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Analog Devices Inc./Maxim Integrated MAX20003DATPA/VY+T
- Part No.:
- MAX20003DATPA/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX20003DATPA/VY+T.pdf
- Description:
- IC REG 36V 220KHZ-2.2MHZ 2A/3A
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Product details
Overview
MAX20003DATPA/VY+T 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 regulated 3.3V/5V or programmable 1V–10V output. It features 15µA quiescent current in skip mode, 220kHz–2.2MHz resistor-programmable switching frequency, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX20003DATPA/VY+T datasheet, MAX20003DATPA/VY+T pinout, MAX20003DATPA/VY+T application, or MAX20003DATPA/VY+T equivalent, key selection criteria include dropout operation at 99% duty cycle, ±1% FB accuracy for adjustable outputs, 42V load-dump protection, and spread-spectrum enablement via SPS pin for EMC compliance in harsh environments.
Technical Context
This current-mode buck controller integrates dual MOSFETs, a 5V BIAS LDO, PGOOD monitoring, and internal soft-start (8ms). It supports forced PWM or skip mode via FSYNC logic control and enables synchronization to external clocks up to ±20% deviation.
The device implements cycle-by-cycle current limiting, thermal shutdown at 175°C with 15°C hysteresis, and overvoltage protection triggered at 107% of VFB. Its high-side RON is 60–140mΩ and low-side RON is 35–70mΩ, enabling efficient 3A delivery across automotive temperature range (−40°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous - supports automotive infotainment and ADAS subsystems without external current boosting. |
| Input Voltage Range | 3.5V to 36V - accommodates cold-crank (down to 3.5V) and load-dump (up to 42V transient) conditions per ISO 7637-2. |
| Quiescent Current | 15µA in skip mode - enables always-on functionality in battery-backed modules with minimal standby drain. |
| Switching Frequency | 220kHz to 2.2MHz, resistor-programmable - allows optimization between inductor size (higher fSW) and efficiency (lower fSW). |
| Output Accuracy | ±2% for fixed 3.3V/5V; ±1% FB reference (0.99V–1.01V) for adjustable outputs - ensures stable MCU/SOC core rail regulation. |
| Protection Features | 42V load-dump tolerance, OVP at 107% VFB, thermal shutdown at 175°C - meets automotive reliability requirements without external circuitry. |
| Operating Temperature | −40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood and cabin-mounted ECUs. |
Pinout & Package
MAX20003DATPA/VY+T is housed in a 5mm × 5mm, 20-pin TQFN package with exposed pad (EP), outline number 21-0140, thermal resistance θJA = 30°C/W on four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FOSC | Frequency-setting input | Resistor-to-AGND sets switching frequency from 220kHz to 2.2MHz; determines inductor/capacitor sizing trade-offs. |
| OUT | Power output node | Delivers regulated DC output; powers internal circuitry when VOUT ≥ 3V during light-load skip mode. |
| FB | Feedback sensing input | Connects to resistive divider for 1V–10V adjustment or to BIAS for fixed 3.3V/5V; ±1% reference enables tight regulation. |
| COMP | Error amplifier output | External RC compensation network stabilizes current-mode control loop; critical for transient response and phase margin. |
| BIAS | Internal LDO output | 5V ±5% 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; drives high to activate converter; includes 2.4V threshold and 0.2V hysteresis for robust sequencing. |
| SUP / SUPSW | Dual supply inputs | SUP powers bias regulator; SUPSW powers high-side switch; separate paths improve efficiency and dropout behavior. |
| LX (pins 16–18) | Switching node | Connects to inductor; carries high di/dt; requires low-inductance layout and 0.1µF BST capacitor to LX for gate drive integrity. |
| PGOOD | Open-drain status output | Asserts high when VOUT > 95% regulation; deasserts at 92.5%; used for power sequencing and system fault detection. |
| SPS | Spread-spectrum control | Pull-high enables ±3% triangular frequency modulation - reduces EMI peak emissions without altering average fSW. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3A Power Stage | Eliminates external MOSFETs and drivers; high-side RON ≤ 140mΩ and low-side RON ≤ 70mΩ reduce conduction losses at full load. |
| Ultra-Low Quiescent Current | 15µA in skip mode enables >1-year battery life in always-on telematics modules powered by 12V lead-acid or LiFePO4 cells. |
| Automotive-Grade Protection | 42V load-dump survival, −40°C to +125°C operation, and AEC-Q100 qualification ensure reliability in engine bay and dashboard environments. |
| Flexible Output Configuration | Fixed 3.3V/5V or resistor-adjustable 1V–10V output with ±1% FB accuracy supports diverse SoC, sensor, and interface voltage requirements. |
| EMI-Optimized Operation | Programmable spread spectrum (±3%) and external clock synchronization allow precise EMI profile shaping for CISPR 25 Class 5 compliance. |
Applications
| Infotainment Power Rail | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers display processor, audio codec, and USB hub in automotive head units with wide input transients. IC Role / Device Role / Timing Role: Primary 3.3V/5V step-down regulator delivering 3A with fast transient response to burst-mode video processing loads. Use Value: 99% dropout operation maintains output during cold-crank events; PGOOD enables safe boot sequencing with host MCU. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera systems mounted near vehicle exterior. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC converter providing stable 1.8V or 2.8V rail from 12V battery with minimal PCB area. Use Value: AEC-Q100 qualification and 42V load-dump tolerance prevent field failures due to alternator surges or jump-start conditions. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) Subsystem |
|
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in connected vehicle gateways requiring always-on capability. IC Role / Device Role / Timing Role: Low-IQ buck converter maintaining 3.3V rail during sleep mode while supporting rapid wake-up via EN pin. Use Value: 15µA quiescent current extends battery backup runtime; spread-spectrum mode reduces conducted EMI into cellular antenna traces. |
