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Analog Devices Inc./Maxim Integrated MAX20004AFOA/VY+T
- Part No.:
- MAX20004AFOA/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20004AFOA/VY+T.pdf
- Description:
- IC REG BUCK 5V 4A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,559
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Product details
Overview
MAX20004AFOA/VY+T from Maxim Integrated is a 4A, automotive-grade synchronous buck converter with integrated high-side and low-side MOSFETs, operating from 3.5V to 36V input, delivering fixed 5V or 3.3V output (or adjustable 1V–10V), 25µA quiescent current in skip mode, and resistor-programmable switching frequency from 220kHz to 2.2MHz - used in automotive navigation head units for stable PoL regulation under cold-crank transients.
For engineers reviewing the MAX20004AFOA/VY+T datasheet, MAX20004AFOA/VY+T pinout, MAX20004AFOA/VY+T application, or MAX20004AFOA/VY+T equivalent, this page delivers verified package mapping (17-pin FC2QFN), confirmed AEC-Q100 qualification, validated thermal shutdown (175°C), exact LX current limit (7A typ), and factory-programmable spread-spectrum EMI reduction - all specific to the MAX20004AFOA/VY+T variant.
Technical Context
This device implements current-mode control with internal slope compensation, enabling stable operation across wide VIN–VOUT ratios and load steps. It supports dual operating modes: forced-PWM (FPWM) for EMI-sensitive systems and skip mode for ultra-low-noise, high-efficiency light-load performance - both selectable via the SYNC pin.
The IC integrates a 5V BIAS LDO that powers internal circuitry and transitions to VOUT post-startup in 5V-fixed versions; it features cycle-by-cycle current limiting, 98% max duty cycle for dropout operation, and open-drain RESET with 89–93% UV threshold and 0.2ms hold time - all designed for automotive load-dump (40V) and cold-crank resilience.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 4A continuous - matches MAX20004 variant rating; enables compact PoL designs for infotainment SoCs without external current sense. |
| Input Voltage Range | 3.5V to 36V - supports full automotive battery range including cold-crank (down to 3.5V) and load-dump (up to 40V tolerant). |
| Quiescent Current | 25µA typical in skip mode - sustains always-on subsystems (e.g., CAN wake-up logic) for >1 year on a 10Ah battery. |
| Switching Frequency | 220kHz to 2.2MHz, resistor-programmable - allows trade-off between inductor size (smaller at 2.2MHz) and efficiency (higher at 400kHz). |
| Output Voltage Accuracy | ±2% over line/load/temperature - ensures reliable power delivery to 3.3V/5V microcontrollers and sensors without external trimming. |
| Thermal Shutdown | 175°C with 15°C hysteresis - protects against sustained overload or poor PCB heatsinking in enclosed automotive enclosures. |
| Package | 3.5mm × 3.75mm, 17-pin FC2QFN - enables high-density layout with exposed thermal pad for direct PCB copper thermal coupling. |
Pinout & Package
MAX20004AFOA/VY+T uses a 3.5mm × 3.75mm, 17-pin FC2QFN package with exposed thermal pad (pin 14 = GND). Pin functions are validated per Maxim's official pin description and internal block diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Power output node | Delivers regulated DC output; also supplies internal circuitry when BIAS switches over post-startup. |
| 2 RESET | Open-drain reset signal | Asserts low when VOUT falls below 89–93% of target; requires external pullup for system reset coordination. |
| 3 BST | High-side gate driver supply | Must be decoupled with 0.1µF ceramic capacitor to LX; critical for high-side FET turn-on robustness. |
| 4,5,7,8 PGND | Power ground return | Four dedicated low-impedance paths for switch-node current return; must be joined externally with minimal trace inductance. |
| 6 LX | Switch-node connection | Connects directly to inductor; carries high di/dt ripple current - layout requires short, wide copper pour. |
| 9 SUPSW | High-side switch supply | Provides power to internal FET drivers; bypassed with 0.1µF + 4.7µF ceramics near pins for transient response. |
| 10 SUP | Main supply input | Internally tied to SUPSW; connects directly to battery rail - no series impedance allowed. |
| 11 EN | Enable control | Logic-compatible input; device starts only when VSUP > 7.5V to ensure stable BIAS startup. |
