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Analog Devices Inc./Maxim Integrated MAX20002EATPB/VY+T
- Part No.:
- MAX20002EATPB/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX20002EATPB/VY+T.pdf
- Description:
- IC REG BUCK PROG/1V 2A 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,471
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Product details
Overview
MAX20002EATPB/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 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 MAX20002EATPB/VY+T datasheet, MAX20002EATPB/VY+T pinout, MAX20002EATPB/VY+T application, or MAX20002EATPB/VY+T equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade protection features (42V load-dump, -40°C to +125°C), and real-world design implications of its 99% duty-cycle dropout operation and spread-spectrum EMI control.
Technical Context
The MAX20002EATPB/VY+T 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 during cold-crank transients down to 3.5V.
It supports two operational modes via FSYNC: forced PWM (fixed-frequency, low-noise) and skip mode (ultra-low 15µA IQ). Spread spectrum (±3% frequency modulation, 110µs period at 2.2MHz) is enabled by SPS pin and disabled during external synchronization.
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 - accommodates 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., telematics, CAN gateways) 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 calibration. |
| Thermal Protection | 175°C shutdown with 15°C hysteresis - prevents thermal runaway in enclosed automotive enclosures with limited airflow. |
| PGOOD Threshold | 95% VOUT rising / 92.5% VOUT falling - provides precise, noise-immune power sequencing for multi-rail systems. |
Pinout & Package
MAX20002EATPB/VY+T uses a 20-pin 5mm × 5mm TQFN package with exposed pad (EP), optimized for thermal dissipation in automotive under-hood environments. θJA = 30°C/W on four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FOSC | Frequency-setting input | Resistor-to-AGND sets switching frequency; 12kΩ yields 2.2MHz - critical for EMI compliance and inductor selection. |
| OUT | Power output node | Delivers regulated voltage; also powers internal circuitry when VOUT ≥ 3V in skip mode - eliminates need for separate bias rail. |
| FB | Feedback input | Connects to resistive divider (1V reference) for adjustable outputs or to BIAS for fixed 5V/3.3V - enables flexible system-level voltage scaling. |
| COMP | Error amplifier output | External RC compensation network stabilizes control loop - required for robust transient response across temperature and load. |
| BIAS | Internal 5V linear regulator output | Powers internal analog blocks; requires ≥2.2µF ceramic bypass - decouples noise-sensitive circuitry from switching node. |
| EN | High-voltage enable input | Logic-compatible with 3.5V–36V - allows direct connection to KL30 or CAN transceiver INH pin for centralized power management. |
| PGOOD | Open-drain power-good signal | Asserts above 95% VOUT - used for sequenced startup of downstream processors and memory. |
| SPS | Spread-spectrum control | High = ±3% frequency modulation active - reduces peak EMI by spreading energy across bandwidth; disabled during FSYNC sync. |
| LX (pins 16–18) | Switching node | Drives external inductor; three parallel pins reduce trace inductance and improve thermal performance - essential for 2A continuous operation. |
| PGND (pins 13–14) | Power ground | Dedicated low-impedance return path for high di/dt currents - must be separated from AGND and connected to EP for optimal EMC. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers - reduces BOM count, PCB area, and layout complexity in space-constrained automotive modules. |
| 99% maximum duty cycle | Enables regulation during severe undervoltage events (e.g., engine cranking at 4.5V) without output collapse - critical for safety-critical ECUs. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation - meets automotive reliability requirements without derating for under-hood deployment. |
| 42V load-dump protection | Withstands ISO 7637-2 Pulse 5a without external TVS - simplifies front-end protection design and improves system robustness. |
| Programmable spread spectrum | Reduces conducted EMI peaks by >10dB - helps pass CISPR 25 Class 5 without adding ferrite beads or shielding cans. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powering 3.3V/5V rails for display controllers, audio codecs, and USB PHYs in head units and digital clusters. IC Role / Device Role / Timing Role: Primary DC-DC regulator providing clean, sequenced, and monitored power with PGOOD handshake. Use Value: 15µA IQ extends battery life in accessory-off mode; 99% duty cycle maintains display backlight during cranking. |
Use Scenario: Generating stable 3.3V for CMOS image sensors and ISP processors in surround-view and forward-facing cameras. IC Role / Device Role / Timing Role: Point-of-load converter with fast transient response and low output ripple (<15mVP-P) for noise-sensitive analog front-ends. Use Value: ±2% output accuracy ensures sensor ADC reference stability; AEC-Q100 qualification guarantees field reliability. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) Subsystem |
|
Use Scenario: Supplying 5V to LTE/C-V2X modems and GNSS receivers requiring always-on connectivity and low standby power. IC Role / Device Role / Timing Role: Always-on buck regulator with EN-controlled wake-up and PGOOD-monitored brown-out detection. Use Value: 5µA shutdown current minimizes parasitic drain; 42V load-dump tolerance eliminates need for upstream TVS diode. |
