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Analog Devices Inc./Maxim Integrated MAX20049ATEF/VY+T
- Part No.:
- MAX20049ATEF/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049ATEF/VY+T.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:1,401
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Product details
Overview
MAX20049ATEF/VY+T from Analog Devices is a dual 2.2MHz, 1A synchronous step-down converter with integrated dual LDOs (150mA LDO3 and 400mA LDO4), delivering four regulated rails for automotive camera modules. It operates from 5V to 17V input, supports factory-set outputs including 3.1V/1.8V/2.8V/1.2V, features 180° out-of-phase buck operation, and integrates overvoltage/undervoltage monitoring with 500mV hysteresis for power-over-coax cable compatibility.
For engineers reviewing the MAX20049ATEF/VY+T datasheet, MAX20049ATEF/VY+T pinout, MAX20049ATEF/VY+T application, or MAX20049ATEF/VY+T equivalent, key selection criteria include AEC-Q100 qualification, side-wettable 3mm × 3mm TQFN-16 package, fixed-output voltage options without external resistors, spread-spectrum EMI reduction, and integrated thermal shutdown with automatic recovery.
Technical Context
The MAX20049ATEF/VY+T implements two independent PWM-controlled buck converters operating at 2.2MHz (±3% spread-spectrum option), each with cycle-by-cycle current limiting and 180° phase offset to minimize input ripple. Its dedicated high-voltage LDOIN3 input (up to 17V) enables direct connection to coax cables or cascading from Buck1/Buck2 outputs, improving PSRR beyond 88dB at 8kHz for LDO3.
All four output rails-OUTS1/OUTS2 (buck sense), OUTS3 (2.7–3.3V LDO), and OUTS4 (1.0–2.0V LDO)-are continuously monitored; PGOOD asserts low on any rail's undervoltage (95% threshold) or overvoltage (102.5–115%) violation. Soft-start sequencing is factory-programmed: Buck1 initiates first (3V/ms ramp), followed by LDO3, then Buck2 (gated by Buck1 regulation), and finally LDO4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 17V - supports direct connection to automotive power-over-coax infrastructure 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 loads in surround/rear/front cameras. |
| 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 digital cores (e.g., serializer memory I/O) with low dropout (35mV @ 400mA). |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 0 for under-hood and camera module environments. |
| Package | 16-pin side-wettable TQFN (3mm × 3mm) with exposed pad - enables automated optical inspection (AOI) and robust thermal performance (θJA = 43.3°C/W). |
Pinout & Package
MAX20049ATEF/VY+T is housed in a 16-pin side-wettable TQFN package (3mm × 3mm, outline 21-100150), featuring an exposed thermal pad (EP) connected to PCB ground plane for enhanced heat dissipation. Pin numbering follows standard top-view orientation with Pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | PGND2 / PGND1 | Power ground terminals - must be tied together and to EP for low-impedance return path and thermal conduction. |
| 2, 15 | LX2 / LX1 | Switching node for Buck2/Buck1 - connects to inductor; requires tight layout and 0.1µF BST capacitor to minimize ringing. |
| 3, 14 | SUP2 / SUP1 | High-side switch supply inputs - each requires 2.2µF ceramic bypass to PGND for stable gate drive. |
| 4, 13 | BST2 / BST1 | Bootstrap supply for high-side MOSFET drivers - capacitor placed between BSTx and corresponding LXx. |
| 5 | PGOOD | Open-drain power-good monitor - pulls low if any of OUTS1/OUTS2/OUTS3/OUTS4 violates UV/OV thresholds. |
| 6, 8 | OUTS2 / OUTS1 | Buck output voltage sense points - connect directly to respective output capacitors for accurate regulation. |
| 7, 10 | OUTS4 / OUTS3 | LDO4 and LDO3 output terminals - require 2.2µF and 4.7µF ceramic capacitors respectively for stability. |
| 9 | LDOIN3 | LDO3 input - accepts up to 17V; designed for direct coax input or cascaded from Buck1/Buck2 outputs. |
| 11 | AGND | Analog ground - tied to PGND at single point to minimize noise coupling into sensitive feedback paths. |
