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Analog Devices Inc./Maxim Integrated MAX20076DATCA/V+T
- Part No.:
- MAX20076DATCA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20076DATCA/V+T.pdf
- Description:
- IC REG BUCK ADJ 1.2A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,320
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Product details
Overview
The MAX20076DATCA/V+T 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/3.3V), and 3.5µA quiescent current in standby mode - designed for automotive power rails requiring high efficiency across wide VIN ranges including cold-crank and load-dump conditions.
For engineers reviewing the MAX20076DATCA/V+T datasheet, MAX20076DATCA/V+T pinout, MAX20076DATCA/V+T application, or MAX20076DATCA/V+T equivalent, this page delivers verified technical context, validated pin functions, confirmed AEC-Q100 qualification, real-world EMI mitigation via spread-spectrum enable, and precise selection guidance between fixed- and adjustable-output variants.
Technical Context
This device implements current-mode control with 20ns minimum on-time to support direct step-down from automotive battery (up to 36V) to sub-3V rails without cascaded conversion. Its 99% dropout duty cycle enables regulation down to VOUT = 3.3V at VIN = 3.5V, while internal 5V BIAS rail powers gate drivers and analog circuitry independently of output voltage.
The IC integrates programmable spread-spectrum modulation (±6% around 2.1MHz) on the SPS pin and dual operating modes: skip mode (SYNC grounded) for ultra-low IQ at light loads, and forced-PWM (SYNC tied to BIAS) for constant-frequency EMI control - both selectable dynamically during operation without reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports automotive cold-crank (4.5V) and load-dump (40V transient tolerance) without external protection |
| Output Current | 1.2A continuous - sufficient for ADAS camera modules, infotainment SoCs, and body-control MCUs |
| Quiescent Current | 3.5µA at no load - extends battery life in always-on vehicle subsystems (e.g., telematics wake-up circuits) |
| Switching Frequency | 2.1MHz (±6% with spread spectrum) - enables use of compact 4.7µH inductors and avoids AM radio band interference |
| Output Accuracy | ±2% for 5V/3.3V fixed outputs - ensures reliable logic-level compliance for 3.3V I/O and 5V analog peripherals |
| PGOOD Threshold | 93.5% nominal rising edge - provides precise power-rail monitoring for microcontroller reset sequencing |
| Thermal Shutdown | 175°C with 15°C hysteresis - protects against sustained overload in sealed automotive enclosures |
Pinout & Package
MAX20076DATCA/V+T uses a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+2C) with exposed thermal pad connected to PCB ground plane for enhanced thermal dissipation in high-ambient automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable input | Logic-high enables ±6% frequency dithering to reduce peak EMI emissions; internal 1MΩ pulldown ensures default disable |
| 2 EN | High-voltage enable input | Accepts 3.3V–36V logic; no internal pullup/pulldown preserves ultra-low IQ; compatible with automotive KEY/CAN inhibit signals |
| 3 BST | Bootstrap capacitor node | Requires 0.1µF ceramic cap to LX; enables high-side FET gate drive during continuous conduction and dropout operation |
| 4 SUP | Main input supply | Connects to 4.7µF ceramic capacitor to PGND; withstands 40V transients per AEC-Q100 stress testing |
| 5 LX | Switch node | Drives external 4.7µH inductor; clamped internally to PGND/SUP to limit voltage spikes during switching transitions |
| 6 PGND | Power ground return | Separate low-impedance path for high-current switching loops; must be isolated from AGND except at single-point star ground |
| 7 AGND | Analog ground reference | Reference for FB, PGOOD, and internal error amplifier; connects to 1µF bypass cap from BIAS to minimize noise coupling |
| 8 FB | Feedback input | 1.0V ±1.5% reference; used with external resistor divider for 1V–10V adjustable outputs or shorted to BIAS for fixed 5V/3.3V |
| 9 OUT | Regulated output | Bypassed with 22µF ceramic capacitor to PGND; supplies downstream logic, sensors, or communication interfaces |
| 10 BIAS | Internal 5V bias supply | Provides gate-drive and analog circuit power; requires ≥1µF ceramic cap to AGND; sourced from output in skip mode |
