages | Eliminates external feedback resistors, improves accuracy (±2%), and removes layout sensitivity for camera BOM simplification. |
| Integrated BIAS regulator | 5V/20mA on-chip LDO powers internal circuitry and provides clean bias for PGOOD pull-up and sequencing control. |
| Spread-spectrum modulation | ±3% frequency dithering reduces peak EMI by up to 10dB, easing compliance with CISPR 25 Class 5 automotive emissions limits. |
Applications
| Rear-View Camera Power System | Front ADAS Camera Module |
|---|---|
|
Use Scenario: Compact 12V-powered rear-view camera with 5MP CMOS sensor, GMSL2 serializer, and DDR memory interface. IC Role / Device Role / Timing Role: Single-chip quad-rail supply generating 3.1V (sensor analog), 1.8V (serializer core), 2.8V (sensor IO), and 1.2V (memory I/O) with synchronized soft-start. Use Value: Reduces bill-of-materials by consolidating four discrete regulators into one AEC-Q100-qualified IC, cutting solution size by 45% and enabling <10mm² PCB area. |
Use Scenario: Front-facing ADAS camera with HDR sensor, ISP processor, and radar fusion interface requiring strict power sequencing and low noise. IC Role / Device Role / Timing Role: Provides sequenced 3.3V→2.8V→1.8V→1.2V rails with PGOOD AND-logic validation and 88dB PSRR on LDO3 for sensor analog supply. Use Value: Ensures deterministic boot order without external controllers; 500mV SUP1 hysteresis prevents false resets on engine cranking transients. |
| Surround-View Camera ECU | Camera Mirror Replacement System |
|
Use Scenario: Multi-camera ECU powering four identical 3MP cameras via individual coax links, each requiring isolated, low-EMI power. IC Role / Device Role / Timing Role: Delivers identical 2.9V/1.8V/2.8V/1.2V rails per camera with 2.2MHz switching and spread-spectrum to suppress narrowband EMI coupling between channels. Use Value: Enables identical power design across all camera nodes, reducing validation effort and supporting ASIL-B functional safety architecture via PGOOD monitoring. |
Use Scenario: Digital mirror replacement using four wide-dynamic-range cameras feeding a central video processor with strict thermal constraints. IC Role / Device Role / Timing Role: Supplies 3.1V (sensor), 1.8V (SerDes), 2.8V (IO), and 1.2V (DDR) with 4°C/W θJC and exposed pad thermal path for conduction cooling in sealed housing. Use Value: Maintains junction temperature <125°C at full load in 85°C ambient, eliminating need for forced airflow and enabling fanless, IP67-rated enclosure design. |
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 2.2MHz 3A buck + dual LDOs; no second buck; wider 3.5–36V input range. | Targeted at single-sensor modules with higher current demand (e.g., 8MP sensors); lacks dual-buck flexibility for independent rail optimization. | Select when only one high-current rail is needed and input voltage may exceed 17V (e.g., 24V truck systems). |
| TPS653221AQPHRQ1 | Triple buck (2A/1.5A/1.5A) + single LDO; 3.3–36V input; no spread-spectrum; different sequencing control. | Designed for general automotive domain controllers; lacks LDO3/LDO4 PSRR optimization for image sensors and no coax hysteresis. | Select for non-camera applications requiring three high-current rails; avoid for camera modules needing 88dB PSRR and 500mV hysteresis. |
Compared with MAX20090ATP/VY+ and TPS653221AQPHRQ1, the MAX20049ATEA/VY+ uniquely balances dual-buck flexibility, LDO-specific PSRR, coax-optimized hysteresis, and minimal 3mm × 3mm footprint-making it the only solution that meets all four critical requirements for next-generation automotive camera power design.
Availability
MAX20049ATEA/VY+ is available at Aetrix Electronics and suitable for automotive camera module production, surround-view ECU development, and ADAS front-camera integration requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for MAX20049ATEA/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 with precision power, sensing, and connectivity solutions.
The MAX20049ATEA/VY+ belongs to Analog Devices' automotive power management portfolio, engineered specifically to consolidate multi-rail camera power delivery while meeting stringent EMI, thermal, and functional safety requirements of ISO 26262-compliant vision systems.
FAQ
What input voltage range does the MAX20049ATEA/VY+ support, and how does it handle slow-start conditions on coax cables?
The MAX20049ATEA/VY+ supports a 5V to 17V input range on SUP1/SUP2. Its 500mV hysteresis on the SUP1 UVLO threshold prevents false toggling during slow voltage ramps typical of long, low-cost coaxial cables. This eliminates the need for external RC timing circuits and ensures reliable startup even with >10m cable runs under cold-cranking conditions.
How are output voltages configured on the MAX20049ATEA/VY+, and can they be changed after manufacturing?
Output voltages on the MAX20049ATEA/VY+ are factory-programmed and permanently set - Buck1/Buck2 offer fixed options like 3.1V/1.8V, LDO3 offers 2.7V–3.3V, and LDO4 offers 1.0V–2.0V in 100mV steps. No external resistors or configuration pins exist; voltage selection must be specified at order time using the correct variant suffix (e.g., /VY+ denotes specific factory-set outputs).
What is the purpose of the BIAS pin on the MAX20049ATEA/VY+, and how should it be decoupled?
The BIAS pin on the MAX20049ATEA/VY+ delivers a regulated 5V output (20mA max) that powers internal circuitry and serves as a clean bias source for external components. It must be decoupled with a 4.7µF X7R ceramic capacitor to AGND, placed within 2mm of the pin. BIAS is also commonly used as the pull-up source for the open-drain PGOOD signal.
Does the MAX20049ATEA/VY+ provide power-good monitoring for all four outputs, and how is the signal asserted?
Yes, the MAX20049ATEA/VY+ monitors all four outputs (OUTS1–OUTS4) with AND-logic: PGOOD pulls low if *any* output falls below its undervoltage falling threshold (e.g., 87–92% for bucks) or rises above its overvoltage rising threshold (e.g., 102.5–108%). PGOOD returns to high-impedance only when all outputs simultaneously meet regulation criteria, ensuring system-level power integrity.
How does the MAX20049ATEA/VY+ manage thermal performance in sealed camera housings?
The MAX20049ATEA/VY+ uses a 3mm × 3mm side-wettable TQFN with an exposed thermal pad (EP) soldered to the PCB ground plane, achieving θJC = 4°C/W. In a typical 4-layer board with 2-in² copper pour under EP, it sustains full 1.2A/400mA loads at +85°C ambient without derating - critical for fanless, IP67-rated automotive camera enclosures where airflow is prohibited.
MAX20049ATEA/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, 3.3V, 3.8V
- 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)
MAX20049ATEA/VY+ FAQ
1.How can I place an order for MAX20049ATEA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049ATEA/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 MAX20049ATEA/VY+ reliable?
The price and inventory of MAX20049ATEA/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20049ATEA/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20049ATEA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049ATEA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049ATEA/VY+?
MAX20049ATEA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049ATEA/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 MAX20049ATEA/VY+?
For technical support, including MAX20049ATEA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049ATEA/VY+ requirements.
6.How does Aetrix verify that MAX20049ATEA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20049ATEA/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 MAX20049ATEA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20049ATEA/VY+?
All MAX20049ATEA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049ATEA/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 MAX20049ATEA/VY+ part is unused and in its original packaging.
Return procedure for MAX20049ATEA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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