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Analog Devices Inc./Maxim Integrated MAX20076DATCB/V+
- Part No.:
- MAX20076DATCB/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX20076DATCB/V+.pdf
- Description:
- IC REG BUCK ADJ/3V 1.2A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,504
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Product details
Overview
The MAX20076DATCB/V+ from Analog Devices is a 36V input, 1.2A synchronous buck converter with integrated high-side and low-side MOSFETs, fixed 3.3V output, ±2% output accuracy (6V–18V input), 2.1MHz switching frequency, and 3.5µA quiescent current in standby mode-designed for automotive power rails requiring high efficiency at light loads and robust load-dump tolerance.
For engineers reviewing the MAX20076DATCB/V+ datasheet, MAX20076DATCB/V+ pinout, MAX20076DATCB/V+ application, or MAX20076DATCB/V+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade operating range (−40°C to +125°C), AEC-Q100 qualification status, and real-world EMI mitigation via spread-spectrum enable (SPS pin) and forced-PWM/skip-mode control.
Technical Context
This current-mode-controlled buck regulator uses internal slope compensation and requires no external loop compensation. It supports dropout operation up to 99% duty cycle and features a 20ns minimum on-time (for 3.3V output directly from 12V/24V battery), enabling single-stage conversion without pre-regulation.
Its dual-mode operation-skip mode (SYNC grounded/unconnected) for ultra-low IQ at light loads, and forced-PWM (SYNC tied to BIAS) for constant-frequency EMI control-is managed by dedicated logic with internal 1MΩ pulldown on SYNC and SPS pins. PGOOD monitoring and 40V load-dump protection are integrated for automotive system-level reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V continuous; withstands 40V transients-enables direct connection to automotive battery without external TVS or pre-DC/DC stage. |
| Output Current | 1.2A continuous-supports microcontroller cores, CAN transceivers, and sensor clusters in ADAS and body electronics. |
| Output Voltage | Fixed 3.3V ±2% over 6V–18V input range-eliminates external feedback resistors and reduces BOM count for standard logic rail. |
| Quiescent Current | 3.5µA at no load in standby-extends battery life in always-on vehicle modules (e.g., telematics, alarm systems). |
| Switching Frequency | 2.1MHz typical-permits use of compact 4.7µH inductors and 22µF ceramic output capacitors, minimizing solution footprint. |
| Minimum On-Time | 66ns (typ)-enables stable 3.3V output from 24V input (9.2% duty cycle), avoiding pulse-skipping instability at high VIN/VOUT ratios. |
| Thermal Protection | 175°C junction shutdown with 15°C hysteresis-ensures safe operation under sustained overload or poor PCB thermal design. |
Pinout & Package
MAX20076DATCB/V+ is housed in a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+2C) with exposed thermal pad connected to PGND. The package supports automated optical inspection (AOI) and improves solder joint reliability in automotive reflow profiles.
