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Analog Devices Inc./Maxim Integrated MAX20472DATCC/V+T
- Part No.:
- MAX20472DATCC/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20472DATCC/V+T.pdf
- Description:
- IC REG BOOST 500MA/1A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,598
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Product details
Overview
The MAX20472DATCC/V+T from Analog Devices is a high-efficiency, automotive-grade synchronous boost converter IC designed for low-voltage point-of-load regulation in CAN transceiver and sensor supply rails. It delivers 500mA output at factory-configured 3.85V from a 3.0V–4.0V input, achieves ±1.5% output voltage accuracy over -40°C to +125°C, operates at 2.2MHz fixed-frequency PWM mode, and integrates True Shutdown™, soft-start (1.9ms), and open-drain RESET with UV/OV monitoring.
For engineers reviewing the MAX20472DATCC/V+T datasheet, MAX20472DATCC/V+T pinout, MAX20472DATCC/V+T application, or MAX20472DATCC/V+T equivalent, this page provides verified technical context, validated pin functions, confirmed automotive thermal and protection behavior, and real-world selection guidance against comparable boost converters for CAN, ADAS, and body electronics designs.
Technical Context
This device implements current-mode control with forced-PWM and skip-mode operation selectable via SYNC pin, enabling optimized EMI performance and light-load efficiency. Its internal 2.2MHz oscillator supports spread-spectrum modulation (±3%) and external synchronization up to 2.6MHz.
The IC integrates matched pMOS (150mΩ) and nMOS (100mΩ) power switches, features factory-trimmed 3.85V output with 50mV step granularity, and includes diagnostics: 93±2% UV and 107±2% OV thresholds on RESET, thermal shutdown at 165°C with 15°C hysteresis, and hiccup-mode recovery from startup shorts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-set 3.85V ±1.5% - stable rail for CAN transceivers requiring precise VCC bias |
| Output Current | 500mA continuous - sufficient for dual CAN FD transceivers or multiple sensors |
| Input Voltage Range | 3.0V to 4.0V - compatible with automotive 3.3V LDO outputs and battery-supervised domains |
| Switching Frequency | 2.2MHz fixed - enables use of small 1µH inductor and all-ceramic 22µF output capacitor |
| Operating Temperature | -40°C to +125°C - qualified for under-hood and junction-box automotive applications |
| Protection Features | Overtemperature (165°C), short-circuit, UV/OV monitoring, hiccup-mode restart - ensures fail-safe operation in harsh environments |
| Shutdown Current | 0.1µA typical - preserves battery life during vehicle sleep modes |
Pinout & Package
MAX20472DATCC/V+T is housed in a 12-pin 3mm × 3mm TDFN-EP package (Package Code TD1233+2C) with exposed thermal pad 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 - tie to AV to activate ±3% frequency dithering for EMI reduction |
| 2 | OUTS | Output voltage feedback - connects directly to output capacitor for regulation loop stability |
| 3 | OUT | Regulated 3.85V output - powers CAN transceivers or sensor analog front-ends |
| 4,5 | LX | Switch node - connects to inductor's switched side; carries high di/dt ripple current |
| 6 | PGND | Power ground - dedicated return path for LX and output capacitor; must be low-inductance |
| 7 | RESET | Open-drain fault indicator - asserts low during UV/OV events; requires external pull-up |
| 8 | GND | Digital ground - tied to EP and PGND for noise isolation and thermal conduction |
| 9 | AV | Analog power supply - powers internal reference and control circuitry; decoupled with 1µF ceramic |
| 10 | EN | Active-high enable - logic-high (>1.5V) initiates soft-start; <0.5V forces True Shutdown™ |
| 11 | SYNC | Mode control - GND = skip mode; AV or external clock = forced-PWM at 2.2MHz |
| 12 | - | No connect - unused pin per datasheet; left floating or grounded per layout best practice |
