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

Analog Devices Inc./Maxim Integrated MAX20472CATCA/V+T

Name: MAX20472CATCA/V+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX20472CATCA/V+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX20472CATCA/V+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 12-WFDFN Exposed Pad

Datasheet:: MAX20472CATCA/V+T.pdf

Description:: IC REG BOOST 500MA/1A 12TDFN

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Product details

Overview

MAX20472CATCA/V+T from Analog Devices is a high-efficiency, automotive-grade synchronous boost converter IC that steps up 3.0V–4.0V input to a factory-configured 5.0V output at up to 500mA, achieving ±1.5% output voltage accuracy over load, line, and temperature (−40°C to +125°C). It integrates low-R_DS(ON) pMOS/nMOS switches (150mΩ/100mΩ), operates at 2.2MHz fixed-frequency PWM for EMI control, and features True Shutdown™, soft-start (1.9ms), and open-drain RESET with selectable timeout (0.5ms–14.8ms). It powers automotive CAN transceivers requiring stable 5V bias under cold-crank conditions.

For engineers reviewing the MAX20472CATCA/V+T datasheet, MAX20472CATCA/V+T pinout, MAX20472CATCA/V+T application, or MAX20472CATCA/V+T equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive operating range (−40°C to +125°C), exact output configuration (5.0V, 500mA), and real-world design implications of spread-spectrum enable (SSEN), SYNC-controlled mode switching, and charge-mode startup behavior.

Technical Context

The MAX20472CATCA/V+T implements current-mode control with forced-PWM (FPWM) and pulse-skipping operation, selected via the SYNC pin: FPWM at 2.2MHz when SYNC = V_AV, skip mode when SYNC = GND. Its internal oscillator supports ±3% spread-spectrum modulation (enabled by SSEN high) to reduce radiated emissions without external components.

It integrates dual MOSFETs (pMOS R_DS(ON) = 150mΩ, nMOS R_DS(ON) = 100mΩ), 4.2A current-limit threshold, thermal shutdown at 165°C (15°C hysteresis), and UV/OV monitoring on RESET (93±2% UV, 107±2% OV). Charge mode initiates at enable with 1.7A (±30%) current source to pre-charge OUT to within 600mV of VIN before soft-start.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Factory-set 5.0V ±1.5% - ensures precise bias for CAN transceivers and microcontroller I/O rails without external feedback resistors.
Output Current	500mA continuous - supports full-load operation of dual CAN FD transceivers or multiple automotive sensors.
Input Voltage Range	3.0V to 4.0V - compatible with automotive battery systems during cold-crank (down to ~3.0V) and post-ignition regulation.
Switching Frequency	2.2MHz fixed (FPWM) - enables use of small 1µH inductor and all-ceramic capacitors; minimizes EMI in crowded automotive PCBs.
Operating Temperature	−40°C to +125°C - qualified for under-hood and transmission-control module environments per AEC-Q100.
Shutdown Current	0.1µA to 2µA - preserves battery life in always-on automotive modules during sleep mode.
Reset Accuracy	UV = 93±2%, OV = 107±2% of nominal V_OUT - provides fail-safe system reset with tight fault detection window for safety-critical ECUs.

Pinout & Package

MAX20472CATCA/V+T uses a 12-pin 3mm × 3mm TDFN-EP package (package code TD1233+2C) with exposed pad thermally and electrically connected to PGND. The pinout is identical across MAX20471/MAX20472/MAX20472B variants in this package.

