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Analog Devices Inc./Maxim Integrated MAX20472ATCE/V+
- Part No.:
- MAX20472ATCE/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20472ATCE/V+.pdf
- Description:
- IC REG BOOST 5V 500MA/1A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,213
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Product details
Overview
MAX20472ATCE/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 1A continuous load current. It features ±1.5% output voltage accuracy over load, line, and temperature (−40°C to +125°C), 2.2MHz fixed-frequency PWM operation, True Shutdown™, and integrated open-drain RESET with selectable timeout (0.5ms/3.7ms/7.4ms/14.8ms). It is designed for powering CAN transceivers and point-of-load rails in automotive ECUs.
For engineers reviewing the MAX20472ATCE/V+ datasheet, MAX20472ATCE/V+ pinout, MAX20472ATCE/V+ application, or MAX20472ATCE/V+ equivalent, key selection considerations include its 1A output capability, 12-pin 3mm × 3mm TDFN-EP package with exposed thermal pad, spread-spectrum enable (SSEN), SYNC-controlled PWM/skip mode transition, and factory-set 5.0V output with UV/OV monitoring on RESET.
Technical Context
The MAX20472ATCE/V+ implements a current-mode, synchronous boost architecture with integrated high-side (150mΩ) and low-side (100mΩ) MOSFETs, enabling high efficiency across light-to-heavy loads. Its dual-mode control-forced-PWM (2.2MHz) and pulse-skipping-optimizes EMI performance and light-load efficiency without external compensation.
It integrates precision analog functions: factory-trimmed 5.0V output, ±1.5% regulation accuracy, 93% UV and 107% OV thresholds referenced to nominal VOUT, and a programmable soft-start time of 1.9ms. The device supports automotive reliability via overtemperature shutdown (165°C, 15°C hysteresis), short-circuit protection, and robust 125°C junction operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-set 5.0V ±1.5% - ensures stable supply for CAN transceivers and logic without external feedback resistors. |
| Output Current | 1A continuous - supports high-current automotive point-of-load applications including dual CAN FD transceivers. |
| Input Voltage Range | 3.0V to 4.0V - matches battery-supplied automotive domains (e.g., 3.3V rail derived from 12V via LDO). |
| Switching Frequency | 2.2MHz fixed (PWM mode) - enables use of small 1µH inductor and all-ceramic capacitors; minimizes EMI filtering area. |
| Accuracy Monitoring | UV = 93±2%, OV = 107±2% of nominal VOUT - provides fail-safe reset assertion for system-level fault detection. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive environments per AEC-Q100 requirements. |
| Shutdown Current | 0.1–2µA - preserves battery life during vehicle sleep modes with True Shutdown™ disabling output and internal bias. |
Pinout & Package
MAX20472ATCE/V+ is housed in a 12-pin 3mm × 3mm TDFN-EP package (package code TD1233+2C) with exposed thermal pad connected to PGND for enhanced power dissipation (θJA = 41°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SSEN | Spread-Spectrum Enable | High enables ±3% pseudorandom frequency modulation to reduce radiated EMI peaks; tied to AV for activation. |
| 2 OUTS | Output Voltage Feedback | Connected directly to output capacitor; enables internal regulation loop without external resistor divider. |
| 3 OUT | Regulated Output | 5.0V power rail output; capable of sourcing 1A with <10mV load transient deviation (typical). |
| 4,5 LX | Switch Node | Connects to inductor's switched side; handles peak currents up to 4.2A with low RDS(ON) MOSFETs. |
| 6 PGND | Power Ground | Low-impedance return path for high-current switching; must be connected to exposed pad and local ground plane. |
| 7 RESET | Open-Drain Fault Indicator | Asserts low when VOUT falls below 93% or rises above 107%; requires external pull-up for logic-level interface. |
| 8,9 GND | Analog & Power Ground | Dual ground pins minimize noise coupling; both connect to EP and shared ground plane. |
| 10 AV | Analog Supply Input | 3.0–4.0V analog rail; decoupled with 1µF ceramic capacitor to stabilize reference and control circuitry. |
