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Analog Devices Inc./Maxim Integrated MAX20472CATCA/V+
- Part No.:
- MAX20472CATCA/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20472CATCA/V+.pdf
- Description:
- IC REG BOOST 500MA/1A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,059
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Product details
Overview
MAX20472CATCA/V+ from Analog Devices is a high-efficiency, automotive-grade synchronous boost converter IC that steps up 3.0V–4.0V input to a factory-preset 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-RDS(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 targets power rails for automotive CAN transceivers and point-of-load systems.
For engineers reviewing the MAX20472CATCA/V+ datasheet, MAX20472CATCA/V+ pinout, MAX20472CATCA/V+ application, or MAX20472CATCA/V+ equivalent, key selection considerations include its 12-pin 3mm × 3mm TDFN-EP package, 500mA current rating, 5.0V factory-configured output, spread-spectrum enable (SSEN), SYNC-controlled PWM/skip mode operation, and integrated overtemperature (165°C) and short-circuit protection.
Technical Context
The MAX20472CATCA/V+ implements current-mode control with forced-PWM (FPWM) and pulse-skipping modes selected via the SYNC pin: FPWM enables consistent 2.2MHz switching for stable transient response and noise immunity, while skip mode improves light-load efficiency by reducing switching frequency. Its internal oscillator supports ±3% spread-spectrum modulation to suppress radiated EMI without external components.
It integrates dual MOSFETs with matched on-resistances (150mΩ pMOS / 100mΩ nMOS), a precision UV/OV monitor (93±2% UVACC / 107±2% OVACC) tied to the open-drain RESET output, and a charge-mode startup sequence that delivers up to 1.7A peak current to precharge the output before soft-start. The device enters hiccup mode upon persistent overload or short-circuit after soft-start.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-set 5.0V; ensures stable supply for 5V-tolerant automotive interfaces like CAN transceivers without external feedback resistors. |
| Output Current | 500mA continuous; sufficient for powering multiple CAN FD transceivers or sensor signal chains in compact automotive modules. |
| Input Voltage Range | 3.0V to 4.0V; compatible with automotive battery-supplied 3.3V rails and brownout-prone 12V system derivatives. |
| Switching Frequency | 2.2MHz fixed (FPWM); enables use of small 1µH inductors and all-ceramic capacitors, minimizing board area and BOM count. |
| Voltage Accuracy | ±1.5% over −40°C to +125°C; guarantees reliable regulation across full automotive temperature range without calibration. |
| Protection Features | Overtemperature shutdown (165°C), short-circuit current limit (4.2A), and hiccup-mode recovery; sustains operation under fault conditions without latch-up. |
| Soft-Start Time | 1.9ms fixed; limits inrush current during power-up to prevent input rail droop in shared automotive power domains. |
Pinout & Package
MAX20472CATCA/V+ uses a 12-pin 3mm × 3mm TDFN-EP package (package code TD1233+2C) with exposed thermal pad connected to PGND for enhanced heat dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SSEN | Spread-Spectrum Enable | Logic-high input enabling ±3% frequency dithering to reduce peak radiated EMI emissions without external circuitry. |
| 2 OUTS | Output Voltage Feedback | Connects directly to output capacitor; sets regulated voltage via internal resistor divider-no external components required. |
| 3 OUT | Regulated Boost Output | Delivers 5.0V @ 500mA; powers downstream 5V logic, CAN transceivers, or analog front-ends with low ripple. |
| 4,5 LX | Switch Node | Drives external 1µH inductor; handles high di/dt switching transitions; requires tight layout to minimize EMI and voltage spikes. |
| 6 PGND | Power Ground | High-current return path for LX and internal MOSFETs; must be connected to large copper pour and exposed pad for thermal management. |
| 7 RESET | Open-Drain Fault Indicator | Asserts low when output falls outside 93–107% window; timeout configurable (0.5ms/3.7ms/7.4ms/14.8ms) for system reset sequencing. |
| 8,9 GND | Analog & Digital Ground | Reference for internal bias and control circuits; tied to PGND and exposed pad to minimize ground bounce and noise coupling. |
| 10 AV | Analog Power Supply | Provides clean 3.3V bias for internal references and comparators; requires local 1µF ceramic decoupling to GND. |
| 11 EN | Active-High Enable | Logic threshold ~1.0V with 100mV hysteresis; controls full device startup/shutdown with <2µA shutdown current. |
| 12 SYNC | Mode Control Input | Pull to VAV forces FPWM; float or GND enables skip mode-enables dynamic efficiency optimization in variable-load systems. |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | Drives OUT to 0V with <2µA quiescent current; eliminates standby power loss in always-on automotive modules. |
| Synchronous Boost Architecture | Integrates 150mΩ pMOS and 100mΩ nMOS switches; achieves >90% efficiency at 500mA, reducing thermal load vs. diode-based solutions. |
| Programmable Reset Timeout | Four factory-selectable hold times (0.5ms–14.8ms); matches diverse microcontroller reset timing requirements without external RC networks. |
| Charge-Mode Startup | 1.7A peak precharge current brings output within 600mV of input before soft-start; prevents brownout during cold cranking or battery recovery. |
| Automotive Temperature Range | Rated for −40°C to +125°C junction operation; validated for under-dash and engine-compartment applications per AEC-Q100 stress testing. |
Applications
| Automotive CAN Transceiver Power | Automotive Point-of-Load Regulation |
|---|---|
Use Scenario: Powering isolated CAN FD transceivers in body control modules where 5V supply must remain stable during battery voltage dips (e.g., start-stop cycles). IC Role / Device Role / Timing Role: Synchronous boost converter providing regulated 5.0V rail with fast load-transient response to handle CAN bus dominant/recessive transitions. Use Value: Maintains CAN communication integrity during 3.0V–4.0V input sags; ±1.5% accuracy prevents transceiver undervoltage lockout or data corruption. |
