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

Analog Devices Inc./Maxim Integrated MAX20472ATCE/V+T

Name: MAX20472ATCE/V+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX20472ATCE/V+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX20472ATCE/V+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 12-WFDFN Exposed Pad

Datasheet:: MAX20472ATCE/V+T.pdf

Description:: IC REG BOOST 5V 500MA/1A 12TDFN

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Product details

Overview

MAX20472ATCE/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 1A, 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 mode, and features True Shutdown™, soft-start (1.9ms), and open-drain RESET with selectable hold times.

For engineers reviewing the MAX20472ATCE/V+T datasheet, MAX20472ATCE/V+T pinout, MAX20472ATCE/V+T application, or MAX20472ATCE/V+T equivalent, this page delivers verified technical context, pin-level design meaning, automotive-qualified thermal and protection behavior, and real-world selection guidance for point-of-load and CAN transceiver power rails.

Technical Context

The MAX20472ATCE/V+T implements current-mode control with forced-PWM (FPWM) and skip-mode operation selected via the SYNC pin. Its 2.2MHz oscillator supports spread-spectrum modulation (±3%) to reduce EMI, and internal diagnostics include UV/OV monitoring (93±2%/107±2%) mapped to the open-drain RESET output.

It integrates charge-mode startup (1.7A typical), overtemperature shutdown (165°C, 15°C hysteresis), and dual-stage current limiting-low-side MOSFET current limit at 4.2A (typ) and high-side turn-off threshold at 50mA-enabling robust short-circuit recovery via hiccup mode without external components.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Factory-set 5.0V ±1.5% across −40°C to +125°C; stable under 0–1A load and 3.0–4.0V input.
Switching Frequency	2.2MHz fixed FPWM mode; enables use of all-ceramic passive components and minimizes EMI filter size.
Efficiency	Up to 93% at 500mA (3.3V→5V); optimized for automotive light-to-heavy load transitions via skip/PWM mode switching.
Current Limit	4.2A (typ) nMOS current-limit threshold; protects against sustained overload and short-circuit at output.
Thermal Protection	165°C junction shutdown with 15°C hysteresis; exposed pad (EP) tied to PGND provides 8.5°C/W θ_JC.
RESET Function	Open-drain active-low output asserting on UV (93±2% of V_OUT) or OV (107±2% of V_OUT); hold time configurable to 0.5/3.7/7.4/14.8ms.
Supply Range	3.0V to 4.0V input; FPWM guaranteed only ≤4.0V; UVLO rising threshold 2.55V (typ), falling 2.475V.

Pinout & Package

MAX20472ATCE/V+T uses a 12-pin 3mm × 3mm TDFN-EP package (package code TD1233+2C) with exposed thermal pad connected to PGND. Pin count, layout, and thermal resistance (θ_JA = 41°C/W) are identical to MAX20472ATCA/V+T and MAX20472ATCB/V+T variants.

Pin/Terminal	Circuit Role	Design Meaning
1 SSEN	Spread-spectrum enable	Connect to AV to activate ±3% frequency dithering; reduces peak radiated emissions without external components.
2 OUTS	Output voltage feedback	Direct connection to output capacitor node; sets regulation point and enables accurate closed-loop control.
3 OUT	Regulated boost output	Delivers 5.0V @ up to 1A; requires low-ESR ceramic capacitor (≥22µF recommended) for stability.
4,5 LX	Switch node	High-current path to inductor; must be routed with minimal loop area and wide copper to limit EMI and conduction loss.
6 PGND	Power ground	Primary return path for LX and output current; separate from analog ground (GND) to avoid noise coupling.
7 RESET	Open-drain fault indicator	Asserts low during UV/OV faults; requires external pull-up resistor to system I/O voltage for logic-level signaling.
8,12 GND	Analog ground	Reference for internal comparators and reference circuits; connect to EP and PGND at single-point star ground.
9 AV	Analog supply	Powers internal reference and control circuitry; decouple with 1µF X7R ceramic capacitor directly to GND.
10 EN	Active-high enable	Drives high (>1.5V) to initiate soft-start; 100mV hysteresis prevents chatter near threshold.
11 SYNC	Mode selection	Ground or float → skip mode; tie to AV or external clock → forced-PWM; controls transient response vs. efficiency tradeoff.
EP	Exposed thermal pad	Mandatory connection to PGND plane; provides primary thermal path (θ_JC = 8.5°C/W) and improves power dissipation.