| 12 SYNC | Mode/frequency control | Pull to GND for skip mode; drive to BIAS or external clock for FPWM - voltage must not exceed BIAS/OUT. |
| 13 BIAS | Linear regulator output | 5V LDO output; powers internal logic; transitions to VOUT after startup in 5V-fixed variants for efficiency gain. |
| 14 GND | Analog reference ground | Separate from PGND; connects to feedback network and compensation components to minimize noise coupling. |
| 15 COMP | Error amplifier output | Requires RC compensation network to GND; sets loop stability and transient response per application requirements. |
| 16 FB | Feedback input | Connect to BIAS for fixed 5V/3.3V; connect resistive divider for 1V–10V adjustment - VFB = 1.00V ±1%. |
| 17 FOSC | Frequency setting input | Resistor-to-GND sets fSW; RFOSC = 73.2kΩ yields ~400kHz, 12kΩ yields ~2.2MHz - linear relationship per datasheet equation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | Eliminates external power stage design effort; RHS = 38–76mΩ and RLS = 18–36mΩ reduce conduction loss and board area. |
| 98% maximum duty cycle | Enables operation during severe input undervoltage (e.g., 6V cold-crank with 5V output), minimizing dropout voltage. |
| AEC-Q100 Grade-1 qualification | Validated for -40°C to +125°C ambient operation - meets automotive electronics reliability and lifetime requirements. |
| Spread-spectrum switching (factory option) | ±3% frequency modulation centered on fOSC reduces peak EMI by up to 10dB - critical for CISPR 25 Class 5 compliance. |
| Fixed 5ms soft-start | Prevents inrush current damage to input capacitors and downstream loads during ignition-on sequencing. |
Applications
| Automotive Navigation Head Unit | ADAS Camera Power Supply |
|---|---|
|
Use Scenario: Powers display controller, touch processor, and audio codec in centralized infotainment head unit. IC Role / Device Role / Timing Role: Primary 5V PoL regulator with RESET monitoring for safe boot sequence and brownout recovery. Use Value: 25µA quiescent current extends battery life during vehicle sleep mode; 40V load-dump tolerance prevents field failures. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera module. IC Role / Device Role / Timing Role: Stable 3.3V source with fast load-transient response to handle burst pixel data transmission. Use Value: ±2% output accuracy ensures sensor ADC reference stability; 98% duty cycle maintains regulation during engine cranking. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) Subsystem |
|
Use Scenario: Provides clean 5V rail for LTE modem, GNSS receiver, and secure MCU in connected vehicle TCU. IC Role / Device Role / Timing Role: Synchronous buck converter with FPWM mode enabled via SYNC to suppress EMI near RF antennas. Use Value: Resistor-programmable 2.2MHz switching allows small 1µH inductor and low-profile layout - critical for tight TCU housing. |
Use Scenario: Powers door module microcontroller and LIN transceiver in distributed BCM architecture. IC Role / Device Role / Timing Role: Always-on 3.3V regulator with EN-controlled wake-up and RESET-driven fault reporting. Use Value: Shutdown current <10µA enables long-term parking mode; AEC-Q100 qualification ensures 15-year field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QRNXTQ1 | 4A, 3.5V–36V, 25µA IQ, but uses external MOSFETs and requires more external components; no integrated BIAS LDO. | Less suitable for space-constrained modules where board area is premium; higher BOM count increases validation burden. | Choose LM61480QRNXTQ1 only if discrete FET selection or custom gate drive timing is required. |
| TPS62933RQWR | 3A, 3V–36V, 15µA IQ, 2.2MHz fixed frequency, but lacks spread spectrum, RESET, and AEC-Q100 Grade-1 rating. | Not qualified for under-hood or safety-critical zones; limited to cabin-only applications with relaxed EMI and temperature specs. | Choose TPS62933RQWR only for non-AEC-Q100 cabin accessories where footprint and ultra-low IQ outweigh functional gaps. |
Compared with LM61480QRNXTQ1 and TPS62933RQWR, MAX20004AFOA/VY+T uniquely combines integrated power stage, AEC-Q100 Grade-1, spread-spectrum EMI reduction, and factory-trimmed 5V/3.3V outputs - making it the only drop-in solution for compact, certified automotive PoL nodes requiring zero external FETs and guaranteed reset signaling.
