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

Analog Devices Inc./Maxim Integrated MAX20049ATEB/VY+T

Name: MAX20049ATEB/VY+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX20049ATEB/VY+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX20049ATEB/VY+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Voltage Regulators - Linear + Switching

Package:: 16-WFQFN Exposed Pad

Datasheet:: MAX20049ATEB/VY+T.pdf

Description:: MINI PMIC FOR REMOTE CAMERA POWE

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Product details

Overview

The MAX20049ATEB/VY+T 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 solution for automotive camera modules. It operates from 5V to 17V input, delivers factory-set outputs (e.g., 3.1V/1.8V/2.8V/1.2V), features 180° out-of-phase buck operation, and supports power-over-coax with 500mV SUP1 hysteresis.

For engineers reviewing the MAX20049ATEB/VY+T datasheet, MAX20049ATEB/VY+T pinout, MAX20049ATEB/VY+T application, or MAX20049ATEB/VY+T equivalent, this device addresses critical requirements in automotive ADAS camera power design-including compact all-ceramic layout, AEC-Q100 qualification, output voltage monitoring across all four rails, and robust thermal/current protection without external sequencing circuitry.

Technical Context

The MAX20049ATEB/VY+T integrates two fixed-frequency PWM buck converters operating at 2.2MHz (±3% spread-spectrum option), each with cycle-by-cycle current limiting, 180° phase shift to minimize input ripple, and low on-time architecture enabling direct 17V-to-0.9V conversion. Its dedicated high-voltage LDOIN3 input supports cascading from Buck1/Buck2 or direct coax cable feed.

It includes a 5V BIAS regulator (with 2.7V–2.9V UVLO and 400–700mV hysteresis), independent voltage monitoring per rail with programmable OV/UV thresholds, and open-drain PGOOD asserting only when all four outputs (OUTS1–OUTS4) are simultaneously in regulation-enabling reliable system-level power sequencing in safety-critical vision systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	5V to 17V - supports direct connection to automotive battery or PoC cables without pre-regulation.
Buck Switching Frequency	2.2MHz (typ), ±3% spread-spectrum - enables use of small 3.3µH inductors and all-ceramic output caps.
Buck Output Current	Up to 1.2A per channel - sufficient for image sensor core and serializer rails in surround-view cameras.
LDO3 Output	2.7V–3.3V, 150mA - factory-set low-noise supply for CMOS image sensors with >88dB PSRR at 8kHz.
LDO4 Output	1.0V–2.0V (100mV steps), 400mA - targets memory/serializer I/O rails with 35–100mV dropout at full load.
Operating Temperature	−40°C to +125°C - qualified per AEC-Q100 Grade 0, suitable for under-hood and camera housing environments.
Package	16-pin side-wettable TQFN (3mm × 3mm, exposed pad) - supports automated optical inspection (AOI) and high thermal reliability.

Pinout & Package

Package: 16-pin side-wettable TQFN (3mm × 3mm), RoHS-compliant, with exposed thermal pad (EP) connected to PCB ground plane for enhanced thermal dissipation (θ_JA = 43.3°C/W).

Pin/Terminal	Circuit Role	Design Meaning
1, 16 PGND1/PGND2	Power Ground	Separate ground returns for Buck1/Buck2 power stages; must be tied to AGND at single point for noise isolation.
2 LX2 / 15 LX1	Buck Switching Node	High-frequency switching node driving external inductor; requires tight loop layout with low-ESR ceramic cap to BST.
3 SUP2 / 14 SUP1	Buck High-Side Supply Input	Internal gate driver supply; each requires 2.2µF X7R ceramic capacitor to AGND for stable bootstrap operation.
4 BST2 / 13 BST1	Bootstrap Capacitor Terminal	Connect 0.1µF ceramic between BSTx and corresponding LXx to sustain high-side MOSFET drive during 100% duty cycle.
5 PGOOD	Open-Drain Power-Good Monitor	Asserts high-impedance only when all four outputs meet OV/UV thresholds; requires external 10kΩ pull-up to BIAS or system rail.
6 OUTS2 / 8 OUTS1	Output Voltage Sense	Feedback nodes for Buck2/Buck1; connect directly to respective output caps to reject PCB trace impedance errors.
7 OUTS4 / 10 OUTS3	LDO Output Terminals	Deliver regulated 1.0–2.0V (400mA) and 2.7–3.3V (150mA); require 2.2µF and 4.7µF ceramic caps respectively for stability.
9 LDOIN3	LDO3 Input Supply	Accepts 2.9–17V input; supports direct PoC feed or cascade from Buck1/Buck2; not recommended to tie directly to SUP1/SUP2.
11 AGND	Analog Ground Reference	Reference for internal comparators, soft-start timers, and PGOOD logic; must be connected to PGND at single point.
12 BIAS	Internal 5V Linear Regulator Output	Powers internal circuitry; bypassed with 4.7µF ceramic cap; UVLO threshold 2.7–2.9V ensures controlled startup.