| 11 SYNC | Mode control/synchronization input | Ground = skip mode (low IQ); BIAS = forced PWM (constant fSW); open = skip mode; internal 1MΩ pulldown ensures safe default |
| 12 PGOOD | Open-drain power-good indicator | Active-high signal pulled low when VOUT drops below 93% 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 high-side/low-side MOSFETs and associated gate-drive components - reduces BOM count by ≥7 parts |
| 20ns minimum on-time capability | Enables direct 12V-to-2.5V conversion without pre-regulator - cuts board space and improves efficiency vs. two-stage designs |
| AEC-Q100 Grade-1 qualification (-40°C to +125°C) | Validated for under-hood automotive applications including engine control units and ADAS domain controllers |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a transients without external TVS - simplifies front-end protection design for 12V systems |
| Fixed 2.5ms soft-start | Prevents inrush current damage to input capacitors and downstream loads during power-up; restarts automatically after fault clearance |
| Programmable spread-spectrum modulation | Reduces radiated EMI peaks by >10dB in 30–1000MHz range - meets CISPR 25 Class 5 requirements without added shielding |
Applications
| Automotive Camera Power Supply | Infotainment System Core Rail |
|---|---|
Use Scenario: Powers 3.3V image sensor and ISP in rear-view or surround-view camera modules mounted in exterior housings. IC Role / Device Role / Timing Role: Primary DC-DC regulator delivering stable 3.3V at up to 1.2A from vehicle battery (9V–16V nominal, 4V–40V transient). Use Value: 3.5µA IQ extends parking-mode battery life; 20ns on-time supports direct 12V-to-3.3V conversion; AEC-Q100 ensures reliability at 105°C ambient. |
Use Scenario: Generates 5V core supply for multimedia SoCs (e.g., NXP i.MX8, Qualcomm SA8155) in head-unit and digital cluster systems. IC Role / Device Role / Timing Role: High-efficiency buck converter with PGOOD signaling for controlled SoC power sequencing and brown-out detection. Use Value: ±2% output accuracy guarantees SoC boot stability; 2.1MHz switching allows small 4.7µH inductor footprint; spread-spectrum minimizes EMI near RF receivers. |
| Body Control Module (BCM) Subsystem | Telematics Control Unit (TCU) Always-On Rail |
Use Scenario: Supplies 5V to LIN transceivers, door-lock actuators, and interior lighting drivers in centralized BCMs. IC Role / Device Role / Timing Role: Robust primary regulator handling load-dump events and cold-crank dips while maintaining 5V output. Use Value: 40V transient tolerance eliminates need for upstream TVS; 99% dropout operation sustains 5V output down to VIN = 5.05V; EN pin enables MCU-controlled power gating. |
Use Scenario: Provides always-on 3.3V rail for cellular modem, GNSS receiver, and CAN FD controller in TCU during vehicle sleep states. IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter enabling <100µA total system sleep current with fast wake-up response. Use Value: 3.5µA standby IQ directly contributes to <50µA system-level quiescent target; PGOOD enables precise wake-event validation before modem initialization. |
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+T | Fixed 3.3V output (vs. 5V for MAX20076DATCA/V+T); identical package, pinout, and electrical specs otherwise | Used where 3.3V logic rail is required instead of 5V - e.g., MCU I/O banks or low-voltage sensors | Select MAX20076DATCB/V+T only when system requires factory-trimmed 3.3V output; no layout change needed |
| MAX25276DATCA/VY+T | Higher output accuracy (±1.5% at 5.147V), optimized for 5.147V USB PD sink applications; same 12-pin TDFN package | Targeted at USB-C power delivery systems requiring precise 5.147V compliance - not suitable for generic 5V logic rails | Choose MAX25276DATCA/VY+T only for USB PD sink implementations; avoid for standard 5V microcontroller rails due to tighter tolerance mismatch |
Compared with MAX20076DATCB/V+T (3.3V variant) and MAX25276DATCA/VY+T (5.147V USB PD variant), the MAX20076DATCA/V+T offers optimal balance of 5V logic compatibility, AEC-Q100 reliability, and minimal external component count for mainstream automotive subsystems - making it the preferred choice for non-USB PD 5V applications.
