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Analog Devices Inc./Maxim Integrated MAX20077ATCC/VY+T
- Part No.:
- MAX20077ATCC/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20077ATCC/VY+T.pdf
- Description:
- IC REG BUCK ADJ 2A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,164
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Product details
Overview
MAX20077ATCC/VY+T from Analog Devices is a synchronous buck DC-DC converter with integrated high-side and low-side MOSFETs, delivering up to 2.0A 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 (for 5V/3.3V), and 20ns minimum on-time for high step-down ratios - enabling direct regulation of sub-3V rails from automotive battery inputs.
For engineers reviewing the MAX20077ATCC/VY+T datasheet, MAX20077ATCC/VY+T pinout, MAX20077ATCC/VY+T application, or MAX20077ATCC/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 modulation - all critical for power supply design in safety-critical automotive and industrial systems.
Technical Context
The MAX20077ATCC/VY+T employs current-mode control architecture with internal compensation, eliminating external loop components. Its 20ns minimum on-time enables stable 1.8V output from 36V input without pulse-skipping artifacts, while the 99% maximum duty cycle supports operation in dropout - essential for cold-crank automotive conditions where VIN drops below VOUT.
It integrates dual FETs with 70mΩ typical RDS(on) for both high-side and low-side switches, and uses a dedicated BIAS rail (5V) to sustain gate drive during deep dropout. The PGOOD signal provides accurate power-good monitoring with 91–95% rising threshold and 60µs debounce time in PWM mode, synchronized to the internal oscillator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2.0A continuous - validated for sustained operation under full thermal load at +125°C ambient. |
| Input Voltage Range | 3.5V to 36V - supports 12V/24V automotive systems and withstands 40V load-dump transients. |
| Quiescent Current | 3.5µA at no load - enables >10-year battery standby life in always-on automotive modules. |
| Switching Frequency | 2.1MHz (fixed) - permits use of 2.2µH inductors and compact 0805/1206 ceramic capacitors. |
| Output Voltage Accuracy | ±2% in FPWM mode (5V/3.3V) - ensures reliable microcontroller core voltage compliance across temperature. |
| Minimum On-Time | 20ns - allows direct 1.8V output from 36V input without requiring pre-regulation stages. |
| Thermal Protection | 175°C shutdown with 15°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
MAX20077ATCC/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 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable | Logic-high activates ±3% frequency dithering to reduce peak EMI emissions without affecting SYNC functionality. |
| 2 EN | High-voltage enable input | Accepts 3.3V–40V logic; no internal pullup/pulldown - enables direct connection to automotive KEY/CAN inhibit signals. |
| 3 BST | Bootstrap capacitor node | Requires 0.1µF ceramic between BST and LX to sustain high-side gate drive during 99% duty-cycle dropout operation. |
| 4 SUP | Main power input | 3.5V–36V supply rail; requires 4.7µF low-ESR ceramic capacitor to PGND for transient stability. |
| 5 LX | Switching node | Connects to inductor; high-impedance when disabled; clamped internally to PGND/SUP to limit voltage stress. |
| 6 PGND | Power ground | Low-impedance return path for LX current and high-frequency switching noise - must be separated from AGND. |
| 7 AGND | Analog ground | Reference for FB, PGOOD, and internal bias circuitry - routed separately to minimize noise coupling into regulation loop. |
| 8 FB | Feedback input | 1.0V reference point; connects to resistor divider for 1V–10V programmable outputs or to BIAS for fixed 3.3V/5V. |
| 9 OUT | Regulated output | Delivers 2.0A; bypassed with ≥44µF effective capacitance (voltage-derated) for phase margin >60°. |
| 10 BIAS | Internal 5V bias supply | Powers internal circuitry and serves as pullup for PGOOD; requires ≥1µF ceramic capacitor to AGND. |
| 11 SYNC | Mode control/synchronization | Ground or open = skip mode; tied to BIAS = forced-PWM; accepts external clock for precise EMI control. |
| 12 PGOOD | Open-drain power-good | Active-high signal indicating VOUT within ±8% of nominal; requires external 20kΩ pullup to BIAS or system rail. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers - reduces BOM count by ≥6 components and board area by >40% vs discrete solutions. |
| AEC-Q100 qualified (Grade -40°C to +125°C) | Validated for automotive powertrain, ADAS, and infotainment systems requiring zero field failures over 15-year service life. |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a transients without external TVS - simplifies front-end protection design in 24V commercial vehicles. |
| Fixed 3.5ms soft-start | Prevents inrush current damage to input capacitors and downstream loads during cold-start sequences. |
| Spread-spectrum modulation (SPS pin) | Reduces peak radiated emissions by >10dB in 30–1000MHz band - meets CISPR 25 Class 5 without added shielding or ferrites. |
| 99% maximum duty cycle | Enables uninterrupted operation during automotive cold-crank events where VIN drops to 3.5V while maintaining regulated VOUT. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Rail |
|---|---|
Use Scenario: Powering microcontrollers, CAN transceivers, and sensor interfaces in door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary 3.3V/5V buck regulator supplying core logic and communication peripherals. Use Value: 3.5µA quiescent current extends battery life during vehicle sleep mode; 40V load-dump tolerance eliminates need for external TVS diodes. |
Use Scenario: Generating isolated 5V rails for digital I/O expansion cards in modular automation systems. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter stepping down 24V field power to clean 5V logic supply. Use Value: 2.1MHz switching enables compact 1206-size magnetics and <10mm² total solution size - critical for dense backplane designs. |
| Automotive Infotainment Head Unit | High-Voltage DC-DC Converter Stage |
