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Analog Devices Inc./Maxim Integrated MAX20077ATCA/VY+
- Part No.:
- MAX20077ATCA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20077ATCA/VY+.pdf
- Description:
- IC REG BUCK ADJ 2.5A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:602
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Product details
Overview
MAX20077ATCA/VY+ 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 operates at a fixed 2.1MHz switching frequency, supports ±2% output voltage accuracy in FPWM mode, and features PGOOD monitoring and 99% dropout duty cycle - ideal for automotive power rails requiring compact, robust 5V/3.3V or adjustable 1V–10V regulation.
For engineers reviewing the MAX20077ATCA/VY+ datasheet, MAX20077ATCA/VY+ pinout, MAX20077ATCA/VY+ application, or MAX20077ATCA/VY+ equivalent, key selection considerations include its AEC-Q100 qualification, 40V load-dump tolerance, side-wettable 12-pin TDFN package, spread-spectrum EMI reduction, and factory-trimmed 5V/3.3V output options with external resistor-divider programmability.
Technical Context
This device implements current-mode control with an internal error amplifier, slope compensation, and fixed-frequency PWM or pulse-skipping operation selectable via the SYNC pin. Its 20ns minimum on-time enables direct step-down from automotive battery to sub-3V rails without cascaded conversion.
It integrates a 5V bias LDO, undervoltage lockout (2.73V typ), thermal shutdown (175°C), overcurrent protection (3.5A typ), and open-drain PGOOD with 92–93% output threshold hysteresis - all operating across –40°C to +125°C ambient, meeting automotive reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2.5A continuous - supports automotive infotainment and ADAS modules requiring stable mid-power rail |
| Input Voltage Range | 3.5V to 36V - accommodates cold-crank (4.5V) and load-dump (40V transient) conditions per ISO 7637-2 |
| Quiescent Current | 3.5µA at no load - extends battery life in always-on vehicle systems |
| Switching Frequency | 2.1MHz (fixed) - enables use of small 2.2µH inductors and avoids AM band interference |
| Output Accuracy | ±2% in FPWM mode (5V/3.3V) - ensures reliable microcontroller and sensor supply compliance |
| Min On-Time | 65ns - allows 12V-to-1.8V conversion without external pre-regulator |
| Duty Cycle Max | 99% - sustains regulation during deep dropout (e.g., 5.5VIN→5VOUT) |
Pinout & Package
The MAX20077ATCA/VY+ is housed in a 3mm × 3mm, 12-pin side-wettable TDFN package with exposed pad (package code TD1233Y+2C), optimized for automotive thermal and solder-joint reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable | Pull-high to modulate 2.1MHz clock ±3% - reduces peak EMI emissions without affecting SYNC synchronization |
| 2 EN | High-voltage enable input | Logic-compatible from 0.6V to 36V - accepts direct connection to MCU GPIO or automotive KEY signal |
| 3 BST | Bootstrap supply for HS gate driver | Requires 0.1µF ceramic capacitor to LX - sustains gate drive during 99% duty-cycle operation |
| 4 SUP | Main input supply | Accepts 3.5V–36V with 4.7µF ceramic bypass - withstands 40V transients per load-dump test |
| 5 LX | Switch node | Connects to inductor - high dv/dt node requiring tight layout; clamped internally to PGND/SUP |
| 6 PGND | Power ground | High-current return path for LX and output capacitor - must be separated from AGND to minimize noise coupling |
| 7 AGND | Analog ground | Reference for FB, PGOOD, and internal bias - connects to clean ground plane under IC |
| 8 FB | Feedback input | 1.0V reference (±1.5% accuracy) - tied to BIAS for fixed 5V/3.3V; used with resistor divider for 1V–10V adjustment |
| 9 OUT | Regulated output | Supplies load directly - bypassed with ≥30µF effective capacitance (ceramic + polymer) per design guidelines |
| 10 BIAS | Internal 5V bias supply | Provides 5V for internal circuitry and PGOOD pullup - requires 1µF ceramic to AGND |
| 11 SYNC | Mode control / sync input | Ground = skip mode (high efficiency); BIAS = FPWM (constant frequency, better EMI); external clock accepted |
| 12 PGOOD | Open-drain power-good indicator | Active-high signal with 92–93% output threshold - requires external 20kΩ pullup to BIAS or system rail |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates need for external high-side/low-side MOSFETs and gate drivers - reduces BOM count and board area by >40% |
| AEC-Q100 qualified | Rated for automotive Grade-1 (–40°C to +125°C ambient) - validated for lifetime operation in engine bay and cockpit environments |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a (40V/200ms) without derating or external TVS - simplifies front-end protection design |
| Fixed 3.5ms soft-start | Prevents inrush current and output overshoot during power-up - includes automatic retry on short-circuit fault |
| PGOOD with hysteresis | Monitors output within ±2% window and debounces for 60µs - enables safe sequencing of downstream logic and memory |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powering SoC, display interface, and audio codec in head-unit or digital cluster with wide-input battery supply. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator providing clean, sequenced power with PGOOD confirmation. Use Value: 2.1MHz operation minimizes inductor size; 3.5µA IQ preserves battery during ignition-off; AEC-Q100 ensures field reliability. | Use Scenario: Generating 1.8V or 3.3V rail for CMOS image sensor and ISP in surround-view or forward-facing camera. IC Role / Device Role / Timing Role: Compact, high-efficiency point-of-load converter with fast transient response to sensor burst modes. Use Value: 65ns min on-time enables direct 12V-to-1.8V conversion; 99% duty cycle maintains regulation during cold-crank dips. |