Use Scenario: Generates 5V rail for microcontroller, CAN transceiver, and LIN interface in centralized body electronics architecture. IC Role / Device Role / Timing Role: High-efficiency, high-reliability point-of-load regulator with integrated EN and PGOOD for coordinated power management. Use Value: Dual SUP/SUPSW inputs isolate bias and switch supplies, improving efficiency at light loads and simplifying layout versus discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQWR | 3.5A rating, 3.5V–36V input, 14µA IQ, but no integrated spread-spectrum; uses external compensation. | Requires additional EMI filtering components; lacks SPS pin for built-in spectral spreading. | Preferred where external loop tuning is required or when sourcing from TI's long-lifecycle automotive portfolio. |
| TPS543B20RJER | 3A, 4.5V–18V input (narrower range), 12µA IQ, PMBus interface, but not AEC-Q100 qualified. | Not rated for automotive transients beyond 18V; unsuitable for direct battery connection in 12V/24V systems. | Appropriate for industrial embedded systems with stable 12V input and digital telemetry needs. |
Compared with LM61480RQWR and TPS543B20RJER, MAX20003DATPA/VY+T uniquely combines AEC-Q100 qualification, 42V load-dump tolerance, integrated spread-spectrum, and dual-supply architecture-making it the only option qualified for direct integration into automotive front-end power domains without derating or supplemental protection.
Availability
MAX20003DATPA/VY+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply across extended temperature and transient stress conditions.
Supply support for MAX20003DATPA/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 automotive, industrial, and communications markets.
MAX20003DATPA/VY+T belongs to the MAX2000x automotive-grade buck converter family, engineered specifically for demanding 12V/24V battery-fed systems requiring high reliability, low quiescent current, and robust transient handling.
FAQ
What is the maximum output current supported by the MAX20003DATPA/VY+T?
The MAX20003DATPA/VY+T delivers up to 3A continuous output current under specified thermal conditions (θJA = 30°C/W, TA ≤ +70°C). Its LX current limit is guaranteed at 3.75A (min) to 6.25A (max), enabling reliable operation across automotive temperature range with proper PCB copper area and airflow.
Does the MAX20003DATPA/VY+T support adjustable output voltage?
Yes, the MAX20003DATPA/VY+T supports both fixed 3.3V/5V outputs (by connecting FB to BIAS) and adjustable 1V–10V outputs using an external resistive divider from OUT to FB to AGND. The FB pin has ±1% reference accuracy (0.99V–1.01V), ensuring tight regulation across line, load, and temperature.
How does the MAX20003DATPA/VY+T handle automotive load-dump transients?
The MAX20003DATPA/VY+T withstands 42V load-dump transients per ISO 7637-2 thanks to internal clamp structures and robust process design. Its absolute maximum SUP/SUPSW rating is +42V, and it remains functional without latch-up or parametric shift during standardized 350ms, 42V pulses.
Can the MAX20003DATPA/VY+T operate in dropout mode?
Yes, the MAX20003DATPA/VY+T operates in dropout with up to 99% duty cycle, enabling regulation even when input voltage drops close to output voltage-critical during automotive cold-crank events (e.g., 6V input sustaining 5V output). This behavior is enabled automatically without external control.
What is the purpose of the SPS pin on the MAX20003DATPA/VY+T?
The SPS (Spread Spectrum) pin on the MAX20003DATPA/VY+T enables or disables ±3% triangular frequency modulation centered on the programmed FOSC frequency. When pulled high, it reduces EMI peak emissions; when low, it disables modulation-providing design flexibility for CISPR 25 compliance testing and layout optimization.
MAX20003DATPA/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- -
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- Topology:
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- Output Type:
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- Number of Outputs:
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- Voltage - Input (Min):
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- Voltage - Input (Max):
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- Voltage - Output (Min/Fixed):
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- Voltage - Output (Max):
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- Current - Output:
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- Frequency - Switching:
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- Synchronous Rectifier:
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- Supplier Device Package:
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MAX20003DATPA/VY+T FAQ
1.How can I place an order for MAX20003DATPA/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20003DATPA/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 MAX20003DATPA/VY+T reliable?
The price and inventory of MAX20003DATPA/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 MAX20003DATPA/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20003DATPA/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20003DATPA/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20003DATPA/VY+T?
MAX20003DATPA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20003DATPA/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 MAX20003DATPA/VY+T?
For technical support, including MAX20003DATPA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20003DATPA/VY+T requirements.
6.How does Aetrix verify that MAX20003DATPA/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20003DATPA/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 MAX20003DATPA/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20003DATPA/VY+T?
All MAX20003DATPA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20003DATPA/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 MAX20003DATPA/VY+T part is unused and in its original packaging.
Return procedure for MAX20003DATPA/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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