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Analog Devices Inc./Maxim Integrated MAX20076BATCB/VY+
- Part No.:
- MAX20076BATCB/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20076BATCB/VY+.pdf
- Description:
- IC REG BUCK PROG/1V 1.2A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,390
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Product details
Overview
MAX20076BATCB/VY+ from Analog Devices is a 36V, 1.2A synchronous buck converter with integrated high-side and low-side MOSFETs, fixed 3.3V output (±2% accuracy), 2.1MHz switching frequency, and AEC-Q100 qualification for automotive use. It operates from 3.5V–36V input, supports 99% duty-cycle dropout operation, and delivers regulated power in compact side-wettable 12-pin TDFN (3mm × 3mm) packaging.
For engineers reviewing the MAX20076BATCB/VY+ datasheet, MAX20076BATCB/VY+ pinout, MAX20076BATCB/VY+ application, or MAX20076BATCB/VY+ equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade operating parameters (−40°C to +125°C), spread-spectrum EMI reduction capability, and real-world design implications of its 66ns minimum on-time and PGOOD monitoring.
Technical Context
The MAX20076BATCB/VY+ implements current-mode control with internal compensation, enabling stable regulation without external loop components. Its 2.1MHz fixed-frequency FPWM operation eliminates subharmonic oscillation and ensures predictable EMI behavior - critical for automotive infotainment and ADAS subsystems.
It features a dedicated high-voltage EN input (−0.3V to VSUP + 0.3V), 40V load-dump tolerance, and thermal shutdown at 175°C with 15°C hysteresis. The device uses an internal 5V BIAS rail to drive gate drivers and supports spread-spectrum modulation via the SPS pin to reduce peak radiated emissions by ±6% around nominal frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.2A continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in automotive ECUs |
| Input Voltage Range | 3.5V to 36V - covers cold-crank (3.5V), normal battery (12V/24V), and load-dump transients (40V tolerant) |
| Fixed Output Voltage | 3.3V ±2% - matches standard logic supply requirements for MCU I/O, ADC references, and interface ICs |
| Switching Frequency | 2.1MHz (typ) - enables use of small 4.7µH inductors and 22µF ceramic output capacitors, minimizing board area |
| Minimum On-Time | 66ns (typ) - allows direct 3.3V regulation from 36V input (10.9:1 ratio) without cascaded conversion stages |
| PGOOD Accuracy | Rising threshold at 93.5% VOUT - provides precise power-rail validation before system initialization |
| Thermal Rating | AEC-Q100 Grade 1 (−40°C to +125°C ambient) - qualified for under-hood and transmission-control module environments |
Pinout & Package
MAX20076BATCB/VY+ is housed in a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+2C) with exposed pad (EP) thermally connected to PGND. The side-wettable feature enables automated optical solder-joint inspection in automotive production.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SPS | Spread-spectrum enable | Logic-high enables ±6% frequency dithering to lower peak EMI; internal 1MΩ pulldown ensures default disable |
| 2 EN | High-voltage enable | Accepts 0–36V logic; no internal pullup/pulldown - allows direct connection to automotive KEY or CAN inhibit signals |
| 3 BST | Bootstrap supply | Drives high-side FET gate; requires 0.1µF capacitor to LX for charge replenishment during 99% duty-cycle dropout |
| 4 SUP | Main power input | 3.5V–36V supply rail; requires 4.7µF ceramic decoupling placed adjacent to pin per layout guidelines |
| 5 LX | Switch node | Connects to 4.7µH inductor; internal clamp diodes to PGND/AGND/SUP require careful transient management |
| 6 PGND | Power ground return | Carries high-frequency, high-current return path for LX, SUP, and OUT - must be isolated from AGND except at single point |
| 7 AGND | Analog ground reference | Reference for FB, PGOOD, and internal error amplifier - connects to PGND only at output capacitor return |
| 8 FB | Feedback input | For fixed 3.3V output, connect directly to BIAS; for adjustable mode, use resistor divider from OUT to AGND |