Use Scenario: Powering microcontrollers, LIN transceivers, and LED drivers in door modules and lighting control nodes. IC Role / Device Role / Timing Role: Compact, thermally efficient step-down converter supporting multiple 3.3V/5V loads from 12V battery rail. Use Value: 20-pin TQFN with EP enables high-power density; spread spectrum eases EMC certification for distributed body electronics. |
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 | 3.5V–36V input, 4A output, 14µA IQ, but no integrated spread spectrum or AEC-Q100 qualification. | Targeted at industrial/telecom; lacks automotive-specific protections (load dump, cold crank margin) and qualification. | Choose LM61480RQR only if higher current and non-automotive environment justify trade-offs in qualification and EMI features. |
| TPS62810QWRVRQ1 | 2.7V–6V input, 1A output, AEC-Q100 qualified, but insufficient VIN range and current for 12V automotive main rail. | Designed for post-regulation in low-voltage domains (e.g., domain controllers); cannot replace MAX20002EATPB/VY+T in primary 12V conversion. | Select TPS62810QWRVRQ1 only for secondary 3.3V/5V rails where input is already pre-regulated to ≤6V. |
Compared with LM61480RQR and TPS62810QWRVRQ1, MAX20002EATPB/VY+T uniquely combines AEC-Q100 Grade 1, 42V load-dump tolerance, programmable spread spectrum, and 2A capability within the full 3.5V–36V automotive input range - making it the only drop-in solution for primary buck conversion in harsh automotive environments.
Availability
MAX20002EATPB/VY+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MAX20002EATPB/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 demanding industrial, communications, and automotive applications.
The MAX20002/MAX20003 product line targets automotive power conversion with emphasis on wide-input operation, ultra-low IQ, and integrated EMC features - specifically engineered for infotainment, ADAS, and body electronics subsystems.
FAQ
What is the maximum duty cycle supported by the MAX20002EATPB/VY+T?
The MAX20002EATPB/VY+T supports up to 99% maximum duty cycle, enabling regulation during severe undervoltage conditions such as 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 - ensuring continuous output without dropout in safety-critical applications.
Does the MAX20002EATPB/VY+T require an external clock for spread-spectrum operation?
No, the MAX20002EATPB/VY+T generates its own spread-spectrum modulation internally when the SPS pin is pulled high. The modulation is a triangular wave centered on the FOSC-set frequency with ±3% deviation and a 110µs period at 2.2MHz. External clock synchronization via FSYNC disables internal spread spectrum but passes any modulation present on the driving clock source.
Can the MAX20002EATPB/VY+T operate with a 3.3V fixed output and still deliver 2A continuously?
Yes, the MAX20002EATPB/VY+T delivers 2A continuously at 3.3V output under typical conditions (e.g., 14V input, 2.2MHz switching, 2.2µH inductor). Its 60mΩ high-side and 35mΩ low-side MOSFETs ensure low conduction losses, and thermal design with the exposed pad supports full-load operation across -40°C to +125°C ambient per AEC-Q100 Grade 1.
How does the MAX20002EATPB/VY+T handle overvoltage protection?
The MAX20002EATPB/VY+T monitors the FB pin and triggers overvoltage protection (OVP) when VOUT rises to 107% of regulation. The high-side switch is forced off and low-side switch forced on until negative-current limit is reached, then both switches turn off. For MAX20002C/E variants, OVP threshold is lowered to 104% to better manage automotive transients - confirm variant suffix before selecting for OVP-critical designs.
Is the MAX20002EATPB/VY+T pin-compatible with other devices in the MAX20002/MAX20003 family?
Yes, all MAX20002 and MAX20003 variants - including MAX20002EATPB/VY+T, MAX20002CATPB/V+, and MAX20003EATPB/VY+T - share identical 20-pin TQFN pinout and footprint. Differences are limited to current rating (2A vs 3A), internal filtering (E vs C grade), and qualification level - enabling scalable design reuse across performance tiers.
MAX20002EATPB/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V (3.3V)
- Voltage - Output (Max):
- 10V
- Current - Output:
- 2A
- Frequency - Switching:
- 220kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX20002EATPB/VY+T FAQ
1.How can I place an order for MAX20002EATPB/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20002EATPB/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 MAX20002EATPB/VY+T reliable?
The price and inventory of MAX20002EATPB/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 MAX20002EATPB/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20002EATPB/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20002EATPB/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20002EATPB/VY+T?
MAX20002EATPB/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20002EATPB/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 MAX20002EATPB/VY+T?
For technical support, including MAX20002EATPB/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20002EATPB/VY+T requirements.
6.How does Aetrix verify that MAX20002EATPB/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20002EATPB/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 MAX20002EATPB/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20002EATPB/VY+T?
All MAX20002EATPB/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20002EATPB/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 MAX20002EATPB/VY+T part is unused and in its original packaging.
Return procedure for MAX20002EATPB/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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