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Analog Devices Inc./Maxim Integrated MAX20077ATCE2/VY+T
- Part No.:
- MAX20077ATCE2/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20077ATCE2/VY+T.pdf
- Description:
- IC REG BUCK ADJ 2.5A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,262
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Product details
Overview
MAX20077ATCE2/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 at 3.3V or 5V fixed outputs (±2% accuracy in FPWM mode), operating from 3.5V–36V input, and consuming only 3.5µA quiescent current at no load. It features 400kHz switching frequency, 99% dropout duty cycle, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX20077ATCE2/VY+T datasheet, MAX20077ATCE2/VY+T pinout, MAX20077ATCE2/VY+T application, or MAX20077ATCE2/VY+T equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade protection features (40V load-dump, thermal shutdown at 175°C), and real-world selection guidance against comparable 36V buck regulators.
Technical Context
The MAX20077ATCE2/VY+T uses current-mode control with internal compensation, enabling stable regulation without external loop components. Its 400kHz fixed-frequency operation minimizes switching losses and maximizes efficiency across 0.1mA–2.5A loads, while supporting forced PWM (FPWM) or skip mode via SYNC pin configuration.
It integrates 70mΩ high-side and 70mΩ low-side MOSFETs, supports programmable soft-start (5.5–7.5ms), and provides PGOOD monitoring with 92–94% falling/rising thresholds. The device enters 99% duty-cycle dropout at low VIN and employs BST capacitor recharging every 20µs to sustain gate drive integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports wide automotive battery transients; tolerates 40V load-dump pulses |
| Output Current | 2.5A continuous - confirmed for MAX20077ATCE2/VY+ variant per Electrical Characteristics table |
| Switching Frequency | 400kHz - enables high efficiency and low switching loss; distinct from 2.1MHz variants |
| Quiescent Current | 3.5µA at no load - ultra-low standby IQ critical for always-on automotive modules |
| Output Accuracy | ±2% in FPWM mode - guaranteed over -40°C to +125°C junction temperature range |
| Current Limit Threshold | 4.7A typical (4.1–5.3A min/max) - higher than base MAX20077ATCA/VY+, enabling robust overload handling |
| Minimum On-Time | 65ns - supports high input-to-output voltage ratios (e.g., 24V→3.3V) without pulse-skipping instability |
Pinout & Package
MAX20077ATCE2/VY+T is housed in a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+2C) with exposed pad for thermal dissipation. Pin functions are validated per official Analog Devices pin description table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable | Pull high to reduce EMI via ±3% frequency modulation; internal 1MΩ pulldown ensures default disable |
| 2 EN | High-voltage enable input | Logic-high (>2.4V) activates regulator; compatible with 3.3V MCU or automotive KEY signals; no internal pullup saves IQ |
| 3 BST | Bootstrap supply for high-side FET gate | Requires 0.1µF ceramic capacitor to LX; critical for sustaining 99% duty-cycle operation in dropout |
| 4 SUP | Main input supply rail | Accepts 3.5–36V; requires 4.7µF ceramic capacitor to PGND for transient stability and UVLO immunity |
| 5 LX | Switch node | Connects to inductor; high-impedance when disabled; clamped internally to PGND/SUP to limit voltage stress |
| 6 PGND | Power ground return | Carries high-frequency, high-current return path for LX and output capacitor; must be separated from AGND |
| 7 AGND | Analog ground reference | Reference for FB, PGOOD, and internal bias; connects to system analog ground plane only |
| 8 FB | Feedback input | 1.0V ±1.5% reference; connect to BIAS for fixed 3.3V/5V, or use resistor divider for 1–10V programmable output |
| 9 OUT | Regulated output voltage sense | Connects to output capacitor bank; bypass with ≥44µF total effective capacitance per Table 2 for stability |
| 10 BIAS | Internal 5V bias supply | Provides regulated 5V for internal circuitry and optional PGOOD pullup; requires 1µF ceramic to AGND |
| 11 SYNC | Mode control / synchronization input | Ground or open = skip mode; connect to BIAS = forced PWM; enables dynamic mode switching during operation |
| 12 PGOOD | Open-drain power-good indicator | Active-high signal asserting VOUT within 92–94% of nominal; requires external 20kΩ pullup to BIAS or system rail |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated 70mΩ/70mΩ FETs | Eliminates need for external MOSFETs and reduces board area by >40% vs discrete solutions |
| 400kHz fixed-frequency operation | Optimizes efficiency at medium-to-heavy loads; avoids AM band interference unlike lower-frequency alternatives |
| AEC-Q100 qualified (-40°C to +125°C) | Validated for under-hood automotive applications including infotainment, ADAS sensors, and body control modules |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a transients without external TVS, reducing BOM count and layout complexity |
| Programmable soft-start (5.5–7.5ms) | Prevents inrush current damage to downstream circuitry and stabilizes power sequencing in multi-rail systems |
| PGOOD with 92–94% threshold hysteresis | Enables reliable power sequencing and fault detection in safety-critical automotive subsystems |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
Use Scenario: Powers SoC, display interface, and audio codec in head-unit systems with 12V/24V battery input and strict EMC requirements. IC Role / Device Role / Timing Role: Primary 3.3V/5V step-down regulator providing clean, low-noise, and EMI-controlled power to sensitive digital ICs. Use Value: 400kHz switching + spread-spectrum option meets CISPR 25 Class 5 radiated emissions limits without added shielding or filters. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera modules exposed to engine bay temperature extremes. IC Role / Device Role / Timing Role: High-reliability buck converter maintaining stable 3.3V output during cold cranking (VIN = 3.5V) and load dump (VIN = 40V). Use Value: 99% dropout operation and -40°C to +125°C junction rating ensure uninterrupted video streaming under worst-case automotive conditions. |
