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Analog Devices Inc./Maxim Integrated MAX20006AFOB/VY+
- Part No.:
- MAX20006AFOB/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20006AFOB/VY+.pdf
- Description:
- IC REG BUCK 3.3V 6A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:252
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Product details
Overview
The MAX20006AFOB/VY+ from Maxim Integrated is a fully integrated, AEC-Q100 qualified automotive synchronous buck converter with integrated high-side and low-side MOSFETs, delivering up to 6A output current across a 3.5V–36V input range, featuring 25µA quiescent current in skip mode, ±2% output voltage accuracy, and resistor-programmable switching frequency from 220kHz to 2.2MHz. It is designed for point-of-load regulation in automotive navigation systems and radio head units.
For engineers reviewing the MAX20006AFOB/VY+ datasheet, MAX20006AFOB/VY+ pinout, MAX20006AFOB/VY+ application, or MAX20006AFOB/VY+ equivalent, key selection considerations include its 98% maximum duty cycle for cold-crank operation, spread-spectrum EMI reduction (factory enabled), RESET output with UV/OV monitoring, and FC2QFN 3.5mm × 3.75mm 17-pin package with thermal performance validated for -40°C to +125°C ambient.
Technical Context
This current-mode buck controller integrates dual MOSFETs, a 5V BIAS LDO, internal soft-start (5ms fixed), and dual operating modes: forced-PWM (FPWM) for EMI-sensitive timing-critical applications and skip mode for ultra-low-noise, high-efficiency light-load operation. Its cycle-by-cycle current limiting, thermal shutdown (175°C), and hiccup-mode short-circuit protection are fully autonomous.
The device supports factory-trimmed fixed 3.3V/5V outputs or adjustable 1V–10V via external FB divider, with VFB = 1.00V (±1%) reference. SYNC pin enables mode selection (GND = skip, BIAS/external clock = FPWM), while FOSC sets frequency with ±3% spread spectrum when enabled - disabled only during external synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A continuous - matches MAX20006 variant rating; validated for automotive PoL loads under thermal constraints |
| Input Voltage Range | 3.5V to 36V - supports full automotive battery range including cold-crank (3.5V) and load-dump (40V tolerant) |
| Quiescent Current | 25µA typical in skip mode - enables always-on systems without battery drain |
| Output Voltage Accuracy | ±2% over line/load/temperature - ensures stable MCU/SOC supply without post-regulation |
| Switching Frequency | 220kHz to 2.2MHz, resistor-programmable - allows optimization of inductor size vs. efficiency vs. EMI |
| Duty Cycle Max | 98% typical - sustains regulation during undervoltage transients down to VIN ≈ VOUT/0.98 + IOUT×RHS |
| Operating Temp | -40°C to +125°C junction - AEC-Q100 Grade 1 qualification confirmed for under-hood deployment |
Pinout & Package
MAX20006AFOB/VY+ uses a 3.5mm × 3.75mm, 17-pin FC2QFN package with exposed thermal pad (pin 14 GND). Pin 1 is OUT; pins 4,5,7,8 are PGND; pin 14 is analog GND; all ground pins must be connected to a low-impedance thermal plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Regulated output node | Delivers 6A DC; also powers internal circuitry when BIAS switches over to VOUT |
| 2 RESET | Open-drain reset signal | Asserts low when VOUT falls below 91% VSET; requires external pullup for system reset coordination |
| 3 BST | Bootstrap supply for high-side gate driver | Must connect 0.1µF ceramic capacitor between BST and LX; critical for high-side FET turn-on |
| 4,5,7,8 PGND | Power ground return | Low-inductance path for LX current; must tie directly to thermal pad and input/output capacitors |
| 6 LX | Switch node | Connects to inductor; carries full switching current (6A RMS); layout minimizes loop area for EMI control |
| 9 SUPSW | High-side switch supply | Bypassed with 0.1µF + 4.7µF ceramics; powers internal power FETs independently of logic supply |
| 10 SUP | Main IC supply input | Internally tied to SUPSW; supplies bias regulator; must be routed adjacent to SUPSW |
| 11 EN | Enable control input | Logic-compatible (0.6V/2.4V thresholds); requires VSUP > 7.5V before assertion for safe startup |
| 12 SYNC | Mode/frequency control | GND = skip mode; BIAS/external clock = FPWM; external clock must not exceed BIAS/OUT voltage |
