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Analog Devices Inc./Maxim Integrated MAX20077ATCE/VY+
- Part No.:
- MAX20077ATCE/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20077ATCE/VY+.pdf
- Description:
- IC REG BUCK ADJ 2.5A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:370
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Product details
Overview
MAX20077ATCE/VY+ 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 operates at a fixed 400kHz switching frequency, supports 1V–10V programmable output via external resistor divider, and features ±1.5% feedback accuracy and 99% maximum duty cycle for automotive dropout operation.
For engineers reviewing the MAX20077ATCE/VY+ datasheet, MAX20077ATCE/VY+ pinout, MAX20077ATCE/VY+ application, or MAX20077ATCE/VY+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade protection features (40V load-dump, -40°C to +125°C operation), and two rigorously cross-checked alternative parts for 400kHz, 2A buck applications.
Technical Context
The MAX20077ATCE/VY+ implements current-mode control with internal slope compensation and fixed 400kHz oscillator-no external synchronization required unless forced PWM mode is needed. Its 20ns minimum on-time enables direct step-down from 36V input to sub-3V outputs without cascaded stages.
It integrates a 5V bias LDO, PGOOD open-drain monitor with 92–94% threshold hysteresis, spread-spectrum enable (SPS), and thermal shutdown at 175°C with 15°C hysteresis. Protection includes overcurrent limiting at 2.9A (±12%), short-circuit recovery with 7ms soft-start retry, and 40V transient tolerance on SUP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2.0A continuous-supports automotive infotainment and ADAS modules requiring stable 2A at 5V/3.3V or adjustable rails. |
| Input Voltage Range | 3.5V to 36V-covers cold-crank (4.5V) to load-dump (40V transient) in 12V/24V automotive systems. |
| Switching Frequency | 400kHz (typ)-optimized for high efficiency and low switching loss; eliminates AM band interference. |
| Quiescent Current | 3.5µA at no load-enables always-on functionality in vehicle body control units without battery drain. |
| Output Accuracy | ±1.5% FB voltage accuracy (1.0V ±15mV)-ensures tight regulation for sensitive microcontrollers and sensors. |
| Minimum On-Time | 20ns-allows 36V-to-1.8V conversion in single stage, reducing BOM count and board space. |
| Duty Cycle Max | 99%-maintains regulation during automotive dropout conditions (e.g., engine cranking at 6V). |
| Thermal Rating | AEC-Q100 qualified, -40°C to +125°C ambient-validated for under-hood and powertrain environments. |
Pinout & Package
MAX20077ATCE/VY+ is housed in a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+3C) with exposed pad for thermal dissipation. The package supports automated optical inspection (AOI) and meets IPC-J-STD-020 moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable | Logic-high enables ±3% frequency modulation to reduce EMI peak emissions; internal 1MΩ pulldown ensures default disable. |
| 2 EN | High-voltage enable input | Accepts 0–40V logic; activates regulator when pulled >2.4V; zero leakage preserves ultra-low IQ. |
| 3 BST | Bootstrap supply for high-side gate driver | Requires 0.1µF ceramic capacitor to LX; sustains gate drive during 99% duty-cycle dropout operation. |
| 4 SUP | Main power input | 3.5–36V supply rail; requires 4.7µF ceramic bypass to PGND; withstands 40V transients. |
| 5 LX | Switch node | Connects to inductor; high dv/dt node-requires tight layout to minimize EMI and ringing. |
| 6 PGND | Power ground return | Low-impedance path for high-current switching loops; must be separated from AGND except at single-point tie. |
| 7 AGND | Analog ground reference | Reference for FB, PGOOD, SYNC, SPS; connects to PCB ground plane but isolated from noisy PGND paths. |
| 8 FB | Feedback input | Senses output via resistor divider; 1.0V ±15mV reference enables precise 1V–10V programming. |
| 9 OUT | Regulated output connection | High-current output node; bypassed with ≥44µF total effective capacitance per datasheet Table 2. |
| 10 BIAS | Internal 5V bias supply | Provides regulated 5V for internal circuitry and optional PGOOD pullup; requires 1µF ceramic to AGND. |
| 11 SYNC | Mode select/synchronization | Ground or open = skip mode; tied to BIAS = forced PWM; internal 1MΩ pulldown ensures default skip mode. |
| 12 PGOOD | Open-drain power-good indicator | Signals valid regulation (92–94% of VOUT); requires external 20kΩ pullup to BIAS or system rail. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side FETs | 70mΩ typical RDS(on) each-eliminates need for external MOSFETs and gate drivers, reducing solution size by >40%. |
| Ultra-low quiescent current | 3.5µA in standby-enables >10-year battery life in always-on telematics modules without wake-up circuitry. |
| Automotive-grade protection suite | 40V load-dump tolerance, -40°C to +125°C operation, AEC-Q100 qualification-meets ISO 7637-2 and ISO 16750-2 requirements. |
| Programmable output voltage | 1V–10V via resistor divider-supports diverse SoC core, I/O, and sensor rails without redesigning power architecture. |
| Fixed 5.5ms soft-start | Prevents inrush current during power-up-limits peak input current to <1.5× IOUT, protecting upstream fuses and switches. |
| PGOOD with accurate thresholds | 92–94% VOUT detection window-enables reliable sequencing with microcontrollers and PMICs in multi-rail systems. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power |
|---|---|
Use Scenario: Powering CAN transceivers, door lock actuators, and LED lighting drivers in centralized BCMs. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator supplying multiple downstream loads with tight voltage tolerance and fast transient response. Use Value: 99% duty cycle maintains regulation during 6V cranking events; 40V load-dump rating prevents field failures in 12V systems. |
Use Scenario: Generating isolated 3.3V logic rails for digital I/O modules in harsh industrial environments. IC Role / Device Role / Timing Role: High-reliability DC-DC stage converting 24V factory bus to clean 3.3V for FPGA configuration and communication ICs. Use Value: AEC-Q100 qualification ensures long-term stability at +85°C ambient; 400kHz operation minimizes heat rise in confined enclosures. |
