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Analog Devices Inc./Maxim Integrated MAX20076ATCB/V+
- Part No.:
- MAX20076ATCB/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20076ATCB/V+.pdf
- Description:
- IC REG BUCK PROG/1V 1.2A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
MAX20076ATCB/V+ from Analog Devices is a 36V, 1.2A synchronous buck converter with integrated high-side and low-side MOSFETs, fixed 3.3V output (±2% accuracy), 2.1MHz switching frequency, and AEC-Q100 qualification for automotive power rails. It operates from 3.5V to 36V input, supports 99% duty-cycle dropout operation, and delivers regulated 3.3V at up to 1.2A for infotainment and ADAS domain controllers.
For engineers reviewing the MAX20076ATCB/V+ datasheet, MAX20076ATCB/V+ pinout, MAX20076ATCB/V+ application, or MAX20076ATCB/V+ equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade operating parameters, and real-world design implications for high-voltage DC-DC conversion in harsh environments.
Technical Context
The MAX20076ATCB/V+ implements current-mode control with 66ns minimum on-time, enabling direct 3.3V regulation from automotive battery transients up to 40V. Its 2.1MHz fixed-frequency FPWM operation eliminates subharmonic instability and ensures no AM-band interference.
It integrates 300mΩ high-side and 200mΩ low-side MOSFETs, features programmable spread-spectrum modulation via SPS pin (±6%), and uses internal 2.5ms soft-start with PGOOD monitoring for robust power sequencing in automotive ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% over 6V–18V input range - guarantees stable logic rail for microcontrollers without external feedback resistors. |
| Max Output Current | 1.2A continuous - sufficient to power dual-core automotive MCUs and CAN transceivers simultaneously. |
| Input Voltage Range | 3.5V to 36V, with 40V load-dump tolerance - survives cold-crank (4.5V) and ISO 7637-2 pulse 5a (35V/40V). |
| Switching Frequency | 2.1MHz (typ) - enables use of 4.7µH inductor and compact 22µF ceramic output capacitor, reducing solution size by >40% vs. 500kHz converters. |
| Operating Temperature | −40°C to +125°C junction - qualified per AEC-Q100 Grade 1 for under-hood and transmission-control applications. |
| Protection Features | Thermal shutdown (175°C), overcurrent limit (1.9A typ), short-circuit recovery (7ms restart), and undervoltage lockout (2.73V) - eliminates need for external supervision circuitry. |
| PGOOD Accuracy | Rising threshold at 93.5% VOUT - provides precise power-rail validation for safety-critical boot sequencing in ASIL-B systems. |
Pinout & Package
MAX20076ATCB/V+ is housed in a 3mm × 3mm, 12-pin TDFN package with exposed pad (package code TD1233+2C), RoHS-compliant and automotive-qualified. The exposed pad must be soldered to PGND for thermal performance (θJA = 41°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable | Pull high to reduce EMI radiated emissions by ±6% frequency dither; internal 1MΩ pulldown ensures default disable. |
| 2 EN | High-voltage enable input | Logic-compatible from 0.6V to 36V - accepts direct connection to automotive KEY signal or MCU GPIO without level-shifting. |
| 3 BST | Bootstrap supply for HS 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 input supply | Accepts 3.5V–36V; requires 4.7µF ceramic decoupling placed adjacent to pin to suppress high-frequency ripple from 2.1MHz switching. |
| 5 LX | Switch node | Connects to 4.7µH inductor; internal clamp diodes to PGND/AGND/SUP require careful layout to avoid exceeding package power limits. |
| 6 PGND | Power ground return | Carries high-frequency inductor current - must be connected directly to exposed pad and output capacitor negative terminal. |
| 7 AGND | Analog ground reference | Separate quiet ground for FB, BIAS, and SYNC - joined to PGND only at single point (output capacitor cathode) to prevent noise coupling. |
| 8 FB | Feedback input | Internally tied to BIAS for fixed 3.3V mode; open for resistor-divider configuration - 1µA bias current minimizes divider power loss. |
| 9 OUT | Regulated output sense | Connects to output capacitor (22µF ceramic); bypassed to PGND - serves as voltage sensing point for regulation loop. |
