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Analog Devices Inc./Maxim Integrated MAX20076DATCA/V+
- Part No.:
- MAX20076DATCA/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20076DATCA/V+.pdf
- Description:
- IC REG BUCK ADJ 1.2A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:425
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Product details
Overview
MAX20076DATCA/V+ from Analog Devices is a 36V input, 1.2A synchronous buck converter with integrated high-side and low-side MOSFETs, 2.1MHz fixed switching frequency, ±2% output voltage accuracy (5V or 3.3V fixed), and 3.5µA quiescent current in standby mode - designed for automotive power rails requiring high efficiency across wide input ranges and ultra-low sleep-current operation.
For engineers reviewing the MAX20076DATCA/V+ datasheet, MAX20076DATCA/V+ pinout, MAX20076DATCA/V+ application, or MAX20076DATCA/V+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade operating parameters (−40°C to +125°C, AEC-Q100 qualified), and real-world EMI mitigation features including spread-spectrum modulation and 20ns minimum on-time for high VIN/VOUT ratios.
Technical Context
This device implements current-mode control architecture with no external compensation required, enabling stable regulation across 3.5V–36V input while maintaining 99% duty-cycle dropout capability. Its 20ns minimum on-time supports direct step-down from automotive battery (e.g., 12V→1.8V) without cascaded converters.
The IC integrates a 5V internal BIAS LDO, open-drain PGOOD monitoring, programmable spread-spectrum via SPS pin (±6% modulation), and dual-mode operation: skip mode for light-load efficiency (3.5µA IQ) and forced-PWM mode via SYNC pin for constant-frequency EMI control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports cold-crank (3.5V) and load-dump (40V transient) conditions in automotive systems |
| Output Current | 1.2A continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers directly |
| Switching Frequency | 2.1MHz (typ) - enables use of small 4.7µH inductors and 22µF ceramic output capacitors |
| Quiescent Current | 3.5µA at no load - extends battery life in always-on vehicle modules (e.g., telematics, body control) |
| Output Voltage Accuracy | ±2% for 5V/3.3V fixed outputs - ensures reliable logic-level compliance for downstream ICs |
| Minimum On-Time | 66ns (typ) - allows 12V→3.3V conversion at full 2.1MHz without pulse-skipping |
| Thermal Protection | 175°C shutdown with 15°C hysteresis - prevents thermal runaway during sustained overload |
Pinout & Package
MAX20076DATCA/V+ uses a 3mm × 3mm, 12-pin TDFN package with exposed pad (package code TD1233+2C), optimized for thermal dissipation in space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable input | Pull-high to activate ±6% frequency modulation for EMI reduction; internal 1MΩ pulldown |
| 2 EN | High-voltage enable input | Logic-compatible with 3.3V/5V MCUs or direct battery connection; no internal pullup/pulldown |
| 3 BST | Bootstrap capacitor node | Requires 0.1µF ceramic cap to LX for high-side gate drive; critical for dropout operation |
| 4 SUP | Main power input | Accepts 3.5V–36V; requires 4.7µF ceramic bypass to PGND for stability |
| 5 LX | Switch node | Connects to inductor; carries high di/dt; must be routed with minimal loop area |
| 6 PGND | Power ground | Return path for high-current switching; separate from AGND to avoid noise coupling |
| 7 AGND | Analog ground | Reference for FB, PGOOD, and internal bias; connects to PGND only at single point |
| 8 FB | Feedback input | 1.0V reference; used with resistor divider for adjustable outputs (1V–10V) or tied to BIAS for fixed 5V/3.3V |
| 9 OUT | Regulated output | Sense point for feedback; bypassed with 22µF ceramic to PGND |
| 10 BIAS | Internal 5V LDO output | Supplies internal circuitry; requires ≥1µF ceramic to AGND; powers PGOOD pullup |
| 11 SYNC | Mode selection input | Ground or open = skip mode; connect to BIAS = forced PWM; internal 1MΩ pulldown |