| 13 BIAS | 5V linear regulator output | Supplies internal circuitry; switches to VOUT after startup in 5V-trimmed variants to improve efficiency |
| 14 GND | Analog ground reference | Separate from PGND; connects to feedback network and compensation components |
| 15 COMP | Error amplifier output | Connect RC network to GND for stability; sets loop bandwidth and transient response |
| 16 FB | Feedback input | 1.00V reference; connect to resistive divider for adjustable output or tie to BIAS for 3.3V/5V fixed |
| 17 FOSC | Frequency programming | Resistor to GND sets fSW; enables ±3% spread spectrum when factory-enabled |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-MOSFET power stage | Eliminates external high-side/low-side drivers and discrete FETs; reduces BOM count and layout complexity |
| 98% max duty cycle with dropout recovery | Enables regulation during automotive cold-crank events where input drops to ≤4V while maintaining VOUT |
| Factory-enabled spread-spectrum switching | Reduces peak EMI by ±3% frequency modulation at 4.5kHz (at 2.2MHz), easing CISPR 25 Class 5 compliance |
| RESET with UV/OV monitoring | Provides system-level fault signaling: asserts on 91% VSET UV threshold and releases after 0.2ms hold time |
| Thermal shutdown with hysteresis | Shuts down at 175°C junction; auto-restarts after 15°C cooldown - prevents latch-up during sustained overload |
| Two-mode operation (FPWM/skip) | FPWM ensures constant frequency for EMI filtering; skip mode cuts gate loss at light load, improving no-load efficiency |
Applications
| Automotive Navigation Systems | Radio Head Units |
|---|---|
Use Scenario: Powering SoC, display interface, and audio DSP in infotainment head units subjected to 12V battery transients. IC Role / Device Role / Timing Role: Primary 5V/3.3V PoL regulator with RESET supervision for system brown-out detection and controlled reboot. Use Value: 98% duty cycle maintains regulation during cold-crank; 25µA quiescent current prevents battery drain in sleep mode. |
Use Scenario: Supplying FPGA configuration, RF front-end, and touchscreen controller in AM/FM/DAB radio modules. IC Role / Device Role / Timing Role: Synchronous buck converter with programmable frequency to avoid AM band interference (220kHz–2.2MHz). Use Value: Spread-spectrum mode reduces radiated emissions; AEC-Q100 qualification ensures reliability across temperature extremes. |
| Distributed Automotive DC Power | ADAS Camera Power Modules |
Use Scenario: Local 5V rail generation near camera ECU, radar sensor, or domain controller to minimize IR drop and noise coupling. IC Role / Device Role / Timing Role: Compact, thermally efficient step-down converter placed close to load; uses FC2QFN package for minimal PCB footprint. Use Value: 3.5mm × 3.75mm footprint saves space; 6A capability supports multi-rail SoC loads without parallel converters. |
Use Scenario: Providing clean, regulated 3.3V for image sensor and ISP in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Fixed 3.3V output variant with ±2% accuracy and fast load-transient response for pixel clock stability. Use Value: Good load-transient performance minimizes VOUT droop during frame capture bursts; RESET output triggers sensor reinitialization on fault. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61460-Q1 | 4.5V–36V input, 6A, 2.1MHz max, no integrated spread spectrum, higher 40µA IQ in LP mode | Lacks factory spread-spectrum EMI reduction; requires external circuitry for similar EMI suppression | Select when lower cost and TI ecosystem support outweigh need for built-in spread spectrum |
| TPS62933-Q1 | 3V–36V input, 3.5A, 1.8–4MHz, 15µA IQ, no BIAS switchover, smaller 2.5mm × 3mm QFN | Lower current rating; lacks BIAS-to-VOUT switchover and 98% dropout capability | Select for space-constrained, lower-current applications where cold-crank margin is less critical |
Compared with LM61460-Q1 and TPS62933-Q1, the MAX20006AFOB/VY+ provides superior cold-crank resilience (98% duty cycle), integrated EMI mitigation (±3% spread spectrum), and optimized efficiency architecture (BIAS switchover), making it preferred for high-reliability automotive PoL where input transients and emission limits are stringent.
