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Analog Devices Inc./Maxim Integrated MAX20077ATCE/VY+T
- Part No.:
- MAX20077ATCE/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20077ATCE/VY+T.pdf
- Description:
- IC REG BUCK ADJ 2.5A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,080
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Product details
Overview
MAX20077ATCE/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 operates at a fixed 400kHz switching frequency, supports 3.0V–10V programmable output via external resistor divider (±1.5% FB accuracy), and features PGOOD monitoring, 99% dropout duty cycle, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX20077ATCE/VY+T datasheet, MAX20077ATCE/VY+T pinout, MAX20077ATCE/VY+T application, or MAX20077ATCE/VY+T equivalent, key selection criteria include its 400kHz/2.1MHz dual-frequency option, ±1.5% feedback accuracy for adjustable outputs, 20ns minimum on-time capability enabling direct 3.3V-to-1.8V conversion from automotive battery, and side-wettable TDFN package for automated optical inspection.
Technical Context
This device uses current-mode control architecture with internal slope compensation and fixed soft-start (5.5–7.5ms) to ensure stable startup under varying load and input conditions. Its 400kHz operation minimizes switching losses and maximizes efficiency in medium-load industrial and automotive applications, while the 99% maximum duty cycle enables ultra-low dropout regulation during cold-crank events.
The IC integrates a 5V bias LDO, high-voltage EN input (compatible with 3.3V logic and battery rails), and open-drain PGOOD with 92–94% falling threshold. Spread-spectrum modulation (enabled via SPS pin) reduces EMI emissions by ±3% frequency dithering when operating at its internal 400kHz oscillator - independent of external SYNC clocking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2.0A continuous - sufficient for powering ADAS sensors, infotainment SoCs, and CAN transceivers from 12V/24V systems. |
| Input Voltage Range | 3.5V to 36V - covers full automotive battery range including cold-crank (4.5V) and load-dump (40V transient tolerance). |
| Switching Frequency | 400kHz typical - optimized for high efficiency at medium loads; enables use of larger, lower-cost inductors (10µH) and reduced core loss. |
| Quiescent Current | 3.5µA at no load - extends battery life in always-on vehicle modules such as telematics and alarm controllers. |
| Output Voltage Accuracy | ±1.5% FB voltage (1.0V ±15mV) - ensures tight regulation for sensitive analog and digital loads without trimming. |
| Minimum On-Time | 20ns - allows direct step-down from 12V to 1.8V (6.7:1 ratio) without requiring pre-regulator stages. |
| Thermal Protection | 175°C shutdown with 15°C hysteresis - prevents thermal runaway in enclosed automotive ECUs and industrial enclosures. |
Pinout & Package
MAX20077ATCE/VY+T is housed in a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+3C) with exposed thermal pad connected to PCB ground plane for enhanced thermal dissipation (θJA = 41°C/W on 4-layer board).