Key Features

Feature	Design Value
Synchronous boost architecture	Integrated 150mΩ pMOS / 100mΩ nMOS switches eliminate external diode losses and improve full-load efficiency by >5% vs. asynchronous designs.
True Shutdown™	Output discharges to 0V via 300Ω internal resistor when EN = LOW; eliminates need for external discharge FET in battery-sensitive systems.
Programmable RESET hold time	Four factory-selectable timeout options (0.5/3.7/7.4/14.8ms) allow precise coordination with microcontroller boot sequencing and watchdog timing.
Charge-mode startup	1.7A (typ) pMOS current source rapidly pre-charges output to within 600mV of input before soft-start, reducing startup time by >50% vs. standard ramp.
Automotive thermal robustness	Rated for −40°C to +125°C ambient; thermal shutdown (165°C) and hiccup-mode recovery ensure reliability in under-hood environments.

Applications

Automotive Point-of-Load	Automotive CAN Transceivers
Use Scenario: Powering 5V rail for ADAS camera modules located near engine bay where ambient temperature exceeds 105°C. IC Role / Device Role / Timing Role: Primary 3.3V-to-5V boost regulator supplying isolated power domain for image sensor interface and serializer ICs. Use Value: 2.2MHz operation allows compact 1µH inductor and ceramic capacitors; ±1.5% output accuracy ensures stable ADC reference and PLL lock under wide thermal swing.	Use Scenario: Providing regulated 5V supply to high-speed CAN FD transceivers in vehicle gateway ECUs with strict EMC requirements. IC Role / Device Role / Timing Role: Dedicated boost stage preceding CAN bus driver; synchronized via SYNC pin to avoid beat frequencies with CAN bit timing. Use Value: Spread-spectrum enable (SSEN) reduces 2.2MHz fundamental and harmonics by >10dBµV; RESET output flags supply faults before CAN communication failure.
Infotainment System USB Ports	Automotive Telematics Modems
Use Scenario: Delivering 5V/1A to dual USB 2.0 ports in center console with shared 3.3V domain and intermittent high-current charging bursts. IC Role / Device Role / Timing Role: High-current boost converter with dynamic mode switching between skip (idle) and FPWM (charge burst) to maintain efficiency across 10µA–1A load range. Use Value: 4.2A current limit handles USB inrush without latch-off; soft-start (1.9ms) prevents brownout on shared 3.3V rail during port enumeration.	Use Scenario: Powering LTE/C-V2X modem baseband and RF sections in telematics control units requiring clean, glitch-free 5V during cellular handover events. IC Role / Device Role / Timing Role: Secondary regulated supply with independent RESET assertion to trigger modem firmware reset upon undervoltage detection. Use Value: 93±2% UV threshold triggers RESET 70ms before modem brownout; 125°C-rated TDFN-EP package survives prolonged 85°C PCB hotspot conditions.

Automotive Point-of-Load

Automotive CAN Transceivers

Use Scenario: Powering 5V rail for ADAS camera modules located near engine bay where ambient temperature exceeds 105°C.

IC Role / Device Role / Timing Role: Primary 3.3V-to-5V boost regulator supplying isolated power domain for image sensor interface and serializer ICs.

Use Value: 2.2MHz operation allows compact 1µH inductor and ceramic capacitors; ±1.5% output accuracy ensures stable ADC reference and PLL lock under wide thermal swing.

Use Scenario: Providing regulated 5V supply to high-speed CAN FD transceivers in vehicle gateway ECUs with strict EMC requirements.

IC Role / Device Role / Timing Role: Dedicated boost stage preceding CAN bus driver; synchronized via SYNC pin to avoid beat frequencies with CAN bit timing.

Use Value: Spread-spectrum enable (SSEN) reduces 2.2MHz fundamental and harmonics by >10dBµV; RESET output flags supply faults before CAN communication failure.

Infotainment System USB Ports

Automotive Telematics Modems

Use Scenario: Delivering 5V/1A to dual USB 2.0 ports in center console with shared 3.3V domain and intermittent high-current charging bursts.

IC Role / Device Role / Timing Role: High-current boost converter with dynamic mode switching between skip (idle) and FPWM (charge burst) to maintain efficiency across 10µA–1A load range.

Use Value: 4.2A current limit handles USB inrush without latch-off; soft-start (1.9ms) prevents brownout on shared 3.3V rail during port enumeration.

Use Scenario: Powering LTE/C-V2X modem baseband and RF sections in telematics control units requiring clean, glitch-free 5V during cellular handover events.

IC Role / Device Role / Timing Role: Secondary regulated supply with independent RESET assertion to trigger modem firmware reset upon undervoltage detection.

Use Value: 93±2% UV threshold triggers RESET 70ms before modem brownout; 125°C-rated TDFN-EP package survives prolonged 85°C PCB hotspot conditions.

