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Analog Devices Inc./Maxim Integrated MAX20077ATCA/VY+T
- Part No.:
- MAX20077ATCA/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20077ATCA/VY+T.pdf
- Description:
- IC REG BUCK ADJ 2.5A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:922
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Product details
Overview
MAX20077ATCA/VY+T from Analog Devices is a synchronous buck DC-DC converter with integrated high-side and low-side MOSFETs, delivering up to 2.5A output current across a 3.5V–36V input range while consuming only 3.5µA quiescent current at no load. It features fixed 2.1MHz switching frequency, ±2% output voltage accuracy in FPWM mode (5V/3.3V), and 20ns minimum on-time for high step-down ratios-enabling direct 3.3V or 5V regulation from automotive battery rails.
For engineers reviewing the MAX20077ATCA/VY+T datasheet, MAX20077ATCA/VY+T pinout, MAX20077ATCA/VY+T application, or MAX20077ATCA/VY+T 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 via spread-spectrum enable-critical for infotainment power supplies and ADAS domain controllers.
Technical Context
The MAX20077ATCA/VY+T employs current-mode control architecture with internal slope compensation, eliminating external compensation components. Its 20ns minimum on-time enables stable 3.3V output directly from 12V or 24V automotive inputs without pre-regulation stages.
It supports dual operation modes: forced PWM (FPWM) when SYNC is tied to BIAS (ensuring constant 2.1MHz switching for predictable EMI), and pulse-skipping mode when SYNC is grounded or floating (reducing quiescent current to 3.5µA at light loads). PGOOD monitoring and 99% dropout duty cycle ensure robust sequencing and cold-crank resilience.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2.5A continuous - supports demanding automotive ECUs and camera modules without external current boosting |
| Input Voltage Range | 3.5V to 36V - withstands automotive load-dump transients up to 40V and operates through cold-crank (down to 3.5V) |
| Quiescent Current | 3.5µA at no load - extends battery life in always-on vehicle systems (e.g., telematics, alarm controllers) |
| Switching Frequency | 2.1MHz (fixed) - enables use of compact 2.2µH inductors and reduces EMI in AM radio band |
| Output Accuracy | ±2% in FPWM mode (5V/3.3V) - meets tight voltage tolerance requirements for microcontroller I/O and sensor bias rails |
| Minimum On-Time | 20ns - allows direct 3.3V generation from 24V input (9.1:1 ratio) without cascaded conversion |
| Thermal Rating | −40°C to +125°C junction - qualified per AEC-Q100 Grade 1 for under-hood and dashboard applications |
Pinout & Package
MAX20077ATCA/VY+T is housed in a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+2C) with exposed thermal pad connected to PGND for enhanced heat dissipation in high-power-density automotive layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable | Logic-high enables ±3% 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 CAN-inhibit or KEY signals |
| 3 BST | Bootstrap supply for HS gate driver | Requires 0.1µF ceramic capacitor to LX; enables efficient high-side FET drive in synchronous topology |
| 4 SUP | Main power input | 3.5V–36V supply rail; requires 4.7µF ceramic bypass to PGND for stability and transient response |
| 5 LX | Switch node | Connects to inductor; high dv/dt node requiring tight layout; internal clamp diodes protect against overvoltage |
| 6 PGND | Power ground return | Low-impedance path for high-current switching loops; must be separated from AGND to minimize noise coupling |
| 7 AGND | Analog ground reference | Reference for FB, PGOOD, and internal error amplifier; connects to clean ground plane near BIAS and FB |
| 8 FB | Feedback input | 1.0V reference point; connect to BIAS for fixed 5V/3.3V outputs or to resistor divider for 1V–10V programmability |
| 9 OUT | Regulated output | Delivers 2.5A; bypass with low-ESR ceramic capacitors (≥30µF effective) for stability and ripple suppression |
| 10 BIAS | Internal 5V bias supply | Provides regulated 5V for internal circuitry; requires ≥1µF ceramic cap to AGND; used as pullup for PGOOD |
| 11 SYNC | Mode selection / synchronization input | Tied to BIAS → FPWM mode; grounded/floating → skip mode; accepts external clock (1.7–2.6MHz) for precise timing control |
| 12 PGOOD | Open-drain power-good indicator | Asserts high when VOUT is within 91–95% of nominal; requires external 20kΩ pullup; enables safe power sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates need for external MOSFETs and drivers-reduces BOM count and PCB area by >40% vs discrete solutions |
| 20ns minimum on-time | Enables single-stage 3.3V/5V generation from 24V battery, avoiding efficiency loss and complexity of two-stage designs |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C operation with 40V load-dump protection-meets OEM requirements for front-end power rails |
| PGOOD with 60µs debounce | Ensures reliable system reset signaling during startup and fault recovery; prevents false triggers from output ripple |
| Fixed 3.5ms soft-start | Controls inrush current during power-up; prevents input voltage sag and avoids overstressing input capacitors |
| 400kHz/2.1MHz selectable frequency | 2.1MHz option minimizes component size; 400kHz variant (on other variants) maximizes efficiency at full load-design flexibility per application |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
Use Scenario: Powers SoC, display interface, and audio codec in head-unit systems with wide input voltage variation (cold-crank to load-dump). IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator providing clean, sequenced power with PGOOD monitoring for MCU reset coordination. Use Value: 3.5µA IQ extends battery hold-up time during ignition-off; 2.1MHz switching avoids AM band interference in FM/AM radio reception. |
