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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear + Switching

Analog Devices Inc./Maxim Integrated MAX20049CATEA/VY+T

Name: MAX20049CATEA/VY+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX20049CATEA/VY+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX20049CATEA/VY+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Voltage Regulators - Linear + Switching

Package:: 16-WFQFN Exposed Pad

Datasheet:: MAX20049CATEA/VY+T.pdf

Description:: MINI PMIC FOR REMOTE CAMERA PWR

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Product details

Overview

The MAX20049CATEA/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 specifically for automotive camera modules. It operates from 4V to 17V input, delivers factory-set outputs including 3.1V/1.8V buck rails and 2.8V/1.2V LDO rails, and integrates voltage monitoring, spread-spectrum EMI reduction, and 180° out-of-phase buck operation for low input ripple - enabling compact, coax-powered camera power solutions.

For engineers reviewing the MAX20049CATEA/VY+T datasheet, MAX20049CATEA/VY+T pinout, MAX20049CATEA/VY+T application, or MAX20049CATEA/VY+T equivalent, key selection considerations include its AEC-Q100 qualification, side-wettable 3mm × 3mm TQFN-16 package, fixed-output configuration for image sensor and serializer rails, and integrated PGOOD monitoring across all four regulated outputs.

Technical Context

The MAX20049CATEA/VY+T implements two independent PWM buck converters operating at 2.2MHz (±3% spread-spectrum option), each with cycle-by-cycle current limiting and 180° phase offset to minimize input capacitor RMS current. Its dedicated high-voltage LDOIN3 input supports direct connection to power-over-coax cables or cascaded buck outputs, enabling high PSRR (>88dB at 8kHz) for noise-sensitive image sensors.

Buck1 and Buck2 feature ultra-low minimum on-time (enabling 0.9V–3.8V output from 17V input), while LDO3 (2.7V–3.3V, ±2% accuracy) and LDO4 (1.0V–2.0V in 100mV steps, ±2.5%) are factory-programmed with fixed voltages and support flexible sequencing - LDO3 can be triggered by SUP1, OUTS1, or OUTS2, and LDO4 follows Buck2 regulation.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4V to 17V - supports direct connection to automotive power-over-coax cables without external preregulation.
Buck Switching Frequency	2.2MHz (typ), ±3% spread-spectrum - enables use of small 3.3µH inductors and all-ceramic output capacitors.
Buck Output Current	Up to 1.2A per channel - sufficient for powering image sensor analog/digital cores and serializer ICs.
LDO3 Output	2.8V (factory-set), 150mA, ±2% accuracy - supplies low-noise bias to CMOS image sensors requiring stable 2.8V.
LDO4 Output	1.2V (factory-set), 400mA, ±2.5% accuracy - powers serializer memory interfaces 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, exposed pad) - supports automated optical inspection (AOI) and robust thermal performance (θ_JA = 43.3°C/W).

Pinout & Package

MAX20049CATEA/VY+T is housed in a 16-pin side-wettable TQFN package (3mm × 3mm, 0.5mm pitch) with exposed thermal pad (EP) connected to PCB ground plane for enhanced thermal 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 connections for Buck2/Buck1 - require tight layout with minimal loop area to reduce EMI and switching losses.
3, 14	SUP2 / SUP1	High-side switch supply inputs - each requires 2.2µF X7R ceramic bypass capacitor to AGND for stable gate drive.
4, 13	BST2 / BST1	Bootstrap supply pins - each connects via 0.1µF ceramic capacitor between LXx and BSTx to enable high-side MOSFET drive.
5	PGOOD	Open-drain power-good output - goes high-impedance only when all four outputs (OUTS1–OUTS4) are within UV/OV thresholds.
6, 8	OUTS2 / OUTS1	Feedback sense points for Buck2/Buck1 - connect directly to respective output capacitors for accurate regulation.
7, 10	OUTS4 / OUTS3	LDO4/LDO3 output sense terminals - require 2.2µF and 4.7µF ceramic capacitors respectively for stability and PSRR.
9	LDOIN3	LDO3 input - accepts 2.9V–17V; supports direct coax input or cascaded buck output (e.g., OUTS1) to improve PSRR.
11	AGND	Analog ground - must be connected to PGND1/PGND2 at single point near EP to avoid noise coupling into sensitive analog blocks.
12	BIAS	Internal 5V linear regulator output - powers internal circuitry; requires 4.7µF ceramic bypass capacitor to AGND.

