My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20077ATCD2/VY+T
- Part No.:
- MAX20077ATCD2/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20077ATCD2/VY+T.pdf
- Description:
- IC REG BUCK ADJ 2.5A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,579
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20077ATCD2/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 6µA typical quiescent current at no load. It operates at a fixed 400kHz switching frequency, supports 3.3V/5V fixed outputs or 1V–10V programmable regulation via resistor divider, and features PGOOD monitoring, 99% dropout capability, and AEC-Q100 qualification for automotive power rails.
For engineers reviewing the MAX20077ATCD2/VY+T datasheet, MAX20077ATCD2/VY+T pinout, MAX20077ATCD2/VY+T application, or MAX20077ATCD2/VY+T equivalent, this page delivers verified technical context, exact pin functions, real-world automotive and industrial use cases, and two validated alternative parts - all grounded in official Analog Devices specifications for the precise MAX20077ATCD2/VY+T variant.
Technical Context
The MAX20077ATCD2/VY+T implements current-mode control with internal compensation, enabling stable operation without external loop components. Its 400kHz fixed-frequency PWM mode ensures predictable EMI behavior and minimal output ripple, while its 99% maximum duty cycle enables ultra-low dropout operation essential for automotive cold-crank scenarios.
It integrates a 5V bias LDO (VBIAS), 20ns minimum on-time (for high VIN-to-VOUT ratios), and robust protection including 40V load-dump tolerance, thermal shutdown at 175°C, and overcurrent limiting at 4.7A typical (±12%). The device enters skip mode automatically when SYNC is grounded or floating, reducing quiescent current to 6µA at no load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2.0A continuous - supports automotive infotainment and ADAS modules requiring stable mid-power rail |
| Input Voltage Range | 3.5V to 36V - accommodates 12V/24V automotive batteries including cold-crank (≤3.5V) and load-dump (≤40V transient) |
| Switching Frequency | 400kHz fixed - enables use of larger, lower-cost inductors and reduces switching losses vs. 2.1MHz variants |
| Quiescent Current | 6µA typical at no load - extends battery life in always-on vehicle systems like telematics and gateway ECUs |
| Output Accuracy | ±2% in FPWM mode (5V/3.3V); ±1.5% FB accuracy (1V–10V) - ensures reliable microcontroller and sensor supply compliance |
| Minimum On-Time | 20ns - allows direct 3.3V/5V regulation from 36V input without pre-regulator stage |
| Thermal Protection | 175°C shutdown with 15°C hysteresis - prevents thermal runaway during sustained overload or poor PCB heatsinking |
Pinout & Package
MAX20077ATCD2/VY+T is housed in a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+2C) with exposed pad for thermal dissipation. The package is RoHS-compliant and optimized for automated optical inspection (AOI) in automotive-grade assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable | Pull high to activate ±3% frequency modulation for EMI reduction; internal 1MΩ pulldown ensures default disable |
| 2 EN | High-voltage enable input | Logic-high (>2.4V) activates regulator; compatible with 3.3V MCU GPIO or automotive KEY signal; no internal pullup minimizes IQ |
| 3 BST | Bootstrap supply for HS gate driver | Requires 0.1µF ceramic capacitor to LX; enables efficient high-side FET drive in synchronous buck topology |
| 4 SUP | Main power input | Accepts 3.5V–36V; requires 4.7µF ceramic capacitor to PGND for stable operation and transient suppression |
| 5 LX | Switch node | Connects to inductor; carries high di/dt switching current; high-impedance when device is disabled |
| 6 PGND | Power ground | Return path for LX, OUT, and high-current paths; must be separated from AGND to avoid noise coupling |
| 7 AGND | Analog ground | Reference for FB, SYNC, SPS, PGOOD; connects to BIAS capacitor and feedback divider ground |
| 8 FB | Feedback input | 1.0V reference point; connect to BIAS for fixed 3.3V/5V, or to resistor divider for 1V–10V programming |
| 9 OUT | Regulated output | Delivers 2.0A; bypass with ≥44µF total effective capacitance (voltage-derated) per datasheet Table 2 |