| 9 OUT | Regulated output | Delivers 3.3V @ 1.2A; bypassed with 22µF ceramic capacitor to PGND for optimal phase margin (>70°) |
| 10 BIAS | Internal 5V bias rail | Supplies gate drivers and internal circuitry; requires ≥1µF ceramic capacitor to AGND for stability |
| 11 SYNC | Oscillator control | Connect to BIAS to enable internal 2.1MHz FPWM; open or pulled low disables sync function |
| 12 PGOOD | Open-drain power-good | Active-high signal pulled low when VOUT < 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 gate drivers - reduces BOM count and layout complexity for space-constrained automotive modules |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a transients without external TVS - lowers system-level surge protection cost |
| 99% max duty cycle | Enables regulation down to VIN ≈ VOUT (e.g., 3.3V out at 3.5V in), supporting cold-crank operation without backup LDO |
| 2.5ms internal soft-start | Prevents inrush current into downstream capacitance - avoids brownout during power-up of multi-rail systems |
| PGOOD with 6ms debounce | Ensures reliable power sequencing in safety-critical applications by rejecting short-duration dips caused by load transients |
| Side-wettable TDFN package | Enables AOI-compatible solder-joint inspection - meets automotive zero-defect manufacturing requirements |
Applications
| Automotive Body Control Module (BCM) | Automotive Infotainment Power Supply |
|---|---|
Use Scenario: Powers microcontroller, LIN transceivers, and LED drivers in door modules and seat controllers. IC Role / Device Role / Timing Role: Primary 3.3V DC-DC regulator delivering 1.2A with load-dump immunity and cold-crank support. Use Value: Replaces discrete buck + LDO solutions, reducing component count by 40% while meeting AEC-Q100 Grade 1 temperature and reliability requirements. | Use Scenario: Supplies 3.3V rail to audio DSP, touch controller, and display interface in head-unit designs. IC Role / Device Role / Timing Role: Fixed-output buck converter with PGOOD signaling for safe boot sequence coordination with SoC. Use Value: 2.1MHz switching minimizes conducted EMI near AM/FM bands; spread-spectrum option further suppresses radiated emissions to pass CISPR 25 Class 5. |
| Industrial Motor Drive Auxiliary Power | Commercial Telematics Unit (TCU) |
Use Scenario: Generates 3.3V for gate driver logic, position sensor interface, and communication ICs in servo drives. IC Role / Device Role / Timing Role: High-input-voltage buck converter operating from 24V DC bus with 40V transient tolerance. Use Value: 66ns minimum on-time allows direct 3.3V conversion from 24V - avoids inefficient two-stage designs and improves overall system efficiency by ~8%. | Use Scenario: Provides robust 3.3V supply to LTE modem, GNSS receiver, and CAN FD controller in vehicle telematics boxes. IC Role / Device Role / Timing Role: Automotive-qualified synchronous buck with EN-controlled sequencing and PGOOD status reporting. Use Value: AEC-Q100 qualification and −40°C to +125°C operation ensure field reliability across global deployment climates and vibration profiles. |
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+ | Same 3.3V fixed output, identical electrical specs, but in standard (non-side-wettable) TDFN package (TD1233+2C) | Lacks AOI-compatible solder joints - not recommended for new automotive production requiring IPC-A-610 Class 3 inspection | Select MAX20076ATCB/V+ only for prototyping or non-automotive industrial use where side-wettable inspection is unnecessary |
| TPS543320RTWR | 3.5V–20V input, 3A output, 2.2MHz switching, but lacks 40V load-dump rating and AEC-Q100 qualification | Not suitable for 24V commercial vehicle or passenger car applications exposed to ISO 7637-2 transients | Choose TPS543320RTWR only for cost-sensitive 12V industrial applications where automotive qualification is not required |
Compared with MAX20076ATCB/V+, MAX20076BATCB/VY+ adds side-wettable leads for automated solder-joint inspection - essential for Tier 1 automotive manufacturing. Compared with TPS543320RTWR, it trades higher current for guaranteed 40V transient survival and full AEC-Q100 compliance, making it the only viable choice for functional-safety-relevant power rails.
