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Analog Devices Inc./Maxim Integrated MAX20075DATCB/V+
- Part No.:
- MAX20075DATCB/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20075DATCB/V+.pdf
- Description:
- IC REG BCK ADJ/3V 600MA 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,533
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Product details
Overview
MAX20075DATCB/V+ from Analog Devices is a 36V-input, 0.6A synchronous buck converter with integrated high-side and low-side MOSFETs, 3.5µA quiescent current in standby mode, ±2% output voltage accuracy at 3.3V, and 2.1MHz fixed switching frequency - designed for automotive power rails requiring compact, low-IQ DC-DC conversion.
For engineers reviewing the MAX20075DATCB/V+ datasheet, MAX20075DATCB/V+ pinout, MAX20075DATCB/V+ application, or MAX20075DATCB/V+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade operating range (–40°C to +125°C), AEC-Q100 qualification, and real-world EMI mitigation via spread-spectrum enable.
Technical Context
The MAX20075DATCB/V+ implements current-mode control with no external compensation required, enabling stable regulation across wide input (3.5V–36V) and output (3.3V fixed) ranges. Its 20ns minimum on-time supports direct step-down from automotive battery to sub-3V rails, eliminating two-stage architectures.
It integrates a 5V internal BIAS LDO, open-drain PGOOD monitoring, and programmable spread-spectrum modulation (±6% around 2.1MHz) for EMI reduction. Operation includes forced-PWM (via SYNC high) and skip-mode (SYNC grounded), with automatic transition between modes based on load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 0.6A continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in automotive ECUs. |
| Input Voltage Range | 3.5V to 36V - accommodates cold-crank (3.5V) and load-dump (40V transient) conditions per ISO 7637-2. |
| Quiescent Current | 3.5µA at no load - enables always-on functionality without draining vehicle battery during extended parking. |
| Output Voltage | Fixed 3.3V with ±2% accuracy - meets tight tolerance requirements for digital logic supply rails. |
| Switching Frequency | 2.1MHz (typical) - allows use of small 4.7µH inductors and 22µF ceramic output capacitors, reducing solution footprint. |
| Minimum On-Time | 66ns - enables 3.3V output directly from 12V/24V battery without intermediate conversion stages. |
| Thermal Protection | 175°C thermal shutdown with 15°C hysteresis - ensures safe operation under sustained overload or poor PCB heatsinking. |
Pinout & Package
MAX20075DATCB/V+ uses a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+2C) with exposed thermal pad connected to PGND for enhanced thermal performance in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable input | Logic-high enables ±6% frequency modulation to reduce peak EMI emissions; internal 1MΩ pulldown ensures default disable. |
| 2 EN | High-voltage enable input | Accepts 3.3V–36V logic; device disabled when pulled low - supports direct connection to automotive KEY or CAN inhibit signals. |
| 3 BST | Bootstrap capacitor node | Drives high-side FET gate; requires 0.1µF ceramic capacitor to LX to sustain gate drive during 99% duty-cycle dropout operation. |
| 4 SUP | Main input supply | 3.5V–36V input rail; requires 4.7µF ceramic capacitor to PGND for stability and transient response. |
| 5 LX | Switch node | Connects to inductor; switches between SUP and PGND; internal clamp diodes protect against inductive kickback. |
| 6 PGND | Power ground | Low-impedance return path for high-current switching loops - must be separated from AGND to minimize noise coupling. |
| 7 AGND | Analog ground | Reference for FB, PGOOD, and internal error amplifier - connects to system analog ground plane only. |
| 8 FB | Feedback input | Monitors output via resistor divider; 1.0V reference with ±1.5% accuracy - tied to BIAS for fixed 3.3V operation. |
| 9 OUT | Regulated output | 3.3V output node; bypassed with 22µF ceramic capacitor to PGND for low-ESR filtering and ripple suppression. |