Availability
MAX20076DATCA/V+T is available at Aetrix Electronics and suitable for automotive camera modules, infotainment SoC power rails, and body control module subsystems requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for MAX20076DATCA/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 connectivity solutions.
The MAX20076D belongs to Analog Devices' automotive-grade power management portfolio, engineered specifically for harsh-environment DC-DC conversion in ADAS, infotainment, and vehicle networking systems - emphasizing low IQ, high transient immunity, and AEC-Q100 compliance.
FAQ
What is the maximum input voltage rating for MAX20076DATCA/V+T, and how does it handle transients?
The MAX20076DATCA/V+T has an absolute maximum input voltage of +40V and is rated for 40V load-dump transients per ISO 7637-2 Pulse 5a. It operates continuously from 3.5V to 36V, with internal protection circuitry that maintains regulation and prevents latch-up during these events - eliminating need for external TVS diodes in most 12V automotive designs.
Does MAX20076DATCA/V+T support adjustable output voltages, or is it fixed-output only?
The MAX20076DATCA/V+T is factory-trimmed for fixed 5V output but supports adjustable outputs from 1V to 10V using an external resistor divider on the FB pin. For fixed 5V operation, FB is shorted to BIAS; for adjustable mode, a precision divider sets VOUT = 1V × (1 + R1/R2), with ±1.5% feedback accuracy over temperature.
How does the spread-spectrum feature work on MAX20076DATCA/V+T, and is it enabled by default?
Spread-spectrum modulation on the MAX20076DATCA/V+T is controlled by the SPS pin: logic-high enables ±6% frequency dithering around the nominal 2.1MHz switching frequency, reducing EMI peak emissions. The pin has a 1MΩ internal pulldown, so spread-spectrum is disabled by default unless actively pulled high - ensuring predictable startup behavior.
What thermal performance can be expected from MAX20076DATCA/V+T in a typical 4-layer PCB layout?
In a standard 4-layer PCB with 1oz copper and full thermal pad connection to internal ground plane, the MAX20076DATCA/V+T achieves θJA = 41°C/W and θJC = 9°C/W. At 1.2A load and 14V input, junction temperature rise is typically <45°C above ambient - well within the -40°C to +125°C operating range and below the 175°C thermal shutdown threshold.
Is MAX20076DATCA/V+T pin-compatible with other devices in the MAX20075D/MAX20076D family?
Yes, MAX20076DATCA/V+T shares identical 12-pin side-wettable TDFN package (TD1233Y+2C), pinout, and footprint with all members of the MAX20075D/MAX20076D/MAX25276D family - including MAX20076DATCB/V+T (3.3V), MAX20076EATCB/VY+T (enhanced version), and MAX25276DATCA/VY+T (5.147V). This enables drop-in replacement for output voltage or accuracy variants without layout changes.
MAX20076DATCA/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:
- 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+T FAQ
1.How can I place an order for MAX20076DATCA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20076DATCA/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 MAX20076DATCA/V+T reliable?
The price and inventory of MAX20076DATCA/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 MAX20076DATCA/V+T is usually 5 days.
3.What payment methods are accepted for MAX20076DATCA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20076DATCA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20076DATCA/V+T?
MAX20076DATCA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20076DATCA/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 MAX20076DATCA/V+T?
For technical support, including MAX20076DATCA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20076DATCA/V+T requirements.
6.How does Aetrix verify that MAX20076DATCA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20076DATCA/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 MAX20076DATCA/V+T meets industry standards.
7.What is the process for return or replacement of MAX20076DATCA/V+T?
All MAX20076DATCA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20076DATCA/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 MAX20076DATCA/V+T part is unused and in its original packaging.
Return procedure for MAX20076DATCA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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