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Analog Devices Inc./Maxim Integrated MAX20003DATPA/VY+
- Part No.:
- MAX20003DATPA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX20003DATPA/VY+.pdf
- Description:
- IC REG 36V 220KHZ-2.2MHZ 2A/3A
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Product details
Overview
MAX20003DATPA/VY+ from Maxim Integrated is a 3A 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 achieves 15µA quiescent current in skip mode, supports 220kHz–2.2MHz resistor-programmable switching frequency, and features PGOOD monitoring and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX20003DATPA/VY+ datasheet, MAX20003DATPA/VY+ pinout, MAX20003DATPA/VY+ application, or MAX20003DATPA/VY+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade operating parameters (−40°C to +125°C, 42V load-dump tolerance), and real-world alternative selection guidance - all grounded in Maxim's official documentation and electrical characteristics table.
Technical Context
The MAX20003DATPA/VY+ implements current-mode control with internal transconductance error amplifier (700µS), 8ms fixed soft-start, and cycle-by-cycle overcurrent protection. 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 distinct operating modes: forced PWM (via FSYNC tied to BIAS or external clock) and skip mode (FSYNC tied to AGND), with spread-spectrum modulation (±3% frequency dither, 110µs period at 2.2MHz) enabled via SPS pin. Thermal shutdown activates at 175°C with 15°C hysteresis, and overvoltage protection triggers at 107% VFB rising edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous - supports automotive infotainment and ADAS subsystems requiring robust point-of-load regulation. |
| 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, body control modules) without draining battery. |
| Switching Frequency | 220kHz to 2.2MHz, resistor-programmable - allows optimization of inductor size, EMI profile, and efficiency across light-to-full load. |
| Output Accuracy | ±2% for fixed 5V/3.3V outputs; ±1% FB reference (0.99V–1.01V) for adjustable configurations - ensures reliable MCU and sensor rail compliance. |
| Protection Features | 42V load-dump tolerance, 99% max duty cycle, thermal shutdown (175°C), OVP (107% VFB), and cycle-by-cycle current limit - meets ISO 7637-2 and AEC-Q100 stress requirements. |
| Operating Temperature | −40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood and cabin-mounted applications. |
Pinout & Package
MAX20003DATPA/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 (four-layer board), θJC = 2°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FOSC | Frequency-setting input | Resistor-to-AGND sets switching frequency (220kHz–2.2MHz); determines inductor/capacitor sizing and EMI behavior. |
| 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 adjustable output (1V–10V) or to BIAS for fixed 5V/3.3V; ±1% reference accuracy enables tight regulation. |
| COMP | Error amplifier output | External RC compensation network stabilizes current-mode loop; critical for transient response and phase margin in automotive loads. |
| BIAS | Internal LDO output | 5V ±0.3V linear regulator powering internal logic; requires ≥2.2µF ceramic bypass to AGND for noise immunity. |
| EN | High-voltage enable input | Logic-compatible with 3.5V–36V inputs (e.g., KL30, CAN transceiver INH); 2.4V threshold enables direct battery monitoring. |
| SUPSW | High-side switch supply | Dedicated input for gate driver; decoupled with 0.1µF + 4.7µF ceramics to PGND to sustain 3A switching under transients. |
| SUP | Main supply input | Powers internal bias regulator; bypassed with 2.2µF ceramic to PGND; supports wide VIN range without external LDO. |
| PGOOD | Open-drain power-good signal | Asserts high when VOUT > 95% regulation; deasserts at <92.5%; used for sequencing microcontrollers and safety-critical subsystems. |
| SPS | Spread-spectrum control | Logic-high enables ±3% triangular dither on fSW; reduces peak EMI amplitude for CISPR 25 Class 5 compliance. |
| FSYNC | Mode selection & sync input | Tied to AGND → skip mode; tied to BIAS/external clock → forced PWM; synchronizes to external clocks within ±20% frequency deviation. |
| LX (pins 16–18) | Switching node | Three parallel pins reduce parasitic inductance; connects to inductor; requires low-ESR BST capacitor (0.1µF) between LX and BST. |
| PGND (pins 13–14) | Power ground return | Separate from AGND; must be connected to large copper pour under EP; handles high di/dt currents from LX switching. |
| AGND (pin 6) | Analog ground reference | Reference for FB, COMP, EN, FOSC; must be star-connected to PGND only at single point near EP to avoid noise coupling. |
| BST (pin 15) | Bootstrap supply | Supplies high-side gate driver; capacitor between BST and LX provides floating voltage for N-channel MOSFET drive. |
| EP | Exposed thermal pad | Mandatory connection to PGND plane; primary thermal path; contributes to θJA = 30°C/W; not a functional ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers; RDS(on) = 60mΩ (high-side) / 35mΩ (low-side) minimizes conduction loss at 3A. |
| Ultra-low quiescent current | 15µA in skip mode enables >10-year battery life in always-on automotive modules (e.g., keyless entry, remote diagnostics). |
| Automotive-grade protection suite | 42V load-dump tolerance, −40°C to +125°C operation, AEC-Q100 qualification, and fast OVP recovery ensure reliability in harsh environments. |
| Flexible output configuration | Fixed 5V/3.3V or resistor-adjustable 1V–10V output with ±1% FB accuracy supports diverse SoC, MCU, and sensor rail requirements. |
| EMI-optimized operation | Programmable frequency + spread spectrum + forced PWM mode allows system-level EMI tuning to meet CISPR 25 limits without shielding. |
Applications
| Navigation & Radio Head Units | ADAS Camera Power Supply |
|---|---|
|
Use Scenario: Powering display controllers, audio DSPs, and RF tuners in automotive head units with variable battery voltage and strict EMI limits. IC Role / Device Role / Timing Role: Primary 3.3V/5V point-of-load regulator delivering clean, sequenced power with PGOOD confirmation. Use Value: 15µA quiescent current extends ignition-off battery life; 2.2MHz operation enables compact 2.2µH inductor and low-profile ceramic capacitors. |
