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Analog Devices Inc./Maxim Integrated MAX20075ATCA/V+T
- Part No.:
- MAX20075ATCA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20075ATCA/V+T.pdf
- Description:
- IC REG BUCK PROG/1V 600MA 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,470
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Product details
Overview
MAX20075ATCA/V+T from Analog Devices is a 36V, 600mA synchronous buck converter with integrated high-side and low-side MOSFETs, fixed 5V output, ±2% accuracy over 6V–18V input, 2.1MHz switching frequency, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX20075ATCA/V+T datasheet, MAX20075ATCA/V+T pinout, MAX20075ATCA/V+T application, or MAX20075ATCA/V+T equivalent, this page delivers verified electrical specs, validated pin functions, confirmed automotive-grade thermal and protection behavior, and real-world design constraints for FPWM-only operation in 12-pin TDFN packages.
Technical Context
This current-mode-controlled buck regulator operates exclusively in forced PWM (FPWM) mode-skip mode is not supported-and uses an internal 2.1MHz oscillator with optional ±6% spread-spectrum modulation via the SPS pin to reduce EMI. It maintains regulation down to 99% duty cycle during dropout, enabling direct 5V generation from cold-crank automotive inputs as low as 3.5V.
The device integrates 300mΩ high-side and 200mΩ low-side MOSFETs, features a 2.5ms fixed soft-start, monitors output health via open-drain PGOOD (93.5% rising threshold), and provides 40V load-dump tolerance with thermal shutdown at 175°C and 15°C hysteresis. All logic inputs (EN, SYNC, SPS) are high-voltage compatible up to VSUP + 0.3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 600mA continuous - supports compact 5V rail generation for microcontrollers and sensors without external current boosting. |
| Input Voltage Range | 3.5V to 36V - accommodates automotive battery transients including 40V load dump (non-operational stress). |
| Fixed Output Voltage | 5.0V ±2% - factory-trimmed accuracy eliminates need for external feedback resistors in standard 5V applications. |
| Switching Frequency | 2.1MHz (typ) - enables use of small 4.7µH inductors and 22µF ceramic output capacitors, avoiding AM-band interference. |
| Minimum On-Time | 66ns - allows stable 5V output from ≥75V input (e.g., 36V nominal with margin), supporting wide VIN-to-VOUT ratios. |
| Operating Temperature | -40°C to +125°C - qualified per AEC-Q100 Grade 1, suitable for under-hood and industrial control environments. |
| Package | 12-pin TDFN (3mm × 3mm, exposed pad) - side-wettable variant available; thermal resistance θJA = 41°C/W on 4-layer board. |
Pinout & Package
MAX20075ATCA/V+T is housed in a 3mm × 3mm, 12-pin thermally enhanced TDFN package with exposed pad (EP), RoHS-compliant and automotive-qualified. The EP must be soldered to PGND for thermal performance and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable | Logic-high enables ±6% frequency modulation to reduce peak EMI emissions; internal 1MΩ pulldown ensures default disable. |
| 2 EN | High-voltage enable input | Active-high control compatible with 3.3V/5V logic or direct battery connection; no internal pullup/pulldown minimizes quiescent current. |
| 3 BST | Bootstrap supply for high-side gate driver | Requires 0.1µF ceramic capacitor to LX; critical for maintaining high-side FET gate drive during 99% duty-cycle dropout operation. |
| 4 SUP | Main power input | Accepts 3.5V–36V; requires 4.7µF low-ESR ceramic capacitor to PGND for stable high-frequency decoupling. |
| 5 LX | Switch node | Connects to 4.7µH inductor; internal clamp diodes to PGND/AGND/SUP require careful layout to avoid exceeding power dissipation limits. |
| 6 PGND | Power ground return | Low-impedance path for high-current switching loops; must be connected to EP and output capacitor negative terminal. |
| 7 AGND | Analog ground reference | Return for FB, BIAS, and quiet analog circuitry; joined to PGND only at single point (output capacitor cathode) to prevent noise coupling. |
| 8 FB | Feedback input | Connected to BIAS for fixed 5V operation; for adjustable outputs, forms resistor divider with OUT and AGND (VFB = 1.0V ±1.5%). |
| 9 OUT | Regulated output | Bypassed with 22µF ceramic capacitor to PGND; supplies 600mA load with <100mV AC ripple in typical FPWM operation. |
