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Analog Devices Inc./Maxim Integrated MAX20049DATEE/VY+T
- Part No.:
- MAX20049DATEE/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049DATEE/VY+T.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:1,008
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Product details
Overview
The MAX20049DATEE/VY+T from Analog Devices is a dual 2.2MHz, 1A synchronous step-down converter with two integrated LDOs (150mA LDO3 and 400mA LDO4), designed specifically for automotive camera modules. It delivers four regulated outputs - two buck rails (e.g., 3.1V/1.8V) and two LDO rails (e.g., 2.8V/1.2V) - with factory-set voltages, input voltage monitoring, and power-good signaling across all outputs. Its 3.5V–17V input range supports power-over-coax architectures in surround-view, rear, and front camera systems.
For engineers reviewing the MAX20049DATEE/VY+T datasheet, MAX20049DATEE/VY+T pinout, MAX20049DATEE/VY+T application, or MAX20049DATEE/VY+T equivalent, key selection criteria include AEC-Q100 qualification, 180° out-of-phase buck operation to minimize input ripple, 500mV SUP1 hysteresis for long coax cable compatibility, and fixed-output configuration eliminating external feedback resistors.
Technical Context
The MAX20049DATEE/VY+T integrates two independent PWM buck converters operating at 2.2MHz (±3% spread-spectrum option), each with cycle-by-cycle current limiting, 180° phase offset, and low on-time capability enabling 0.9V–3.8V output from up to 17V input. Both bucks drive ceramic-output capacitors exclusively and feature internal high-side/low-side DMOS switches (RON_HS ≤ 550mΩ, RON_LS ≤ 450mΩ).
It includes a dedicated 5V BIAS regulator powering internal circuitry, a 150mA PMOS LDO3 (2.7V–3.3V, ±2% accuracy) with programmable sequencing, and a 400mA NMOS LDO4 (1.0V–2.0V, ±2.5% accuracy) cascaded from Buck2. All four outputs are continuously monitored for overvoltage/undervoltage events, triggering open-drain PGOOD assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 17V - enables direct connection to automotive power-over-coax cables without preregulation. |
| Switching Frequency | 2.2MHz (typ), ±3% spread-spectrum - reduces EMI peaks and allows compact all-ceramic filter design. |
| Buck Output Current | Up to 1.2A per channel - supports high-current image sensor and serializer loads with minimal thermal derating. |
| LDO3 Output | 2.7V–3.3V, 150mA, ±2% - supplies low-noise bias to CMOS image sensors with >88dB PSRR at 8kHz. |
| LDO4 Output | 1.0V–2.0V (100mV steps), 400mA, ±2.5% - powers serializer/memory cores with 35mV dropout at 400mA. |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 0 for under-hood and camera module environments. |
| Package Thermal Resistance | θJA = 43.3°C/W (4-layer board) - supports sustained 1.2A operation without forced airflow in compact layouts. |
Pinout & Package
MAX20049DATEE/VY+T is housed in a 16-pin side-wettable TQFN (3mm × 3mm) with exposed pad (EP), optimized for automotive reflow and automated optical inspection (AOI). The package supports IPC-7351B land pattern 90-100064 and achieves θJC = 4°C/W for efficient heat transfer to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 PGND1/PGND2 | Power Ground | Low-inductance return path for buck switching currents; must be tied directly to AGND and EP. |
| 2 LX2 / 15 LX1 | Buck Switch Node | High-frequency switching node for Buck2/Buck1; requires tight layout with BST capacitor and minimal loop area. |
| 3 SUP2 / 14 SUP1 | Buck High-Side Supply Input | Provides gate-drive supply for internal high-side MOSFETs; bypassed with 2.2µF X7R ceramic to PGND. |
| 4 BST2 / 13 BST1 | Bootstrap Supply | Connects via 0.1µF ceramic between LX and BST to enable high-side driver; critical for 100% duty-cycle capability. |
| 5 PGOOD | Open-Drain Power-Good | Asserts low when any output violates OV/UV thresholds (e.g., OUTS1 < 92% or >108%); requires 10kΩ pull-up. |
| 6 OUTS2 / 8 OUTS1 | Buck Output Sense | Feedback point for Buck2/Buck1 regulation; connects to output capacitor to reject PCB trace impedance errors. |
