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Analog Devices Inc./Maxim Integrated MAX20072ATAD/V+T
- Part No.:
- MAX20072ATAD/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX20072ATAD/V+T.pdf
- Description:
- IC REG BUCK ADJ 1A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,512
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Product details
Overview
MAX20072ATAD/V+T from Analog Devices is a 1A, 2.2MHz synchronous step-down DC-DC converter in an 8-pin TDFN-EP package, delivering 0.5V–3.8V output from a 3.0V–5.5V input. It features ±1.5% output-voltage accuracy over load/line/temperature, integrated PGOOD and EN control, and operates across –40°C to +125°C for automotive point-of-load regulation.
For engineers reviewing the MAX20072ATAD/V+T datasheet, MAX20072ATAD/V+T pinout, MAX20072ATAD/V+T application, or MAX20072ATAD/V+T equivalent, key selection criteria include its spread-spectrum oscillator (±3%), 0.85ms soft-start, current-mode architecture with 80mΩ/50mΩ internal FETs, and factory-configurable 1.2V output with spread spectrum enabled.
Technical Context
The MAX20072ATAD/V+T implements a current-mode PWM controller with fixed 2.2MHz switching frequency and optional spread-spectrum modulation (±3%). Its internal high-side NMOS (80mΩ) and low-side PMOS (50mΩ) enable high-efficiency operation up to 1A while supporting forced-PWM or pulse-skipping modes via SYNC pin control.
It integrates precision monitoring functions: 107% OV and 93% UV thresholds on PGOOD, 0.5V internal reference for adjustable feedback, and thermal shutdown at +165°C with 15°C hysteresis. The device uses a 0.85ms internal soft-start ramp and supports external synchronization from 1.7MHz to 2.4MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1A continuous - supports high-density automotive SoC power rails without external current boosting. |
| Input Voltage Range | 3.0V to 5.5V - compatible with standard 3.3V/5V intermediate bus architectures and post-regulation stages. |
| Switching Frequency | 2.2MHz (±10%) - enables use of sub-2.2µH inductors and all-ceramic output capacitors for compact layout. |
| Output Voltage Accuracy | ±1.5% over line/load/temperature - eliminates need for 0.1% external resistors in factory-preset configurations. |
| Soft-Start Time | Fixed 0.85ms - limits inrush current during power-up, reducing stress on input capacitors and upstream supplies. |
| Thermal Shutdown | +165°C with 15°C hysteresis - ensures safe recovery after overload or ambient temperature excursions in under-hood environments. |
| Spread Spectrum | Enabled (±3%) - reduces peak EMI amplitude by spreading energy across 2.134–2.266MHz band per datasheet ordering code. |
Pinout & Package
Package: 8-pin TDFN-EP (2mm × 2mm × 0.85mm), exposed pad (EP) thermally connected to GND. RoHS-compliant, automotive-qualified (AEC-Q100 Grade 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AV | Analog supply rail | Separate low-noise analog supply input; requires 1µF capacitor + 10Ω series resistor to PV for noise immunity. |
| 2 SYNC | Synchronization control | Drives forced-PWM mode when pulled high to PV; enables skip mode when grounded or floating. |
| 3 PGND | Power ground return | Dedicated low-impedance path for high-current switch node return; must be tied to EP and system GND. |
| 4 PV | Main power input | 3.0V–5.5V supply input; requires ≥4.7µF ceramic capacitor directly to PGND for stability. |
| 5 PG | Open-drain PGOOD output | Asserts LOW when output deviates >7% from regulation; requires external pullup ≥2kΩ to I/O supply. |
| 6 LX | Switch node connection | Connects to inductor's switched side; carries high di/dt pulses - shortest possible trace length required. |
| 7 EN | Enable input | Active-high logic input (VIH = 1.5V); initiates 0.85ms soft-start on rising edge, full shutdown on falling edge. |
| 8 OUT | Feedback input | Accepts 0.5V internal reference; connects to resistor divider for adjustable output or directly to output cap for fixed 1.2V. |
| EP | Exposed thermal pad | Must be soldered to solid GND plane with ≥3 vias (0.3mm Ø) for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum oscillator | ±3% frequency dithering reduces conducted EMI peaks - critical for automotive CISPR 25 Class 5 compliance. |
| Factory-preset 1.2V output | Eliminates external feedback resistors and associated tolerance errors; achieves ±1.5% accuracy without 0.1% components. |
| Current-mode control | Provides inherent cycle-by-cycle current limiting and fast transient response (<10µs propagation delay on PGOOD). |
| Integrated MOSFETs | 80mΩ HS / 50mΩ LS RDS(on) - delivers >92% efficiency at 1A/3.3V out, minimizing thermal footprint in space-constrained modules. |
| Automotive temperature range | –40°C to +125°C ambient operation - qualified per AEC-Q100 Grade 1, enabling use in engine control units and ADAS domain controllers. |
Applications
| Infotainment Power Supply | ADAS Camera Module |
|---|---|
Use Scenario: Regulating 1.2V core voltage for ARM-based infotainment SoCs in head units. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering stable 1A output with tight transient response. Use Value: Factory-preset 1.2V output and ±1.5% accuracy eliminate trimming effort; spread spectrum meets OEM EMI limits without added shielding. |
Use Scenario: Powering image signal processors (ISPs) and MIPI interfaces in rear-view and surround-view cameras. IC Role / Device Role / Timing Role: Low-noise, high-efficiency buck converter operating in forced-PWM mode to suppress switching ripple near analog video paths. Use Value: 2.2MHz switching avoids interference with MIPI clock bands; -40°C to +125°C rating ensures reliability in unventilated camera housings. |
| Body Control Module (BCM) | Automotive Gateway ECU |