Availability
MAX20076BATCB/VY+ is available at Aetrix Electronics and suitable for automotive body electronics, infotainment systems, and industrial motor control applications requiring stable component supply, AEC-Q100 qualification, and side-wettable package assurance.
Supply support for MAX20076BATCB/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.
The MAX20076BATCB/VY+ belongs to Analog Devices' automotive-grade power management portfolio, designed specifically for robust, space-efficient DC-DC conversion in harsh-environment electronic control units.
FAQ
What is the output voltage configuration of the MAX20076BATCB/VY+?
The MAX20076BATCB/VY+ is factory-trimmed for fixed 3.3V output with ±2% accuracy over temperature and line. It does not support adjustable output via external resistors - that functionality is reserved for MAX20076ATCC/V+ variants. To use the fixed 3.3V mode, connect the FB pin directly to the BIAS pin as specified in the datasheet's Typical Application Circuits.
Does the MAX20076BATCB/VY+ support forced PWM (FPWM) mode only?
Yes, the MAX20076BATCB/VY+ is designed exclusively for forced PWM operation. The SYNC pin must be tied to BIAS to enable the internal 2.1MHz oscillator. Skip-mode or pulse-frequency modulation is not supported - this ensures constant switching frequency for predictable EMI performance and eliminates audible noise in sensitive automotive cabin environments.
What package type does the MAX20076BATCB/VY+ use, and why does the "Y" suffix matter?
The MAX20076BATCB/VY+ uses a 12-pin side-wettable TDFN package (outline 21-100176). The "Y" in the suffix explicitly denotes side-wettable leads, enabling automated optical inspection (AOI) of solder fillets - a mandatory requirement for automotive PCB assembly per IPC-A-610 Class 3 standards. This distinguishes it from the standard TDFN variant (e.g., MAX20076ATCB/V+).
How does the MAX20076BATCB/VY+ handle input voltage transients like load dump?
The MAX20076BATCB/VY+ withstands 40V transients for up to 1 second without damage or latch-up, complying with ISO 7637-2 Pulse 5a. Its internal circuitry clamps energy through controlled conduction paths, eliminating need for external TVS diodes in most automotive applications - simplifying design and improving long-term reliability under repeated surge events.
Can the MAX20076BATCB/VY+ operate in dropout, and what is the minimum input voltage?
Yes, the MAX20076BATCB/VY+ supports dropout operation with up to 99% duty cycle, enabling regulation when input voltage approaches output voltage. It maintains regulation down to 3.5V input - sufficient for automotive cold-crank conditions (e.g., 3.3V output at 3.5V input). In dropout, the high-side FET is held on continuously with periodic 200ns low-side pulses every 20μs to refresh the BST capacitor.
MAX20076BATCB/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 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)
MAX20076BATCB/VY+ FAQ
1.How can I place an order for MAX20076BATCB/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20076BATCB/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 MAX20076BATCB/VY+ reliable?
The price and inventory of MAX20076BATCB/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20076BATCB/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20076BATCB/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20076BATCB/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20076BATCB/VY+?
MAX20076BATCB/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20076BATCB/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 MAX20076BATCB/VY+?
For technical support, including MAX20076BATCB/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20076BATCB/VY+ requirements.
6.How does Aetrix verify that MAX20076BATCB/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20076BATCB/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 MAX20076BATCB/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20076BATCB/VY+?
All MAX20076BATCB/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20076BATCB/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 MAX20076BATCB/VY+ part is unused and in its original packaging.
Return procedure for MAX20076BATCB/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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