Pin/Terminal	Circuit Role	Design Meaning
1 SSEN	Spread-Spectrum Enable input	High enables ±3% frequency dithering to suppress narrowband EMI peaks; tied to V_AV for compliance with CISPR 25 Class 5.
2 OUTS	Output voltage feedback sense	Direct connection to output capacitor node; enables accurate regulation without external resistor divider.
3 OUT	Main regulated output	5.0V power rail delivering up to 500mA; low-impedance source for CAN transceiver V_CC and MCU peripherals.
4,5 LX	Switch node	Connects to inductor's switched side; carries high di/dt current-requires short, wide trace and ground stitching vias.
6 PGND	Power ground return	Separate low-impedance path for high-current switch return; must be connected directly to exposed pad and local ground plane.
7 RESET	Open-drain fault indicator	Asserts low during UV/OV faults or thermal shutdown; requires external pull-up to system I/O voltage (e.g., 3.3V).
8,12 GND	Analog/ground reference	Reference for internal comparators and bias circuits; connects to same ground net as PGND and exposed pad.
9 AV	Analog supply input	Powers internal reference and control logic; requires dedicated 1µF ceramic decoupling to PGND.
10 EN	Active-high enable	Logic-high (>1.5V) activates converter; internal 1µA pulldown ensures safe default-off state during power-up.
11 SYNC	Mode selection input	GND = skip mode (light-load efficiency); V_AV = forced 2.2MHz PWM (EMI control); no external clock required.
EP	Exposed thermal pad	Must be soldered to solid ground plane for thermal dissipation (θ_JA = 41°C/W) and EMI reduction.

Key Features

Feature	Design Value
True Shutdown™	Output discharges to 0V via 300Ω internal resistor when EN = LOW-eliminates need for external discharge circuit in battery-sensitive applications.
Programmable RESET timeout	Selectable hold times (0.5ms/3.7ms/7.4ms/14.8ms) via factory-trimmed bits-enables matching of system boot sequence timing requirements.
Charge-mode startup	1.7A (±30%) current-source pre-charge brings OUT to within 600mV of VIN before soft-start-prevents brownout during cold-crank startup.
Integrated current-limit protection	4.2A nMOS current-limit threshold with hiccup-mode recovery-sustains short-circuit indefinitely without damage or thermal runaway.
Automotive qualification	AEC-Q100 Grade 0 (−40°C to +125°C) with 100% production testing at temperature extremes-meets functional safety requirements for ASIL-B systems.

Applications

Automotive CAN Transceivers	Body Control Modules (BCM)
Use Scenario: Powering ISO 11898-2/3 compliant CAN FD transceivers (e.g., TJA1044, SN65HVD230) in gateways and domain controllers where input voltage drops to 3.0V during engine cranking. IC Role / Device Role / Timing Role: Primary 5V bias regulator supplying V_CC to transceiver ICs; maintains regulation during <100ms cold-crank dips. Use Value: ±1.5% output accuracy and 2.2MHz switching ensure stable bus signaling and minimal conducted EMI-critical for passing CISPR 25 Level 5 radiated emissions tests.	Use Scenario: Providing regulated 5V supply to microcontrollers, LIN transceivers, and LED drivers in door modules and seat control units. IC Role / Device Role / Timing Role: Point-of-load (POL) DC-DC converter replacing linear regulators to improve efficiency and reduce thermal load in space-constrained enclosures. Use Value: 93% peak efficiency at 3.3V_IN/5V_OUT reduces board temperature rise by >15°C vs. LDO solutions-enabling smaller heatsinks and higher component density.
Advanced Driver Assistance Systems (ADAS) Sensors	Infotainment Power Rails
Use Scenario: Supplying clean 5V power to radar MMICs and camera image sensors in front-facing ADAS ECUs where EMI sensitivity is extreme. IC Role / Device Role / Timing Role: Low-noise boost stage preceding LDO post-regulation; spread-spectrum (SSEN-enabled) suppresses switching harmonics near 24GHz radar bands. Use Value: ±3% spread-spectrum modulation lowers peak radiated emissions by 10dB at 2.2MHz harmonics-directly enabling compliance with stringent OEM EMC specifications.	Use Scenario: Generating 5V rail for USB-C PD controllers, display backlight drivers, and audio codecs in head units where battery voltage varies from 9V–16V via buck pre-regulator. IC Role / Device Role / Timing Role: Secondary boost converter accepting 3.3V–4.0V intermediate bus from primary buck; delivers low-noise 5V at 500mA with fast transient response. Use Value: 1.9ms soft-start prevents inrush current tripping upstream fuses; fast load-transient response (<50µs recovery) maintains display stability during burst-mode GPU activity.