Use Scenario: Generating 3.3V for CAN transceivers, LIN controllers, and microcontroller peripherals in BCMs. IC Role / Device Role / Timing Role: Post-regulator stepping down 5V system rail to clean 3.3V logic supply with PGOOD monitoring. Use Value: Integrated PGOOD with 105–109% OV and 91–95% UV thresholds enables robust power sequencing and fault detection per ISO 16750-2. |
Use Scenario: Supplying 1.8V or 1.2V to multi-core gateway MCUs handling Ethernet, CAN FD, and wireless coexistence. IC Role / Device Role / Timing Role: High-current, low-profile DC-DC stage supporting dynamic voltage scaling and rapid load transients. Use Value: 0.85ms soft-start prevents brownout during MCU boot; TDFN-EP package fits dense gateway PCB layouts with minimal thermal resistance (θJA = 85.3°C/W). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20072ATAA/V+T | No spread spectrum; same 1A rating, 2.2MHz, TDFN-EP package, and 1.2V preset output. | Lacks EMI reduction capability - suitable only where board-level filtering satisfies CISPR 25 requirements. | Select MAX20072ATAA/V+T if spread spectrum is unnecessary and cost optimization is prioritized. |
| TPS6286418RTER | Texas Instruments part: 1.8V fixed output, 1A, 2.25MHz, no spread spectrum, smaller 1.5mm × 1.5mm QFN. | Fixed 1.8V only; lacks PGOOD, wider input range (2.7V–6V), lower thermal resistance (θJA = 60°C/W). | Choose TPS6286418RTER for space-constrained designs needing 1.8V and higher thermal performance, but verify PGOOD omission is acceptable. |
Compared with MAX20072ATAA/V+T, the MAX20072ATAD/V+T adds ±3% spread spectrum for EMI mitigation without sacrificing efficiency or thermal performance; versus TPS6286418RTER, it provides PGOOD monitoring and automotive-grade temperature support at the expense of slightly larger footprint.
Availability
MAX20072ATAD/V+T is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply with AEC-Q100 qualification and long-term production continuity.
Supply support for MAX20072ATAD/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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20072ATAD/V+T belongs to the MAX20071/MAX20072 family of automotive-grade DC-DC converters designed specifically for demanding point-of-load regulation in engine compartments, ADAS, and infotainment systems.
FAQ
What is the output voltage configuration of the MAX20072ATAD/V+T?
The MAX20072ATAD/V+T is factory-preset to 1.2V output with spread-spectrum oscillator enabled. It does not require external feedback resistors. The 0.5V internal reference and ±1.5% accuracy over temperature/line/load are maintained without user adjustment. This configuration is confirmed in the Ordering Information table of the datasheet.
Does the MAX20072ATAD/V+T support external synchronization?
Yes, the MAX20072ATAD/V+T supports external synchronization via the SYNC pin. When driven with a clock signal between 1.7MHz and 2.4MHz, it locks to the external frequency and operates in forced-PWM mode. This capability allows timing alignment with other system clocks to avoid beat frequencies and reduce EMI in complex automotive ECUs.
What protection features are integrated into the MAX20072ATAD/V+T?
The MAX20072ATAD/V+T integrates overtemperature shutdown (+165°C with 15°C hysteresis), cycle-by-cycle overcurrent limiting, short-circuit protection, input UVLO (2.48V rising), and PGOOD monitoring with 107% OV and 93% UV thresholds. These protections ensure robust operation in automotive environments subject to load dumps, cold cranking, and thermal stress.
How does the spread-spectrum feature of the MAX20072ATAD/V+T improve EMI performance?
The MAX20072ATAD/V+T's spread-spectrum oscillator modulates the 2.2MHz switching frequency by ±3%, distributing radiated and conducted noise energy across a 132kHz bandwidth. This reduces peak EMI amplitudes by up to 10dB compared to fixed-frequency operation - a critical advantage for meeting CISPR 25 Class 5 limits in automotive applications without adding ferrite beads or shielding.
What is the recommended PCB layout practice for the MAX20072ATAD/V+T's exposed pad?
The exposed pad (EP) of the MAX20072ATAD/V+T must be soldered to a solid GND plane using at least three 0.3mm-diameter vias. This provides both thermal conduction (θJC = 8.9°C/W) and low-inductance grounding for the high-current LX node. Splitting the ground plane beneath the IC or omitting vias degrades thermal performance and increases EMI susceptibility.
MAX20072ATAD/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-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):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 1A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX20072ATAD/V+T FAQ
1.How can I place an order for MAX20072ATAD/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20072ATAD/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 MAX20072ATAD/V+T reliable?
The price and inventory of MAX20072ATAD/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 MAX20072ATAD/V+T is usually 5 days.
3.What payment methods are accepted for MAX20072ATAD/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20072ATAD/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20072ATAD/V+T?
MAX20072ATAD/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20072ATAD/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 MAX20072ATAD/V+T?
For technical support, including MAX20072ATAD/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20072ATAD/V+T requirements.
6.How does Aetrix verify that MAX20072ATAD/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20072ATAD/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 MAX20072ATAD/V+T meets industry standards.
7.What is the process for return or replacement of MAX20072ATAD/V+T?
All MAX20072ATAD/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20072ATAD/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 MAX20072ATAD/V+T part is unused and in its original packaging.
Return procedure for MAX20072ATAD/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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