| 12 | BIAS | Internal 5V linear regulator output - powers internal circuitry; requires 4.7µF ceramic bypass to AGND. |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable TQFN-16 | Enables AOI-compatible solder joint inspection and improves manufacturing yield in automotive SMT lines. |
| 180° out-of-phase buck operation | Reduces RMS input current ripple by ~30%, allowing smaller input bulk capacitors and lower EMI filter cost. |
| Factory-set output voltages | Eliminates external resistor networks, saving PCB area and eliminating calibration drift in harsh automotive environments. |
| 500mV SUP1 hysteresis | Prevents false toggling during slow power-up over long coax cables, ensuring reliable startup in vehicle camera systems. |
| Integrated thermal shutdown | Triggers at +175°C junction temperature with 15°C hysteresis and automatic soft-start recovery - no system reset required. |
| Spread-spectrum modulation | ±3% frequency dithering reduces peak EMI emissions by >10dB, easing compliance with CISPR 25 Class 5 limits. |
Applications
| Camera Module - Rear View | Camera Module - Front ADAS |
|---|---|
|
Use Scenario: High-resolution rearview camera powered via 12V battery through 5m coax cable with minimal shielding. IC Role / Device Role / Timing Role: Quad-rail PMIC providing 3.1V (image sensor analog), 1.8V (serializer), 2.8V (sensor I/O), and 1.2V (memory interface) with synchronized soft-start. Use Value: 500mV SUP1 hysteresis prevents brownout-induced restarts; 2.2MHz switching allows <3mm² total passive area for full power solution. |
Use Scenario: Front-facing ADAS camera requiring AEC-Q100 compliance, low EMI, and fast power sequencing for lane-departure warning. IC Role / Device Role / Timing Role: Single-chip power manager delivering sequenced 3.3V (ISP core), 1.8V (MIPI PHY), 2.9V (sensor bias), and 1.1V (digital logic) rails. Use Value: Spread-spectrum mode suppresses narrowband EMI peaks near 2.2MHz harmonics; 180° phasing cuts input ripple current by 42% vs. in-phase design. |
| Camera Module - Surround View | Point-of-Load Camera System |
|
Use Scenario: Four-corner surround-view system with space-constrained PCBs and shared coax power distribution. IC Role / Device Role / Timing Role: Dual-buck + dual-LDO IC generating four independent rails with factory-configured 2.8V/1.8V/2.8V/1.2V outputs and default Buck1→LDO3→Buck2→LDO4 sequencing. Use Value: Side-wettable TQFN enables 100% solder-joint AOI; integrated OV/UV monitoring replaces discrete supervisor ICs. |
Use Scenario: Compact OEM camera module where board area is constrained and thermal management is critical. IC Role / Device Role / Timing Role: Highly integrated quad-output regulator replacing discrete buck + LDO combinations, reducing component count from ≥12 to 1 IC + 7 passives. Use Value: 43.3°C/W θJA enables 1.2A continuous operation at +85°C ambient without heatsink; low RDS(ON) (300mΩ HS / 250mΩ LS) minimizes conduction loss. |
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 |
|---|---|---|---|
| MAX20049CATEF/VY+T | Wider 4V–17V input range; supports 0.9V–1.9V buck outputs (vs. 0.9V–2V in MAX20049ATEF/VY+T); identical LDO3/LDO4 specs. | Preferred for systems with lower minimum input (e.g., start-stop battery dips below 5V) or requiring sub-1.0V digital rails. | Select MAX20049CATEF/VY+T only if 4V UVLO threshold or 0.9V buck output is required; otherwise MAX20049ATEF/VY+T offers optimal fit for standard 5V–17V coax-fed cameras. |
| MAX20049DATEF/VY+T | Extended 3.5V–17V input; supports 0.9V–3.3V buck outputs and higher 1.3–1.9A current limit; same LDO configuration. | Suitable for high-current camera modules (e.g., 8MP+ sensors) needing >1.2A buck capability or deeper input voltage headroom. | Choose MAX20049DATEF/VY+T when buck load exceeds 1.2A or system must operate reliably down to 3.5V - not a drop-in replacement due to different current-limit thresholds and sequencing behavior. |
Compared with MAX20049CATEF/VY+T and MAX20049DATEF/VY+T, the MAX20049ATEF/VY+T provides the optimal balance of input voltage margin (5V–17V), buck current (1.2A), and footprint efficiency for mainstream automotive camera modules, avoiding overdesign while maintaining AEC-Q100 compliance and coax cable compatibility.
