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Analog Devices Inc./Maxim Integrated MAX20049DATEJ/VY+
- Part No.:
- MAX20049DATEJ/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20049DATEJ/VY+.pdf
- Description:
- MINI PMIC FOR REMOTE CAMERA POWE
- Quantity:
- Payment:
- Shipping:
Inventory:811
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Product details
Overview
The MAX20049DATEJ/VY+ from Analog Devices is a dual 2.2MHz, 1A synchronous step-down converter with integrated 150mA LDO3 and 400mA LDO4, designed as a single-chip quad-rail power supply for automotive camera modules. It supports 3.5V–17V input (via SUP1/SUP2), delivers factory-set outputs including 3.1V/1.8V/2.8V/1.2V, and integrates voltage monitoring, spread-spectrum EMI reduction, and 180° out-of-phase buck operation to minimize input ripple - deployed in surround-view, rear, and front ADAS camera systems.
For engineers reviewing the MAX20049DATEJ/VY+ datasheet, MAX20049DATEJ/VY+ pinout, MAX20049DATEJ/VY+ application, or MAX20049DATEJ/VY+ equivalent, key selection criteria include its AEC-Q100 qualification, side-wettable 3mm × 3mm TQFN-16 package with exposed pad, fixed-output configuration eliminating external feedback resistors, and dedicated power-good monitoring across all four rails with 500mV hysteresis for coax cable compatibility.
Technical Context
The MAX20049DATEJ/VY+ implements two independent PWM-controlled buck converters operating at 2.2MHz (±3% spread-spectrum option), each with cycle-by-cycle current limiting, 180° phase offset, and minimum off-time of 80ns - enabling direct 17V-to-0.9V conversion without preregulation. Its dual LDOs feature PMOS-based LDO3 (2.7V–3.3V, 150mA) and NMOS-based LDO4 (1.0V–2.0V, 400mA), both powered from dedicated inputs (LDOIN3 and Buck2 output) to maximize PSRR and sequencing flexibility.
Voltage regulation is enforced via internal comparators monitoring all four outputs: undervoltage thresholds at 95% and overvoltage thresholds at 102.5–115% of nominal, with 50µs debounce. Startup sequencing is factory-programmed - Buck1 initiates first (3V/ms ramp), followed by LDO3, then Buck2 (gated by Buck1 regulation), and finally LDO4 - ensuring controlled power-up in image sensor + serializer architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 17V on SUP1/SUP2 - supports long power-over-coax cables with 500mV UVLO hysteresis. |
| Switching Frequency | 2.2MHz fixed (±3% spread-spectrum) - enables all-ceramic, space-constrained designs with 3.3µH inductors. |
| Buck Output Current | Up to 1.2A per channel - sufficient for image sensor core and I/O rails without external current boosting. |
| LDO3 Output | 2.7V–3.3V, ±2% accuracy, 150mA - targets CMOS image sensor analog supplies with high PSRR (88dB @ 8kHz). |
| LDO4 Output | 1.0V–2.0V in 100mV steps, ±2.5% accuracy, 400mA - powers serializer/digital logic with 35mV dropout at 400mA. |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and camera module environments. |
| Package | 16-pin side-wettable TQFN (3mm × 3mm, 0.5mm pitch) with exposed thermal pad - supports automated optical inspection (AOI) and robust thermal dissipation (θJA = 43.3°C/W). |
Pinout & Package
Package: 16-pin side-wettable TQFN (3mm × 3mm), RoHS-compliant, with exposed thermal pad (EP) connected to PCB ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 11 (PGND2, PGND1, AGND) | Power and analog ground reference | Must be shorted together on PCB; forms low-impedance return path for buck switching currents and analog LDO regulation. |
| 2, 15 (LX2, LX1) | Buck converter switching nodes | High-frequency, high-dV/dt nodes requiring tight layout; connect to inductor and BST capacitor (0.1µF ceramic between LX and BST). |
| 3, 14 (SUP2, SUP1) | High-side switch supply inputs | Accept 3.5V–17V input; require 2.2µF X7R ceramic decoupling each to suppress switching noise and sustain gate drive. |
| 4, 13 (BST2, BST1) | Bootstrap supplies for high-side MOSFET drivers | Enable efficient 100% duty-cycle capability; must be capacitively coupled to respective LX pins. |
| 5 (PGOOD) | Open-drain power-good status output | Asserts low when any rail violates OV/UV thresholds; requires external 10kΩ pull-up to BIAS or system supply. |
| 6, 8 (OUTS2, OUTS1) | Output voltage sense points | Remote sensing inputs for Buck2/Buck1 outputs - improve regulation accuracy under PCB trace IR drop. |
