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Analog Devices Inc./Maxim Integrated MAX20002DATPB/VY+T
- Part No.:
- MAX20002DATPB/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX20002DATPB/VY+T.pdf
- Description:
- IC REG 36V 220KHZ-2.2MHZ 2A/3A
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Product details
Overview
MAX20002DATPB/VY+T from Maxim Integrated is a 2A synchronous buck converter with integrated high-side and low-side MOSFETs, operating from 3.5V to 36V input, delivering fixed 5V/3.3V or adjustable 1V–10V output, featuring 15µA quiescent current in skip mode and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX20002DATPB/VY+T datasheet, MAX20002DATPB/VY+T pinout, MAX20002DATPB/VY+T application, or MAX20002DATPB/VY+T equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and protection specs, and real-world design implications for cold-crank, load-dump, and EMI-sensitive systems.
Technical Context
The MAX20002DATPB/VY+T implements current-mode control with internal transconductance error amplifier (700µS), programmable oscillator (220kHz–2.2MHz via FOSC resistor), and dual-mode operation: forced PWM for EMI control or skip mode for ultra-low IQ. It integrates a 5V BIAS LDO (4.7–5.4V) and monitors output regulation via FB pin with ±1% accuracy for adjustable outputs or ±2% for fixed 5V/3.3V.
Its architecture supports 99% maximum duty cycle for dropout operation during undervoltage transients (e.g., cold crank), includes cycle-by-cycle current limiting (3.33A typ), thermal shutdown at 175°C with 15°C hysteresis, and open-drain PGOOD with 95%/92.5% VFB thresholds - all validated across –40°C to +125°C ambient per AEC-Q100 Grade 0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports automotive infotainment and ADAS subsystems without external current boosting. |
| Input Voltage Range | 3.5V to 36V - covers full automotive battery range including cold crank (down to 3.5V) and 42V load-dump survival. |
| Quiescent Current | 15µA in skip mode - enables always-on functionality in vehicle body control modules with minimal battery drain. |
| Switching Frequency | 220kHz to 2.2MHz (resistor-programmable) - allows optimization between inductor size (higher fSW → smaller L) and efficiency (lower fSW → lower switching loss). |
| Output Accuracy | ±2% for fixed 5V/3.3V; ±1% FB reference (0.99–1.01V) for adjustable 1V–10V - ensures stable MCU core voltage and sensor biasing under line/load variation. |
| Protection Features | 42V load-dump tolerance, cycle-by-cycle current limit, thermal shutdown (175°C), overvoltage protection (107% VOUT), and PGOOD monitoring - eliminates need for external supervision ICs in ASIL-B designs. |
| Operating Temperature | –40°C to +125°C ambient - qualified per AEC-Q100 Grade 0, enabling placement near engine compartments or under-hood ECUs. |
Pinout & Package
MAX20002DATPB/VY+T is housed in a 5mm × 5mm, 20-pin TQFN package with exposed pad (Package Code: T2055+4C; Outline No.: 21-0140), optimized for thermal dissipation (θJA = 30°C/W on 4-layer board) and automotive PCB layout constraints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FOSC | Frequency-setting input | Resistor-to-ground sets switching frequency (220kHz–2.2MHz); determines inductor sizing and EMI profile. |
| OUT | Power output node | Delivers regulated DC output; powers internal circuitry when VOUT ≥ 3V in skip mode after BIAS switchover. |
| FB | Feedback sensing input | Connects to resistive divider for 1V–10V adjustment or to BIAS for fixed 5V/3.3V; ±1% reference enables precision regulation. |
| COMP | Error amplifier output | External RC compensation network stabilizes current-mode loop; critical for transient response and phase margin. |
| BIAS | Internal LDO output | 5V ±0.3V regulated supply for internal logic; requires ≥2.2µF ceramic bypass to AGND for noise immunity. |
| EN | High-voltage enable input | Logic-compatible with 3.5V–36V; directly connectable to KL30 or CAN transceiver INH pin for system-level sequencing. |