Use Scenario: Supplies image sensor and ISP in surround-view or forward-facing cameras mounted in harsh under-hood environments. IC Role / Device Role / Timing Role: High-reliability 3.3V regulator with 99% dropout capability and thermal shutdown to sustain operation during engine heat soak. Use Value: AEC-Q100 qualification and −40°C to +125°C operation ensure functional safety compliance; 40V transient tolerance prevents field failures during jump-starts. |
| Industrial IoT Gateway Power | Automotive Telematics Control Unit |
Use Scenario: Powers ARM-based gateway processor and cellular modem in battery-backed industrial edge nodes with wide-input DC sources. IC Role / Device Role / Timing Role: Efficient 5V intermediate rail generator supporting dynamic load steps from 1mA to 2.5A during LTE transmission bursts. Use Value: Pulse-skipping mode maintains >85% efficiency at 10mA load; spread-spectrum (SPS) reduces conducted EMI to meet CISPR-22 Class B limits. |
Use Scenario: Provides always-on 3.3V rail for GNSS receiver, CAN controller, and secure boot MCU in vehicle tracking units. IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter enabling >1-year battery life in disconnected state; PGOOD enables wake-from-sleep sequencing. Use Value: 3.5µA standby current meets OEM "parking mode" requirements; EN pin compatibility with 3.3V microcontrollers simplifies host control integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20077ATCC/VY+T | 2.0A output current, 65ns minimum on-time, same 2.1MHz frequency and package | Targeted for lower-power loads (e.g., body control modules); not suitable for 2.5A peak demands | Select only if load current remains ≤2.0A and 3.3V output is required with tighter VIN–VOUT margin |
| LM61480RQR | 3.5A output, 4.5V–36V input, 2.1MHz, but lacks AEC-Q100 qualification and spread-spectrum feature | Used in industrial/commercial DC-DC designs; not approved for automotive production | Consider for non-automotive applications where higher current is needed and automotive qualification is unnecessary |
Compared with MAX20077ATCC/VY+T, the MAX20077ATCA/VY+T delivers 25% higher output current and 20ns minimum on-time for wider input-output ratios; versus LM61480RQR, it provides AEC-Q100 validation and integrated EMI reduction-making it the sole choice for production automotive power rails.
Availability
MAX20077ATCA/VY+T is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, industrial IoT gateways, and telematics control units requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX20077ATCA/VY+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 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 MAX20077 family was designed specifically for automotive power management-delivering ultra-low IQ, AEC-Q100 qualification, and robust transient handling in compact packages for next-generation E/E architectures.
FAQ
What is the maximum output current rating of the MAX20077ATCA/VY+T?
The MAX20077ATCA/VY+T is rated for 2.5A continuous output current under typical conditions (TA = +25°C, 2.1MHz, 5V output). This rating is validated across the full −40°C to +125°C junction temperature range and supported by internal current-limit threshold of 3.5A (±12%) with thermal shutdown at 175°C.
Does the MAX20077ATCA/VY+T support fixed 5V and 3.3V outputs without external resistors?
Yes, the MAX20077ATCA/VY+T supports factory-trimmed fixed 5V and 3.3V outputs. To enable either, connect the FB pin directly to the BIAS pin-no external resistor divider is required. Output accuracy is ±2% in FPWM mode within the 6V–18V input range.
How does the MAX20077ATCA/VY+T achieve ultra-low quiescent current?
The MAX20077ATCA/VY+T achieves 3.5µA quiescent current by entering standby mode automatically when load current drops below ~5mA. In this state, non-essential internal circuitry is powered down while maintaining regulation via minimal bias current-ideal for always-on automotive subsystems.
Is the MAX20077ATCA/VY+T qualified for automotive applications?
Yes, the MAX20077ATCA/VY+T is AEC-Q100 qualified (Grade 1: −40°C to +125°C), includes 40V load-dump protection, and operates across 3.5V–36V input-meeting stringent OEM requirements for front-end power rails in infotainment, ADAS, and telematics systems.
What package type and thermal performance does the MAX20077ATCA/VY+T use?
The MAX20077ATCA/VY+T uses a 3mm × 3mm, 12-pin side-wettable TDFN package (TD1233Y+2C) with exposed thermal pad. Its thermal resistance is θJA = 41°C/W (four-layer board), enabling 2.5A operation without external heatsinking in typical automotive PCB layouts.
MAX20077ATCA/VY+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:
- 2.5A
- Frequency - Switching:
- 400kHz, 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-TDFN-EP (3x3)
MAX20077ATCA/VY+T FAQ
1.How can I place an order for MAX20077ATCA/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20077ATCA/VY+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 MAX20077ATCA/VY+T reliable?
The price and inventory of MAX20077ATCA/VY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20077ATCA/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20077ATCA/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20077ATCA/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20077ATCA/VY+T?
MAX20077ATCA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20077ATCA/VY+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 MAX20077ATCA/VY+T?
For technical support, including MAX20077ATCA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20077ATCA/VY+T requirements.
6.How does Aetrix verify that MAX20077ATCA/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20077ATCA/VY+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 MAX20077ATCA/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20077ATCA/VY+T?
All MAX20077ATCA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20077ATCA/VY+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 MAX20077ATCA/VY+T part is unused and in its original packaging.
Return procedure for MAX20077ATCA/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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