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Analog Devices Inc./Maxim Integrated MAX20049ATED/VY+T
- Part No.:
- MAX20049ATED/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049ATED/VY+T.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:1,537
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Product details
Overview
The MAX20049ATED/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 as a single-chip quad-rail power supply for automotive camera modules. It operates from 3.5V to 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 MAX20049ATED/VY+T datasheet, MAX20049ATED/VY+T pinout, MAX20049ATED/VY+T application, or MAX20049ATED/VY+T equivalent, key selection considerations include AEC-Q100 qualification, 500mV SUP1 hysteresis for long coax cable support, 2.2MHz fixed-frequency PWM operation enabling all-ceramic designs, and factory-programmed voltage options eliminating external feedback resistors.
Technical Context
The MAX20049ATED/VY+T integrates two independent buck converters operating at 2.2MHz (±3% spread-spectrum option) with 180° phase shift, each supporting 0.9V–3.8V output and up to 1.2A load. Its dedicated high-voltage LDOIN3 input (2.9V–17V) enables direct connection to power-over-coax cables or cascading from buck outputs, improving PSRR over conventional LDOs.
Voltage monitoring is applied across all four regulated outputs (OUTS1–OUTS4); PGOOD asserts open-drain low on any undervoltage (<95% nominal) or overvoltage (>108% nominal). Protection includes cycle-by-cycle current limiting, thermal shutdown at +175°C with 15°C hysteresis, and overvoltage shutdown with automatic recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 17V - supports direct connection to automotive power-over-coax infrastructure without preregulation. |
| Switching Frequency | 2.2MHz (typ), ±3% spread-spectrum - enables compact 3.3µH inductors and all-ceramic output filtering. |
| Buck Output Current | Up to 1.2A per channel - sufficient to power image sensor cores and serializers without external boost stages. |
| LDO3 Output | 2.8V @ 150mA (factory-set) - targets low-noise analog supply for CMOS image sensors with 88dB PSRR at 8kHz. |
| LDO4 Output | 1.2V @ 400mA (factory-set) - supplies digital logic rails (e.g., serializer I/O, memory interface) with 35mV dropout at full load. |
| Operating Temperature | -40°C to +125°C - qualified per AEC-Q100 Grade 0 for under-hood and camera module mounting locations. |
| Package Thermal Resistance | θJA = 43.3°C/W (4-layer board) - enables high-power density operation in space-constrained camera housings. |
Pinout & Package
MAX20049ATED/VY+T is housed in a 16-pin side-wettable TQFN (3mm × 3mm) with exposed pad, optimized for automated optical inspection (AOI) and thermal performance in automotive PCB assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 11 | PGND2 / PGND1 / AGND | Power and analog ground nodes - must be connected together at a single-point star ground beneath the exposed pad for noise control and thermal transfer. |
| 2, 15 | LX2 / LX1 | High-side switch node for Buck2/Buck1 - requires tight layout with minimal loop area to suppress EMI; high-impedance when disabled. |
| 3, 14 | SUP2 / SUP1 | High-side MOSFET supply inputs - each requires ≥2.2µF X7R ceramic capacitor to ground for stable gate drive. |
| 4, 13 | BST2 / BST1 | Bootstrap supply for high-side drivers - requires 0.1µF ceramic capacitor between BSTx and corresponding LXx. |
| 5 | PGOOD | Open-drain power-good monitor - pulls low if any output falls below 95% or exceeds 108% of nominal; requires external 10kΩ pull-up. |
| 6, 8 | OUTS2 / OUTS1 | Output voltage sense points for Buck2/Buck1 - connect directly to respective output capacitors to reject PCB trace resistance errors. |
| 7, 10 | OUTS4 / OUTS3 | Regulated LDO outputs - OUTS4 (1.2V/400mA) and OUTS3 (2.8V/150mA) require 2.2µF and 4.7µF ceramic bypass caps respectively. |
| 9 | LDOIN3 | LDO3 input - accepts 2.9V–17V; can be powered from coax cable, Buck1, or Buck2; not recommended to tie directly to SUP1/SUP2 without ≥22µF output capacitance. |
| 12 | BIAS | Internal 5V linear regulator output - powers internal circuitry; requires 4.7µF ceramic capacitor to ground for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable TQFN package | Enables automated optical inspection (AOI) of solder joints in automotive production, critical for zero-defect camera module assembly. |
| 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. |
| 500mV SUP1 hysteresis | Prevents false toggling during slow-start conditions on long coax cables, ensuring reliable power-up in vehicle-level harness environments. |
| Factory-programmed output voltages | Eliminates external resistor networks and layout sensitivity, reducing BOM count and PCB area while guaranteeing accuracy within ±2%. |
| Integrated BIAS regulator | Provides stable 5V internal supply independent of input rail fluctuations, ensuring consistent soft-start timing and sequencing reliability. |
Applications
| Surround-View Camera System | Rear-View Camera Module |
|---|---|
|
Use Scenario: Four-camera system mounted at vehicle corners feeding video to central ADAS ECU via coax or FPD-Link. IC Role / Device Role / Timing Role: Quad-rail power manager delivering 3.1V (image sensor analog), 1.8V (serializer core), 2.8V (sensor I/O), and 1.2V (memory interface) from single 12V coax feed. Use Value: Single-chip solution reduces component count by >40% vs discrete buck+LDO combinations and eliminates need for external sequencing ICs. |
Use Scenario: Compact backup camera integrated into license plate housing with limited PCB real estate and thermal mass. IC Role / Device Role / Timing Role: Primary power IC providing tightly regulated, low-noise rails with built-in UV/OV monitoring and PGOOD assertion for host MCU boot validation. Use Value: 3mm × 3mm TQFN package and all-ceramic design enable <80mm² total solution size, meeting stringent mechanical envelope requirements. |
| Front-Facing ADAS Camera | Driver Monitoring System (DMS) |
|