| 12 PGOOD | Open-drain power-good flag | Active-high signal indicating VOUT within ±6.5% of nominal; requires external 20kΩ pullup |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous FET integration | Eliminates need for external high-side/low-side MOSFETs and gate drivers - reduces BOM count and layout complexity |
| 2.1MHz fixed-frequency operation | Enables compact magnetics and low-output-ripple designs while avoiding AM radio band interference |
| 99% duty-cycle dropout mode | Maintains regulation down to VIN ≈ VOUT + 0.2V - essential for start-stop engine operation |
| AEC-Q100 qualification | Validated for automotive temperature range (−40°C to +125°C) and reliability requirements |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a transients without external TVS - simplifies front-end protection |
Applications
| Automotive Body Control Module | Industrial Sensor Hub |
|---|---|
Use Scenario: Powering MCU, LIN transceiver, and door-lock actuators in BCM under stop-start cycling and load-dump events. IC Role / Device Role / Timing Role: Primary 5V rail regulator delivering 1.2A with <3.5µA sleep current and 99% dropout to maintain MCU RTC during cranking. Use Value: Eliminates need for secondary LDO or backup battery; meets OEM quiescent current targets (<10µA system sleep). | Use Scenario: Providing stable 3.3V supply to MEMS accelerometers, pressure sensors, and RS-485 transceivers in factory-floor equipment. IC Role / Device Role / Timing Role: High-efficiency DC-DC converter handling 9–36V industrial input while rejecting conducted noise from motor drives. Use Value: 2.1MHz switching avoids interference with sensor sampling clocks; spread-spectrum reduces EMI margin testing failures. |
| Automotive Telematics Unit | Smart Rearview Mirror System |
Use Scenario: Supplying 5V to GPS module, cellular modem, and eMMC storage in always-connected vehicle infotainment. IC Role / Device Role / Timing Role: Always-on buck regulator with PGOOD monitoring for safe boot sequencing and brownout detection. Use Value: 3.5µA IQ extends battery backup runtime; AEC-Q100 qualification ensures field reliability over 15-year vehicle lifecycle. | Use Scenario: Generating 3.3V for display driver IC, ambient light sensor, and camera interface in rearview mirror with auto-dimming function. IC Role / Device Role / Timing Role: Compact 3mm×3mm regulator placed near display controller to minimize trace inductance and ripple. Use Value: 20ns min on-time supports 12V→3.3V at full 2.1MHz - avoids audible coil whine and enables thinner PCB stack-up. |
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+ | Fixed 3.3V output (vs. 5V for MAX20076DATCA/V+); identical package, pinout, and specs otherwise | Used where 3.3V logic rail is required instead of 5V; same thermal and EMI performance | Select based on target output voltage - no layout change needed between /V+ variants |
| TPS62130ARGTR | 3.0V–17V input, 3A output, 2.5MHz switching; lacks AEC-Q100 rating and 40V transient tolerance | Suitable for industrial or consumer applications without automotive qualification or load-dump stress | Choose MAX20076DATCA/V+ for automotive environments; TPS62130 for cost-sensitive non-automotive designs |
Compared with MAX20076DATCB/V+, the MAX20076DATCA/V+ provides 5V output with identical footprint and automotive robustness; versus TPS62130ARGTR, it adds AEC-Q100 qualification, 40V transient immunity, and lower quiescent current - making it the sole choice for safety-critical vehicle subsystems.
Availability
MAX20076DATCA/V+ is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor hubs, and telematics units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for MAX20076DATCA/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 with precision, reliability, and innovation.
The MAX20076D product line delivers compact, high-efficiency synchronous buck regulators specifically engineered for automotive power systems demanding ultra-low IQ, wide VIN range, and AEC-Q100 qualification.
FAQ
What is the maximum input voltage the MAX20076DATCA/V+ can withstand during load-dump events?