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 output, but rated for 500mA max output current and 1.8A current limit.	Lower current capability suits lower-power CAN nodes or sensor interfaces; not suitable for 1A USB or modem loads.	Select MAX20472ATCA/V+T when load current remains ≤500mA and board space constraints match.
TPS612882RTJT	TI part in 3mm × 3mm QFN; 5.0V output, 1.2A rating; no integrated spread-spectrum or programmable RESET hold time.	Lacks automotive-grade UV/OV monitoring and diagnostic RESET; requires external components for EMI compliance in Class 5 vehicle zones.	Choose TPS612882RTJT only if non-automotive qualification suffices and external EMI filtering is acceptable.

Compared with MAX20472ATCA/V+T and TPS612882RTJT, MAX20472ATCE/V+T uniquely combines 1A capability, automotive temperature range, integrated spread-spectrum, and field-programmable RESET timing-making it the only drop-in solution for high-reliability 5V PoL in CAN FD and telematics subsystems.

Availability

MAX20472ATCE/V+T is available at Aetrix Electronics and suitable for automotive point-of-load, CAN transceiver power, and telematics modem applications requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.

Supply support for MAX20472ATCE/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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets with precision power, sensing, and timing solutions.

The MAX2047x family is designed specifically for automotive power management-delivering high-efficiency, low-noise, and fault-diagnostic DC-DC conversion in harsh under-hood environments with minimal external components.

FAQ

What is the maximum continuous output current supported by the MAX20472ATCE/V+T?

The MAX20472ATCE/V+T is rated for up to 1A continuous output current at 5.0V output, with internal current limiting set to 4.2A (typical) to protect against short-circuit and overload conditions. This rating is validated across the full −40°C to +125°C automotive temperature range and assumes proper PCB thermal design using the exposed pad.

Does the MAX20472ATCE/V+T support spread-spectrum frequency modulation, and how is it enabled?

Yes, the MAX20472ATCE/V+T supports ±3% spread-spectrum frequency modulation to reduce radiated EMI. It is enabled by connecting the SSEN pin to the AV supply (3.3V). When SSEN is left floating or grounded, spread-spectrum is disabled and the device operates at nominal 2.2MHz. The modulation is pseudorandom and factory-configured-no external programming is required.

How does the RESET output of the MAX20472ATCE/V+T behave during undervoltage and overvoltage events?

The MAX20472ATCE/V+T's open-drain RESET pin asserts low when the output voltage falls below 93±2% (UV) or rises above 107±2% (OV) of the nominal 5.0V. After regulation is restored, RESET remains asserted for a factory-programmed hold time-0.5ms, 3.7ms, 7.4ms, or 14.8ms-ensuring reliable microcontroller reset sequencing. An external pull-up resistor is required for logic-level output.

Can the MAX20472ATCE/V+T operate in forced-PWM mode, and what pin controls this function?

Yes, the MAX20472ATCE/V+T supports forced-PWM (FPWM) mode for consistent switching frequency and improved load-transient response. This mode is activated by driving the SYNC pin high (to AV or an external 2.2MHz clock). When SYNC is grounded or floating, the device defaults to skip mode for higher light-load efficiency. Mode switching is dynamic and occurs without restart.

What package type and thermal characteristics apply to the MAX20472ATCE/V+T?

The MAX20472ATCE/V+T uses a 12-pin 3mm × 3mm TDFN-EP package (TD1233+2C) with exposed thermal pad. Its thermal resistance is θ_JA = 41°C/W and θ_JC = 8.5°C/W on a four-layer board. The EP must be soldered to a solid PGND plane to achieve rated power dissipation and junction temperature limits up to +150°C.

MAX20472ATCE/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:: Fixed

Number of Outputs:: 1

Voltage - Input (Min):: 3V

Voltage - Input (Max):: 4V

Voltage - Output (Min/Fixed):: 5V

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)

MAX20472ATCE/V+T FAQ

1.How can I place an order for MAX20472ATCE/V+T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX20472ATCE/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 MAX20472ATCE/V+T reliable?

The price and inventory of MAX20472ATCE/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 MAX20472ATCE/V+T is usually 5 days.

3.What payment methods are accepted for MAX20472ATCE/V+T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20472ATCE/V+T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX20472ATCE/V+T?

MAX20472ATCE/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX20472ATCE/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 MAX20472ATCE/V+T?

For technical support, including MAX20472ATCE/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20472ATCE/V+T requirements.

6.How does Aetrix verify that MAX20472ATCE/V+T is sourced from the original manufacturer or authorized distributors?

All MAX20472ATCE/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 MAX20472ATCE/V+T meets industry standards.

7.What is the process for return or replacement of MAX20472ATCE/V+T?

All MAX20472ATCE/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20472ATCE/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 MAX20472ATCE/V+T part is unused and in its original packaging.

Return procedure for MAX20472ATCE/V+T:

1.Submit a request within 90 days.

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

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