Use Scenario: High-resolution forward-facing camera for lane departure warning and automatic emergency braking. IC Role / Device Role / Timing Role: Power source for global-shutter CMOS sensor and high-speed MIPI CSI-2 serializer, requiring ultra-low noise on analog rail and precise sequencing. Use Value: LDO3's 88dB PSRR at 8kHz suppresses switching noise from buck converters, preserving sensor SNR and dynamic range. |
Use Scenario: In-cabin infrared camera system monitoring driver attention, operating in high-temperature cabin environments. IC Role / Device Role / Timing Role: AEC-Q100 Grade 0 power IC delivering 2.8V/150mA and 1.2V/400mA with thermal shutdown at +175°C and automatic recovery. Use Value: Junction temperature derating and robust thermal protection ensure continuous operation up to +105°C ambient without forced cooling. |
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; higher current per rail but fewer output rails. | Best suited for single-sensor modules requiring higher current on one rail (e.g., 3.3V @ 2.5A) rather than four independent rails. | Select MAX20090ATP/VY+ when only three regulated rails are needed and higher peak current on primary buck is required. |
| TPS653221AQPHPRQ1 | Triple buck (2A/1.5A/1.5A) + single LDO; no spread spectrum; different sequencing architecture and pinout. | Targets broader automotive body electronics; lacks coax-optimized hysteresis and side-wettable package for AOI. | Choose TPS653221AQPHPRQ1 for non-camera applications where triple-buck topology and TI ecosystem integration are prioritized. |
Compared with MAX20049ATED/VY+T, MAX20090ATP/VY+ consolidates rails at the cost of flexibility, while TPS653221AQPHPRQ1 offers higher buck current but sacrifices coax compatibility and AOI-friendly packaging - making MAX20049ATED/VY+T optimal for multi-sensor camera modules demanding compactness, noise isolation, and production traceability.
Availability
MAX20049ATED/VY+T is available at Aetrix Electronics and suitable for automotive camera modules, ADAS domain controllers, and driver-monitoring systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX20049ATED/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 MAX20049 is part of Analog Devices' automotive power management portfolio, engineered specifically to consolidate power delivery for multi-rail camera modules while meeting AEC-Q100 reliability and EMI requirements in space-constrained enclosures.
FAQ
What is the input voltage range supported by the MAX20049ATED/VY+T?
The MAX20049ATED/VY+T supports an input voltage range of 3.5V to 17V, enabling direct connection to automotive power-over-coax cables and compatibility with 12V battery systems including cold-crank transients. This wide range eliminates the need for upstream pre-regulators in most camera module designs.
How does the MAX20049ATED/VY+T handle power sequencing for its four output rails?
The MAX20049ATED/VY+T implements factory-programmed default 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). Sequencing order is fixed per device variant and cannot be altered externally.
Is the MAX20049ATED/VY+T qualified for automotive use?
Yes, the MAX20049ATED/VY+T is AEC-Q100 qualified for Grade 0 (-40°C to +125°C junction temperature) and designed for automotive camera applications. It includes thermal shutdown at +175°C with 15°C hysteresis, cycle-by-cycle current limiting, and overvoltage protection - all validated per automotive reliability standards.
What package type does the MAX20049ATED/VY+T use, and why is it significant?
The MAX20049ATED/VY+T uses a 16-pin side-wettable TQFN (3mm × 3mm) package with exposed pad. This package enables automated optical inspection (AOI) of solder joints - a critical requirement for zero-defect manufacturing in automotive camera modules - while delivering low thermal resistance (θJA = 43.3°C/W).
Can the output voltages of the MAX20049ATED/VY+T be adjusted externally?
No, the MAX20049ATED/VY+T features factory-programmed output voltages with no external feedback resistors. Buck1/Buck2 offer fixed options including 3.1V and 1.8V; LDO3 is set to 2.8V and LDO4 to 1.2V for this specific variant. Voltage selection is determined at wafer sort and cannot be modified in-system.
MAX20049ATED/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
- Topology:
- Step-Down (Buck) (2), Linear (LDO) (2)
- Number of Outputs:
- 4
- Frequency - Switching:
- 2.2MHz
- Voltage/Current - Output 1:
- Fixed, Fixed, Fixed, 3V, 500mA
- Voltage/Current - Output 2:
- Fixed, Fixed, Fixed, 3.1V, -
- Voltage/Current - Output 3:
- Fixed, Fixed, Fixed, 3.3V, -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 5V ~ 17V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-SW-TQFN (3x3)
MAX20049ATED/VY+T FAQ
1.How can I place an order for MAX20049ATED/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049ATED/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 MAX20049ATED/VY+T reliable?
The price and inventory of MAX20049ATED/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 MAX20049ATED/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20049ATED/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049ATED/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049ATED/VY+T?
MAX20049ATED/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049ATED/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 MAX20049ATED/VY+T?
For technical support, including MAX20049ATED/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049ATED/VY+T requirements.
6.How does Aetrix verify that MAX20049ATED/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20049ATED/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 MAX20049ATED/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20049ATED/VY+T?
All MAX20049ATED/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049ATED/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 MAX20049ATED/VY+T part is unused and in its original packaging.
Return procedure for MAX20049ATED/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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