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Analog Devices Inc./Maxim Integrated MAX20076ATCA/V+T
- Part No.:
- MAX20076ATCA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20076ATCA/V+T.pdf
- Description:
- IC REG BUCK PROG/1V 1.2A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,345
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Product details
Overview
MAX20076ATCA/V+T from Analog Devices is a 36V, 1.2A synchronous buck converter with integrated high-side and low-side MOSFETs, fixed 5V output (±2% accuracy), 2.1MHz switching frequency, and AEC-Q100 qualification for automotive power rails. It operates from 3.5V–36V input, supports 99% duty-cycle dropout operation, and delivers regulated 5V at up to 1.2A for engine control units and ADAS domain controllers.
For engineers reviewing the MAX20076ATCA/V+T datasheet, MAX20076ATCA/V+T pinout, MAX20076ATCA/V+T application, or MAX20076ATCA/V+T equivalent, key selection criteria include its 20ns minimum on-time for high VIN-to-VOUT ratios, spread-spectrum EMI reduction via SPS pin, PGOOD monitoring, and side-wettable 12-pin TDFN package optimized for automotive thermal and reliability requirements.
Technical Context
This current-mode-controlled buck regulator uses internal slope compensation and fixed-frequency PWM (FPWM-only operation) to achieve stable regulation across wide input ranges. Its 2.1MHz oscillator enables compact 4.7µH inductor and 22µF ceramic output capacitor designs while avoiding AM band interference.
The device integrates 300mΩ high-side and 200mΩ low-side MOSFETs, features 2.5ms internal soft-start, 40V load-dump tolerance, and thermal shutdown at 175°C with 15°C hysteresis - all validated for -40°C to +125°C ambient operation per AEC-Q100 Grade 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.2A continuous - supports automotive ECUs and camera modules without external current boosting. |
| Input Voltage Range | 3.5V to 36V - accommodates cold-crank (3.5V) and load-dump (40V transient) conditions in 12V/24V systems. |
| Fixed Output Voltage | 5.0V ±2% - factory-trimmed for precision rail generation without external feedback resistors. |
| Switching Frequency | 2.1MHz (typ) - enables small magnetics and low-output-ripple designs; immune to AM radio band (0.53–1.71MHz). |
| Minimum On-Time | 66ns - allows direct 5V regulation from 36V input (7.2:1 ratio) without cascaded conversion stages. |
| PGOOD Threshold | Rising: 93.5% of VOUT - provides accurate power-rail monitoring with 65µs debounce for noise immunity. |
| Package | 12-pin TDFN (3mm × 3mm) with side-wettable exposed pad - supports automated optical inspection (AOI) and robust thermal transfer to PCB ground plane. |
Pinout & Package
MAX20076ATCA/V+T is housed in a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+2C) with exposed thermal pad (EP) connected to PGND. The EP is not a current-carrying terminal but must be soldered to a dedicated PCB ground plane for thermal management.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SPS) | Spread-spectrum enable | Logic-high enables ±6% frequency modulation to reduce peak EMI emissions; internal 1MΩ pulldown ensures default disable. |
| 2 (EN) | High-voltage enable input | Accepts 0–36V logic; no internal pullup/pulldown - enables direct connection to automotive KEY or CAN inhibit signals. |
| 3 (BST) | Bootstrap supply for high-side gate driver | Requires 0.1µF ceramic capacitor to LX; critical for maintaining high-side FET gate drive during 99% duty-cycle dropout operation. |
| 4 (SUP) | Main power input | 3.5V–36V supply rail; requires 4.7µF low-ESR ceramic capacitor placed adjacent to pin for high-frequency decoupling. |
| 5 (LX) | Switch node | Connects to 4.7µH inductor; internal clamp diodes to PGND/AGND/SUP require careful layout to avoid exceeding power dissipation limits. |
| 6 (PGND) | Power ground return | Low-impedance path for high-current/high-frequency switching currents; must be tied to EP and output capacitor ground. |
| 7 (AGND) | Analog ground reference | Quiet ground for FB, BIAS, and SYNC; joined to PGND only at single point - typically output capacitor cathode. |
| 8 (FB) | Feedback input | 1.0V reference (±1.5% accuracy); shorted to BIAS for fixed 5V output; connects to resistor divider for adjustable outputs. |