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 feedback resistors, saves PCB area, and prevents field configuration errors in high-volume camera modules.
500mV SUP1 input hysteresis	Enables reliable startup over long, lossy coax cables without oscillation during slow voltage ramp-up.
Integrated BIAS regulator with UVLO	Provides self-contained bias supply with 2.7–2.9V turn-on threshold and 400–700mV hysteresis for robust system enable.
Per-rail OV/UV monitoring with AND-gated PGOOD	Ensures system-level power integrity: PGOOD asserts only when all four rails (Buck1, Buck2, LDO3, LDO4) are simultaneously in spec.

Applications

Rear-View Camera Module	Front-Facing ADAS Camera
Use Scenario: Compact rear-view camera mounted in vehicle tailgate, powered via 12V battery through long coaxial cable. IC Role / Device Role / Timing Role: Quad-rail PMIC delivering 3.1V (image sensor), 1.8V (serializer), 2.8V (LDO3), and 1.2V (memory) with synchronized soft-start and PGOOD validation. Use Value: 500mV SUP1 hysteresis prevents false shutdown during cable voltage sag; side-wettable TQFN ensures AOI-compatible assembly in space-constrained housings.	Use Scenario: Front-facing camera for lane departure warning and automatic emergency braking, requiring AEC-Q100 compliance and low EMI. IC Role / Device Role / Timing Role: Primary power controller managing sequenced startup of sensor core, ISP, and interface logic with spread-spectrum clocking. Use Value: 2.2MHz switching + optimized pinout minimizes EMI emissions; −40°C to +125°C operation guarantees reliability in engine bay proximity.
Surround-View Camera System	Driver Monitoring Camera
Use Scenario: Four-camera system using identical modules; demands consistent power delivery and minimal board area per module. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete buck + LDO combinations, reducing BOM count and layout complexity. Use Value: Factory-set outputs eliminate calibration; 16-pin TQFN (3mm × 3mm) cuts footprint by >40% vs. legacy solutions with external resistors and regulators.	Use Scenario: In-cabin IR camera for driver drowsiness detection, requiring ultra-low noise on image sensor rail. IC Role / Device Role / Timing Role: Supplies low-noise 2.8V to CMOS sensor via LDO3 (88dB PSRR @ 8kHz) while deriving 1.2V for IR LED driver from LDO4. Use Value: Dedicated high-voltage LDOIN3 input improves PSRR vs. cascaded LDOs; thermal shutdown with auto-recovery maintains uptime during transient overload.

Rear-View Camera Module

Front-Facing ADAS Camera

Use Scenario: Compact rear-view camera mounted in vehicle tailgate, powered via 12V battery through long coaxial cable.

IC Role / Device Role / Timing Role: Quad-rail PMIC delivering 3.1V (image sensor), 1.8V (serializer), 2.8V (LDO3), and 1.2V (memory) with synchronized soft-start and PGOOD validation.

Use Value: 500mV SUP1 hysteresis prevents false shutdown during cable voltage sag; side-wettable TQFN ensures AOI-compatible assembly in space-constrained housings.

Use Scenario: Front-facing camera for lane departure warning and automatic emergency braking, requiring AEC-Q100 compliance and low EMI.

IC Role / Device Role / Timing Role: Primary power controller managing sequenced startup of sensor core, ISP, and interface logic with spread-spectrum clocking.

Use Value: 2.2MHz switching + optimized pinout minimizes EMI emissions; −40°C to +125°C operation guarantees reliability in engine bay proximity.

Surround-View Camera System

Driver Monitoring Camera

Use Scenario: Four-camera system using identical modules; demands consistent power delivery and minimal board area per module.

IC Role / Device Role / Timing Role: Single-chip solution replacing discrete buck + LDO combinations, reducing BOM count and layout complexity.

Use Value: Factory-set outputs eliminate calibration; 16-pin TQFN (3mm × 3mm) cuts footprint by >40% vs. legacy solutions with external resistors and regulators.

Use Scenario: In-cabin IR camera for driver drowsiness detection, requiring ultra-low noise on image sensor rail.

IC Role / Device Role / Timing Role: Supplies low-noise 2.8V to CMOS sensor via LDO3 (88dB PSRR @ 8kHz) while deriving 1.2V for IR LED driver from LDO4.