Key Features

Feature	Design Value
Side-wettable TQFN-16	Enables automated optical inspection (AOI) of solder joints 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 component count.
500mV SUP1 hysteresis	Prevents false toggling during slow-start conditions on long coax cables, ensuring reliable power-up in automotive camera harnesses.
Factory-programmed output voltages	Eliminates external feedback resistors, reduces BOM count, and guarantees ±2% output accuracy over temperature and load.
Integrated spread-spectrum modulation	Reduces peak radiated emissions by spreading fundamental switching energy across a 3% bandwidth, easing CISPR 25 Class 5 compliance.
Thermal shutdown with auto-recovery	Protects against sustained overload; device resumes soft-start sequence after junction cools by 15°C, avoiding system latch-up.

Applications

Automotive Rear Camera Module	Front-Facing ADAS Camera
Use Scenario: Compact rearview camera mounted on vehicle tailgate, powered via 12V coax cable with minimal board space. IC Role / Device Role / Timing Role: Single-chip quad-rail power manager delivering 3.1V (image sensor analog), 1.8V (serializer), 2.8V (sensor digital I/O), and 1.2V (memory interface). Use Value: Eliminates need for discrete buck + LDO combinations, reduces solution size by >40%, and maintains <±2% output accuracy across −40°C to +125°C.	Use Scenario: High-resolution front camera for lane departure warning and automatic emergency braking, requiring low-noise, tightly regulated supplies. IC Role / Device Role / Timing Role: Dual-buck + dual-LDO PMIC providing sequenced 3.1V→1.8V→2.8V→1.2V startup with PGOOD confirmation for SoC boot control. Use Value: Achieves >88dB PSRR at 8kHz on LDO3 rail, suppressing switching noise from buck stages and preserving image sensor SNR.
Surround-View Camera Hub	Driver Monitoring System (DMS)
Use Scenario: Centralized camera hub aggregating feeds from four exterior cameras, each requiring identical, isolated power rails. IC Role / Device Role / Timing Role: Quad-output regulator with independent voltage monitoring per rail and open-drain PGOOD "AND" logic for system-level fault detection. Use Value: Detects undervoltage/overvoltage on any rail within 50µs debounce time, enabling fast fail-safe response before image corruption occurs.	Use Scenario: In-cabin infrared DMS camera with strict EMI limits and thermal constraints near dashboard electronics. IC Role / Device Role / Timing Role: Compact 2.2MHz buck-LDO PMIC with spread-spectrum modulation and side-wettable TQFN for AOI-capable assembly. Use Value: Meets CISPR 25 Class 5 radiated emissions without added ferrites or shielding, reducing bill-of-materials and validation effort.

Automotive Rear Camera Module

Front-Facing ADAS Camera

Use Scenario: Compact rearview camera mounted on vehicle tailgate, powered via 12V coax cable with minimal board space.

IC Role / Device Role / Timing Role: Single-chip quad-rail power manager delivering 3.1V (image sensor analog), 1.8V (serializer), 2.8V (sensor digital I/O), and 1.2V (memory interface).

Use Value: Eliminates need for discrete buck + LDO combinations, reduces solution size by >40%, and maintains <±2% output accuracy across −40°C to +125°C.

Use Scenario: High-resolution front camera for lane departure warning and automatic emergency braking, requiring low-noise, tightly regulated supplies.

IC Role / Device Role / Timing Role: Dual-buck + dual-LDO PMIC providing sequenced 3.1V→1.8V→2.8V→1.2V startup with PGOOD confirmation for SoC boot control.

Use Value: Achieves >88dB PSRR at 8kHz on LDO3 rail, suppressing switching noise from buck stages and preserving image sensor SNR.

Surround-View Camera Hub

Driver Monitoring System (DMS)

Use Scenario: Centralized camera hub aggregating feeds from four exterior cameras, each requiring identical, isolated power rails.

IC Role / Device Role / Timing Role: Quad-output regulator with independent voltage monitoring per rail and open-drain PGOOD "AND" logic for system-level fault detection.

Use Value: Detects undervoltage/overvoltage on any rail within 50µs debounce time, enabling fast fail-safe response before image corruption occurs.

Use Scenario: In-cabin infrared DMS camera with strict EMI limits and thermal constraints near dashboard electronics.

IC Role / Device Role / Timing Role: Compact 2.2MHz buck-LDO PMIC with spread-spectrum modulation and side-wettable TQFN for AOI-capable assembly.

Use Value: Meets CISPR 25 Class 5 radiated emissions without added ferrites or shielding, reducing bill-of-materials and validation effort.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-rail automotive camera power management applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS650362AQPWPRQ1	Triple buck + single LDO; 2.2MHz switching; no spread-spectrum; 16-pin HTSSOP (5mm × 4.4mm)	Lacks second LDO and coax-input hysteresis; requires external sequencing logic for four-rail coordination	Choose when board space allows larger package and system-level sequencing is already implemented.
MAX20091ATPA/VY+	Dual buck + dual LDO; 2.1MHz; AEC-Q100; but no spread-spectrum, no 500mV SUP hysteresis, and 20-pin TQFN (4mm × 4mm)	Higher pin count increases routing complexity; lacks EMI mitigation features critical for high-frequency camera links	Consider only if legacy design uses identical footprint and spread-spectrum is not required for EMI compliance.