| 10 BIAS | Internal 5V bias supply | Provides 5V for internal circuitry and external pullup for PGOOD; requires 1µF ceramic capacitor to AGND for stability. |
| 11 SYNC | Frequency synchronization input | Connect to BIAS to enable internal 2.1MHz clock; accepts external 1.7–2.6MHz clock for system-level timing alignment. |
| 12 PGOOD | Open-drain power-good indicator | Active-high signal pulled low when VOUT < 93% nominal - requires external 20kΩ pullup to BIAS or system rail for MCU reset assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers - reduces BOM count by 6 components and PCB area by 25mm² vs. controller-based solutions. |
| 2.1MHz fixed-frequency FPWM | Enables consistent EMI profile and predictable filter design - avoids variable-frequency skip-mode noise peaks that complicate EMC certification. |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a without external TVS - removes need for 36V-rated input capacitors and simplifies front-end protection. |
| 99% max duty cycle | Maintains regulation down to 3.5V input - supports cold-crank operation in 12V automotive systems without secondary LDO stages. |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C operation with 95,000-hour lifetime at TJ = +125°C - meets reliability requirements for powertrain and chassis modules. |
| PGOOD with 65µs debounce | Prevents false resets during transient load steps - ensures clean power-rail validation before microcontroller release from reset. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC, display interface, and audio codec in head-unit systems exposed to 12V battery fluctuations and load-dump events. IC Role / Device Role / Timing Role: Primary 3.3V buck regulator delivering 1.2A with tight line/load regulation and fast transient response. Use Value: Fixed 3.3V output eliminates resistor-divider tuning; 2.1MHz switching allows small 4.7µH inductor and 22µF ceramic cap - reduces total solution height to <1.2mm. |
Use Scenario: Supplies image sensor, ISP, and MIPI serializer in surround-view camera modules mounted near engine bay. IC Role / Device Role / Timing Role: High-reliability 3.3V source with AEC-Q100 qualification and 40V transient immunity. Use Value: 99% duty cycle sustains output during cold-crank (4.5V); PGOOD enables fail-safe sensor initialization sequence before video streaming begins. |
| Industrial PLC I/O Module | Telematics Control Unit (TCU) |
Use Scenario: Generates 3.3V rail for ARM Cortex-M7 MCU and isolated RS-485 transceivers in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Input-stage DC-DC converter accepting wide-range 9–36V DC industrial supply. Use Value: 3.5V–36V input range covers both 12V and 24V industrial buses; thermal shutdown (175°C) prevents latch-up in enclosed enclosures. |
Use Scenario: Powers LTE modem, GNSS receiver, and CAN FD controller in vehicle telematics units requiring long-term field reliability. IC Role / Device Role / Timing Role: Primary 3.3V supply with EMI-controlled 2.1MHz operation and spread-spectrum capability. Use Value: SPS pin enables ±6% frequency modulation - reduces peak radiated emissions by 10dBµV, easing CISPR 25 Class 5 compliance. |
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+ | Fixed 5V output (±2%) instead of 3.3V; identical pinout, package, and electrical specs otherwise. | Used where 5V logic rails or USB peripherals require primary regulation - not suitable for 3.3V-only SoCs without post-regulation. | Select MAX20076ATCA/V+ only when system architecture mandates 5V intermediate rail; MAX20076ATCB/V+ avoids unnecessary LDO stage for native 3.3V loads. |
| TPS62130AQRGTRQ1 | 3.0V–17V input, 3A output, 2.5MHz switching; lacks 40V load-dump rating and AEC-Q100 Grade 1 qualification. | Targeted at less demanding automotive cabin applications (e.g., HVAC controls); unsuitable for engine-bay or safety-critical domains. | Choose TPS62130AQRGTRQ1 only for cost-sensitive, non-safety applications with ≤17V input - MAX20076ATCB/V+ remains mandatory for full automotive qualification. |
Compared with MAX20076ATCA/V+, the MAX20076ATCB/V+ provides optimized 3.3V regulation without post-LDO losses; versus TPS62130AQRGTRQ1, it delivers guaranteed 40V transient immunity and full AEC-Q100 Grade 1 reliability - critical for powertrain and ADAS deployments.