| 9 (OUT) | Regulated output sense | Connects to output capacitor (22µF ceramic recommended); bypassed directly to PGND for stability and ripple suppression. |
| 10 (BIAS) | Internal 5V bias supply | Provides 5V for internal circuitry; requires ≥1µF ceramic capacitor to AGND; used as pullup for PGOOD and FB in fixed-output mode. |
| 11 (SYNC) | External clock synchronization | Connect to BIAS to enable internal 2.1MHz oscillator; accepts 1.7–2.6MHz external clock for system-level timing alignment. |
| 12 (PGOOD) | Open-drain power-good indicator | Active-high signal pulled low when VOUT drops below 93% nominal; requires external 20kΩ pullup to BIAS or system rail. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with integrated FETs | Eliminates external MOSFETs and drivers - reduces BOM count and board area by >30% vs discrete solutions. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation and automotive transients - meets ISO 7637-2 pulse 5a/b requirements. |
| 40V load-dump protection | Withstands 40V/1s transients without latch-up or parameter shift - enables direct battery connection without upstream TVS. |
| 99% maximum duty cycle | Enables ultra-low dropout operation (e.g., 5.5V→5V) in start-stop and cold-crank scenarios without output collapse. |
| 2.5ms internal soft-start | Prevents inrush current and output overshoot during power-up - eliminates need for external soft-start circuitry. |
| Side-wettable TDFN package | Enables automated AOI of solder joints on production lines - improves manufacturing yield and field-reliability assurance. |
Applications
| Automotive Engine Control Unit (ECU) | ADAS Camera Power Supply |
|---|---|
Use Scenario: Regulating 5V rail for microcontroller, CAN transceiver, and sensor interfaces in gasoline/diesel engine control modules. IC Role / Device Role / Timing Role: Primary DC-DC step-down regulator delivering clean, stable 5V from vehicle battery (9–16V nominal, 3.5–36V dynamic range). Use Value: 20ns minimum on-time enables direct 5V regulation from 36V load-dump events; PGOOD confirms rail integrity before MCU boot. |
Use Scenario: Powering 5V image sensor and ISP in forward-facing ADAS cameras mounted behind windshield. IC Role / Device Role / Timing Role: Compact, thermally robust buck converter supplying regulated 5V under high-temperature hood environments (-40°C to +105°C case). Use Value: Side-wettable TDFN package ensures solder-joint reliability during thermal cycling; spread-spectrum reduces EMI near RF-sensitive camera sensors. |
| Industrial PLC I/O Module | Telematics Control Unit (TCU) |
Use Scenario: Generating isolated 5V auxiliary rail for digital I/O conditioning circuits in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: High-input-voltage buck converter interfacing with 24V industrial bus, tolerant of brownouts and surges. Use Value: 3.5V UVLO threshold supports operation during 24V bus dips; 99% duty cycle maintains output during extended undervoltage events. |
Use Scenario: Providing primary 5V rail for LTE modem, GNSS receiver, and secure MCU in cellular-connected vehicle telematics units. IC Role / Device Role / Timing Role: Automotive-grade power manager handling ignition-switched 12V input and enabling fast wake-on-CAN functionality. Use Value: EN pin compatible with 3.3V logic enables direct MCU control; low quiescent current in shutdown (<1µA) extends battery life during parking mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20076ATCB/V+T | Fixed 3.3V output (±2%), identical 1.2A rating, same package and pinout. | Used where 3.3V logic rail is required instead of 5V - no changes to layout or external components needed. | Select MAX20076ATCB/V+T when powering 3.3V microcontrollers or FPGAs; shares identical thermal and EMI performance. |
| LM61480QRTWRQ1 | 1.5A output, 3.5–36V input, 2.1MHz, AEC-Q100 Grade 1, but lacks spread-spectrum and side-wettable package. | Offers higher current headroom and adjustable soft-start, but requires external EMI filtering due to no integrated spread-spectrum. | Choose LM61480QRTWRQ1 for designs needing >1.2A margin or programmable soft-start; accept larger layout footprint and added EMI mitigation. |
Compared with MAX20076ATCB/V+T, the MAX20076ATCA/V+T provides identical form-factor and reliability but targets 5V systems; versus LM61480QRTWRQ1, it trades current headroom for superior EMI control and manufacturability via side-wettable leads.