| SUP / SUPSW | Dual supply inputs | SUP powers bias regulator; SUPSW powers high-side switch - independent routing prevents coupling during transients. |
| PGOOD | Open-drain status output | Asserts high when VOUT > 95% of target; deasserts at 92.5%; used for power-rail sequencing and fault reporting. |
| SPS | Spread-spectrum control | Pull-high enables ±3% frequency modulation (triangular, 110µs period at 2.2MHz) to reduce peak EMI emissions. |
| LX (pins 16–18) | Switching node | Connects to inductor; carries high di/dt current - requires tight layout and Kelvin connection to minimize ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers - reduces BOM count by ≥6 components and PCB area by >40% vs discrete solutions. |
| 99% max duty cycle operation | Enables stable 5V output even during 4.5V cold-crank events without dropout - critical for infotainment head units. |
| 15µA skip-mode IQ | Extends battery life in always-on telematics modules beyond 10 years in sleep state (assuming 10µA system leakage). |
| AEC-Q100 Grade 0 qualification | Validated for –40°C to +125°C operation with 42V load-dump immunity - meets OEM requirements for under-hood placement. |
| Programmable spread spectrum | Reduces EMI peak amplitude by up to 10dB at fundamental frequency - simplifies EMC certification for automotive Tier-1 suppliers. |
Applications
| Automotive Infotainment Power Rail | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC, display driver, and audio codec in navigation/radio head units requiring clean, sequenced 5V/3.3V rails. IC Role / Device Role / Timing Role: Primary step-down regulator delivering 2A at 5V with PGOOD-driven sequencing and cold-crank resilience. Use Value: Maintains operation down to 3.5V input and recovers within 8ms soft-start - avoids system reset during engine start. |
Use Scenario: Supplies image sensor and ISP in forward-facing camera modules where EMI must not interfere with pixel data. IC Role / Device Role / Timing Role: Low-noise, spread-spectrum-enabled buck converter providing 3.3V at 1.2A with <10mVpp ripple. Use Value: ±3% frequency dithering lowers radiated emissions below CISPR-25 Class 5 limits without added shielding. |
| Body Control Module (BCM) Core Supply | Telematics Control Unit (TCU) Always-On Rail |
|
Use Scenario: Generates 3.3V for microcontroller, CAN transceivers, and LIN interface in door module or lighting ECU. IC Role / Device Role / Timing Role: High-efficiency, low-IQ buck converter supporting wake-on-LIN/CAN with fast EN response (<10µs). Use Value: 15µA skip-mode IQ enables >15-year battery hold-up time in parked vehicle scenarios per ISO 16750-2. |
Use Scenario: Provides always-on 3.3V rail for GNSS receiver, cellular modem, and secure boot logic in connected vehicle gateways. IC Role / Device Role / Timing Role: Automotive-qualified buck with 42V load-dump protection and thermal shutdown for unattended operation. Use Value: Survives 42V/1s load-dump pulses without latch-up or parameter shift - eliminates need for external TVS clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20003DATPB/VY+T | 3A output capability, identical pinout and feature set - higher current headroom but larger thermal footprint at full load. | Better suited for multi-rail systems powering both MCU and peripheral ICs simultaneously. | Select MAX20003DATPB/VY+T only if peak load exceeds 1.8A sustained; otherwise MAX20002DATPB/VY+T offers optimal cost/thermal balance. |
| LM61480RQWR | 3.5V–36V input, 3A, 14µA IQ, but lacks AEC-Q100 qualification and 42V load-dump rating - rated for industrial temp only. | Acceptable for non-safety-critical cabin modules (e.g., ambient lighting) but not for powertrain or ADAS domains. | Use LM61480RQWR only in non-automotive or non-AEC environments; MAX20002DATPB/VY+T remains mandatory for OEM-compliant designs. |
Compared with MAX20003DATPB/VY+T and LM61480RQWR, MAX20002DATPB/VY+T uniquely combines AEC-Q100 Grade 0, 42V load-dump immunity, and 15µA skip-mode IQ in a 2A solution - making it the only choice for cost-sensitive, thermally constrained automotive subsystems requiring full qualification.