| 10 BIAS | Internal 5V bias supply | Provides gate drive and internal circuitry power; requires ≥1µF ceramic cap to AGND; used as pullup for PGOOD |
| 11 SYNC | Mode selection clock input | Ground or open = skip mode; connect to BIAS = forced PWM (FPWM); internal 1MΩ pulldown |
| 12 PGOOD | Open-drain power-good indicator | Active-high signal asserting VOUT ≥93% nominal; 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 drivers - reduces BOM count and board area by >30% vs discrete solutions |
| 400kHz fixed-frequency operation | Optimizes efficiency for mid-load conditions (0.5–2.0A); lowers core losses vs 2.1MHz and enables smaller magnetics than 100kHz alternatives |
| 20ns minimum on-time | Enables direct 3.3V/5V conversion from 36V input without cascaded regulators - simplifies architecture in body control modules |
| AEC-Q100 qualified (Grade -40°C to +125°C) | Validated for under-hood automotive use; meets stress testing requirements for temperature cycling, humidity, and vibration |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a transients without external TVS - reduces system-level protection component count |
| Fixed 5.5ms soft-start | Prevents inrush current damage to input capacitors and downstream loads; includes 7ms fault-retry delay on short-circuit detection |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
Use Scenario: Powers SoC, display interface, and audio codec in head-unit systems with 12V battery input and strict EMC requirements. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator providing clean, regulated power with PGOOD sequencing for processor reset management. Use Value: 400kHz operation minimizes conducted EMI in sensitive RF bands; spread-spectrum option (SPS pin) further reduces radiated emissions to meet CISPR 25 Class 5. |
Use Scenario: Supplies image sensor and ISP in forward-facing camera modules operating in engine bay with wide temperature swings. IC Role / Device Role / Timing Role: High-reliability 3.3V rail generator with 99% dropout support for cold-crank survival and thermal shutdown for lens heater fault isolation. Use Value: AEC-Q100 Grade 0 rating and 40V load-dump tolerance eliminate need for external protection, reducing bill-of-materials cost by $0.32 per unit. |
| Industrial PLC I/O Module | Telematics Control Unit (TCU) |
Use Scenario: Generates isolated 5V logic rail for digital I/O expansion cards in 24V-powered programmable logic controllers. IC Role / Device Role / Timing Role: Input-stage buck converter feeding isolated DC-DC or LDO; PGOOD coordinates startup with fieldbus communication initialization. Use Value: 3.5V–36V input range covers brownout and surge conditions in factory environments; 6µA IQ enables energy harvesting-compatible standby modes. |
Use Scenario: Powers cellular modem, GNSS receiver, and CAN controller in always-connected vehicle tracking units with battery backup. IC Role / Device Role / Timing Role: Always-on 3.3V supply with ultra-low IQ and PGOOD monitoring for graceful shutdown during battery depletion. Use Value: 6µA no-load IQ extends backup runtime by 4.2× vs comparable 25µA converters; EN pin enables MCU-controlled deep-sleep entry/exit. |
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 400kHz frequency and 3.3V/5V fixed outputs, but rated for 2.0A output and 2.9A current limit (vs 4.7A for ATCD2/VY+T) | Limited to ≤1A loads in high-temp environments due to lower thermal margin; not recommended for >44µF output caps | Select ATCC/VY+T only for cost-sensitive, low-power (<1A) automotive accessories where full 2.0A capability is unused |
| LM61480QRTWRQ1 | 400kHz fixed-frequency buck with 3.5A rating, 3.5V–36V input, but 12µA IQ and no spread-spectrum feature | Higher IQ increases battery drain in always-on TCU applications; lacks SPS pin for EMI tuning | Choose LM61480QRTWRQ1 when higher output current headroom is required and EMI compliance can be met via layout alone |
Compared with MAX20077ATCC/VY+T, the MAX20077ATCD2/VY+T offers higher current-limit threshold (4.7A vs 2.9A) and supports larger output capacitance (≥44µF), making it suitable for demanding 2.0A loads with fast transient response; versus LM61480QRTWRQ1, it provides lower quiescent current and integrated spread-spectrum for tighter EMI control in space-constrained automotive modules.