Availability
MAX20006AFOB/VY+ is available at Aetrix Electronics and suitable for automotive navigation systems, radio head units, distributed DC power architectures, and ADAS camera modules requiring stable component supply across extended temperature and voltage transients.
Supply support for MAX20006AFOB/VY+ 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 MAX20006 belongs to the MAX2000x family of AEC-Q100 qualified automotive buck converters engineered specifically for robust, compact, low-quiescent-power DC-DC conversion in harsh vehicle environments.
FAQ
What is the maximum output current capability of the MAX20006AFOB/VY+?
The MAX20006AFOB/VY+ is rated for 6A continuous output current under specified thermal conditions. This rating assumes proper PCB layout with adequate copper area, four-layer board construction, and ambient temperature ≤70°C. Derating applies above 70°C at 29.4mW/°C, and actual achievable current depends on input voltage, output voltage, switching frequency, and heatsinking. The device implements cycle-by-cycle current limiting with an LX current limit threshold of 7.5A (min) to 12.5A (max).
Does the MAX20006AFOB/VY+ support fixed-output voltage configurations?
Yes, the MAX20006AFOB/VY+ supports factory-trimmed fixed 3.3V and 5.0V output options. To select either, connect the FB pin directly to the BIAS pin. For adjustable outputs between 1V and 10V, use an external resistive divider from OUT to FB with RFB2 ≤ 100kΩ and VFB = 1.00V ±1%. The MAX20006AFOB/VY+ variant is specifically configured for 6A operation and retains full accuracy and transient performance in both fixed and adjustable modes.
How does the RESET output function on the MAX20006AFOB/VY+?
The RESET output on the MAX20006AFOB/VY+ is an open-drain, active-low signal that asserts when VOUT falls below 91% of its nominal value (UV threshold) and deasserts after VOUT rises above 107% (OV rising threshold) with a 0.2ms hold time. It requires an external pullup resistor to a logic-compatible voltage (≤6.0V). This signal is used for system-level power-good monitoring and controlled processor reset in automotive ECUs, ensuring reliable boot sequencing and fault recovery.
Can the MAX20006AFOB/VY+ operate during automotive cold-crank conditions?
Yes, the MAX20006AFOB/VY+ is explicitly designed for cold-crank operation with a 3.5V minimum input voltage and 98% maximum duty cycle. During cold-crank events where battery voltage dips to ~3.5V, the device maintains regulation by extending on-time - provided VIN ≥ VOUT/0.98 + IOUT×RHS. Its 40V load-dump tolerance and AEC-Q100 Grade 1 qualification (-40°C to +125°C) further ensure robustness across full automotive environmental stress profiles.
Is spread-spectrum switching enabled by default on the MAX20006AFOB/VY+?
Yes, the MAX20006AFOB/VY+ is factory-programmed with spread-spectrum switching enabled, modulating the switching frequency by ±3% around the FOSC-set center frequency with a 4.5kHz triangular waveform (at 2.2MHz). This feature is active in both FPWM and skip modes but is automatically disabled when the device is synchronized to an external clock via the SYNC pin. No external components or configuration are required to activate this EMI-reduction capability.
MAX20006AFOB/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 17-PowerWFQFN
- Packaging:
- Tray
- 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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 6A
- 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)
MAX20006AFOB/VY+ FAQ
1.How can I place an order for MAX20006AFOB/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20006AFOB/VY+ 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 MAX20006AFOB/VY+ reliable?
The price and inventory of MAX20006AFOB/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20006AFOB/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20006AFOB/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20006AFOB/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20006AFOB/VY+?
MAX20006AFOB/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20006AFOB/VY+ 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 MAX20006AFOB/VY+?
For technical support, including MAX20006AFOB/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20006AFOB/VY+ requirements.
6.How does Aetrix verify that MAX20006AFOB/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20006AFOB/VY+ 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 MAX20006AFOB/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20006AFOB/VY+?
All MAX20006AFOB/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20006AFOB/VY+, 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 MAX20006AFOB/VY+ part is unused and in its original packaging.
Return procedure for MAX20006AFOB/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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