| 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 0–40V logic; no internal pullup/pulldown preserves ultra-low IQ; compatible with microcontroller GPIO or automotive KEY signals. |
| 3 BST | Bootstrap supply for high-side gate driver | Requires 0.1µF ceramic capacitor to LX; enables efficient 100% duty-cycle operation during dropout. |
| 4 SUP | Main input supply | 3.5–36V input rail; requires 4.7µF ceramic capacitor to PGND for stable operation and transient suppression. |
| 5 LX | Switch node | Connects to inductor; high dv/dt node - layout critical for EMI and efficiency; clamped internally to PGND/SUP. |
| 6 PGND | Power ground | Return path for high-current switching paths; must be separated from AGND and tied at single point near EXPOSED PAD. |
| 7 AGND | Analog ground | Reference for FB, PGOOD, and internal error amplifier; connects to clean ground plane under IC body. |
| 8 FB | Feedback input | Senses output via resistor divider; 1.0V reference enables precise 3.0–10V programmable outputs (±1.5% accuracy). |
| 9 OUT | Regulated output | Delivers up to 2.0A; bypassed with low-ESR ceramic capacitors (44µF recommended); connects to inductor and load. |
| 10 BIAS | Internal 5V bias supply | Provides gate drive and internal circuitry power; requires ≥1µF ceramic cap to AGND; used to set fixed 5V/3.3V outputs. |
| 11 SYNC | Mode select/synchronization | Ground or open = skip mode; connect to BIAS = forced PWM; accepts external clock (325–500kHz) for system synchronization. |
| 12 PGOOD | Open-drain power-good indicator | Active-high signal pulled low when VOUT drops below 92% nominal; requires external 20kΩ pullup to BIAS or system rail. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side FETs | 70–125mΩ RDS(on) each - eliminates external MOSFETs and gate drivers, reducing BOM count and board area by >30% vs discrete solutions. |
| Programmable output (1V–10V) | ±1.5% FB accuracy with 1.0V reference - enables precise rail generation for diverse processors, ADCs, and RF front-ends without custom trimming. |
| 400kHz fixed-frequency operation | Optimized for peak efficiency at 0.5–2.0A loads - achieves >92% efficiency at 1A/5V with 10µH inductor, minimizing heat rise in sealed enclosures. |
| AEC-Q100 Grade-1 qualification | -40°C to +125°C ambient operation - validated for engine bay, transmission control, and ADAS camera modules per automotive reliability standards. |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a transients - eliminates need for external TVS diodes in 12V/24V automotive designs. |
| Side-wettable TDFN package | 3mm × 3mm footprint with solderable flank plating - enables automated AOI inspection and improves solder joint reliability in high-vibration environments. |
Applications
| Automotive Camera Module | Industrial PLC I/O Power |
|---|---|
|
Use Scenario: Powers image sensor, ISP, and MIPI interface in rear-view or surround-view cameras mounted in bumper or mirror housings. IC Role / Device Role / Timing Role: Primary 3.3V/1.8V buck regulator supplying noise-sensitive analog and digital domains with PGOOD sequencing. Use Value: 3.5µA IQ extends battery-backed recording time; 40V transient tolerance survives jump-start events; side-wettable package resists vibration-induced solder fatigue. |
Use Scenario: Generates isolated 5V and 3.3V rails for digital I/O expansion modules in factory automation controllers. IC Role / Device Role / Timing Role: Secondary DC-DC stage converting 24V field bus to logic-level supplies with precise soft-start timing (5.5–7.5ms). Use Value: 99% dropout operation maintains output during brownouts; 400kHz frequency avoids interference with 4–20mA loop frequencies; AEC-Q100 grade ensures long-term reliability. |
| Telematics Control Unit (TCU) | Automotive Infotainment Display |
|
Use Scenario: Supplies 3.3V to cellular modem, GNSS receiver, and CAN FD controller in always-on vehicle connectivity units. IC Role / Device Role / Timing Role: Always-on buck converter with EN-controlled wake-up and PGOOD-monitored power sequencing. Use Value: Ultra-low 3.5µA standby current prevents parasitic battery drain over weeks of parking; spread-spectrum (SPS) reduces radiated emissions in crowded RF environments. |
Use Scenario: Provides 5V rail to LCD backlight driver and touch controller in center-stack displays subject to wide temperature swings. IC Role / Device Role / Timing Role: High-efficiency mid-power regulator operating across -40°C to +85°C ambient with thermal foldback. Use Value: 400kHz switching enables compact 10µH inductor; 175°C thermal shutdown protects against display bezel overheating; 3.5V–36V input handles stop-start cycling. |
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 | Same 3.3V/5V fixed-output variants; identical 400kHz frequency and 2.0A rating; differs only in factory-trimmed output voltage (3.3V vs programmable). | Used where fixed 3.3V output is required without external resistors - simplifies design but sacrifices flexibility. | Select MAX20077ATCC/VY+T if output voltage is fixed at 3.3V and board space for FB divider is constrained. |
| MPQ4420AGL-A-Z | Monolithic 2A buck with 3.3–36V input, but 500kHz fixed frequency, no spread spectrum, and only 150°C max junction temp (non-AEC-Q100). | Suitable for industrial controls but not qualified for automotive under-hood use; lacks PGOOD debounce and load-dump robustness. | Choose MPQ4420AGL-A-Z for cost-sensitive non-automotive applications where AEC-Q100 and 40V transient immunity are not required. |
Compared with MAX20077ATCC/VY+T, the MAX20077ATCE/VY+T offers full 1V–10V programmability and higher thermal margin (175°C vs 150°C), while MPQ4420AGL-A-Z trades automotive qualification and EMI features for lower unit cost in commercial-grade systems.
