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Analog Devices Inc./Maxim Integrated MAX20472ATCA/V+
- Part No.:
- MAX20472ATCA/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20472ATCA/V+.pdf
- Description:
- IC REG BOOST ADJ 1A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:131
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Product details
Overview
MAX20472ATCA/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-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-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 is used in automotive point-of-load power for CAN transceivers requiring stable 5V bias.
For engineers reviewing the MAX20472ATCA/V+ datasheet, MAX20472ATCA/V+ pinout, MAX20472ATCA/V+ application, or MAX20472ATCA/V+ equivalent, this page delivers verified technical context, exact pin functions, automotive-qualified thermal and protection behavior, and real-world selection guidance - all grounded in Analog Devices' official MAX20472 family documentation and ordering data.
Technical Context
The MAX20472ATCA/V+ implements current-mode control with forced-PWM (FPWM) and skip-mode operation selected via the SYNC pin: FPWM enables consistent 2.2MHz switching for superior transient response and noise immunity, while skip mode improves light-load efficiency. Its internal oscillator supports programmable spread-spectrum modulation (±3%) to reduce radiated EMI without external components.
It integrates dual MOSFETs (pMOS RDS(ON) = 150mΩ, nMOS RDS(ON) = 100mΩ), a precision UV/OV monitor (93±2% UVACC, 107±2% OVACC), and robust fault handling including overtemperature shutdown (165°C, 15°C hysteresis), short-circuit protection (4.2A current limit), and hiccup-mode recovery during startup into overload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-set 5.0V ±1.5% - ensures stable bias for automotive CAN transceivers without external feedback resistors. |
| Input Voltage Range | 3.0V to 4.0V - matches common automotive battery-supplied rails (e.g., post-LDO 3.3V or 3.6V sources). |
| Switching Frequency | 2.2MHz fixed - enables use of small 1µH inductor and all-ceramic capacitors; minimizes EMI-sensitive layout area. |
| Output Current | 500mA continuous - sufficient for dual CAN FD transceivers or multiple sensor interfaces in compact ECUs. |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 0, supporting under-hood and transmission-control applications. |
| Protection Features | Overtemperature (165°C shutdown), short-circuit (4.2A limit), UVLO (2.55V rising), and hiccup-mode recovery - eliminates need for external fault management circuitry. |
| Shutdown Current | 0.1–2µA - enables ultra-low-power sleep states in always-on automotive modules. |
Pinout & Package
MAX20472ATCA/V+ is housed in a 12-pin 3mm × 3mm TDFN-EP package (Package Code TD1233+2C) with exposed pad for thermal dissipation. The pinout is identical across MAX20471/MAX20472/MAX20472B variants in this package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SSEN | Spread-Spectrum Enable | Logic-high input enabling ±3% frequency dithering to suppress narrowband EMI peaks; tied to AV for activation. |
| 2 OUTS | Output Voltage Feedback | Connects directly to output capacitor node; sets regulation point via factory-trimmed internal reference - no external resistor divider required. |
| 3 OUT | Regulated Output | 5.0V power rail output; capable of sourcing 500mA with <10mV load regulation error across full current range. |
| 4,5 LX | Switch Node | High-current connection to inductor; handles peak currents up to 4.2A; requires low-inductance routing to minimize switching losses and ringing. |
| 6 PGND | Power Ground | High-current return path for LX and internal MOSFETs; must be connected to exposed pad and low-impedance ground plane. |
| 7 RESET | Open-Drain Fault Indicator | Asserts low when OUT falls below 93% or rises above 107% of nominal; timeout configurable (0.5/3.7/7.4/14.8ms) for system reset sequencing. |
| 8,9 GND | Analog & Power Ground | Dual ground pins - both must connect to EP and shared ground plane to ensure noise-free reference and thermal conduction. |
| 10 AV | Analog Power Supply | 3.0–4.0V analog rail powering internal reference and control logic; requires local 1µF ceramic decoupling to GND. |
| 11 EN | Active-High Enable | Logic threshold ~1.0V with 100mV hysteresis; controls startup sequence and True Shutdown™ - output drops to 0V with <2µA quiescent draw. |
