My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20004EAFOA/VY+T
- Part No.:
- MAX20004EAFOA/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20004EAFOA/VY+T.pdf
- Description:
- IC REG BUCK 5V 4A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,508
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20004EAFOA/VY+T from Maxim Integrated is a 4A, 36V automotive-grade synchronous buck converter with integrated high-side and low-side MOSFETs, internal compensation, and 15μA quiescent current in skip mode. It delivers fixed 3.3V output, operates from 3.5V–36V input, supports 400kHz/2.1MHz switching, and features 98% dropout duty cycle and AEC-Q100 qualification - ideal for automotive navigation head units requiring robust, low-IQ DC-DC conversion.
For engineers reviewing the MAX20004EAFOA/VY+T datasheet, MAX20004EAFOA/VY+T pinout, MAX20004EAFOA/VY+T application, or MAX20004EAFOA/VY+T equivalent, key selection considerations include its 3.5mm × 3.75mm 17-pin FC2QFN package, spread-spectrum enable (SSEN), RESET monitoring, FPWM/skip-mode control via SYNC, and ±2% output voltage accuracy at 3.3V.
Technical Context
This device implements current-mode control with integrated transconductance error amplifier (gm = 66μS typ) and programmable soft-start (5ms fixed). Its MAXQ power architecture maintains peak dynamic performance across worst-case thermal and load conditions without derating.
The IC supports dual operating modes: forced-PWM (FPWM) for EMI-sensitive applications and skip mode for ultra-low quiescent current (15μA typ). It includes cycle-by-cycle current limiting (ILX = 5.25–8.75A), thermal shutdown at 175°C with 15°C hysteresis, and 40V load-dump tolerance - all validated per AEC-Q100 Grade 0 (-40°C to +150°C TJ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 4A continuous - enables single-chip power supply for mid-power automotive subsystems without external current boosting. |
| Input Voltage Range | 3.5V to 36V - supports cold-crank (down to 3V after startup) and load-dump (up to 40V transient) in 12V/24V automotive systems. |
| Quiescent Current | 15μA in skip mode - extends battery runtime in always-on modules such as telematics or infotainment standby. |
| Switching Frequency | 400kHz or 2.1MHz - selectable for optimal trade-off between efficiency (lower fSW) and component size (higher fSW). |
| Output Voltage Accuracy | ±2% over line/load/temperature - ensures reliable logic-level compliance for downstream 3.3V microcontrollers and sensors. |
| Duty Cycle Max | 98% - sustains regulation during deep undervoltage transients (e.g., engine cranking) with minimal dropout. |
| Package | 3.5mm × 3.75mm 17-pin FC2QFN - compact footprint with symmetrical pinout and exposed pad for enhanced thermal dissipation in space-constrained PCBs. |
Pinout & Package
MAX20004EAFOA/VY+T uses a 3.5mm × 3.75mm, 17-pin FC2QFN package (package code F173A3FY+7) with exposed thermal pad (EP) connected to SUPSW. Pin layout is symmetrical for optimized EMI performance and includes multiple PGND/LX pins for low-inductance power routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RESET) | Open-drain reset output | Asserts low when VOUT falls below 88% of nominal; requires external pull-up for system reset signaling. |
| 2 (BST) | Bootstrap supply for high-side gate driver | Must be decoupled with 0.1μF ceramic capacitor between BST and LX to sustain HSFET gate drive in high-duty-cycle operation. |
| 3, 9 (SUPSW) | High-side switch supply input | Primary power path for internal MOSFETs; bypassed with 0.1μF + 4.7μF ceramics to PGND for stable switching. |
| 4, 5, 7, 8 (PGND) | Power ground | Four dedicated low-impedance ground connections minimize ground bounce and improve current-sense accuracy. |
| 6, 17 (LX) | Switch node | Connects directly to inductor; dual pins reduce trace inductance and thermal resistance in high-current paths. |
| 10 (SUP) | Voltage supply input | Fused directly to SUPSW; must be shorted to SUPSW externally to power internal bias LDO. |
| 11 (EN) | Enable input | Logic-compatible (VEN_HI = 2.4V); asserts device from shutdown (5μA IQ) into regulation with 5ms soft-start. |
| 12 (SYNC) | Synchronization & mode select | GND = skip mode; BIAS or external clock = FPWM; determines light-load efficiency vs. EMI profile. |