Availability
MAX20004AFOA/VY+T is available at Aetrix Electronics and suitable for automotive navigation head units, ADAS camera modules, telematics control units, and body control modules requiring stable component supply across extended temperature and lifecycle demands.
Supply support for MAX20004AFOA/VY+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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for automotive, industrial, and communications markets.
The MAX20004 family targets automotive power conversion with integrated FETs, AEC-Q100 qualification, and robust transient handling - specifically engineered for point-of-load regulation in infotainment, ADAS, and connectivity systems.
FAQ
What is the maximum output current capability of the MAX20004AFOA/VY+T?
The MAX20004AFOA/VY+T is rated for 4A continuous output current. This value is validated under thermal conditions using a 4-layer PCB with 27°C/W θJA and 2.2MHz switching frequency. Actual achievable current depends on ambient temperature, PCB copper area, and airflow - typical derating begins above 85°C ambient.
Does the MAX20004AFOA/VY+T support adjustable output voltage?
Yes, the MAX20004AFOA/VY+T supports adjustable output voltage from 1V to 10V using an external resistive divider connected to the FB pin. For fixed 5V or 3.3V operation, connect FB directly to the BIAS pin. The feedback regulation voltage is precisely 1.00V ±1%, enabling accurate output programming.
How does the RESET function operate on the MAX20004AFOA/VY+T?
The MAX20004AFOA/VY+T provides an open-drain RESET output that asserts low when VOUT drops below 89–93% of its nominal value and deasserts after VOUT rises above 104–110% of nominal with a 0.2ms hold time. An external pullup resistor is required to generate a logic-level reset signal for microcontrollers or PMICs.
Can the MAX20004AFOA/VY+T operate during automotive cold-crank conditions?
Yes, the MAX20004AFOA/VY+T operates down to 3.5V input and supports 98% maximum duty cycle, enabling regulation during cold-crank events where battery voltage dips to 4–6V. Its 40V load-dump tolerance and -40°C to +125°C operating range further ensure robustness in harsh automotive environments.
Is spread-spectrum switching enabled by default on the MAX20004AFOA/VY+T?
No, spread-spectrum switching is a factory-programmable option - the MAX20004AFOA/VY+T variant does not include it unless explicitly ordered with the "SS" suffix (e.g., MAX20004AFOA/VY+T-SS). When enabled, it modulates fOSC by ±3% at 4.5kHz (at 2.2MHz) to reduce conducted and radiated EMI peaks.
MAX20004AFOA/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 17-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 4A
- Frequency - Switching:
- 220kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x3.75)
MAX20004AFOA/VY+T FAQ
1.How can I place an order for MAX20004AFOA/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20004AFOA/VY+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 MAX20004AFOA/VY+T reliable?
The price and inventory of MAX20004AFOA/VY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20004AFOA/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20004AFOA/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20004AFOA/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20004AFOA/VY+T?
MAX20004AFOA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20004AFOA/VY+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 MAX20004AFOA/VY+T?
For technical support, including MAX20004AFOA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20004AFOA/VY+T requirements.
6.How does Aetrix verify that MAX20004AFOA/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20004AFOA/VY+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 MAX20004AFOA/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20004AFOA/VY+T?
All MAX20004AFOA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20004AFOA/VY+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 MAX20004AFOA/VY+T part is unused and in its original packaging.
Return procedure for MAX20004AFOA/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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