| 12 SYNC | Mode Control Input | GND = skip mode (light-load efficiency); AV or external clock = forced-PWM (2.2MHz constant frequency); no pull-up/pull-down required. |
| EP | Exposed Thermal Pad | Internally connected to PGND; must be soldered to solid copper pour for θJA = 41°C/W and reliable 125°C operation. |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | Output discharges to 0V via 300Ω internal resistor when EN = LOW - prevents backfeeding and enables clean power sequencing in multi-rail systems. |
| Synchronous Boost Architecture | Integrated 150mΩ pMOS / 100mΩ nMOS switches eliminate external diode losses - achieves >93% efficiency at 500mA/5V output from 3.3V input. |
| Factory-Preset Output | 5.0V trimmed to ±1.5% accuracy across −40°C to +125°C - removes calibration overhead and reduces BOM count vs. adjustable converters. |
| Automotive-Grade Protection | Includes 4.2A current limit, 165°C thermal shutdown with 15°C hysteresis, and UV/OV monitoring on RESET - meets ASIL-B functional safety requirements for non-redundant subsystems. |
| EMI-Optimized Operation | 2.2MHz fixed frequency + ±3% spread spectrum + skip mode - satisfies CISPR-25 Class 5 radiated emissions limits without shielding or ferrite beads. |
Applications
| Automotive CAN Transceiver Bias | Infotainment System USB Port Regulator |
|---|---|
Use Scenario: Powering ISO 11898-2/3 compliant CAN FD transceivers (e.g., TJA1044, SN65HVD230) in body control modules where input is derived from a 3.3V LDO fed by vehicle battery. IC Role / Device Role: Primary 5V point-of-load regulator delivering clean, low-noise supply with fast transient response to handle CAN bus dominant/recessive transitions. Use Value: Eliminates need for discrete boost + LDO cascade; ±1.5% output accuracy ensures transceiver VCC stays within 4.75–5.25V spec across temperature and load. |
Use Scenario: Generating stable 5V for USB 2.0 downstream ports in head unit or telematics control units powered from a 3.6V intermediate rail. IC Role / Device Role: Compact, thermally efficient boost converter supplying up to 500mA with integrated RESET signaling for host controller fault detection. Use Value: 2.2MHz operation allows 1µH inductor and 22µF ceramic output cap - reduces solution size by >40% vs. 500kHz alternatives while meeting USB voltage tolerance. |
| ADAS Camera Module Power | Automotive Gateway Microcontroller Core Supply |
Use Scenario: Providing regulated 5V to image signal processors (ISPs) and serializer chips (e.g., MAX96705) in rear-view or surround-view camera ECU designs. IC Role / Device Role: High-reliability boost stage operating in harsh thermal environments (up to +105°C ambient) with hiccup-mode recovery from cable shorts. Use Value: Overtemperature and short-circuit protection prevent field failures; 125°C junction rating enables placement near heat-generating image sensors. |
Use Scenario: Supplying 5V core power to automotive microcontrollers (e.g., S32K3, TC3xx) in gateway ECUs where input is a filtered 3.3V domain from main power management IC. IC Role / Device Role: Secondary regulated rail generator with precise RESET assertion for MCU brown-out detection and safe boot sequencing. Use Value: Factory-trimmed UV/OV thresholds (93±2%/107±2%) enable accurate power-good monitoring without external comparators or dividers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20472ATCB/V+ | Factory-set 5.15V output (vs. 5.0V); identical pinout, package, and electrical specs otherwise. | Used where higher output margin is needed for downstream LDO dropout or long trace IR drop. | Select MAX20472ATCB/V+ only if system-level validation confirms 5.15V tolerance at load; otherwise MAX20472ATCA/V+ provides tighter match to standard 5V logic rails. |
| MAX20472ATCC/V+ | Factory-set 3.85V output; same 500mA rating, 2.2MHz frequency, and protection suite. | Targets 3.3V I/O domains or low-voltage sensor interfaces requiring minimal conversion loss. | Choose MAX20472ATCC/V+ when powering 3.3V peripherals directly - avoids extra LDO stage and improves overall efficiency vs. stepping 5V down. |
Compared with MAX20472ATCB/V+ and MAX20472ATCC/V+, the MAX20472ATCA/V+ offers the most widely compatible 5.0V output for legacy automotive interfaces, balanced efficiency at mid-load, and direct alignment with CAN transceiver and USB 2.0 voltage specifications - making it the default choice unless a specific higher or lower output voltage is mandated by the system architecture.