Availability
MAX20002DATPB/VY+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, body control units, and telematics control units requiring stable component supply with long-term lifecycle assurance.
Supply support for MAX20002DATPB/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 high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets, emphasizing reliability, integration, and qualification rigor.
MAX20002DATPB/VY+T belongs to the MAX2000x automotive power management family, engineered specifically for demanding 12V/24V vehicle systems requiring AEC-Q100 compliance, cold-crank resilience, and ultra-low quiescent current.
FAQ
What is the maximum duty cycle supported by MAX20002DATPB/VY+T, and how does it affect cold-crank performance?
MAX20002DATPB/VY+T supports up to 99% duty cycle, enabling stable 5V output even when input drops to 3.5V during cold-crank events. This eliminates dropout and maintains power to critical microcontrollers without requiring external boost stages. The device achieves this by forcing the low-side FET on for 150ns every 12µs once off-time falls below 100ns - a behavior validated across –40°C to +125°C.
Does MAX20002DATPB/VY+T require external compensation components, and what is their role?
Yes, MAX20002DATPB/VY+T requires an external RC network from COMP to AGND to stabilize its current-mode control loop. The COMP pin exposes the error amplifier output, allowing designers to tailor phase margin and transient response. Typical networks use 1–10kΩ resistor and 100–1000pF capacitor; values depend on selected inductor and output capacitor per the compensation guidelines in the datasheet.
How does the spread-spectrum function work on MAX20002DATPB/VY+T, and when should it be enabled?
When SPS pin is pulled high, MAX20002DATPB/VY+T modulates switching frequency ±3% around the FOSC-set center (e.g., 2.2MHz ±66kHz) using a triangular waveform with 110µs period. This spreads EMI energy across a band, reducing peak emissions. Enable it for automotive modules targeting CISPR-25 Class 5 compliance - but disable when synchronized to external clock, as internal spread spectrum is automatically disabled.
What protection features are integrated into MAX20002DATPB/VY+T, and are they production-tested?
MAX20002DATPB/VY+T integrates cycle-by-cycle current limit (3.33A typ), thermal shutdown (175°C), overvoltage protection (107% VOUT), 42V load-dump tolerance, and PGOOD monitoring - all production-tested per AEC-Q100 stress conditions. The OVP and thermal shutdown include hysteresis (15°C) to prevent chatter, and PGOOD thresholds (95%/92.5%) are guaranteed across temperature and line/load.
Can MAX20002DATPB/VY+T be used with a fixed 5V output without external resistors, and what is the accuracy?
Yes - connect FB directly to BIAS to configure MAX20002DATPB/VY+T for fixed 5V output. Output accuracy is ±2% over –40°C to +125°C, with typical deviation <±1.5% at +25°C. This eliminates feedback resistor network, saving space and cost while maintaining sufficient tolerance for most automotive MCU and peripheral supplies.
MAX20002DATPB/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX20002DATPB/VY+T FAQ
1.How can I place an order for MAX20002DATPB/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20002DATPB/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 MAX20002DATPB/VY+T reliable?
The price and inventory of MAX20002DATPB/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 MAX20002DATPB/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20002DATPB/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20002DATPB/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20002DATPB/VY+T?
MAX20002DATPB/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20002DATPB/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 MAX20002DATPB/VY+T?
For technical support, including MAX20002DATPB/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20002DATPB/VY+T requirements.
6.How does Aetrix verify that MAX20002DATPB/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20002DATPB/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 MAX20002DATPB/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20002DATPB/VY+T?
All MAX20002DATPB/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20002DATPB/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 MAX20002DATPB/VY+T part is unused and in its original packaging.
Return procedure for MAX20002DATPB/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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