| Pin/Terminal | 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 3.3V–36V logic; no internal pullup/pulldown-allows flexible sequencing with MCU GPIO or KEY signal without leakage current penalty. |
| 3 BST | Bootstrap capacitor node | Drives high-side FET gate; requires 0.1µF ceramic capacitor to LX-critical for maintaining >99% duty cycle in dropout. |
| 4 SUP | Main supply input | Connects to 4.7µF ceramic capacitor to PGND-filters high-frequency ripple from upstream source (e.g., alternator or DC/DC front-end). |
| 5 LX | Switching node | Connects to inductor; carries high di/dt current-must be routed with minimal loop area to suppress radiated EMI. |
| 6 PGND | Power ground return | Low-impedance path for LX, SUP, and OUT currents-separate from AGND to prevent noise coupling into feedback circuitry. |
| 7 AGND | Analog ground reference | Reference for FB, PGOOD, and internal bandgap-must be connected to PGND at single point near IC for stability. |
| 8 FB | Feedback input | Tied internally to BIAS for fixed 3.3V operation-no external resistor divider required, reducing component count and layout sensitivity. |
| 9 OUT | Regulated output | Delivers 3.3V/1.2A; bypassed with 22µF ceramic capacitor to PGND-ensures low AC impedance for fast transient response. |
| 10 BIAS | Internal 5V LDO output | Supplies internal circuitry; requires 1µF ceramic capacitor to AGND-powers gate drivers and control logic independently of OUT. |
| 11 SYNC | Mode selection input | Ground = skip mode (low IQ); BIAS = forced-PWM (constant fSW)-enables dynamic trade-off between efficiency and EMI. |
| 12 PGOOD | Open-drain power-good flag | Pulls low when VOUT drops below 93% nominal-used for processor reset assertion or system power sequencing coordination. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck architecture with integrated FETs | Eliminates external MOSFETs and driver ICs-reduces total solution size to < 50mm² and simplifies thermal management. |
| AEC-Q100 qualified (Grade -40°C to +125°C) | Validated for automotive under-hood and infotainment applications-meets stress testing requirements for vibration, temperature cycling, and humidity. |
| 40V load-dump protection | Withstands ISO 7637-2 Pulse 5a without external clamping-removes need for discrete TVS diodes in 12V/24V systems. |
| Fixed 2.5ms soft-start | Prevents inrush current during power-up-avoids brownout on shared supply rails and eliminates need for external timing components. |
| PGOOD with 65µs debounce (PWM mode) | Provides clean, glitch-free system reset signaling-compatible with FPGA and microcontroller POR requirements without external RC filtering. |
| Side-wettable TDFN package | Enables automated AOI of solder joints-improves manufacturing yield and field reliability in high-volume automotive production. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC, display interface, and audio codec in head-unit systems with cold-cranking (5.5V min) and load-dump (40V max) events. IC Role / Device Role / Timing Role: Primary 3.3V buck regulator delivering 1.2A with tight regulation and fast transient response to handle burst-mode CPU activity. Use Value: Eliminates need for secondary LDO post-regulation-reduces heat generation and improves overall system efficiency by >15% vs. two-stage approach. |
Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view camera modules mounted in exterior housings. IC Role / Device Role / Timing Role: Single-chip 3.3V source with AEC-Q100 qualification and −40°C startup capability for wide ambient temperature operation. Use Value: Enables direct battery connection without pre-regulator-reducing bill-of-materials cost by $0.32 and PCB area by 28mm² per module. |
| Industrial PLC I/O Module | Telematics Control Unit (TCU) |
|
Use Scenario: Provides isolated 3.3V rail for microcontroller and communication interfaces (RS-485, CAN) in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: High-reliability DC/DC converter supporting extended input range (9–36V DC) and operating up to +85°C ambient. Use Value: Maintains regulation during brownout conditions (down to 3.5V input) and survives 40V surges-reducing field failure rate by 3× vs. non-automotive buck ICs. |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in always-connected vehicle connectivity units with sleep-mode current constraints. IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter enabling < 10µA system sleep current when paired with intelligent enable sequencing. Use Value: Extends backup battery life from 48 hours to >14 days in disconnected state-meeting OEM requirements for remote diagnostics and firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQWR | 3.5V–36V input, 1.2A, 2.1MHz, but fixed 5V only (no 3.3V variant); no spread-spectrum; 5.5µA IQ | Lacks factory-trimmed 3.3V option and SPS pin-requires external resistor divider for 3.3V, increasing BOM and layout complexity | Select when 5V rail is needed and EMI margin is sufficient without spread-spectrum modulation |
| MPQ4420AGL-A-Z | 3.3V–36V input, 2A, 500kHz–2.5MHz adjustable, 10µA IQ, no AEC-Q100 grade | Higher current but lower efficiency at light loads; not qualified for automotive temperature or stress testing | Select for industrial applications where AEC-Q100 is not mandated and higher output current is required |
Compared with LM61480RQWR and MPQ4420AGL-A-Z, the MAX20076DATCB/V+ uniquely combines factory-trimmed 3.3V output, AEC-Q100 Grade 1 qualification, 3.5µA standby IQ, and integrated spread-spectrum-making it the only drop-in solution for automotive 3.3V rails demanding zero-resistor configuration and certified reliability.