Use Value: Dedicated high-voltage LDOIN3 input improves PSRR vs. cascaded LDOs; thermal shutdown with auto-recovery maintains uptime during transient overload.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX20049CATEB/VY+T	Wider 4V–17V input range; supports 0.9V–1.9V buck outputs (vs. 0.9V–2V in MAX20049ATEB/VY+T); same LDO specs.	Better suited for low-input systems (e.g., start-stop battery dips); not drop-in due to different UVLO threshold (4V vs. 5V).	Select MAX20049CATEB/VY+T if system must operate below 5V nominal input; otherwise MAX20049ATEB/VY+T provides tighter 5V–17V optimization.
MAX20049DATEB/VY+T	Widest 3.5V–17V input; supports 0.9V–3.3V buck outputs and higher 1.3–1.9A current limit; same LDO specs.	Enables higher-current serializers or future-proof designs; requires verification of thermal margin at 1.9A peak.	Choose MAX20049DATEB/VY+T for next-gen cameras needing >1.2A buck current or sub-4V cold-crank support; MAX20049ATEB/VY+T balances cost and performance for mainstream 1.2A needs.

Compared with MAX20049CATEB/VY+T and MAX20049DATEB/VY+T, the MAX20049ATEB/VY+T offers optimal efficiency and thermal performance within its 5V–17V window, making it the preferred choice for cost-sensitive, volume automotive camera modules where 1.2A buck current and standard 5V UVLO are sufficient.

Availability

MAX20049ATEB/VY+T is available at Aetrix Electronics and suitable for automotive camera modules, ADAS vision systems, and industrial machine vision applications requiring stable component supply, AEC-Q100 qualification, and compact quad-rail power integration.

Supply support for MAX20049ATEB/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 MAX20049ATEB/VY+T belongs to Analog Devices' automotive power management portfolio, engineered specifically to consolidate multi-rail camera power delivery into a single AEC-Q100-qualified IC-reducing size, cost, and design risk in safety-critical vision systems.

FAQ

What input voltage range does the MAX20049ATEB/VY+T support?

The MAX20049ATEB/VY+T supports a 5V to 17V input voltage range on SUP1 and SUP2. This range accommodates standard 12V automotive batteries including cranking transients, and enables direct connection to power-over-coax infrastructure. The 5V rising UVLO threshold and 500mV hysteresis ensure stable startup even with voltage droop on long cables. Operation outside this range may damage the device or cause undefined behavior.

How are output voltages configured on the MAX20049ATEB/VY+T?

Output voltages on the MAX20049ATEB/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. The specific configuration for MAX20049ATEB/VY+T must be confirmed via ordering code or Analog Devices' parametric search tool-no external resistors or pins configure these values.

Does the MAX20049ATEB/VY+T include built-in protection features?

Yes, the MAX20049ATEB/VY+T integrates cycle-by-cycle current limiting on both buck converters, thermal shutdown with automatic recovery at +175°C (typ), overvoltage protection that disables the high-side MOSFET during fault, and comprehensive undervoltage/overvoltage monitoring on all four output rails. These protections operate independently per rail and feed into the AND-gated PGOOD signal, ensuring system-level fault detection without external supervision circuitry.

What is the purpose of the PGOOD pin on the MAX20049ATEB/VY+T?

The PGOOD pin on the MAX20049ATEB/VY+T is an open-drain output that goes high-impedance only when all four regulated outputs (OUTS1, OUTS2, OUTS3, OUTS4) simultaneously meet their respective overvoltage and undervoltage thresholds. It does not assert until full soft-start completion and stable regulation. A 10kΩ pull-up resistor to BIAS or an external supply is required. This enables safe microcontroller or FPGA enable sequencing in automotive camera systems.

Is the MAX20049ATEB/VY+T qualified for automotive use?

Yes, the MAX20049ATEB/VY+T is AEC-Q100 qualified (Grade 0) and rated for operation from −40°C to +125°C ambient temperature. Its package, electrical specifications, and reliability testing-including thermal cycling, humidity bias HAST, and package interconnect tests-are validated per automotive standards. The side-wettable TQFN package further supports automated optical inspection for zero-defect manufacturing in automotive supply chains.

MAX20049ATEB/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)

MAX20049ATEB/VY+T FAQ

1.How can I place an order for MAX20049ATEB/VY+T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX20049ATEB/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 MAX20049ATEB/VY+T reliable?

The price and inventory of MAX20049ATEB/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 MAX20049ATEB/VY+T is usually 5 days.

3.What payment methods are accepted for MAX20049ATEB/VY+T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20049ATEB/VY+T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX20049ATEB/VY+T?

MAX20049ATEB/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX20049ATEB/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 MAX20049ATEB/VY+T?

For technical support, including MAX20049ATEB/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20049ATEB/VY+T requirements.

6.How does Aetrix verify that MAX20049ATEB/VY+T is sourced from the original manufacturer or authorized distributors?

All MAX20049ATEB/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 MAX20049ATEB/VY+T meets industry standards.

7.What is the process for return or replacement of MAX20049ATEB/VY+T?

All MAX20049ATEB/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20049ATEB/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 MAX20049ATEB/VY+T part is unused and in its original packaging.

Return procedure for MAX20049ATEB/VY+T:

1.Submit a request within 90 days.

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

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