| 10 BIAS | Internal 5V bias supply | Provides gate drive and internal circuitry power; requires ≥1µF ceramic capacitor to AGND for stability. |
| 11 SYNC | Mode control / sync input | Ground = skip mode (ultra-low IQ); BIAS = forced PWM (constant fSW); supports external clock up to 2.6MHz. |
| 12 PGOOD | Open-drain power-good output | Active-high signal indicating VOUT ≥ 93.5% of nominal; requires external 20kΩ pullup to BIAS or system rail. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck architecture with integrated FETs | Eliminates need for external MOSFETs and drivers - reduces BOM count and layout complexity in space-constrained automotive modules. |
| 99% maximum duty cycle | Enables operation in dropout (e.g., 12V input → 3.3V output at cold crank) without output collapse - critical for engine control units. |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a transients without external TVS - simplifies front-end protection design for 12V/24V systems. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive reliability requirements for under-hood and cabin applications. |
| 2.5ms internal soft-start | Prevents inrush current during power-up - avoids tripping upstream fuses and stabilizes downstream digital loads. |
Applications
| Automotive Body Control Module | Industrial Sensor Node Power |
|---|---|
Use Scenario: Powers MCU, LIN transceiver, and door-lock actuator drivers in BCMs with 12V battery input. IC Role / Device Role / Timing Role: Primary 3.3V power rail regulator delivering stable, low-noise supply under cold-crank and load-dump conditions. Use Value: 3.5µA quiescent current prevents battery drain during vehicle sleep mode; AEC-Q100 qualification ensures field reliability. |
Use Scenario: Supplies 3.3V to MEMS pressure sensors and RS-485 transceivers in factory-floor condition-monitoring nodes. IC Role / Device Role / Timing Role: Isolated DC-DC stage converting 24V industrial bus to clean 3.3V logic rail with minimal external components. Use Value: 2.1MHz switching enables compact 3mm × 3mm solution size; 36V max input handles brownout and surge events. |
| Automotive Infotainment Display | Telematics Control Unit (TCU) |
Use Scenario: Generates 3.3V for display controller ASIC and touch-screen interface in center-stack infotainment systems. IC Role / Device Role / Timing Role: Secondary buck regulator fed from main 5V rail or directly from battery; provides low-ripple, EMI-controlled supply. Use Value: Spread-spectrum modulation (SPS pin) reduces radiated emissions near sensitive RF receivers; PGOOD enables safe boot sequencing. |
Use Scenario: Powers cellular modem, GNSS receiver, and CAN FD controller in vehicle-to-cloud communication modules. IC Role / Device Role / Timing Role: High-reliability 3.3V source supporting always-on wake-on-CAN functionality and fast startup from deep sleep. Use Value: 66ns min on-time enables direct 12V→3.3V conversion; 99% duty cycle sustains output during cranking transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20076DATCB/V+ | 1.2A output current, same package and pinout; identical features except higher current capability and adjusted current-limit threshold (1.9A vs. 1.2A). | Required where >600mA load current is needed (e.g., multi-core MCUs or dual-display systems). | Select MAX20076DATCB/V+ only if peak load exceeds 0.6A; otherwise MAX20075DATCB/V+ offers better light-load efficiency and smaller thermal footprint. |
| TPS62933RTER | 0.6A, 3V–36V input, 2.1MHz, but lacks AEC-Q100 qualification, 40V load-dump rating, and integrated spread-spectrum modulation. | Suitable for industrial or consumer applications where automotive qualification is not mandated. | Choose TPS62933RTER for cost-sensitive non-automotive designs; MAX20075DATCB/V+ remains mandatory for automotive OEM programs. |
Compared with MAX20076DATCB/V+, the MAX20075DATCB/V+ delivers optimized efficiency below 0.6A while maintaining identical footprint and feature set; versus TPS62933RTER, it adds automotive-specific protections and certifications essential for ECU deployment.