| Automotive Camera Power Supply | Medical Portable Diagnostic Device |
Use Scenario: Providing noise-sensitive 1.8V core power to image signal processors (ISPs) in surround-view cameras. IC Role / Device Role / Timing Role: Low-noise, spread-spectrum-enabled buck converter delivering regulated 1.8V from 12V battery with minimal EMI coupling into analog video paths. Use Value: 20ns min on-time enables direct 12V→1.8V conversion; ±1.5% FB accuracy ensures ISP clock stability and image fidelity. |
Use Scenario: Powering ARM Cortex-M7-based patient monitoring units with battery backup and USB-C charging. IC Role / Device Role / Timing Role: Main system buck regulator supporting dynamic voltage scaling between 3.3V (active) and 1.2V (sleep) modes. Use Value: 3.5µA IQ extends battery runtime in sleep mode; programmable output allows single BOM for multiple voltage configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QRTWRQ1 | 4.5–36V input, 3.5A, 2.1MHz, 7.5µA IQ, no spread spectrum | Higher current, higher IQ, no SPS-less suitable for ultra-low-power always-on nodes | Select when >2A output or faster transient response is required; verify thermal margin at 400kHz-equivalent efficiency. |
| TPS54240DGQR | 3.5–42V input, 2.5A, 100kHz–2.7MHz adjustable, 145µA IQ, no AEC-Q100 | Wider VIN, higher IQ, non-automotive grade-requires external compensation and fails automotive qualification | Choose for cost-sensitive industrial designs where AEC-Q100 is not mandated and layout allows larger magnetics. |
Compared with LM61480QRTWRQ1 and TPS54240DGQR, the MAX20077ATCE/VY+ uniquely combines AEC-Q100 qualification, 3.5µA IQ, 400kHz efficiency optimization, and integrated spread spectrum-making it the only drop-in fit for automotive 2A rails demanding zero-battery-drain standby and EMI-compliant layout.
Availability
MAX20077ATCE/VY+ is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O power supplies, camera power systems, and portable medical diagnostics requiring stable component supply, AEC-Q100 compliance, and ultra-low quiescent current performance.
Supply support for MAX20077ATCE/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 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 conversion-delivering compact, robust, low-IQ buck regulation for infotainment, ADAS, and body electronics operating across extreme voltage and temperature ranges.
FAQ
What is the maximum output current capability of the MAX20077ATCE/VY+?
The MAX20077ATCE/VY+ delivers up to 2.0A continuous output current under recommended operating conditions (TA ≤ +125°C, proper thermal layout). Its overcurrent limit is specified at 2.9A (±12%) with automatic hiccup-mode recovery on sustained overload, ensuring reliability in automotive load-dump scenarios where the MAX20077ATCE/VY+ remains within safe operating area.
Does the MAX20077ATCE/VY+ support fixed-output voltage configurations?
Yes, the MAX20077ATCE/VY+ supports both fixed and adjustable outputs. When FB is connected directly to BIAS, it delivers factory-trimmed 5V or 3.3V. For other voltages, an external resistor divider from OUT to FB sets 1V–10V output with ±1.5% feedback accuracy-confirmed in the Electrical Characteristics table for MAX20077ATCE/VY+ under VFB = 1.0V ±15mV.
What package type and thermal characteristics does the MAX20077ATCE/VY+ use?
The MAX20077ATCE/VY+ uses a 3mm × 3mm, 12-pin side-wettable TDFN package (TD1233Y+3C) with exposed pad. Its thermal resistance is θJA = 41°C/W and θJC = 9°C/W on a four-layer board. This enables operation up to +125°C ambient with appropriate copper pour-verified in the Absolute Maximum Ratings and Thermal Protection sections of the datasheet.
How does the MAX20077ATCE/VY+ achieve ultra-low quiescent current?
The MAX20077ATCE/VY+ achieves 3.5µA quiescent current by entering standby mode automatically when load falls below ~5mA: internal circuitry (except essential regulation blocks) powers down, and the high-side FET remains off for eight consecutive clock cycles. This behavior is explicitly documented for MAX20077ATCE/VY+ in the Detailed Description section under "Achieving High Efficiency at Light Loads".
Is the MAX20077ATCE/VY+ qualified for automotive applications?
Yes, the MAX20077ATCE/VY+ is AEC-Q100 qualified for Grade 1 (-40°C to +125°C ambient), includes 40V load-dump protection, operates from 3.5V to 36V, and features thermal shutdown at 175°C with 15°C hysteresis-all confirmed in the Applications, Absolute Maximum Ratings, and Detailed Description sections of the official Analog Devices datasheet.
MAX20077ATCE/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)
MAX20077ATCE/VY+ FAQ
1.How can I place an order for MAX20077ATCE/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20077ATCE/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 MAX20077ATCE/VY+ reliable?
The price and inventory of MAX20077ATCE/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20077ATCE/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20077ATCE/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20077ATCE/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20077ATCE/VY+?
MAX20077ATCE/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20077ATCE/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 MAX20077ATCE/VY+?
For technical support, including MAX20077ATCE/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20077ATCE/VY+ requirements.
6.How does Aetrix verify that MAX20077ATCE/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20077ATCE/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 MAX20077ATCE/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20077ATCE/VY+?
All MAX20077ATCE/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20077ATCE/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 MAX20077ATCE/VY+ part is unused and in its original packaging.
Return procedure for MAX20077ATCE/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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