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Analog Devices Inc./Maxim Integrated MAX20002DATPB/VY+
- Part No.:
- MAX20002DATPB/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX20002DATPB/VY+.pdf
- Description:
- IC REG 36V 220KHZ-2.2MHZ 2A/3A
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Inventory:3,327
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Product details
Overview
MAX20002DATPB/VY+ from Maxim Integrated is a 2A synchronous buck converter with integrated high-side and low-side MOSFETs, operating from 3.5V to 36V input and delivering fixed 5V/3.3V or adjustable 1V–10V output. It features 15µA quiescent current in skip mode, 220kHz–2.2MHz resistor-programmable switching frequency, and AEC-Q100 qualification for automotive point-of-load regulation.
For engineers reviewing the MAX20002DATPB/VY+ datasheet, MAX20002DATPB/VY+ pinout, MAX20002DATPB/VY+ application, or MAX20002DATPB/VY+ equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, automotive-grade protection features, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The MAX20002DATPB/VY+ implements current-mode control with internal transconductance error amplifier (700µS), fixed 8ms soft-start, and cycle-by-cycle current limiting. Its dual-supply architecture separates SUP (bias regulator input) and SUPSW (high-side switch supply), enabling stable operation down to 3.5V during cold-crank events.
It supports forced PWM or skip mode via FSYNC pin logic, with spread-spectrum modulation (±3% around FOSC) enabled by SPS pin. Overvoltage protection triggers at 107% VFB (1.07V), and thermal shutdown activates at 175°C with 15°C hysteresis - both critical for automotive transient resilience.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports automotive infotainment modules and ADAS sensors without external current boosting. |
| Input Voltage Range | 3.5V to 36V - covers full automotive battery range including cold-crank (down to 3.5V) and load-dump (up to 42V). |
| Quiescent Current | 15µA in skip mode - enables always-on systems (e.g., CAN wake-up circuits) with minimal battery drain. |
| Switching Frequency | 220kHz to 2.2MHz (resistor-programmable) - allows trade-off between inductor size (higher fSW → smaller L) and efficiency (lower fSW → lower switching loss). |
| Output Accuracy | ±2% for fixed 5V/3.3V outputs - ensures reliable power delivery to microcontrollers and interface ICs without external calibration. |
| Protection Features | 42V load-dump tolerance, 99% max duty cycle, OVP at 107% VFB, thermal shutdown at 175°C - meets ISO 7637-2 pulse 5a/b requirements. |
| Operating Temperature | −40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood and cabin-mounted ECUs. |
Pinout & Package
MAX20002DATPB/VY+ is housed in a 20-pin 5mm × 5mm TQFN package with exposed pad (EP), outline number 21-0140, land pattern 90-0009. Thermal resistance θJA = 30°C/W on four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FOSC | Frequency-setting input | Connect resistor to AGND to set fSW; 12kΩ yields 2.2MHz - directly controls inductor size and EMI profile. |
| 3 FB | Feedback input | Connect to BIAS for fixed 5V/3.3V; use resistive divider for 1V–10V adjustment - sets regulation reference with ±1% FB accuracy. |
| 7 EN | Enable input | High-voltage compatible (3.5V–36V); 2.4V threshold - allows direct connection to KL30 or CAN transceiver INH pin. |
| 11 PGOOD | Open-drain power-good output | Asserts when VOUT > 95% VFB; deasserts at 92.5% - enables safe sequencing with downstream MCUs or FPGAs. |
| 12 SPS | Spread-spectrum control | Pull high to enable ±3% frequency dithering - reduces peak EMI by spreading energy across spectrum. |
| 15 BST | Bootstrap supply | Connect 0.1µF capacitor between BST and LX - provides gate drive voltage for high-side MOSFET. |
| 16–18 LX | Switching node | Three parallel pins reduce inductance and thermal resistance - handles 2A peak current with minimized ringing. |
| 20 FSYNC | Synchronization input | Connect to AGND for skip mode; to BIAS or external clock for forced-PWM - selects operating mode and enables multi-rail synchronization. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers - reduces BOM count and layout area in space-constrained automotive modules. |
| 15µA quiescent current in skip mode | Enables >1-year battery life in always-on telematics units powered from vehicle battery without parasitic drain concerns. |
| Programmable 1V–10V output or fixed 5V/3.3V | Supports diverse rail requirements: 3.3V for MCU I/O, 5V for USB peripherals, 1.2V for DDR termination (via external divider). |
| 42V load-dump protection and −40°C to +125°C operation | Meets OEM requirements for front-end power supplies in head units, body controllers, and ADAS camera modules. |
| PGOOD with 25µs debounce and ±2% output accuracy | Provides deterministic power sequencing signal for SoC reset management - avoids false resets during transient recovery. |
Applications
| Automotive Infotainment Head Unit | ADAS Camera Power Supply |
|---|---|
|
Use Scenario: Powers SoC, display interface, and audio codec in 12V automotive head unit with cold-crank and load-dump transients. IC Role / Device Role / Timing Role: Primary 5V/3.3V point-of-load regulator with PGOOD-driven reset sequencing and spread-spectrum EMI reduction. Use Value: Maintains regulation during 3.5V cold-crank (99% duty cycle) and survives 42V load-dump without external TVS - eliminates need for discrete protection circuitry. |