Automotive CAN Transceivers

Body Control Modules (BCM)

Use Scenario: Powering ISO 11898-2/3 compliant CAN FD transceivers (e.g., TJA1044, SN65HVD230) in gateways and domain controllers where input voltage drops to 3.0V during engine cranking.

IC Role / Device Role / Timing Role: Primary 5V bias regulator supplying V_CC to transceiver ICs; maintains regulation during <100ms cold-crank dips.

Use Value: ±1.5% output accuracy and 2.2MHz switching ensure stable bus signaling and minimal conducted EMI-critical for passing CISPR 25 Level 5 radiated emissions tests.

Use Scenario: Providing regulated 5V supply to microcontrollers, LIN transceivers, and LED drivers in door modules and seat control units.

IC Role / Device Role / Timing Role: Point-of-load (POL) DC-DC converter replacing linear regulators to improve efficiency and reduce thermal load in space-constrained enclosures.

Use Value: 93% peak efficiency at 3.3V_IN/5V_OUT reduces board temperature rise by >15°C vs. LDO solutions-enabling smaller heatsinks and higher component density.

Advanced Driver Assistance Systems (ADAS) Sensors

Infotainment Power Rails

Use Scenario: Supplying clean 5V power to radar MMICs and camera image sensors in front-facing ADAS ECUs where EMI sensitivity is extreme.

IC Role / Device Role / Timing Role: Low-noise boost stage preceding LDO post-regulation; spread-spectrum (SSEN-enabled) suppresses switching harmonics near 24GHz radar bands.

Use Value: ±3% spread-spectrum modulation lowers peak radiated emissions by 10dB at 2.2MHz harmonics-directly enabling compliance with stringent OEM EMC specifications.

Use Scenario: Generating 5V rail for USB-C PD controllers, display backlight drivers, and audio codecs in head units where battery voltage varies from 9V–16V via buck pre-regulator.

IC Role / Device Role / Timing Role: Secondary boost converter accepting 3.3V–4.0V intermediate bus from primary buck; delivers low-noise 5V at 500mA with fast transient response.

Use Value: 1.9ms soft-start prevents inrush current tripping upstream fuses; fast load-transient response (<50µs recovery) maintains display stability during burst-mode GPU activity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous boost converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX20472ATCA/V+T	Same 12-TDFN package and 5.0V/500mA output, but with 1.8A charge-mode current (vs. 1.7A) and standard C_OUT option (vs. low-C_OUT variant).	Supports larger output capacitance (up to 100µF) and higher inrush tolerance-preferred for systems with >22µF bulk output caps.	Select MAX20472ATCA/V+T if output capacitor exceeds 40µF or if higher charge-mode current improves cold-crank reliability.
TPS61376RTER	5.0V/400mA boost with 2.5MHz switching, but lacks spread-spectrum, automotive temp rating (−40°C to +85°C only), and integrated UV/OV reset monitoring.	Requires external reset supervisor and EMI filtering-increases BOM count and layout complexity in automotive designs.	Choose TPS61376RTER only for non-automotive industrial applications where AEC-Q100 and integrated RESET are not required.

Compared with MAX20472ATCA/V+T, the MAX20472CATCA/V+T offers tighter charge-mode current tolerance (±30% vs. unspecified) and optimized low-C_OUT support, while TPS61376RTER trades automotive robustness for lower cost in commercial environments-making MAX20472CATCA/V+T the optimal choice for safety-critical, EMI-sensitive automotive POL applications.