| 10 BIAS | Internal 5V bias supply | Provides regulated 5V for internal circuitry and FB reference; requires ≥1µF ceramic capacitor to AGND for stability. |
| 11 SYNC | Oscillator synchronization input | Connected to BIAS to enable internal 2.1MHz clock; external clock input supported (1.7–2.6MHz); internal 1MΩ pulldown defaults to FPWM. |
| 12 PGOOD | Open-drain power-good indicator | Pulls low when VOUT falls below 93% nominal; requires external 20kΩ pullup to BIAS or system rail for sequencing and fault detection. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers; 300mΩ/200mΩ RDS(on) enables >90% efficiency at 5V/600mA with 14V input. |
| 2.1MHz fixed-frequency FPWM operation | Guarantees constant switching frequency across all loads-critical for predictable EMI filtering and avoiding AM band interference. |
| PGOOD with 93.5% rising threshold | Enables precise power-rail monitoring and safe sequencing with microcontrollers or PMICs without external comparators. |
| 40V load-dump tolerance and -40°C to +125°C range | Validated for automotive front-end power stages where transient immunity and junction temperature extremes are mission-critical. |
| 2.5ms internal soft-start | Prevents inrush current and output overshoot during startup; restarts automatically after short-circuit removal with 6ms blanking interval. |
| Side-wettable TDFN option (TD1233Y+2C) | Enables automated optical inspection (AOI) of solder joints on production PCBs-essential for automotive manufacturing traceability. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Supply |
|---|---|
Use Scenario: Powering CAN transceivers, LIN interface ICs, and sensor signal conditioners in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary 5V DC-DC regulator delivering clean, sequenced power with PGOOD confirmation before microcontroller boot. Use Value: Withstands 40V load dump and cold-crank down to 3.5V while maintaining 5V ±2% output-enabling single-stage conversion without pre-regulators. |
Use Scenario: Generating isolated 5V rails for digital I/O expansion cards in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Compact, high-reliability buck converter supplying FPGA configuration voltage and level-shifting logic. Use Value: AEC-Q100 qualification and 125°C ambient rating ensure uninterrupted operation in uncooled control cabinets with ambient temperatures up to +70°C. |
| Automotive ADAS Camera Power | High-Voltage Industrial Sensor Node |
Use Scenario: Providing stable 5V power to image sensors and ISP processors in rear-view and surround-view camera modules. IC Role / Device Role / Timing Role: Primary power stage with fast transient response and low-noise output to preserve image quality and minimize EMI-induced pixel artifacts. Use Value: 2.1MHz switching and 22µF ceramic output capacitor yield <10mVpp ripple-meeting CISPR-25 Class 5 radiated emission requirements. |
Use Scenario: Converting 24V or 48V industrial bus voltage to 5V for wireless sensor transceivers and analog front-ends in predictive maintenance systems. IC Role / Device Role / Timing Role: High-input-voltage buck regulator with minimal external components, reducing BOM count and PCB area in space-constrained nodes. Use Value: 66ns minimum on-time supports direct 5V regulation from 48V input (duty cycle ~10%), eliminating need for cascaded converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20076ATCA/V+T | 1.2A output current, identical pinout and package; same 5V ±2% accuracy and 2.1MHz FPWM operation. | Supports higher-current 5V rails (e.g., multi-core MCUs, Ethernet PHYs) without changing PCB layout or thermal design. | Select when load exceeds 600mA but footprint and timing constraints remain unchanged. |
| LM61480QRTWRQ1 | 1.5A output, 2.1MHz fixed frequency, AEC-Q100 Grade 1; requires external compensation and lacks spread-spectrum capability. | Offers higher current and wider input range (3V–36V), but needs additional loop compensation components and has no PGOOD hysteresis spec. | Choose when needing >600mA with TI's automotive support ecosystem, accepting added design complexity for margin. |
Compared with MAX20075ATCA/V+T, MAX20076ATCA/V+T doubles output current in identical form factor, while LM61480QRTWRQ1 trades integrated simplicity for higher current and TI-specific qualification-neither is pin-compatible without validation, but both serve adjacent 5V automotive buck requirements.