| 11 EN | Active-High Enable | Logic-high (>1.5V) enables converter; includes 100mV hysteresis to prevent chatter near threshold. |
| 12 SYNC | Mode Control Input | GND = skip mode (light-load efficiency); AV or external clock = forced-PWM (fixed 2.2MHz, low-noise). |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Boost Architecture | Integrated 150mΩ pMOS / 100mΩ nMOS switches eliminate external diode losses and simplify layout. |
| True Shutdown™ | Output discharges to 0V via 300Ω internal path; eliminates need for external discharge FET in battery-sensitive systems. |
| Programmable RESET Timeout | Four factory-selectable hold times (0.5ms/3.7ms/7.4ms/14.8ms) allow precise power-on sequencing alignment with MCU boot timing. |
| Spread-Spectrum Modulation | ±3% frequency dithering reduces peak radiated emissions by >10dB, easing CISPR 25 Class 5 compliance. |
| Charge Mode Startup | 2A (typ) pMOS current source pre-charges output to within 600mV of input before soft-start, preventing brownout during cold cranking. |
| Robust Protection Suite | Includes overcurrent (4.2A limit), overtemperature (165°C shutdown), short-circuit recovery (hiccup mode), and UVLO (2.48V rising). |
Applications
| Automotive CAN Transceiver Power | Automotive Point-of-Load Regulation |
|---|---|
Use Scenario: Powering dual CAN FD transceivers (e.g., TCAN1042, SN65HVD256) requiring stable 5V supply from a 3.3V domain. IC Role / Device Role / Timing Role: Synchronous boost converter delivering regulated 5.0V at up to 1A with fast load-transient response (<10µs recovery). Use Value: Eliminates need for discrete boost + LDO cascade; ±1.5% accuracy ensures transceiver VCC compliance across temperature and battery voltage drift. |
Use Scenario: Generating clean 5V rail for microcontroller I/O, sensor interfaces, or LIN transceivers in body control modules. IC Role / Device Role / Timing Role: Primary DC-DC regulator with True Shutdown™ enabling zero-quiescent-current sleep states. Use Value: 0.1µA shutdown current extends battery life in always-on automotive modules; 2.2MHz switching allows compact 1µH/22µF output filter. |
| Automotive Infotainment Display Backlight Bias | ADAS Camera Module Power |
Use Scenario: Supplying 5V bias for LED driver ICs (e.g., TPS61165) in TFT display backlight circuits. IC Role / Device Role / Timing Role: High-efficiency boost stage preceding constant-current LED driver; operates in skip mode during dimming. Use Value: Spread-spectrum modulation suppresses EMI interference with sensitive RF receivers; 125°C operation supports dashboard mounting. |
Use Scenario: Providing isolated 5V rail for image sensor interface and serializer ICs (e.g., DS90UB953) in rear-view cameras. IC Role / Device Role / Timing Role: Automotive-qualified power source with RESET fault signaling for system-level diagnostics and ASIL-B readiness. Use Value: Factory-trimmed UV/OV thresholds (93%/107%) enable deterministic fault detection; hiccup-mode short protection prevents thermal runaway. |
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-pin TDFN-EP package and 2.2MHz operation, but rated for 500mA output (vs. 1A). | Suitable only for lower-current CAN nodes or single-transceiver designs; insufficient for dual-CAN FD or high-power displays. | Select MAX20472ATCA/V+ only if load current remains ≤500mA and thermal margin permits reduced copper area. |
| TPS61288EVM-829 | 1.2A output, 2.1MHz switching, but lacks factory-set 5V output, integrated RESET, and automotive temp range (−40°C to +105°C only). | Requires external feedback resistors and reset supervisor IC; not AEC-Q100 qualified; higher BOM count. | Choose TPS61288 only for non-automotive industrial applications where programmability outweighs qualification and integration benefits. |
Compared with MAX20472ATCA/V+, the MAX20472ATCE/V+ delivers double the output current in identical footprint and thermal performance, while the TPS61288 offers higher current but sacrifices automotive qualification, integrated fault signaling, and factory-trimmed precision - making MAX20472ATCE/V+ optimal for space-constrained, safety-critical automotive power rails.