| 13 (BIAS) | Linear regulator output | 5V LDO output (4.7–5.4V); switches to VOUT post-startup in 3.3V/3.9V variants to improve efficiency. |
| 14 (GND) | Analog ground | Separate AGND reference for feedback and control circuitry to prevent noise coupling into error amplifier. |
| 15 (SSEN) | Spread-spectrum enable | Pull high to enable ±3% frequency modulation - reduces peak EMI by spreading energy across 4.5kHz bandwidth. |
| 16 (FB) | Feedback input | Connect to BIAS for factory-trimmed 3.3V output; supports adjustable outputs (1V–5V) via resistor divider. |
| EP | Exposed thermal pad | Internally tied to SUPSW; must be soldered to large copper pour for θJA = 38.8°C/W thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | Eliminates external power stage components; RDS(on) = 38mΩ (HS) / 18mΩ (LS) enables >90% efficiency at 4A. |
| Internal compensation | Removes need for external Type-II/III compensation network - simplifies design and improves transient response stability. |
| Pin-selectable spread spectrum | SSEN pin enables ±3% triangular dithering - lowers EMI peaks by up to 10dB without external filtering. |
| 98% max duty cycle with dropout recovery | Maintains regulation during 6V input-to-3.3V output operation; BST refresh cycle (150ns LSFET on every 13.5μs) prevents gate-drive collapse. |
| AEC-Q100 Grade 0 qualification | Validated for -40°C to +150°C junction operation - meets automotive reliability requirements for under-hood and infotainment applications. |
Applications
| Navigation Head Unit Power Supply | Automotive Telematics Module |
|---|---|
Use Scenario: Powers display controller, GPS baseband, and audio codec in centralized infotainment head unit with 12V battery input subject to cold-crank and load-dump transients. IC Role / Device Role / Timing Role: Primary 3.3V point-of-load regulator delivering 4A with fast load-transient response and RESET monitoring for system fault detection. Use Value: 15μA skip-mode IQ extends battery life during vehicle sleep; 98% duty cycle sustains display backlight operation during cranking. | Use Scenario: Supplies 3.3V to cellular modem, GNSS receiver, and CAN transceiver in always-connected vehicle tracking module. IC Role / Device Role / Timing Role: Standby-optimized DC-DC converter enabling <100μA system sleep current while maintaining RTC and wake-on-CAN functionality. Use Value: AEC-Q100 qualification ensures 15-year field reliability; spread-spectrum mode reduces conducted EMI to meet CISPR 25 Class 5 limits. |
| ADAS Camera Power Rail | Body Control Module (BCM) Subsystem |
Use Scenario: Provides clean, regulated 3.3V to image sensor and ISP in rear-view or surround-view camera with tight thermal constraints. IC Role / Device Role / Timing Role: Compact 3.5mm × 3.75mm buck converter with low-noise FPWM mode selected via SYNC pin for EMI-sensitive imaging path. Use Value: Internal compensation and ±2% accuracy ensure stable sensor bias; 38.8°C/W θJA enables 4A operation on 2-layer PCBs. | Use Scenario: Powers microcontroller, LIN transceiver, and LED drivers in door module or seat control unit with wide input voltage range. IC Role / Device Role / Timing Role: Robust 36V-input step-down regulator supporting 12V/24V truck and passenger vehicle platforms with single-BOM flexibility. Use Value: 40V load-dump tolerance eliminates need for upstream TVS; RESET output interfaces directly to MCU NMI pin for brownout recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQR | 4A, 3V–36V, 12μA IQ, 500kHz–2.2MHz adjustable fSW, no spread spectrum, QFN-16 | Lower quiescent current but lacks AEC-Q100 qualification and RESET output | Preferred for non-automotive industrial applications where EMI management is less critical and qualification is not required. |
| TPS54560QDGQRQ1 | 5A, 3.5V–60V, 14.5μA IQ, 100kHz–2.5MHz sync-capable, no internal compensation, SOIC-10 | Wider VIN, higher IOUT, but requires external compensation and larger footprint | Chosen when input voltage exceeds 36V or when design flexibility via external loop compensation is needed. |
Compared with LM61480RQR and TPS54560QDGQRQ1, MAX20004EAFOA/VY+T uniquely combines AEC-Q100 Grade 0, integrated spread spectrum, RESET output, and fixed 3.3V option in a 3.5mm × 3.75mm FC2QFN - making it optimal for space-constrained, safety-aware automotive POE designs where qualification and system-level monitoring are mandatory.