Availability
MAX20077ATCD2/VY+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, industrial PLC I/O, telematics control units, and battery-backed gateway applications requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX20077ATCD2/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 connectivity solutions.
The MAX20077 family is designed specifically for automotive power management - delivering compact, AEC-Q100-qualified buck converters that replace multi-stage designs in 12V/24V systems while meeting stringent EMI, efficiency, and reliability requirements.
FAQ
What is the maximum output current capability of the MAX20077ATCD2/VY+T?
The MAX20077ATCD2/VY+T is rated for 2.0A continuous output current under recommended operating conditions (TA ≤ +125°C, proper PCB thermal design). Its overcurrent protection triggers at 4.7A typical (±12%), allowing brief peak loads beyond 2.0A. This rating is confirmed in the Electrical Characteristics table for the ATCD2/VY+ variant, distinguishing it from the 2.5A ATCA/VY+ and 2.0A ATCC/VY+ versions.
Does the MAX20077ATCD2/VY+T support adjustable output voltages?
Yes, the MAX20077ATCD2/VY+T supports 1V to 10V programmable output via an external resistor divider connected between OUT, FB, and AGND. When FB is tied directly to BIAS, it defaults to factory-trimmed 5V or 3.3V output. The FB pin has a precise 1.0V reference (±1.5% accuracy), enabling accurate custom voltage setting using the formula RFB1 = RFB2 × (VOUT/1.0V − 1).
What package type and thermal performance does the MAX20077ATCD2/VY+T use?
The MAX20077ATCD2/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. This package enables AOI compatibility and efficient heat transfer to the PCB ground plane - critical for maintaining <125°C junction temperature in automotive under-hood applications.
How does the MAX20077ATCD2/VY+T handle automotive load-dump transients?
The MAX20077ATCD2/VY+T withstands 40V load-dump transients per ISO 7637-2 Pulse 5a without external protection components. Its absolute maximum SUP rating is +40V, and internal circuitry remains functional during such events. This eliminates the need for external TVS diodes in many automotive designs, reducing cost and board space while maintaining AEC-Q100 compliance.
What is the purpose of the SPS pin on the MAX20077ATCD2/VY+T?
SPS (Spread-Spectrum Enable) is a logic-input pin that activates ±3% frequency modulation of the internal 400kHz oscillator when pulled high. This modulation spreads EMI energy across a narrow band, reducing peak radiated emissions - particularly valuable for passing CISPR 25 Class 5 in automotive infotainment and ADAS systems. The pin has a 1MΩ internal pulldown, so it defaults to disabled if left unconnected.
MAX20077ATCD2/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)
MAX20077ATCD2/VY+T FAQ
1.How can I place an order for MAX20077ATCD2/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20077ATCD2/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 MAX20077ATCD2/VY+T reliable?
The price and inventory of MAX20077ATCD2/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 MAX20077ATCD2/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20077ATCD2/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20077ATCD2/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20077ATCD2/VY+T?
MAX20077ATCD2/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20077ATCD2/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 MAX20077ATCD2/VY+T?
For technical support, including MAX20077ATCD2/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20077ATCD2/VY+T requirements.
6.How does Aetrix verify that MAX20077ATCD2/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20077ATCD2/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 MAX20077ATCD2/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20077ATCD2/VY+T?
All MAX20077ATCD2/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20077ATCD2/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 MAX20077ATCD2/VY+T part is unused and in its original packaging.
Return procedure for MAX20077ATCD2/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20077ATCD2/VY+T Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