| 7, 10 (OUTS4, OUTS3) | LDO output sense terminals | Provide feedback for LDO4 (400mA) and LDO3 (150mA); require 2.2µF and 4.7µF ceramic output capacitors respectively. |
| 9 (LDOIN3) | LDO3 input supply node | Accepts 2.9V–17V input; can be driven from SUP1 (for high-PSRR) or cascaded from Buck1/Buck2 outputs. |
| 12 (BIAS) | Internal 5V linear regulator output | Powers internal circuitry; requires 4.7µF ceramic bypass to AGND; UVLO threshold is 2.7V–2.9V with 400–700mV hysteresis. |
Key Features
| Feature | Design Value |
|---|---|
| Single-chip quad-rail integration | Replaces discrete buck + LDO solutions, reducing BOM count by ≥7 components and PCB area by >40% in camera modules. |
| Factory-programmed output voltages | Eliminates external resistor networks - ensures consistent 3.1V/1.8V/2.8V/1.2V outputs across production lots without calibration. |
| 180° interleaved buck operation | Cuts input RMS current ripple by ~70% versus parallel operation, relaxing input capacitor requirements (2.2µF per rail). |
| Side-wettable TQFN package | Enables automated solder-joint inspection (AOI) for automotive-grade manufacturing traceability and reliability assurance. |
| Coax-cable-optimized UVLO | 500mV hysteresis prevents false toggling during slow-start conditions on long, low-cost coaxial power feeds. |
| Sequenced soft-start architecture | Guarantees safe power-up order: Buck1 → LDO3 → Buck2 → LDO4, preventing backfeed and latch-up in sensor/serializer chains. |
Applications
| Automotive Surround-View Camera | Rear-View Camera Module |
|---|---|
|
Use Scenario: Compact 360° camera ECU powering four image sensors and serializers over coaxial cables. IC Role / Device Role / Timing Role: Quad-rail PMIC delivering 3.1V (sensor analog), 1.8V (serializer I/O), 2.8V (sensor digital), and 1.2V (memory interface) with synchronized sequencing. Use Value: Enables single-chip power architecture with <3mm × 3mm footprint, eliminating discrete regulators and reducing thermal hotspots near optics. |
Use Scenario: Cost-sensitive rear camera with single image sensor, ISP, and HD video encoder. IC Role / Device Role / Timing Role: Supplies 2.8V (CMOS sensor core), 1.2V (ISP core), 1.8V (LVDS transmitter), and 3.3V (IO buffer) from 12V vehicle battery via coax. Use Value: Factory-set outputs remove trimming labor; 500mV UVLO hysteresis ensures stable startup despite voltage sag on 5m coax runs. |
| Front-Facing ADAS Camera | Driver Monitoring System (DMS) |
|
Use Scenario: High-reliability forward collision warning camera operating in engine bay ambient up to +105°C. IC Role / Device Role / Timing Role: Provides AEC-Q100-qualified 3.3V (global shutter sensor), 1.1V (AI accelerator core), 1.8V (MIPI CSI-2 PHY), and 2.9V (lens actuator driver). Use Value: −40°C to +125°C operation and thermal shutdown with 15°C hysteresis ensure uninterrupted function during thermal transients. |
Use Scenario: In-cabin infrared camera with low-noise imager and near-infrared LED driver. IC Role / Device Role / Timing Role: Delivers ultra-low-noise 2.7V (imager analog), 1.0V (processor core), 1.8V (LED driver bias), and 3.1V (IR illumination control) rails. Use Value: LDO3's 88dB PSRR at 8kHz suppresses switching noise from bucks, preserving SNR in low-light imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-rail automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20097ATG/V+ (Analog Devices) | Dual 3A bucks + dual LDOs; wider 2.7V–28V input; no spread spectrum; larger 4mm × 4mm TQFN. | Targets higher-power radar or domain controllers - not optimized for space-constrained camera modules. | Select MAX20097ATG/V+ only if >1.2A buck current or >17V input is required; otherwise MAX20049DATEJ/VY+ offers better size/EMI trade-off. |
| TPS653211CQPWPRQ1 (TI) | Triple buck + triple LDO; 3.0V–36V input; 2.1MHz switching; AEC-Q100 Grade 1; different pinout and sequencing logic. | Designed for general automotive MCU power domains - lacks coax-optimized UVLO and side-wettable package. | Choose TPS653211CQPWPRQ1 for multi-rail MCU systems; MAX20049DATEJ/VY+ remains superior for camera-specific integration and AOI support. |
Compared with MAX20049DATEJ/VY+, MAX20097ATG/V+ trades compactness for higher current headroom, while TPS653211CQPWPRQ1 offers broader rail count at the expense of camera-optimized features like coax hysteresis and side-wettable inspection capability.