Use Scenario: Supplying image sensors and ISP processors in forward-facing cameras where thermal dissipation and transient response are critical. IC Role / Device Role / Timing Role: High-efficiency 3A buck converter with fast load-step response and thermal shutdown for safety-critical vision systems. Use Value: 99% duty cycle sustains output during cold-crank dips; ±2% output accuracy ensures sensor ADC reference stability. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Regulating power for door modules, lighting drivers, and LIN transceivers in distributed vehicle networks. IC Role / Device Role / Timing Role: Robust 5V rail generator tolerant of load-dump events and reverse-battery conditions (with external protection). Use Value: 42V absolute max rating and AEC-Q100 qualification eliminate need for external TVS in many BCM designs. |
Use Scenario: Providing always-on 3.3V supply for cellular modems, GNSS receivers, and secure boot circuits in connected vehicles. IC Role / Device Role / Timing Role: Low-IQ buck converter with EN-controlled wake-up and PGOOD sequencing for secure firmware initialization. Use Value: 5µA shutdown current prevents battery drain during vehicle dormancy; EN pin compatibility with CAN transceiver INH simplifies system integration. |
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 | 3.8V–36V input, 4A output, 15µA IQ, fixed 5V/3.3V or adjustable 1V–10V; no spread spectrum; uses different pinout (no dedicated SPS pin). | Targets industrial and telecom; lacks AEC-Q100 qualification and 42V load-dump rating; optimized for higher current density rather than automotive transients. | Select LM61480RQR only if AEC-Q100 and load-dump immunity are not required, and PCB layout allows rework for non-pin-compatible footprint. |
| TPS62933RQNR | 3V–36V input, 3A output, 12µA IQ, 1.8V–10V adjustable output only (no fixed 5V/3.3V option); includes PMBus interface; smaller 3mm × 4mm QFN. | Designed for programmable power management in servers and test equipment; lacks PGOOD open-drain structure and automotive temperature range. | Choose TPS62933RQNR when digital control and telemetry are needed, but verify that −40°C to +125°C operation and 42V surge tolerance are handled externally. |
Compared with LM61480RQR and TPS62933RQNR, MAX20003DATPA/VY+ uniquely combines AEC-Q100 qualification, 42V load-dump tolerance, integrated spread-spectrum control, and fixed 5V/3.3V outputs - making it the only drop-in solution for automotive front-end power without external protection or sequencing logic.
Availability
MAX20003DATPA/VY+ is available at Aetrix Electronics and suitable for automotive navigation systems, ADAS camera modules, body control units, and telematics control units requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX20003DATPA/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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX20003 is part of Maxim's automotive-qualified power management portfolio, designed specifically for demanding 12V/24V vehicle systems requiring ultra-low quiescent current, high transient immunity, and AEC-Q100 compliance.
FAQ
What is the maximum output current capability of the MAX20003DATPA/VY+?
The MAX20003DATPA/VY+ delivers up to 3A continuous output current under typical conditions (TA = +25°C, 2.2MHz, VIN = 14V, VOUT = 5V). Its LX current limit is specified at 3.75A (min) to 6.25A (max), ensuring robust overload handling. Derating applies above +70°C ambient due to thermal limits (θJA = 30°C/W).
Does the MAX20003DATPA/VY+ support fixed 5V and 3.3V outputs without external resistors?
Yes, the MAX20003DATPA/VY+ supports fixed 5V and 3.3V outputs by connecting the FB pin directly to the BIAS pin. This configuration leverages the internal 1V feedback reference and achieves ±2% output accuracy without external components - ideal for simplified automotive subsystem designs.
How does the MAX20003DATPA/VY+ handle cold-crank conditions in automotive applications?
The MAX20003DATPA/VY+ maintains regulation during cold-crank (as low as 3.5V input) by operating at up to 99% duty cycle. Its dual-supply architecture (SUP and SUPSW) and internal bias switchover ensure stable startup and continuous operation even when input voltage drops below the output voltage target.
What is the purpose of the SPS pin on the MAX20003DATPA/VY+?
The SPS (Spread Spectrum) pin on the MAX20003DATPA/VY+ enables or disables ±3% triangular frequency dither centered on the programmed fSW. When pulled high, it reduces peak EMI emissions to help meet CISPR 25 Class 5 requirements - a critical feature for automotive infotainment and ADAS systems.
Is the MAX20003DATPA/VY+ qualified for automotive use per AEC-Q100 standards?
Yes, the MAX20003DATPA/VY+ is AEC-Q100 qualified (Grade 1: −40°C to +125°C ambient), includes 42V load-dump protection, operates across the full automotive battery range (3.5V–36V), and features thermal shutdown with hysteresis - confirming its suitability for under-hood and cabin-mounted automotive power applications.
MAX20003DATPA/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- -
MAX20003DATPA/VY+ FAQ
1.How can I place an order for MAX20003DATPA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20003DATPA/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 MAX20003DATPA/VY+ reliable?
The price and inventory of MAX20003DATPA/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20003DATPA/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20003DATPA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20003DATPA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20003DATPA/VY+?
MAX20003DATPA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20003DATPA/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 MAX20003DATPA/VY+?
For technical support, including MAX20003DATPA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20003DATPA/VY+ requirements.
6.How does Aetrix verify that MAX20003DATPA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20003DATPA/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 MAX20003DATPA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20003DATPA/VY+?
All MAX20003DATPA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20003DATPA/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 MAX20003DATPA/VY+ part is unused and in its original packaging.
Return procedure for MAX20003DATPA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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