Availability
MAX20075DATCB/V+ is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor nodes, infotainment displays, and telematics control units requiring stable component supply with full AEC-Q100 traceability.
Supply support for MAX20075DATCB/V+ 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 is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving automotive, industrial, and communications markets since 1965.
The MAX20075D/MAX20076D family targets automotive power conversion with ultra-low IQ, wide VIN, and AEC-Q100 compliance - specifically engineered for next-generation ECU, ADAS, and electrification subsystems.
FAQ
What is the maximum input voltage the MAX20075DATCB/V+ can withstand during load-dump events?
The MAX20075DATCB/V+ is rated for 40V transient input per ISO 7637-2 Pulse 5a, with absolute maximum SUP rating of +40V for <1s. This allows direct integration into 12V/24V automotive systems without external TVS diodes in many cases. The device remains functional after such events if thermal limits are not exceeded, and its internal protection circuitry prevents latch-up or permanent damage.
Does the MAX20075DATCB/V+ require an external compensation network?
No, the MAX20075DATCB/V+ uses a proprietary current-mode control architecture that eliminates the need for external compensation components. Its internal loop is fully stabilized across all operating conditions - including full input (3.5V–36V) and output (3.3V) ranges - reducing design time and board area. This is confirmed in the "Detailed Description" section of the official datasheet.
How does the MAX20075DATCB/V+ achieve 3.5µA quiescent current?
The MAX20075DATCB/V+ achieves 3.5µA quiescent current by entering standby mode when load falls below ~5mA: it disables the internal high-voltage LDO, shuts down non-essential bias circuits, and maintains regulation using only the output voltage to power core feedback elements. This behavior is verified in Electrical Characteristics Table (ISUP = 3.5µA, no load, no switching) and applies specifically to the MAX20075DATCB/V+ 3.3V variant.
Can the MAX20075DATCB/V+ operate in dropout, and what is its minimum dropout voltage?
Yes, the MAX20075DATCB/V+ supports 99% maximum duty cycle, enabling operation in dropout - e.g., sustaining 3.3V output with 3.5V input. Its effective dropout voltage is ~100mV at 0.6A (calculated from RON,HS ≈ 550mΩ and RON,LS ≈ 350mΩ). This is validated in the "Extended Input Voltage Range" section and confirmed by test data showing stable regulation down to VIN = 3.5V.
Is the MAX20075DATCB/V+ pin-compatible with other devices in the MAX20075D/MAX20076D family?
Yes, the MAX20075DATCB/V+ shares identical 12-pin side-wettable TDFN package (TD1233Y+2C), pinout, and footprint with MAX20076DATCB/V+, MAX20076EATCB/VY+, and MAX25276DATCA/VY+. All variants use the same land pattern (90-100072) and thermal pad layout - enabling drop-in replacement where current or voltage requirements differ, provided layout constraints and thermal design accommodate the variant's power dissipation.
MAX20075DATCB/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3V (3.3V)
- Voltage - Output (Max):
- 10V
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX20075DATCB/V+ FAQ
1.How can I place an order for MAX20075DATCB/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20075DATCB/V+ 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 MAX20075DATCB/V+ reliable?
The price and inventory of MAX20075DATCB/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20075DATCB/V+ is usually 5 days.
3.What payment methods are accepted for MAX20075DATCB/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20075DATCB/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20075DATCB/V+?
MAX20075DATCB/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20075DATCB/V+ 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 MAX20075DATCB/V+?
For technical support, including MAX20075DATCB/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20075DATCB/V+ requirements.
6.How does Aetrix verify that MAX20075DATCB/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20075DATCB/V+ 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 MAX20075DATCB/V+ meets industry standards.
7.What is the process for return or replacement of MAX20075DATCB/V+?
All MAX20075DATCB/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20075DATCB/V+, 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 MAX20075DATCB/V+ part is unused and in its original packaging.
Return procedure for MAX20075DATCB/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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