Compared with TPS650362AQPWPRQ1 and MAX20091ATPA/VY+, the MAX20049CATEA/VY+T uniquely integrates coax-optimized hysteresis, factory-programmed fixed outputs, and spread-spectrum modulation in the smallest side-wettable package - delivering superior fit for space-constrained, EMI-sensitive automotive camera modules.

Availability

MAX20049CATEA/VY+T is available at Aetrix Electronics and suitable for automotive rear camera modules, front ADAS vision systems, and surround-view camera hubs requiring stable component supply, AEC-Q100 compliance, and compact power integration.

Supply support for MAX20049CATEA/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 belongs to Analog Devices' automotive power management IC portfolio, engineered specifically to consolidate multi-rail camera power delivery into a single AEC-Q100-qualified device with coax compatibility, EMI resilience, and thermal robustness.

FAQ

What is the input voltage range supported by the MAX20049CATEA/VY+T?

The MAX20049CATEA/VY+T supports an input voltage range of 4V to 17V, optimized for direct connection to automotive power-over-coax cables. This range accommodates nominal 12V systems with transient spikes and brownouts, and the 500mV hysteresis on SUP1 prevents oscillation during slow cable ramp-up - a key requirement validated in MAX20049CATEA/VY+T's AEC-Q100 qualification testing.

How are the output voltages configured on the MAX20049CATEA/VY+T?

The MAX20049CATEA/VY+T features factory-programmed fixed output voltages: Buck1 and Buck2 offer options including 3.1V and 1.8V; LDO3 is set to 2.8V; and LDO4 is set to 1.2V. No external resistors are needed - this eliminates tuning variability and ensures ±2% accuracy over temperature and load, as confirmed in the Electrical Characteristics table of the MAX20049CATEA/VY+T datasheet.

Does the MAX20049CATEA/VY+T include EMI reduction features?

Yes, the MAX20049CATEA/VY+T includes factory-programmable spread-spectrum frequency modulation (±3% around 2.2MHz), which reduces peak radiated emissions. Combined with optimized pinout for tight switching-node layout and 180° out-of-phase buck operation, these features help meet CISPR 25 Class 5 requirements without additional filtering - a capability verified in typical application circuits for the MAX20049CATEA/VY+T.

What protection features does the MAX20049CATEA/VY+T provide?

The MAX20049CATEA/VY+T integrates cycle-by-cycle current limiting on both bucks, thermal shutdown with automatic recovery (trip at +175°C, hysteresis 15°C), overvoltage protection that disables the high-side MOSFET, and comprehensive voltage monitoring on all four outputs with PGOOD assertion. These protections are fully documented in the MAX20049CATEA/VY+T Absolute Maximum Ratings and Detailed Description sections.

Is the MAX20049CATEA/VY+T qualified for automotive use?

Yes, the MAX20049CATEA/VY+T is AEC-Q100 qualified (Grade 0) and specified for operation from −40°C to +125°C ambient temperature. Its side-wettable TQFN-16 package, robust UVLO hysteresis, and integrated diagnostics (e.g., PGOOD AND logic) meet stringent automotive reliability and functional safety requirements - confirmed in the MAX20049CATEA/VY+T Ordering Information and Package Information tables.

MAX20049CATEA/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:: 4V ~ 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)

MAX20049CATEA/VY+T FAQ

1.How can I place an order for MAX20049CATEA/VY+T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX20049CATEA/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 MAX20049CATEA/VY+T reliable?

The price and inventory of MAX20049CATEA/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 MAX20049CATEA/VY+T is usually 5 days.

3.What payment methods are accepted for MAX20049CATEA/VY+T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049CATEA/VY+T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX20049CATEA/VY+T?

MAX20049CATEA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX20049CATEA/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 MAX20049CATEA/VY+T?

For technical support, including MAX20049CATEA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049CATEA/VY+T requirements.

6.How does Aetrix verify that MAX20049CATEA/VY+T is sourced from the original manufacturer or authorized distributors?

All MAX20049CATEA/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 MAX20049CATEA/VY+T meets industry standards.

7.What is the process for return or replacement of MAX20049CATEA/VY+T?

All MAX20049CATEA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049CATEA/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 MAX20049CATEA/VY+T part is unused and in its original packaging.

Return procedure for MAX20049CATEA/VY+T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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