Use Scenario: Generating localized 5V supply for microcontroller I/O peripherals in ADAS domain controllers with strict EMI limits. IC Role / Device Role / Timing Role: High-frequency (2.2MHz) DC-DC regulator enabling compact 1µH inductor + ceramic capacitor design and spread-spectrum EMI suppression. Use Value: Reduces radiated emissions by >10dB in 30–100MHz band versus non-spread alternatives, easing EMC certification for safety-critical systems. |
| Automotive Sensor Signal Chain Bias | Automotive Infotainment USB Interface |
Use Scenario: Supplying precision analog front-ends (e.g., current-sense amplifiers, ADC references) in electric power steering sensors. IC Role / Device Role / Timing Role: Low-noise, high-accuracy boost converter delivering clean 5.0V with <10mV ripple to minimize measurement offset drift. Use Value: Enables <0.1% total unadjusted error in torque sensing; integrated UV/OV monitoring on RESET provides real-time rail health reporting. |
Use Scenario: Powering USB 2.0 PHY and level-shifters in head-unit infotainment systems sharing a 3.3V main rail. IC Role / Device Role / Timing Role: Efficient 500mA boost stage supporting hot-plug USB enumeration with controlled soft-start to avoid host controller reset. Use Value: 1.9ms soft-start prevents USB enumeration failure during system wake-up; True Shutdown eliminates leakage when USB port is inactive. |
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+ | Same 12-TDFN package and 5.0V/500mA output, but supports full 1.7A charge-mode current (vs. 0.63A in MAX20472CATCA/V+). | Better suited for systems requiring faster output precharge into heavy capacitive loads (>40µF). | Select MAX20472ATCA/V+ if rapid startup into large COUT is critical; MAX20472CATCA/V+ suffices for standard 22µF output caps and lower inrush sensitivity. |
| TPS61236PRTWR | 5.0V/1A output, 2.5MHz switching, but lacks spread-spectrum, RESET with UV/OV monitoring, and automotive temp grade (−40°C to +85°C only). | Targeted at consumer portable devices-not qualified for automotive under-hood deployment. | Choose MAX20472CATCA/V+ for AEC-Q100-compliant designs requiring robust fault reporting and extended temperature operation. |
Compared with MAX20472ATCA/V+, MAX20472CATCA/V+ trades higher charge-mode current for tighter cost and smaller solution size in applications with modest startup load capacitance; versus TPS61236PRTWR, it delivers automotive-grade reliability, integrated diagnostics, and EMI-hardened operation essential for vehicle networking subsystems.
Availability
MAX20472CATCA/V+ is available at Aetrix Electronics and suitable for automotive CAN transceiver power, point-of-load regulation, and sensor signal chain biasing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX20472CATCA/V+ 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 designed specifically for automotive power management, delivering compact, high-efficiency boost conversion with integrated diagnostics and AEC-Q100 qualification for demanding under-hood and cabin applications.
FAQ
What is the factory-configured output voltage of the MAX20472CATCA/V+?
The MAX20472CATCA/V+ has a factory-preset output voltage of 5.0V. This fixed setting eliminates the need for external feedback resistors and ensures precise regulation across the full automotive temperature range (−40°C to +125°C) with ±1.5% accuracy. The voltage is trimmed during production and cannot be adjusted externally.
Does the MAX20472CATCA/V+ support spread-spectrum frequency modulation?
Yes, the MAX20472CATCA/V+ supports programmable spread-spectrum frequency modulation via the SSEN pin. When SSEN is pulled high to VAV, the internal oscillator dithers the 2.2MHz switching frequency by ±3%, reducing peak radiated EMI emissions without requiring additional components or layout changes.
How does the RESET output function on the MAX20472CATCA/V+?
The MAX20472CATCA/V+ features an open-drain RESET output that asserts low when the regulated 5.0V output falls outside the 93%–107% window (i.e., below 4.65V or above 5.35V). It remains asserted for a factory-selectable timeout-0.5ms, 3.7ms, 7.4ms, or 14.8ms-after the output recovers, enabling reliable microcontroller reset sequencing.
What is the maximum continuous output current capability of the MAX20472CATCA/V+?
The MAX20472CATCA/V+ delivers up to 500mA of continuous output current at 5.0V. This rating is validated across the full −40°C to +125°C operating temperature range and accounts for internal power losses, thermal derating in the 12-pin TDFN-EP package, and sustained load conditions without thermal shutdown.
Can the MAX20472CATCA/V+ operate in both PWM and skip modes?
Yes, the MAX20472CATCA/V+ supports dual-mode operation controlled by the SYNC pin: pulling SYNC to VAV enables fixed-frequency 2.2MHz PWM mode for optimal transient response and EMI control, while leaving SYNC floating or grounded activates pulse-skipping mode to maximize light-load efficiency-switching dynamically based on output current demand.
MAX20472CATCA/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tray
- 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+ FAQ
1.How can I place an order for MAX20472CATCA/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20472CATCA/V+ 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+ reliable?
The price and inventory of MAX20472CATCA/V+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20472CATCA/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20472CATCA/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20472CATCA/V+?
MAX20472CATCA/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20472CATCA/V+ 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+?
For technical support, including MAX20472CATCA/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20472CATCA/V+ requirements.
6.How does Aetrix verify that MAX20472CATCA/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20472CATCA/V+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX20472CATCA/V+?
All MAX20472CATCA/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20472CATCA/V+, 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+ part is unused and in its original packaging.
Return procedure for MAX20472CATCA/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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