Availability
MAX20049DATEJ/VY+ is available at Aetrix Electronics and suitable for automotive surround-view, rear-view, and front-facing ADAS camera modules requiring stable component supply, AEC-Q100 compliance, and space-constrained quad-rail power delivery.
Supply support for MAX20049DATEJ/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 healthcare markets.
The MAX20049DATEJ/VY+ belongs to Analog Devices' automotive power management IC portfolio, engineered specifically to consolidate power delivery for next-generation vision systems - emphasizing small size, coax compatibility, and AEC-Q100 reliability.
FAQ
What input voltage range does the MAX20049DATEJ/VY+ support, and how does it handle slow-start conditions on coax cables?
The MAX20049DATEJ/VY+ supports 3.5V to 17V on both SUP1 and SUP2 inputs. Its UVLO rising threshold is 3.5V with 500mV hysteresis, preventing false toggling during voltage sag on long, low-cost coaxial power feeds - a critical feature for automotive camera installations where cable length exceeds 3 meters. This hysteresis ensures reliable startup even with slow-rising input due to cable capacitance and resistance.
How are output voltages configured on the MAX20049DATEJ/VY+, and can they be adjusted externally?
Output voltages on the MAX20049DATEJ/VY+ are factory-programmed and fixed - Buck1/Buck2 offer 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 DACs are supported; configuration occurs during wafer sort. This eliminates trimming labor and ensures consistent performance across production units - essential for automotive camera BOM stability.
Does the MAX20049DATEJ/VY+ provide power-good monitoring for all four output rails, and what are the thresholds?
Yes, the MAX20049DATEJ/VY+ monitors all four rails (OUTS1, OUTS2, OUTS3, OUTS4) via an "AND"-gated open-drain PGOOD output. Undervoltage falling thresholds are 87–92% for buck rails and 89–95% for LDO rails; overvoltage rising thresholds are 102.5–115%. A 50µs debounce prevents false triggering. PGOOD pulls low if any rail violates these limits - providing system-level fault detection for camera host processors.
What thermal protection features does the MAX20049DATEJ/VY+ include, and how does recovery work?
The MAX20049DATEJ/VY+ incorporates thermal shutdown at +175°C (typical junction temperature) with automatic recovery. Once the die cools by 15°C (typical hysteresis), the device restarts using its internal soft-start sequence - Buck1 first, then LDO3, Buck2, and finally LDO4. This prevents thermal runaway while maintaining autonomous fault recovery in sealed camera housings without external intervention.
Is spread-spectrum frequency modulation enabled on the MAX20049DATEJ/VY+, and how is it configured?
Spread-spectrum frequency modulation is factory-programmed on the MAX20049DATEJ/VY+ and cannot be disabled or adjusted externally. It modulates the 2.2MHz switching frequency by ±3%, reducing peak EMI emissions by up to 10dB - a key enabler for passing CISPR-25 Class 5 radiated emissions tests in automotive camera modules without added shielding or filtering.
MAX20049DATEJ/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, 2.8V, 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)
MAX20049DATEJ/VY+ FAQ
1.How can I place an order for MAX20049DATEJ/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20049DATEJ/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 MAX20049DATEJ/VY+ reliable?
The price and inventory of MAX20049DATEJ/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20049DATEJ/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20049DATEJ/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049DATEJ/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20049DATEJ/VY+?
MAX20049DATEJ/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20049DATEJ/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 MAX20049DATEJ/VY+?
For technical support, including MAX20049DATEJ/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049DATEJ/VY+ requirements.
6.How does Aetrix verify that MAX20049DATEJ/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20049DATEJ/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 MAX20049DATEJ/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20049DATEJ/VY+?
All MAX20049DATEJ/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049DATEJ/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 MAX20049DATEJ/VY+ part is unused and in its original packaging.
Return procedure for MAX20049DATEJ/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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