| 7 OUTS4 / 10 OUTS3 | LDO Output Sense | Provides regulated 400mA/150mA outputs; OUTS4 sourced from Buck2, OUTS3 optionally from SUP1 or Buck1/2. |
| 9 LDOIN3 | LDO3 Input | Accepts 2.9V–17V input; enables high-PSRR operation when powered from coax or pre-regulated rail. |
| 11 AGND | Analog Ground | Reference for internal comparators and regulators; must be star-connected to PGND at single point near EP. |
| 12 BIAS | Internal 5V Regulator Output | Powers internal logic and gate drivers; bypassed with 4.7µF ceramic to AGND; UVLO threshold = 2.7V–2.9V. |
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 cost. |
| Factory-programmed output voltages | Eliminates external resistor networks, saves PCB area, and ensures consistent performance across production lots. |
| 500mV SUP1 hysteresis | Prevents oscillation during slow-start conditions on long coax cables, enabling reliable startup with low-cost cabling. |
| Integrated thermal shutdown with auto-recovery | Disables IC at 175°C junction temperature and resumes soft-start after 15°C cooldown - no system reset required. |
| Programmable power sequencing | Fixed-order startup (Buck1 → LDO3 → Buck2 → LDO4) ensures proper biasing of image sensor and serializer blocks. |
Applications
| Rear Camera Module | Front ADAS Camera |
|---|---|
|
Use Scenario: Compact 12V-powered rearview camera with 5MP CMOS sensor and GMSL serializer. IC Role / Device Role / Timing Role: Single-chip quad-rail power manager delivering 2.8V (sensor analog), 1.2V (serializer core), 3.1V (sensor IO), and 1.8V (memory interface). Use Value: Replaces discrete buck+LDO solution, reduces BOM count by 7 components, and meets CISPR-25 Class 5 EMI limits via spread-spectrum modulation. |
Use Scenario: Front-facing ADAS camera requiring AEC-Q100 compliance and robust startup over degraded battery voltage. IC Role / Device Role / Timing Role: Primary power controller with 500mV SUP1 hysteresis enabling reliable operation down to 3.5V input during cold-crank. Use Value: Maintains regulated 2.9V/1.1V outputs during 6V–16V transients, eliminating need for external supervisor IC or sequencer. |
| Surround-View System | In-Cabin Driver Monitoring |
|
Use Scenario: Four-camera surround-view ECU where space and thermal density constrain power design. IC Role / Device Role / Timing Role: Dual-buck + dual-LDO supply with 180° phasing to minimize input capacitor heating and PCB hot spots. Use Value: Achieves >92% peak efficiency at 1A load per buck, reducing thermal load by 1.8W vs. non-phased implementation. |
Use Scenario: Low-power in-cabin camera with IR illumination, requiring ultra-low noise for pixel-level accuracy. IC Role / Device Role / Timing Role: LDO3 (2.8V) supplies image sensor analog rail with >88dB PSRR at 8kHz, rejecting switching noise from Buck1. Use Value: Enables clean 12-bit ADC sampling without post-processing correction, improving facial recognition reliability. |
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/V+T | Single 2.2MHz 2A buck + dual LDOs; no second buck; wider 2.7V–22V input; lacks PGOOD monitoring on LDOs. | Suitable only for simpler camera designs needing one high-current rail (e.g., 1.2V @ 2A) plus two low-current LDOs. | Select when system requires higher single-buck current (>1.2A) but does not need independent dual-buck control or full-rail PGOOD. |
| TPS653221AQPWPRQ1 | Triple buck (1.5A/1.5A/0.6A) + single LDO; 3.0V–36V input; no spread spectrum; different sequencing architecture. | Targets broader automotive domains (e.g., radar, infotainment); lacks LDO3's high-PSRR coax-input capability. | Choose for multi-domain ECUs needing >3 rails with wide VIN, but avoid if coax cable compatibility or sensor-specific LDO noise performance is critical. |
Compared with MAX20090ATG/V+T and TPS653221AQPWPRQ1, the MAX20049DATEE/VY+T uniquely combines dual independent 1.2A bucks, coax-optimized LDO3 input, full four-rail PGOOD monitoring, and AEC-Q100 Grade 0 qualification - making it the only solution purpose-built for high-reliability automotive camera modules with strict EMI and noise requirements.