Use Scenario: Supplying 1.8V core voltage to application processors and DDR memory in head units with display backlight drivers. IC Role / Device Role / Timing Role: Secondary buck stage regulating low-voltage rails from primary 5V/3.3V supplies. Use Value: 20ns minimum on-time allows direct 1.8V generation from 12V battery - avoids inefficient two-stage conversion and associated losses. |
Use Scenario: Providing stable 5V auxiliary power from 48V mild-hybrid battery systems in next-gen EV architectures. IC Role / Device Role / Timing Role: Input-stage buck converter handling wide VIN range (12V–60V) before secondary regulation. Use Value: 36V absolute max input rating plus 40V transient tolerance ensures robustness against regenerative braking spikes and system-level overvoltage events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20077ATCA/VY+T | 2.5A rated output current; 65ns minimum on-time; same 2.1MHz frequency and package. | Preferred for higher-current loads (e.g., multi-core MCU domains); requires larger inductor (4.7µH) and output capacitance (30µF). | Select when >2.0A continuous load is required and board space allows larger magnetics. |
| LM61480QRTWRQ1 | 3.5A output; 4.5V–36V input; 2.1MHz fixed frequency; AEC-Q100 Grade 1; different pinout and no spread-spectrum. | Better suited for single-rail 5V/3.3V distribution in ADAS ECUs; lacks SPS pin for EMI tuning. | Choose when higher current headroom and TI's automotive support ecosystem are prioritized over EMI flexibility. |
Compared with MAX20077ATCA/VY+T, the MAX20077ATCC/VY+T trades 0.5A output capability for tighter 20ns on-time and optimized 44µF output capacitance requirement - making it superior for space-constrained 1.8V–3.3V rails. Against LM61480QRTWRQ1, it offers unique spread-spectrum control but lower current rating and distinct thermal pad layout.
Availability
MAX20077ATCC/VY+T is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, and high-voltage DC-DC converter stages requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant performance.
Supply support for MAX20077ATCC/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 power management semiconductors, serving automotive, industrial, communications, and healthcare markets with precision power and signal chain solutions.
The MAX20077 family was designed specifically for automotive power systems requiring ultra-low IQ, wide input range, and AEC-Q100 qualification - targeting body control, infotainment, and ADAS subsystems where reliability and EMI robustness are non-negotiable.
FAQ
What is the maximum output current rating for the MAX20077ATCC/VY+T?
The MAX20077ATCC/VY+T is rated for 2.0A continuous output current across its full operating temperature range (−40°C to +125°C). This value is validated under worst-case thermal conditions with proper PCB copper pour and the recommended 3mm × 3mm side-wettable TDFN layout. Peak current limit is 2.9A ±12%, providing margin for transient loads without triggering foldback.
Does the MAX20077ATCC/VY+T support fixed 3.3V or 5V output without external resistors?
Yes, the MAX20077ATCC/VY+T supports factory-trimmed fixed 3.3V and 5V outputs. To use either, connect the FB pin directly to the BIAS pin (Pin 10). No external resistor divider is needed. Output accuracy is ±2% in forced-PWM mode within the 6V–18V input range, and the device maintains this specification across automotive temperature extremes.
How does the spread-spectrum feature work on the MAX20077ATCC/VY+T?
The MAX20077ATCC/VY+T implements spread-spectrum modulation via the SPS pin (Pin 1). When pulled high, it dithers the internal 2.1MHz oscillator frequency by ±3% to reduce peak radiated emissions in the 30–1000MHz band. This feature operates independently of SYNC and remains active only when the device uses its internal clock - not during external synchronization.
What is the minimum recommended output capacitance for the MAX20077ATCC/VY+T?
The minimum effective output capacitance for the MAX20077ATCC/VY+T is 44µF, specified after voltage derating of X7R/X5R ceramics. This value ensures >60° phase margin and stable regulation under full 2.0A load. For loads <1A and input voltages between 6V and 18V, 24µF effective capacitance is acceptable per datasheet Note on page 14.
Is the MAX20077ATCC/VY+T qualified for automotive applications?
Yes, the MAX20077ATCC/VY+T is AEC-Q100 qualified (Grade 1: −40°C to +125°C ambient) and designed for automotive use. It includes 40V load-dump protection, 99% dropout operation, and thermal shutdown at 175°C - meeting requirements for body electronics, infotainment, and ADAS subsystems where long-term reliability under harsh conditions is mandatory.
MAX20077ATCC/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:
- 2A
- 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)
MAX20077ATCC/VY+T FAQ
1.How can I place an order for MAX20077ATCC/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20077ATCC/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 MAX20077ATCC/VY+T reliable?
The price and inventory of MAX20077ATCC/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 MAX20077ATCC/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20077ATCC/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20077ATCC/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20077ATCC/VY+T?
MAX20077ATCC/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20077ATCC/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 MAX20077ATCC/VY+T?
For technical support, including MAX20077ATCC/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20077ATCC/VY+T requirements.
6.How does Aetrix verify that MAX20077ATCC/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20077ATCC/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 MAX20077ATCC/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20077ATCC/VY+T?
All MAX20077ATCC/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20077ATCC/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 MAX20077ATCC/VY+T part is unused and in its original packaging.
Return procedure for MAX20077ATCC/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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