Availability
MAX20004EAFOA/VY+T is available at Aetrix Electronics and suitable for automotive navigation head units, telematics modules, ADAS camera power rails, and body control modules requiring stable component supply with full AEC-Q100 compliance and long-term production continuity.
Supply support for MAX20004EAFOA/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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX20004E/MAX20006E/MAX20008E product line was designed specifically for automotive power conversion - delivering high-current, wide-VIN, low-IQ buck regulation with AEC-Q100 qualification, integrated FETs, and advanced EMI mitigation features.
FAQ
What output voltage does MAX20004EAFOA/VY+T provide?
MAX20004EAFOA/VY+T provides a factory-trimmed fixed 3.3V output. This is selected by connecting the FB pin to the BIAS pin. The device achieves ±2% output voltage accuracy over temperature, line, and load conditions, ensuring stable power delivery to 3.3V logic circuits in automotive environments.
Does MAX20004EAFOA/VY+T support both FPWM and skip modes?
Yes, MAX20004EAFOA/VY+T supports both forced-PWM (FPWM) and skip modes. Mode selection is controlled by the SYNC pin: connect SYNC to GND for skip mode (15μA IQ), or to BIAS/external clock for FPWM. Unlike MAX20006EAFOD/VY+, the MAX20004EAFOA/VY+T fully supports both modes per its datasheet specifications.
What is the maximum ambient temperature for reliable operation of MAX20004EAFOA/VY+T?
MAX20004EAFOA/VY+T is rated for operation from –40°C to +125°C ambient temperature, with a maximum junction temperature of +150°C. Its AEC-Q100 Grade 0 qualification confirms reliability across this full range, supported by thermal metrics including θJA = 38.8°C/W on a four-layer board.
How is the RESET function implemented in MAX20004EAFOA/VY+T?
MAX20004EAFOA/VY+T features an open-drain RESET output that asserts low when VOUT drops below 88% of nominal (falling threshold) and deasserts after VOUT rises above 90% with a 10ms hold time. An external pull-up resistor is required to interface with MCU reset inputs or system supervisors.
Can MAX20004EAFOA/VY+T operate during automotive cold-crank conditions?
Yes, MAX20004EAFOA/VY+T supports cold-crank operation down to 3V input (after startup) and maintains regulation via 98% maximum duty cycle. Its ability to sustain 3.3V output even when input dips to ~3.4V makes it suitable for direct connection to automotive battery rails without pre-regulation.
MAX20004EAFOA/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:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x3.75)
MAX20004EAFOA/VY+T FAQ
1.How can I place an order for MAX20004EAFOA/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20004EAFOA/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 MAX20004EAFOA/VY+T reliable?
The price and inventory of MAX20004EAFOA/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 MAX20004EAFOA/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20004EAFOA/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20004EAFOA/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20004EAFOA/VY+T?
MAX20004EAFOA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20004EAFOA/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 MAX20004EAFOA/VY+T?
For technical support, including MAX20004EAFOA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20004EAFOA/VY+T requirements.
6.How does Aetrix verify that MAX20004EAFOA/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20004EAFOA/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 MAX20004EAFOA/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20004EAFOA/VY+T?
All MAX20004EAFOA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20004EAFOA/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 MAX20004EAFOA/VY+T part is unused and in its original packaging.
Return procedure for MAX20004EAFOA/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20004EAFOA/VY+T Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