| Industrial PLC I/O Module | Telematics Control Unit (TCU) |
Use Scenario: Generates isolated 5V rail for microcontroller, CAN transceiver, and analog front-end in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Input-stage DC-DC converter accepting wide-range 9–36V DC industrial input and delivering tightly regulated 5V at 2.5A. Use Value: ±2% output accuracy and 3.5µA IQ support precise analog measurements and extended battery backup runtime during mains failure. |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in vehicle telematics units requiring always-on connectivity and firmware updates. IC Role / Device Role / Timing Role: Always-on buck regulator supplying 3.3V to low-power subsystems while maintaining <5µA system sleep current. Use Value: Ultra-low 3.5µA quiescent current prevents battery drain during multi-week parking cycles, meeting OEM parasitic load specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20077ATCD2/VY+T | Same 400kHz frequency and 2.5A rating, but 7.5ms soft-start and 44µF minimum output capacitance requirement | Optimized for higher-output-capacitance designs (>60µF); less suitable for space-constrained layouts | Select MAX20077ATCD2/VY+T only if output capacitance exceeds 60µF and longer soft-start is acceptable |
| LM61480RQWR | 400kHz, 8A rating, 15µA IQ, no AEC-Q100; requires external compensation and has larger 4mm × 4mm VQFN package | Targeted at industrial/high-current applications; lacks automotive qualification and integrated spread-spectrum EMI reduction | Choose LM61480RQWR only for non-automotive, higher-current needs where AEC-Q100 and minimal footprint are not required |
Compared with MAX20077ATCD2/VY+T and LM61480RQWR, the MAX20077ATCE2/VY+T offers the optimal balance of AEC-Q100 compliance, smallest 3mm × 3mm footprint, lowest 3.5µA IQ, and integrated EMI mitigation-making it the preferred choice for space- and power-constrained automotive modules.
Availability
MAX20077ATCE2/VY+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera power, and telematics control unit applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for MAX20077ATCE2/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 timing solutions.
The MAX20077 family is designed specifically for automotive power conversion-delivering compact, efficient, and robust 36V-input buck regulation with integrated protection, AEC-Q100 qualification, and EMI-optimized operation for next-generation vehicle electronics.
FAQ
What is the maximum output current supported by the MAX20077ATCE2/VY+T?
The MAX20077ATCE2/VY+T supports up to 2.5A continuous output current, as confirmed in the Electrical Characteristics table under "High-Side Current-Limit Threshold" (4.70A typical, 4.10–5.30A min/max). This rating applies across the full -40°C to +125°C operating junction temperature range and is validated for both fixed 3.3V/5V and programmable 1V–10V configurations.
Does the MAX20077ATCE2/VY+T support fixed 3.3V or 5V output without external resistors?
Yes, the MAX20077ATCE2/VY+T supports factory-trimmed fixed outputs: connect FB directly to BIAS to select either 3.3V or 5V. Output accuracy is ±2% in FPWM mode over 6V–18V input and -40°C to +125°C, with separate validation for each voltage option in the Electrical Characteristics table.
What package type and thermal characteristics does the MAX20077ATCE2/VY+T use?
The MAX20077ATCE2/VY+T uses a 3mm × 3mm, 12-pin side-wettable TDFN package (TD1233Y+2C) with exposed pad. Its thermal resistance is θJA = 41°C/W and θJC = 9°C/W on a four-layer board, enabling operation up to +125°C ambient with proper PCB copper area and thermal vias under the exposed pad.
How does the MAX20077ATCE2/VY+T handle input voltage transients like load dump?
The MAX20077ATCE2/VY+T withstands 40V transients per ISO 7637-2 Pulse 5a without external protection, thanks to internal clamp structures on SUP and LX pins. Absolute Maximum Ratings specify SUP = -0.3V to +40V, and the device remains functional through transient events while maintaining regulation above 3.5V input.
Can the MAX20077ATCE2/VY+T operate in dropout, and what is its minimum operating input voltage?
Yes, the MAX20077ATCE2/VY+T operates in dropout down to 3.5V input, achieving up to 99% duty cycle. At VIN ≤ VOUT, it sustains regulation by turning off the high-side FET every 20µs to recharge the BST capacitor-ensuring gate drive integrity and stable output even during cold-cranking conditions.
MAX20077ATCE2/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):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 10V
- Current - Output:
- 2.5A
- Frequency - Switching:
- 400kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-TDFN-EP (3x3)
MAX20077ATCE2/VY+T FAQ
1.How can I place an order for MAX20077ATCE2/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20077ATCE2/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 MAX20077ATCE2/VY+T reliable?
The price and inventory of MAX20077ATCE2/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 MAX20077ATCE2/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20077ATCE2/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20077ATCE2/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20077ATCE2/VY+T?
MAX20077ATCE2/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20077ATCE2/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 MAX20077ATCE2/VY+T?
For technical support, including MAX20077ATCE2/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20077ATCE2/VY+T requirements.
6.How does Aetrix verify that MAX20077ATCE2/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20077ATCE2/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 MAX20077ATCE2/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20077ATCE2/VY+T?
All MAX20077ATCE2/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20077ATCE2/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 MAX20077ATCE2/VY+T part is unused and in its original packaging.
Return procedure for MAX20077ATCE2/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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