Availability
MAX20075ATCA/V+T is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, ADAS camera modules, and high-voltage sensor nodes requiring stable component supply with full AEC-Q100 compliance and long-term lifecycle assurance.
Supply support for MAX20075ATCA/V+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets with precision power, sensing, and signal chain solutions.
The MAX20075/MAX20076 family was designed specifically for space-constrained, high-reliability automotive DC-DC conversion-delivering 5V/3.3V rails directly from battery with minimal external components and robust transient handling.
FAQ
What is the maximum input voltage the MAX20075ATCA/V+T can withstand without damage?
The MAX20075ATCA/V+T has an absolute maximum input voltage rating of 40V for transient conditions such as automotive load dump. Continuous operation is specified from 3.5V to 36V. Exceeding 40V-even briefly-may cause permanent damage, and the device does not operate above 36V. The 40V rating applies only to non-operational stress events, not functional operation.
Does the MAX20075ATCA/V+T support skip-mode or DCM operation?
No, the MAX20075ATCA/V+T is designed exclusively for forced PWM (FPWM) operation. Skip-mode or discontinuous conduction mode (DCM) is not supported-this is explicitly stated in the datasheet's "Benefits and Features" section. The device maintains constant 2.1MHz switching across all load conditions, which simplifies EMI filtering but increases light-load quiescent current compared to adaptive modes.
Can the MAX20075ATCA/V+T be used to generate a 3.3V output instead of 5V?
No-the MAX20075ATCA/V+T is factory-trimmed for fixed 5V output only. To obtain 3.3V, you must select MAX20075ATCB/V+T, which shares identical package, pinout, and specifications except for the internal feedback reference. Swapping part numbers requires no PCB change, but substituting ATCA/V+T for ATCB/V+T will deliver 5V, not 3.3V.
What is the purpose of the SYNC pin on the MAX20075ATCA/V+T?
The SYNC pin on the MAX20075ATCA/V+T enables synchronization to an external clock (1.7–2.6MHz) or selects internal FPWM operation. When tied to BIAS, it activates the internal 2.1MHz oscillator. Leaving it floating or pulled low disables synchronization and defaults to internal clocking via its 1MΩ internal pulldown. It does not support frequency adjustment-only enable/disable or external source selection.
Is the exposed pad (EP) on the MAX20075ATCA/V+T electrically connected or thermal-only?
The exposed pad (EP) on the MAX20075ATCA/V+T is electrically connected to PGND and must be soldered to the PCB's power ground plane. It serves both thermal dissipation (reducing θJA by ~25°C/W) and electrical grounding-connecting EP to any net other than PGND violates the recommended layout and risks malfunction or thermal failure. No current flows through EP under normal operation, but it is not isolated.
MAX20075ATCA/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN 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
- Voltage - Output (Max):
- 10V
- Current - Output:
- 600mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX20075ATCA/V+T FAQ
1.How can I place an order for MAX20075ATCA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20075ATCA/V+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 MAX20075ATCA/V+T reliable?
The price and inventory of MAX20075ATCA/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20075ATCA/V+T is usually 5 days.
3.What payment methods are accepted for MAX20075ATCA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20075ATCA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20075ATCA/V+T?
MAX20075ATCA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20075ATCA/V+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 MAX20075ATCA/V+T?
For technical support, including MAX20075ATCA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20075ATCA/V+T requirements.
6.How does Aetrix verify that MAX20075ATCA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20075ATCA/V+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 MAX20075ATCA/V+T meets industry standards.
7.What is the process for return or replacement of MAX20075ATCA/V+T?
All MAX20075ATCA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20075ATCA/V+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 MAX20075ATCA/V+T part is unused and in its original packaging.
Return procedure for MAX20075ATCA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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