Availability
MAX20049DATEE/VY+T is available at Aetrix Electronics and suitable for automotive camera modules, surround-view systems, and front ADAS camera designs requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MAX20049DATEE/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.
The MAX20049DATEE/VY+T belongs to Analog Devices' automotive power management portfolio, engineered specifically to consolidate power delivery for next-generation camera modules while meeting stringent ISO 26262 functional safety readiness and CISPR-25 EMI requirements.
FAQ
What is the input voltage range supported by the MAX20049DATEE/VY+T?
The MAX20049DATEE/VY+T supports an input voltage range of 3.5V to 17V on SUP1 and SUP2 pins. This wide range enables direct connection to automotive power-over-coax cables and accommodates cold-crank and load-dump transients. The 500mV hysteresis on SUP1 ensures stable operation during slow voltage ramps typical of long coax runs.
How are output voltages configured on the MAX20049DATEE/VY+T?
Output voltages on the MAX20049DATEE/VY+T are factory-programmed and not adjustable in-circuit. Buck1 and Buck2 offer fixed options including 2.8V, 2.9V, 3.1V, 3.3V, and 3.8V. LDO3 is set to 2.7V, 2.8V, 2.9V, 3.0V, or 3.3V; LDO4 is set in 100mV steps from 1.0V to 2.0V. No external resistors are required.
Does the MAX20049DATEE/VY+T provide power-good monitoring for all outputs?
Yes, the MAX20049DATEE/VY+T provides comprehensive power-good monitoring across all four outputs (OUTS1, OUTS2, OUTS3, OUTS4) via a single open-drain PGOOD pin. It asserts low if any output falls below its undervoltage falling threshold (e.g., 92% for buck rails) or rises above its overvoltage rising threshold (e.g., 108% for buck rails).
What thermal protection features does the MAX20049DATEE/VY+T include?
The MAX20049DATEE/VY+T incorporates thermal-overload protection that disables the device when junction temperature exceeds 175°C (typical). After cooling by 15°C (typical), it automatically recovers with a full soft-start sequence - no external reset or intervention is needed. This behavior is verified per AEC-Q100 stress testing protocols.
Is the MAX20049DATEE/VY+T qualified for automotive use?
Yes, the MAX20049DATEE/VY+T is AEC-Q100 qualified (Grade 0, −40°C to +125°C ambient) and designed for automotive camera applications. It meets stringent requirements for reliability, EMI performance (with optional spread-spectrum), and functional robustness in harsh vehicle environments including vibration, temperature cycling, and electrical transients.
MAX20049DATEE/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:
- 3.5V ~ 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)
MAX20049DATEE/VY+T FAQ
1.How can I place an order for MAX20049DATEE/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049DATEE/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 MAX20049DATEE/VY+T reliable?
The price and inventory of MAX20049DATEE/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 MAX20049DATEE/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20049DATEE/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049DATEE/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049DATEE/VY+T?
MAX20049DATEE/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049DATEE/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 MAX20049DATEE/VY+T?
For technical support, including MAX20049DATEE/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049DATEE/VY+T requirements.
6.How does Aetrix verify that MAX20049DATEE/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20049DATEE/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 MAX20049DATEE/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20049DATEE/VY+T?
All MAX20049DATEE/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049DATEE/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 MAX20049DATEE/VY+T part is unused and in its original packaging.
Return procedure for MAX20049DATEE/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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