Availability
MAX20049ATEF/VY+T is available at Aetrix Electronics and suitable for automotive camera modules, surround-view systems, and front ADAS vision systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX20049ATEF/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 consumer markets since 1965.
The MAX20049 product line delivers highly integrated, AEC-Q100-qualified power management ICs specifically engineered for automotive camera modules - emphasizing small size, EMI robustness, coax cable compatibility, and seamless sequencing for image sensor and serializer subsystems.
FAQ
What is the input voltage range supported by the MAX20049ATEF/VY+T?
The MAX20049ATEF/VY+T 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 where nominal 12V battery systems experience transient spikes up to 17V and must maintain regulation during cold-crank events. The 5V UVLO rising threshold with 500mV hysteresis ensures reliable startup even with voltage droop on long coax cables.
Does the MAX20049ATEF/VY+T require external resistors to set output voltages?
No, the MAX20049ATEF/VY+T does not require external resistors. All output voltages - including Buck1, Buck2, LDO3, and LDO4 - are factory-programmed during wafer test. For example, typical configurations include 3.1V/1.8V/2.8V/1.2V, with LDO3 available in 2.7V–3.3V and LDO4 in 1.0V–2.0V (100mV steps). This eliminates resistor placement, trimming, and associated drift in automotive environments.
How does the MAX20049ATEF/VY+T handle power sequencing for camera subsystems?
The MAX20049ATEF/VY+T implements factory-programmed default sequencing: Buck1 starts first (3V/ms ramp), followed immediately by LDO3; Buck2 begins only after Buck1 reaches regulation; LDO4 starts once Buck2 is stable. This ensures proper power-up order for image sensors (analog rail first), serializers (digital rail second), and memory interfaces (low-voltage rail last), preventing latch-up or initialization faults.
What thermal protection features are integrated into the MAX20049ATEF/VY+T?
The MAX20049ATEF/VY+T includes thermal-overload protection that disables all regulators when junction temperature exceeds +175°C (typical), then automatically recovers after cooling by 15°C (typical) with full soft-start reinitialization. Combined with its 43.3°C/W θJA in the 3mm × 3mm TQFN package and low RDS(ON) switches, the MAX20049ATEF/VY+T sustains 1.2A continuous output at +85°C ambient without external heatsinking.
Can the MAX20049ATEF/VY+T be used with power-over-coax infrastructure?
Yes, the MAX20049ATEF/VY+T is explicitly designed for power-over-coax applications. Its 5V–17V input range, 500mV SUP1 hysteresis, and dedicated high-voltage LDOIN3 input (up to 17V) allow direct connection to unregulated coax lines. The device tolerates slow voltage ramps and long cable impedance without false triggering, and its 2.2MHz switching enables compact filtering - making it ideal for automotive camera modules fed via coaxial video/power cables.
MAX20049ATEF/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)
MAX20049ATEF/VY+T FAQ
1.How can I place an order for MAX20049ATEF/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049ATEF/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 MAX20049ATEF/VY+T reliable?
The price and inventory of MAX20049ATEF/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 MAX20049ATEF/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20049ATEF/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049ATEF/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049ATEF/VY+T?
MAX20049ATEF/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049ATEF/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 MAX20049ATEF/VY+T?
For technical support, including MAX20049ATEF/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049ATEF/VY+T requirements.
6.How does Aetrix verify that MAX20049ATEF/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20049ATEF/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 MAX20049ATEF/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20049ATEF/VY+T?
All MAX20049ATEF/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049ATEF/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 MAX20049ATEF/VY+T part is unused and in its original packaging.
Return procedure for MAX20049ATEF/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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