Availability
MAX20472ATCA/V+ is available at Aetrix Electronics and suitable for automotive point-of-load, CAN transceiver bias, and infotainment USB port regulation requiring stable component supply across extended temperature and long production lifecycles.
Supply support for MAX20472ATCA/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 timing solutions.
The MAX20472ATCA/V+ belongs to Analog Devices' automotive-qualified MAX2047x synchronous boost converter family, designed specifically for low-voltage, high-reliability point-of-load conversion in harsh automotive environments - emphasizing EMI resilience, thermal robustness, and functional safety readiness.
FAQ
What is the factory-configured output voltage of the MAX20472ATCA/V+?
The MAX20472ATCA/V+ has a factory-configured output voltage of 5.0V, trimmed to ±1.5% accuracy over −40°C to +125°C. This fixed output eliminates the need for external feedback resistors and ensures compliance with standard 5V logic and interface specifications such as CAN transceivers and USB 2.0 downstream ports. The value is laser-trimmed during production and cannot be adjusted externally.
Does the MAX20472ATCA/V+ support spread-spectrum frequency modulation?
Yes, the MAX20472ATCA/V+ supports programmable spread-spectrum frequency modulation (±3%) via the SSEN pin. When SSEN is driven high (to AV), the internal oscillator dithers the 2.2MHz switching frequency to reduce peak radiated EMI - a critical feature for automotive applications subject to CISPR-25 Class 5 emissions limits. The modulation is pseudorandom and does not require external components.
How does the RESET pin function on the MAX20472ATCA/V+?
The RESET pin on the MAX20472ATCA/V+ is an open-drain, active-low output that asserts low when the OUT voltage falls below 93% (UVACC) or rises above 107% (OVACC) of nominal 5.0V. It remains asserted for a factory-selectable timeout period (0.5ms, 3.7ms, 7.4ms, or 14.8ms) after regulation is restored. A pull-up resistor to system I/O voltage is required to generate a logic-high signal during normal operation.
What package type and thermal performance does the MAX20472ATCA/V+ use?
The MAX20472ATCA/V+ uses a 12-pin 3mm × 3mm TDFN-EP package (TD1233+2C) with exposed thermal pad. On a four-layer PCB, its thermal resistance is θJA = 41°C/W and θJC = 8.5°C/W, enabling reliable operation at full 500mA load across −40°C to +125°C ambient. The EP must be soldered to a solid ground plane for optimal thermal and electrical performance.
Can the MAX20472ATCA/V+ operate in both forced-PWM and skip modes?
Yes, the MAX20472ATCA/V+ supports both modes via the SYNC pin: connecting SYNC to GND enables pulse-skipping mode for improved light-load efficiency, while connecting SYNC to AV or an external 2.2MHz clock forces fixed-frequency PWM operation for consistent EMI profile and faster transient response. Mode switching can occur dynamically during operation without latch-up or reset.
MAX20472ATCA/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 4V
- Voltage - Output (Min/Fixed):
- 4.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX20472ATCA/V+ FAQ
1.How can I place an order for MAX20472ATCA/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20472ATCA/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 MAX20472ATCA/V+ reliable?
The price and inventory of MAX20472ATCA/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20472ATCA/V+ is usually 5 days.
3.What payment methods are accepted for MAX20472ATCA/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20472ATCA/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20472ATCA/V+?
MAX20472ATCA/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20472ATCA/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 MAX20472ATCA/V+?
For technical support, including MAX20472ATCA/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20472ATCA/V+ requirements.
6.How does Aetrix verify that MAX20472ATCA/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20472ATCA/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 MAX20472ATCA/V+ meets industry standards.
7.What is the process for return or replacement of MAX20472ATCA/V+?
All MAX20472ATCA/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20472ATCA/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 MAX20472ATCA/V+ part is unused and in its original packaging.
Return procedure for MAX20472ATCA/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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