Availability
MAX20076ATCB/V+ is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and industrial PLC I/O modules requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for MAX20076ATCB/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 digital signal processing semiconductors, serving automotive, industrial, and communications markets since 1965.
The MAX20075/MAX20076/MAX25276 product line was designed specifically for automotive power conversion - delivering compact, AEC-Q100-qualified buck regulators with integrated FETs, high-voltage resilience, and EMI-optimized operation.
FAQ
What is the output voltage tolerance of the MAX20076ATCB/V+ under full load and temperature range?
The MAX20076ATCB/V+ delivers a fixed 3.3V output with ±2% accuracy across the full operating input range of 6V to 18V, −40°C to +125°C junction temperature, and 0–1.2A load. This specification is production-tested and guaranteed - not just typical - ensuring reliable logic-level compatibility for automotive microcontrollers and interfaces without additional regulation.
Can the MAX20076ATCB/V+ operate during automotive cold-crank conditions?
Yes, the MAX20076ATCB/V+ supports cold-crank operation down to 3.5V input with 99% maximum duty cycle. When input drops below the regulation threshold, it maintains 3.3V output by extending on-time - validated for sustained operation at 4.5V input and full 1.2A load, meeting ISO 16750-2 requirements for 12V systems.
Does the MAX20076ATCB/V+ require external compensation components?
No, the MAX20076ATCB/V+ uses an internally compensated current-mode control architecture. It requires no external compensation network - only standard input (4.7µF ceramic), output (22µF ceramic), BST (0.1µF ceramic), and BIAS (1µF ceramic) capacitors. This simplifies design, reduces bill-of-materials, and improves production yield.
How is EMI reduced in the MAX20076ATCB/V+ without compromising efficiency?
The MAX20076ATCB/V+ integrates pin-enabled spread-spectrum modulation (SPS pin) that dithers the 2.1MHz switching frequency by ±6%, lowering peak radiated emissions by up to 10dBµV. This occurs without altering duty cycle or efficiency - unlike frequency hopping or burst mode - preserving FPWM performance while easing CISPR 25 Class 5 compliance.
What is the role of the PGOOD signal in system-level power sequencing for the MAX20076ATCB/V+?
The PGOOD signal on the MAX20076ATCB/V+ is an open-drain output that asserts high only when VOUT reaches ≥93.5% of 3.3V and remains stable. With 65µs internal debounce, it reliably signals microcontroller reset release after power stabilization - eliminating need for external supervisors in ASIL-B compliant boot sequences.
MAX20076ATCB/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:
- 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:
- 1.2A
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX20076ATCB/V+ FAQ
1.How can I place an order for MAX20076ATCB/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20076ATCB/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 MAX20076ATCB/V+ reliable?
The price and inventory of MAX20076ATCB/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20076ATCB/V+ is usually 5 days.
3.What payment methods are accepted for MAX20076ATCB/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20076ATCB/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20076ATCB/V+?
MAX20076ATCB/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20076ATCB/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 MAX20076ATCB/V+?
For technical support, including MAX20076ATCB/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20076ATCB/V+ requirements.
6.How does Aetrix verify that MAX20076ATCB/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20076ATCB/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 MAX20076ATCB/V+ meets industry standards.
7.What is the process for return or replacement of MAX20076ATCB/V+?
All MAX20076ATCB/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20076ATCB/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 MAX20076ATCB/V+ part is unused and in its original packaging.
Return procedure for MAX20076ATCB/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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