Use Scenario: Supplies 3.3V to image sensor and 1.8V to ISP in rear-view or surround-view camera module. IC Role / Device Role / Timing Role: Dual-rail capable buck converter (via FB divider) with ultra-low IQ for parking-mode vision systems. Use Value: 15µA skip-mode current extends battery runtime during vehicle-off monitoring; AEC-Q100 Grade 1 ensures reliability at +105°C ambient near engine bay. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Regulates 5V for CAN transceivers, LIN interface, and microcontroller in centralized BCM. IC Role / Device Role / Timing Role: High-voltage input buck with EN pin tied to KL30 - enables immediate wake-up on ignition and controlled shutdown on key-off. Use Value: 2.4V EN threshold and 3.5V–36V input range allow direct KL30 connection; PGOOD confirms stable 5V before enabling CAN bus. |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in always-connected TCU with cellular backup. IC Role / Device Role / Timing Role: Low-IQ buck converter with spread-spectrum and sync capability - coexists with RF sections without spectral interference. Use Value: ±3% spread-spectrum reduces 2.2MHz fundamental peak by >10dB; FSYNC pin enables synchronization to baseband clock to avoid beat frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20003DATPB/VY+ | 3A output current, identical pinout and feature set - higher current capability with same footprint and control logic. | Required where peak load exceeds 2A (e.g., multi-camera TCU, high-brightness display backlight drivers). | Select MAX20003DATPB/VY+ only if sustained load >1.8A; otherwise MAX20002DATPB/VY+ offers better light-load efficiency and lower cost. |
| LM61480RQR | 3.5V–36V input, 8A output, 1.5MHz fixed frequency - no spread-spectrum, no FSYNC sync, higher IQ (26µA). | Suitable for non-automotive industrial PoL where AEC-Q100 not required and higher current is needed. | Choose LM61480RQR only for cost-sensitive, non-automotive designs requiring >2A; MAX20002DATPB/VY+ remains preferred for AEC-Q100 compliance and EMI-sensitive layouts. |
Compared with MAX20003DATPB/VY+, the MAX20002DATPB/VY+ delivers optimal efficiency below 1.5A while maintaining identical automotive robustness; versus LM61480RQR, it provides certified automotive qualification, lower quiescent current, and integrated EMI mitigation - critical for safety-critical and always-on vehicle networks.
Availability
MAX20002DATPB/VY+ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control units requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX20002DATPB/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 MAX20002/MAX20003 product line targets automotive power conversion with integrated FETs, ultra-low IQ, and AEC-Q100 qualification - specifically engineered for resilient, compact DC-DC regulation in harsh vehicle environments.
FAQ
What is the maximum duty cycle supported by the MAX20002DATPB/VY+?
The MAX20002DATPB/VY+ supports up to 99% duty cycle operation, enabling regulation during severe undervoltage conditions like automotive cold-crank (down to 3.5V input). This is achieved by forcing the low-side FET on for 150ns every 12µs once off-time drops below 100ns - a behavior confirmed in the Electrical Characteristics table and Detailed Description section of the datasheet.
Does the MAX20002DATPB/VY+ require an external bootstrap capacitor?
Yes, the MAX20002DATPB/VY+ requires a 0.1µF ceramic capacitor between BST and LX pins. This bootstrap capacitor supplies the gate drive voltage for the integrated high-side MOSFET. The datasheet specifies this value in the Typical Application Circuit and Pin Description sections, and omitting it will prevent proper high-side switching and cause output failure.
Can the MAX20002DATPB/VY+ be synchronized to an external clock?
Yes, the MAX20002DATPB/VY+ can be synchronized to an external clock via the FSYNC pin. When driven with a logic-level signal within ±20% of the internal oscillator frequency (e.g., 1.76MHz–2.64MHz for nominal 2.2MHz), the device locks to the external source in two cycles. The datasheet confirms this in the Synchronization Input section and Figure 1 block diagram.
What is the purpose of the SPS pin on the MAX20002DATPB/VY+?
The SPS pin on the MAX20002DATPB/VY+ enables or disables spread-spectrum frequency modulation. Pulling SPS high activates ±3% triangular dithering centered on the programmed FOSC frequency - reducing peak EMI emissions. The modulation period scales inversely with FOSC (e.g., 110µs at 2.2MHz, 550µs at 400kHz), as detailed in the Spread-Spectrum Option section.
Is the MAX20002DATPB/VY+ AEC-Q100 qualified?
Yes, the MAX20002DATPB/VY+ is AEC-Q100 qualified per Grade 1 (−40°C to +125°C ambient), as explicitly stated in the Benefits and Features section and confirmed in the Absolute Maximum Ratings table. This qualification covers thermal shutdown, load-dump immunity, and operating temperature range - essential for automotive under-hood and cabin applications.
MAX20002DATPB/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Strip
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
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- Voltage - Input (Max):
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- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
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- Qualification:
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- Mounting Type:
- -
- Supplier Device Package:
- -
MAX20002DATPB/VY+ FAQ
1.How can I place an order for MAX20002DATPB/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20002DATPB/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 MAX20002DATPB/VY+ reliable?
The price and inventory of MAX20002DATPB/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20002DATPB/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20002DATPB/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20002DATPB/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20002DATPB/VY+?
MAX20002DATPB/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20002DATPB/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 MAX20002DATPB/VY+?
For technical support, including MAX20002DATPB/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20002DATPB/VY+ requirements.
6.How does Aetrix verify that MAX20002DATPB/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20002DATPB/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 MAX20002DATPB/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20002DATPB/VY+?
All MAX20002DATPB/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20002DATPB/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 MAX20002DATPB/VY+ part is unused and in its original packaging.
Return procedure for MAX20002DATPB/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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