Availability
MAX20076DATCB/V+ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and industrial PLC I/O requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX20076DATCB/V+ 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 since 1965.
The MAX20076D belongs to Analog Devices' automotive-qualified power management portfolio, designed specifically for single-stage, high-efficiency DC/DC conversion in harsh environments with wide input voltage and stringent EMI requirements.
FAQ
What is the maximum input voltage the MAX20076DATCB/V+ can withstand without damage?
The MAX20076DATCB/V+ has an absolute maximum input voltage rating of +40V for up to 1 second, enabling compliance with ISO 7637-2 Load Dump Pulse 5a. Its recommended operating range is 3.5V to 36V continuous. Operation above 36V-even briefly-may trigger internal protection but must remain within the 40V/1s limit to avoid permanent damage. This rating is verified per Analog Devices' AEC-Q100 stress test protocol.
Does the MAX20076DATCB/V+ require external feedback resistors to set its 3.3V output?
No. The MAX20076DATCB/V+ is factory-trimmed for fixed 3.3V output; the FB pin is internally connected to the BIAS rail, eliminating the need for external resistors. This configuration ensures ±2% output accuracy over 6V–18V input and −40°C to +125°C, reduces component count, and avoids layout sensitivity associated with high-impedance feedback networks.
How does the MAX20076DATCB/V+ achieve 3.5µA quiescent current?
The MAX20076DATCB/V+ achieves 3.5µA quiescent current by entering standby mode when load current falls below ~5mA: the internal high-voltage LDO shuts down, VBIAS is sourced from the regulated output, and most control circuitry is gated off. This state is automatically entered in skip mode with EN asserted and no switching activity-verified across all production lots per datasheet Table "Supply Current".
Can the MAX20076DATCB/V+ operate in dropout, and what is its minimum dropout voltage?
Yes. The MAX20076DATCB/V+ operates in dropout by achieving up to 99% duty cycle, allowing regulation when input voltage approaches output voltage. At 1.2A load and 3.3V output, the typical dropout voltage is 350mV (i.e., VIN ≥ 3.65V). This behavior is enabled by periodic BST capacitor recharge during dropout-confirmed in the "Extended Input Voltage Range" section of the datasheet.
Is the MAX20076DATCB/V+ pin-compatible with other devices in the MAX20075D/MAX20076D family?
Yes-the MAX20076DATCB/V+ shares identical pinout, package (12-pin side-wettable TDFN), and footprint with MAX20075D, MAX20076E, and MAX25276D variants. However, output voltage (3.3V vs. 5V/1.8V), current rating (1.2A vs. 0.6A), and FB configuration differ. Swapping requires verification of output voltage compatibility and load-current sufficiency-not a blind drop-in replacement.
MAX20076DATCB/V+ 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 (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3V (3.3V)
- Voltage - Output (Max):
- 10V
- Current - Output:
- 1.2A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX20076DATCB/V+ FAQ
1.How can I place an order for MAX20076DATCB/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20076DATCB/V+ 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 MAX20076DATCB/V+ reliable?
The price and inventory of MAX20076DATCB/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20076DATCB/V+ is usually 5 days.
3.What payment methods are accepted for MAX20076DATCB/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20076DATCB/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20076DATCB/V+?
MAX20076DATCB/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20076DATCB/V+ 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 MAX20076DATCB/V+?
For technical support, including MAX20076DATCB/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20076DATCB/V+ requirements.
6.How does Aetrix verify that MAX20076DATCB/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20076DATCB/V+ 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 MAX20076DATCB/V+ meets industry standards.
7.What is the process for return or replacement of MAX20076DATCB/V+?
All MAX20076DATCB/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20076DATCB/V+, 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 MAX20076DATCB/V+ part is unused and in its original packaging.
Return procedure for MAX20076DATCB/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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