| EP | Exposed Pad | Thermal and electrical ground - must be soldered to large PCB copper area for θJA = 41°C/W |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | Output discharges to 0V via 300Ω internal resistor when EN = LOW - eliminates leakage paths in battery-sensitive systems |
| Factory-Configured Output | 3.85V preset in 50mV steps - eliminates external feedback resistors and reduces BOM count |
| Integrated Power Switches | pMOS RDS(ON) = 150mΩ / nMOS RDS(ON) = 100mΩ - enables >90% peak efficiency without discrete MOSFETs |
| RESET Diagnostics | UV threshold = 93±2%, OV threshold = 107±2% of 3.85V - provides accurate fault detection for ASIL-B-relevant monitoring |
| Charge Mode | 0.63A (±30%) pre-soft-start current source - safely ramps output from 0V to within 600mV of input before regulation begins |
Applications
| Automotive CAN Transceivers | ADAS Camera Sensor Bias |
|---|---|
Use Scenario: Powering ISO 11898-2/3 compliant CAN FD transceivers in gateway ECUs where input is derived from a 3.3V system rail. IC Role / Device Role / Timing Role: Synchronous boost regulator providing clean, regulated 3.85V VCC with fast load-transient response to handle CAN bus arbitration spikes. Use Value: Eliminates need for discrete boost + LDO cascade; ±1.5% accuracy ensures transceiver compliance across temperature and line variation. |
Use Scenario: Supplying image sensor analog bias (e.g., CIS pixel array) in rear-view or surround-view cameras operating from 3.3V domain. IC Role / Device Role / Timing Role: Low-noise, spread-spectrum-enabled DC-DC converter delivering stable 3.85V with minimal conducted/radiated EMI near sensitive analog imaging circuits. Use Value: 2.2MHz switching avoids interference with common video clock harmonics; True Shutdown™ cuts leakage during camera idle states. |
| Body Control Module (BCM) Sensors | Automotive Infotainment USB Hub |
Use Scenario: Powering multiple LIN or SENT sensors (e.g., door latch, seat position) in BCMs where space and thermal budget are constrained. IC Role / Device Role / Timing Role: Compact, thermally robust boost IC delivering 500mA at 3.85V from shared 3.3V rail with integrated thermal shutdown. Use Value: 12-TDFN package (3mm × 3mm) fits tight layouts; -40°C to +125°C rating matches BCM under-dash environment. |
Use Scenario: Generating auxiliary 3.85V rail for USB Type-C PD controller or level-shifting logic in head-unit infotainment systems. IC Role / Device Role / Timing Role: High-precision, low-ripple boost converter supporting USB enumeration timing requirements with RESET-based fault signaling. Use Value: Open-drain RESET with programmable hold time (0.5–14.8ms) enables synchronized system-level reset sequencing with USB PHY controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20472ATCC/V+T | Same 3.85V output, but 4.2A current limit and 1.7A charge-mode current - higher short-circuit robustness | Preferred for systems with transient-heavy loads (e.g., solenoid drivers); less suitable for ultra-low-power wake-on-CAN | Select MAX20472ATCC/V+T if design requires higher fault-current margin; MAX20472DATCC/V+T optimizes for lower quiescent current and reduced charge-mode stress |
| TPS610992DRCR | 3.3V output (fixed), 400mA, 1.2MHz, no spread spectrum or RESET pin - smaller footprint but fewer diagnostics | Used in non-automotive consumer modules; lacks UV/OV monitoring and automotive temp range | Choose TPS610992DRCR only for cost-sensitive, non-automotive applications without functional safety requirements |
Compared with MAX20472ATCC/V+T, MAX20472DATCC/V+T trades higher current-limit capability for lower charge-mode current (0.63A vs. 1.7A), reducing inrush stress during cold-crank conditions; versus TPS610992DRCR, it adds automotive qualification, diagnostic outputs, and EMI mitigation - critical for CAN and ADAS subsystems.