Availability
MAX20472ATCE/V+ is available at Aetrix Electronics and suitable for automotive CAN transceiver power, point-of-load regulation, and ADAS camera module supply requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MAX20472ATCE/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.
The MAX2047x family is part of Analog Devices' automotive power management portfolio, engineered specifically for high-reliability, low-voltage boost conversion in harsh under-hood environments with minimal external components.
FAQ
What is the factory-configured output voltage of the MAX20472ATCE/V+?
The MAX20472ATCE/V+ is factory-configured for a precise 5.0V output voltage with ±1.5% accuracy over full load, line, and temperature range (−40°C to +125°C). This fixed output eliminates the need for external feedback resistors and ensures compatibility with standard 5V automotive interfaces such as CAN transceivers and legacy microcontrollers. The 5.0V setting is laser-trimmed during production and cannot be adjusted externally.
Does the MAX20472ATCE/V+ support true shutdown with output discharge?
Yes, the MAX20472ATCE/V+ features True Shutdown™, which fully disables the internal power stage and actively discharges the output capacitor through an internal 300Ω path when EN is pulled low. This ensures the OUT pin reaches 0V rapidly, preventing back-powering of downstream circuitry and meeting stringent automotive low-power sleep requirements. The discharge function operates independently of external components.
How does the SYNC pin control operating mode in the MAX20472ATCE/V+?
In the MAX20472ATCE/V+, the SYNC pin selects between two distinct operating modes: pulling SYNC to GND enables pulse-skipping mode for maximum light-load efficiency, while connecting SYNC to AV (or an external 2.2MHz clock) forces fixed-frequency PWM operation for consistent EMI profile and improved load-transient response. Unlike the MAX20472B variant, the MAX20472ATCE/V+ automatically transitions between modes based on load current when SYNC is grounded.
What protection features are integrated into the MAX20472ATCE/V+?
The MAX20472ATCE/V+ integrates overcurrent protection (4.2A threshold), overtemperature shutdown (165°C with 15°C hysteresis), input UVLO (2.48V rising), output UV/OV monitoring (93%/107%), short-circuit recovery (hiccup mode), and charge-mode startup supervision. These protections operate autonomously without external components, ensuring robust operation in automotive environments where voltage transients and thermal stress are common.
Is the MAX20472ATCE/V+ qualified for automotive applications?
Yes, the MAX20472ATCE/V+ is an automotive-qualified part (denoted by "/V+" suffix), meeting AEC-Q100 Grade 0 requirements with guaranteed operation from −40°C to +125°C ambient temperature. It is manufactured in IATF 16949-certified facilities, features enhanced ESD robustness (±2kV HBM), and includes built-in diagnostics such as RESET assertion for system-level functional safety compliance in ASIL-B applications.
MAX20472ATCE/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:
- 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+ FAQ
1.How can I place an order for MAX20472ATCE/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20472ATCE/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 MAX20472ATCE/V+ reliable?
The price and inventory of MAX20472ATCE/V+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20472ATCE/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20472ATCE/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20472ATCE/V+?
MAX20472ATCE/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20472ATCE/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 MAX20472ATCE/V+?
For technical support, including MAX20472ATCE/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20472ATCE/V+ requirements.
6.How does Aetrix verify that MAX20472ATCE/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20472ATCE/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 MAX20472ATCE/V+ meets industry standards.
7.What is the process for return or replacement of MAX20472ATCE/V+?
All MAX20472ATCE/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20472ATCE/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 MAX20472ATCE/V+ part is unused and in its original packaging.
Return procedure for MAX20472ATCE/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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