Availability
MAX20076ATCA/V+T is available at Aetrix Electronics and suitable for automotive ECU, ADAS camera, and industrial PLC applications requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for MAX20076ATCA/V+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, and communications markets since 1965.
The MAX20076 is part of Analog Devices' automotive power management portfolio, designed specifically for demanding 12V/24V vehicle subsystems requiring high efficiency, ultra-small footprint, and AEC-Q100 reliability.
FAQ
What is the maximum input voltage transient the MAX20076ATCA/V+T can withstand?
The MAX20076ATCA/V+T is rated for 40V transients per ISO 7637-2 Pulse 5a/b, with absolute maximum SUP rating of 40V for ≤1 second. This allows direct connection to automotive battery rails without upstream TVS diodes in most applications. The device remains functional and does not latch up during these events, and its 3.5V–36V normal operating range covers cold-crank and alternator load-dump conditions. MAX20076ATCA/V+T incorporates internal clamping and thermal protection to sustain repeated exposure.
Does the MAX20076ATCA/V+T support adjustable output voltages?
Yes - although MAX20076ATCA/V+T is factory-configured for fixed 5V output, it supports externally adjustable outputs from 1V to 10V using a resistor divider from OUT to FB to AGND. The FB pin has a precise 1.0V reference (±1.5% accuracy), enabling accurate programming. For fixed 5V use, simply connect FB to BIAS; for adjustable operation, omit that connection and apply the divider. MAX20076ATCA/V+T retains all protections and performance specs across the full adjustment range.
How does the spread-spectrum feature work on the MAX20076ATCA/V+T?
The MAX20076ATCA/V+T implements pin-enabled spread-spectrum frequency modulation (SSFM) via the SPS pin: pulling SPS high modulates the 2.1MHz internal oscillator by ±6%, reducing peak radiated EMI without affecting average frequency or regulation performance. SSFM is active only during FPWM operation and does not interfere with external SYNC clocking. The internal 1MΩ pulldown ensures default disable, and no external components are required to activate this feature. MAX20076ATCA/V+T maintains full output accuracy and transient response during modulation.
What is the thermal performance of the MAX20076ATCA/V+T in its side-wettable TDFN package?
The MAX20076ATCA/V+T in its 3mm × 3mm side-wettable TDFN package achieves θJA = 41°C/W and θJC = 9°C/W on a standard 4-layer JEDEC board. With proper PCB layout - including soldering the exposed pad (EP) to a large internal ground plane using ≥6 thermal vias - the device sustains 1.2A continuous output at +105°C ambient. Thermal shutdown activates at +175°C junction temperature with 15°C hysteresis, and MAX20076ATCA/V+T is rated for 95,000 hours at TJ = +125°C per automotive reliability standards.
Can the MAX20076ATCA/V+T operate in dropout mode, and how is it implemented?
Yes - MAX20076ATCA/V+T supports true dropout operation with up to 99% duty cycle, enabling regulation when input voltage approaches output voltage (e.g., 5.5V → 5V). In dropout, the high-side FET is held on continuously, and the BST capacitor is periodically refreshed every 20µs by briefly turning off the high-side and activating the low-side for ~200ns. This maintains gate drive while achieving effective >99% duty cycle and ~50kHz effective switching frequency. MAX20076ATCA/V+T sustains full 1.2A output and PGOOD assertion throughout dropout.
MAX20076ATCA/V+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:
- Programmable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 10V
- Current - Output:
- 1.2A
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX20076ATCA/V+T FAQ
1.How can I place an order for MAX20076ATCA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20076ATCA/V+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 MAX20076ATCA/V+T reliable?
The price and inventory of MAX20076ATCA/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20076ATCA/V+T is usually 5 days.
3.What payment methods are accepted for MAX20076ATCA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20076ATCA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20076ATCA/V+T?
MAX20076ATCA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20076ATCA/V+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 MAX20076ATCA/V+T?
For technical support, including MAX20076ATCA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20076ATCA/V+T requirements.
6.How does Aetrix verify that MAX20076ATCA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20076ATCA/V+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 MAX20076ATCA/V+T meets industry standards.
7.What is the process for return or replacement of MAX20076ATCA/V+T?
All MAX20076ATCA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20076ATCA/V+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 MAX20076ATCA/V+T part is unused and in its original packaging.
Return procedure for MAX20076ATCA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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