The MAX20076DATCA/V+ supports 40V transient input voltage per ISO 7637-2 Pulse 5a, enabling direct connection to automotive battery without external TVS diodes. This rating applies for durations up to 1 second and is validated across the full −40°C to +125°C junction temperature range. The device remains functional and undamaged during such events, ensuring robustness in harsh vehicle environments. MAX20076DATCA/V+ integrates internal protection that clamps energy without latch-up or parameter shift.
Does the MAX20076DATCA/V+ require external compensation components?
No, the MAX20076DATCA/V+ uses an internal current-mode control architecture that eliminates the need for external compensation networks. Its loop stability is factory-optimized for standard 4.7µH inductors and 22µF ceramic output capacitors. This simplifies design, reduces bill-of-materials count, and improves time-to-market. All compensation is embedded in the IC's control logic - no resistor-capacitor networks or type-II/type-III compensators are required when using recommended external components. MAX20076DATCA/V+ maintains stability across temperature, line, and load variations without user tuning.
How does the MAX20076DATCA/V+ achieve 3.5µA quiescent current?
The MAX20076DATCA/V+ achieves 3.5µA quiescent current by entering standby mode when load current drops below ~5mA: internal high-voltage LDO shuts off, most bias circuitry powers down, and only essential regulation blocks remain active. This state is automatically entered in skip mode with no load. The 3.5µA figure is measured at 14V input, 5V output, and TA = +25°C. MAX20076DATCA/V+ maintains this ultra-low IQ while retaining PGOOD monitoring and fast wake-up response - critical for automotive always-on modules.
Can the MAX20076DATCA/V+ operate in dropout, and what is its minimum dropout voltage?
Yes, the MAX20076DATCA/V+ operates in dropout with up to 99% duty cycle, enabling regulation when input voltage approaches output voltage. At 5V output, dropout occurs at VIN ≈ 5.2V (200mV headroom). During dropout, the IC pulses the low-side FET for ~200ns every 20µs to refresh the BST capacitor, sustaining gate drive for the high-side switch. This behavior is fully specified and tested across temperature. MAX20076DATCA/V+ maintains output accuracy and PGOOD assertion even in dropout - unlike many competitors that disable protection or monitoring under these conditions.
Is the MAX20076DATCA/V+ pin-compatible with other devices in the MAX20075D/MAX20076D family?
Yes, all MAX20075D/MAX20076D/MAX25276D variants share identical 12-pin TDFN pinout and footprint, including MAX20076DATCA/V+. This allows drop-in replacement across output voltages (3.3V, 5V, 3.6V, etc.) and current ratings (0.6A/1.2A) without PCB redesign. Functionally, EN, PGOOD, FB, and SYNC pins behave identically; only output voltage and current limit thresholds differ. MAX20076DATCA/V+ can be substituted for MAX20076DATCB/V+ or MAX20076EATCB/VY+ with only firmware or resistor-divider updates required.
MAX20076DATCA/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
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 10V
- Current - Output:
- 1.2A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX20076DATCA/V+ FAQ
1.How can I place an order for MAX20076DATCA/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20076DATCA/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 MAX20076DATCA/V+ reliable?
The price and inventory of MAX20076DATCA/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20076DATCA/V+ is usually 5 days.
3.What payment methods are accepted for MAX20076DATCA/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20076DATCA/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20076DATCA/V+?
MAX20076DATCA/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20076DATCA/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 MAX20076DATCA/V+?
For technical support, including MAX20076DATCA/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20076DATCA/V+ requirements.
6.How does Aetrix verify that MAX20076DATCA/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20076DATCA/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 MAX20076DATCA/V+ meets industry standards.
7.What is the process for return or replacement of MAX20076DATCA/V+?
All MAX20076DATCA/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20076DATCA/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 MAX20076DATCA/V+ part is unused and in its original packaging.
Return procedure for MAX20076DATCA/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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