Availability
MAX20472DATCC/V+T is available at Aetrix Electronics and suitable for automotive CAN transceivers, ADAS camera sensors, body control module (BCM) sensors, and infotainment USB hub designs requiring stable component supply across extended temperature and long lifecycle commitments.
Supply support for MAX20472DATCC/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 connectivity solutions.
The MAX2047x family is part of Analog Devices' automotive power management portfolio, engineered specifically for low-voltage, high-reliability point-of-load conversion in CAN, LIN, and sensor interface applications within ASIL-B compatible systems.
FAQ
What is the factory-configured output voltage of the MAX20472DATCC/V+T?
The MAX20472DATCC/V+T is factory-configured to deliver a precise 3.85V output with ±1.5% accuracy over load, line, and temperature (-40°C to +125°C). This value is laser-trimmed and cannot be adjusted externally - it eliminates feedback resistor networks and ensures consistent performance across production units of the MAX20472DATCC/V+T.
Does the MAX20472DATCC/V+T support spread-spectrum operation, and how is it enabled?
Yes, the MAX20472DATCC/V+T supports spread-spectrum frequency modulation (±3%) to reduce radiated EMI. It is enabled by connecting the SSEN pin to the AV supply rail. When SSEN is high, the internal 2.2MHz oscillator dithers pseudorandomly; when SSEN is low or floating, spread spectrum is disabled. This feature is fully integrated and requires no external components for the MAX20472DATCC/V+T.
How does the RESET pin function on the MAX20472DATCC/V+T, and what are its thresholds?
The RESET pin on the MAX20472DATCC/V+T is an open-drain, active-low fault indicator that asserts low when the 3.85V output falls below 93±2% (3.58V) or rises above 107±2% (4.12V) of nominal. It holds low for a user-selectable timeout (0.5ms to 14.8ms) after regulation resumes. An external pull-up resistor is required to generate a logic-high signal for microcontroller monitoring of the MAX20472DATCC/V+T.
What is the charge-mode current specification for the MAX20472DATCC/V+T, and why does it matter?
The MAX20472DATCC/V+T features a 0.63A (±30%) charge-mode current source, activated at startup to ramp the output from 0V to within 600mV of the input before soft-start begins. This lower charge current - compared to 1.7A in standard variants - reduces inrush stress during cold-crank or low-battery conditions, making the MAX20472DATCC/V+T especially suitable for automotive systems with stringent startup reliability requirements.
Can the MAX20472DATCC/V+T operate in forced-PWM mode, and how is it configured?
Yes, the MAX20472DATCC/V+T operates in forced-PWM mode when the SYNC pin is driven high to AV or supplied with an external clock between 1.7MHz and 2.6MHz. In this mode, switching remains fixed at 2.2MHz regardless of load, ensuring predictable EMI profile and fast transient response - essential for noise-sensitive applications like camera sensors powered by the MAX20472DATCC/V+T.
MAX20472DATCC/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)
MAX20472DATCC/V+T FAQ
1.How can I place an order for MAX20472DATCC/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20472DATCC/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 MAX20472DATCC/V+T reliable?
The price and inventory of MAX20472DATCC/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 MAX20472DATCC/V+T is usually 5 days.
3.What payment methods are accepted for MAX20472DATCC/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20472DATCC/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20472DATCC/V+T?
MAX20472DATCC/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20472DATCC/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 MAX20472DATCC/V+T?
For technical support, including MAX20472DATCC/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20472DATCC/V+T requirements.
6.How does Aetrix verify that MAX20472DATCC/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20472DATCC/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 MAX20472DATCC/V+T meets industry standards.
7.What is the process for return or replacement of MAX20472DATCC/V+T?
All MAX20472DATCC/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20472DATCC/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 MAX20472DATCC/V+T part is unused and in its original packaging.
Return procedure for MAX20472DATCC/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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