| Industrial Telematics Gateway | Commercial Vehicle Body Control Unit |
Use Scenario: Powering LTE modem, GNSS receiver, and microcontroller in fleet management gateway exposed to harsh electrical environment. IC Role / Device Role / Timing Role: Robust input-stage buck converter handling 40V load-dump and reverse-battery transients. Use Value: Integrated 40V tolerance eliminates need for upstream TVS; spread-spectrum reduces conducted EMI to meet CISPR 25 Class 5. | Use Scenario: Supplying 5V rail for CAN transceivers, LIN nodes, and relay drivers in centralized body controller. IC Role / Device Role / Timing Role: High-reliability, thermally efficient DC-DC stage supporting continuous operation at elevated ambient temperatures. Use Value: 125°C ambient rating and θJA = 41°C/W enable convection-cooled designs; PGOOD enables fail-safe shutdown coordination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20077ATCD/VY+ | 400kHz switching frequency, 5.5–7.5ms soft-start, higher 7.5µA no-load IQ | Better light-load efficiency in low-power standby modes; larger inductor (10µH) required | Select when peak efficiency >90% at <100mA load is critical and board space allows larger magnetics |
| TPS54360BQDDARQ1 | 3.5–60V input, 3.5A, 100kHz–2.5MHz adjustable fSW, no integrated BST cap charge path | Lacks 99% dropout capability and side-wettable package; requires external bootstrap diode/cap | Choose for wider VIN range or programmable frequency, but expect added complexity and reduced thermal margin in automotive PCBs |
Compared with MAX20077ATCD/VY+, the MAX20077ATCA/VY+ delivers superior high-frequency performance and smaller passive components; versus TPS54360BQDDARQ1, it offers tighter integration, lower EMI, and proven AEC-Q100 reliability in space-constrained automotive modules.
Availability
MAX20077ATCA/VY+ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and industrial telematics gateways requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MAX20077ATCA/VY+ 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 system-level expertise.
The MAX20077 product line targets automotive power conversion with emphasis on ultra-low IQ, high-voltage resilience, and AEC-Q100 qualification - enabling compact, robust, and EMI-compliant DC-DC solutions for next-generation vehicle electronics.
FAQ
What output voltages does the MAX20077ATCA/VY+ support?
The MAX20077ATCA/VY+ supports factory-trimmed fixed 5V and 3.3V outputs when FB is connected to BIAS. It also supports externally adjustable 1V to 10V outputs using a resistor divider from OUT to FB to AGND, with ±1.5% feedback accuracy and 1.0V internal reference. The MAX20077ATCA/VY+ variant is specifically rated for 2.5A at these voltages.
Does the MAX20077ATCA/VY+ require external compensation components?
No, the MAX20077ATCA/VY+ uses a current-mode control architecture with internal compensation, eliminating the need for external RC networks. This simplifies design, reduces component count, and improves stability across temperature and load variations - a key advantage confirmed in the device's detailed description and application circuits.
How does the MAX20077ATCA/VY+ handle automotive load-dump transients?
The MAX20077ATCA/VY+ withstands 40V load-dump transients per ISO 7637-2 without external protection, thanks to its 40V absolute maximum rating on SUP and internal clamp structures. This capability is explicitly verified in the Absolute Maximum Ratings table and reinforced by AEC-Q100 stress testing - enabling simplified front-end design in automotive ECUs.
What is the purpose of the SPS pin on the MAX20077ATCA/VY+?
The SPS (Spread-Spectrum) pin on the MAX20077ATCA/VY+ enables optional ±3% frequency modulation of the 2.1MHz internal oscillator when pulled high, reducing peak radiated EMI without affecting functional timing or SYNC synchronization. It remains inactive when the device is externally synchronized, and its behavior is fully characterized in the Electrical Characteristics table.
Can the MAX20077ATCA/VY+ operate in dropout, and what is its minimum operating input voltage?
Yes, the MAX20077ATCA/VY+ supports dropout operation with up to 99% duty cycle, allowing regulation down to ~5.05V input for a 5V output. Its minimum specified input voltage is 3.5V, and it remains functional during cold-crank events where battery voltage dips below 6V - a capability enabled by its adaptive gate-drive and BST recharge scheme detailed in the Applications Information section.
MAX20077ATCA/VY+ 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:
- 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+ FAQ
1.How can I place an order for MAX20077ATCA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20077ATCA/VY+ 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+ reliable?
The price and inventory of MAX20077ATCA/VY+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20077ATCA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20077ATCA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20077ATCA/VY+?
MAX20077ATCA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20077ATCA/VY+ 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+?
For technical support, including MAX20077ATCA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20077ATCA/VY+ requirements.
6.How does Aetrix verify that MAX20077ATCA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20077ATCA/VY+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX20077ATCA/VY+?
All MAX20077ATCA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20077ATCA/VY+, 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+ part is unused and in its original packaging.
Return procedure for MAX20077ATCA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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