Availability
MAX20077ATCE/VY+T is available at Aetrix Electronics and suitable for automotive camera modules, industrial PLC I/O power supplies, telematics control units, and infotainment display subsystems requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX20077ATCE/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, Inc. 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 and industrial DC-DC conversion - emphasizing ultra-low IQ, AEC-Q100 compliance, wide VIN range, and robust transient handling in compact side-wettable packages.
FAQ
What output voltage options does the MAX20077ATCE/VY+T support?
The MAX20077ATCE/VY+T supports fully programmable output voltages from 1.0V to 10.0V using an external resistor divider connected to the FB pin, with ±1.5% feedback accuracy. It does not include factory-trimmed fixed outputs like 3.3V or 5V - those are implemented in other variants such as MAX20077ATCC/VY+T. The 1.0V internal reference enables precise rail generation for modern low-voltage processors and sensors.
Does the MAX20077ATCE/VY+T support forced PWM (FPWM) mode?
Yes, the MAX20077ATCE/VY+T supports forced PWM mode via the SYNC pin: connecting SYNC to BIAS forces continuous switching at 400kHz, eliminating low-frequency beat notes and improving EMI predictability. In skip mode (SYNC grounded or floating), it enters pulse-skipping below ~600mA load to maintain 3.5µA quiescent current. Both modes are dynamically switchable during operation.
What is the minimum on-time specification for the MAX20077ATCE/VY+T and why does it matter?
The MAX20077ATCE/VY+T has a guaranteed 20ns minimum on-time, enabling direct step-down from 12V input to 1.8V output (6.7:1 ratio) without requiring a pre-regulator stage. This capability eliminates two-stage buck architectures in automotive ADAS and infotainment systems, reducing component count, board area, and power loss - especially critical for space-constrained camera modules and domain controllers.
How is thermal performance managed in the MAX20077ATCE/VY+T?
The MAX20077ATCE/VY+T incorporates thermal shutdown at 175°C (typical) with 15°C hysteresis, automatically disabling the IC until junction temperature falls below 160°C before restarting soft-start. Its 3mm × 3mm side-wettable TDFN package delivers θJA = 41°C/W on a 4-layer board, and the exposed pad must be soldered to a solid ground plane for optimal heat transfer - essential for sustained 2.0A operation in sealed automotive enclosures.
Can the MAX20077ATCE/VY+T withstand automotive load-dump transients?
Yes, the MAX20077ATCE/VY+T is rated for 40V absolute maximum input voltage and explicitly designed to survive ISO 7637-2 Pulse 5a load-dump transients common in 12V and 24V automotive systems. Its internal circuitry clamps and routes excess energy safely, eliminating the need for external TVS diodes in most implementations - verified per AEC-Q100 stress testing and widely deployed in production telematics and ADAS modules.
MAX20077ATCE/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)
MAX20077ATCE/VY+T FAQ
1.How can I place an order for MAX20077ATCE/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20077ATCE/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 MAX20077ATCE/VY+T reliable?
The price and inventory of MAX20077ATCE/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 MAX20077ATCE/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20077ATCE/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20077ATCE/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20077ATCE/VY+T?
MAX20077ATCE/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20077ATCE/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 MAX20077ATCE/VY+T?
For technical support, including MAX20077ATCE/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20077ATCE/VY+T requirements.
6.How does Aetrix verify that MAX20077ATCE/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20077ATCE/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 MAX20077ATCE/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20077ATCE/VY+T?
All MAX20077ATCE/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20077ATCE/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 MAX20077ATCE/VY+T part is unused and in its original packaging.
Return procedure for MAX20077ATCE/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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