Availability

MAX20472CATCA/V+T is available at Aetrix Electronics and suitable for automotive point-of-load, CAN transceiver biasing, and body control module power supply applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX20472CATCA/V+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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.

The MAX2047x family is designed specifically for automotive power management, delivering high-efficiency, low-voltage boost conversion with integrated diagnostics and AEC-Q100 qualification for demanding under-hood and chassis applications.

FAQ

What is the factory-configured output voltage of the MAX20472CATCA/V+T?

The MAX20472CATCA/V+T is factory-configured for a precise 5.0V output voltage with ±1.5% accuracy over load, line, and temperature (−40°C to +125°C). This fixed output eliminates the need for external feedback resistors and ensures consistent biasing for automotive CAN transceivers and microcontroller I/O rails without calibration.

How does the SYNC pin affect the operating mode of the MAX20472CATCA/V+T?

The SYNC pin on the MAX20472CATCA/V+T selects between two modes: connecting SYNC to GND enables pulse-skipping mode for highest light-load efficiency, while connecting SYNC to V_AV forces fixed 2.2MHz PWM operation for predictable EMI performance and improved load-transient response. No external clock source is required in either configuration.

What is the purpose of the SSEN pin on the MAX20472CATCA/V+T?

The SSEN (Spread-Spectrum Enable) pin on the MAX20472CATCA/V+T activates ±3% frequency dithering of the internal 2.2MHz oscillator when pulled high. This spreads radiated EMI energy across a wider bandwidth, reducing peak emissions by up to 10dB-critical for meeting CISPR 25 Class 5 requirements in automotive applications.

Does the MAX20472CATCA/V+T include built-in fault protection?

Yes, the MAX20472CATCA/V+T integrates overtemperature shutdown (165°C trip, 15°C hysteresis), overcurrent protection (4.2A nMOS current limit), short-circuit recovery via hiccup mode, and UV/OV monitoring with open-drain RESET output. These protections operate autonomously without external components, ensuring fail-safe operation in automotive environments.

What package type and thermal characteristics does the MAX20472CATCA/V+T use?

The MAX20472CATCA/V+T uses a 12-pin 3mm × 3mm TDFN-EP package (TD1233+2C) with an exposed thermal pad. Its thermal resistance is θ_JA = 41°C/W and θ_JC = 8.5°C/W on a four-layer board, enabling reliable operation at full 500mA load across −40°C to +125°C ambient when the exposed pad is properly soldered to a solid ground plane.

MAX20472CATCA/V+T Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 12-WFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Up

Output Configuration:: Positive

Topology:: Boost

Output Type:: -

Number of Outputs:: 1

Voltage - Input (Min):: 3V

Voltage - Input (Max):: 4V

Voltage - Output (Min/Fixed):: -

Voltage - Output (Max):: -

Current - Output:: 500mA, 1A

Frequency - Switching:: 2.2MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 12-TDFN (3x3)

MAX20472CATCA/V+T FAQ

1.How can I place an order for MAX20472CATCA/V+T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX20472CATCA/V+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 MAX20472CATCA/V+T reliable?

The price and inventory of MAX20472CATCA/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20472CATCA/V+T is usually 5 days.

3.What payment methods are accepted for MAX20472CATCA/V+T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20472CATCA/V+T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX20472CATCA/V+T?

MAX20472CATCA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX20472CATCA/V+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 MAX20472CATCA/V+T?

For technical support, including MAX20472CATCA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20472CATCA/V+T requirements.

6.How does Aetrix verify that MAX20472CATCA/V+T is sourced from the original manufacturer or authorized distributors?

All MAX20472CATCA/V+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 MAX20472CATCA/V+T meets industry standards.

7.What is the process for return or replacement of MAX20472CATCA/V+T?

All MAX20472CATCA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20472CATCA/V+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 MAX20472CATCA/V+T part is unused and in its original packaging.

Return procedure for MAX20472CATCA/V+T:

1.Submit a request within 90 days.

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

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