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Analog Devices Inc./Maxim Integrated MAX20072ATAB/V+T
- Part No.:
- MAX20072ATAB/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX20072ATAB/V+T.pdf
- Description:
- IC REG BUCK 1.2V 1A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,514
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Product details
Overview
MAX20072ATAB/V+T from Analog Devices is a 1A, 2.2MHz synchronous step-down DC-DC converter in an 8-pin TDFN-EP package, delivering factory-preset 1.2V output with ±1.5% accuracy over -40°C to +125°C ambient. It operates from 3.0V–5.5V input, features PGOOD and EN pins, and integrates spread-spectrum modulation for EMI reduction-designed for automotive point-of-load regulation.
For engineers reviewing the MAX20072ATAB/V+T datasheet, MAX20072ATAB/V+T pinout, MAX20072ATAB/V+T application, or MAX20072ATAB/V+T equivalent, key selection criteria include its 1.2V fixed output, 1A current capability, 2.2MHz switching frequency, spread-spectrum operation, and AEC-Q100 qualified automotive grade.
Technical Context
The MAX20072ATAB/V+T uses current-mode control with internal 0.5V reference and fixed 0.85ms soft-start. Its 2.2MHz oscillator supports synchronization and includes ±3% spread-spectrum modulation to reduce peak EMI emissions without external components.
It integrates high-side (80–300mΩ) and low-side (50–200mΩ) MOSFETs, employs forced-PWM/skip-mode operation via SYNC pin control, and provides overtemperature shutdown at +165°C with 15°C hysteresis and cycle-by-cycle current limiting up to 1.6A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-preset 1.2V ±1.5% - eliminates need for external feedback resistors and enables single-supply rail generation. |
| Max Output Current | 1A continuous - supports high-current microcontroller cores, FPGAs, and automotive domain controllers. |
| Input Voltage Range | 3.0V to 5.5V - compatible with 3.3V/5V automotive power rails and post-regulation after primary buck converters. |
| Switching Frequency | 2.2MHz fixed - enables use of small 2.2µH inductors and all-ceramic output capacitors (e.g., 10µF X7R). |
| Spread Spectrum | Enabled (±3%) - reduces conducted and radiated EMI peaks by spreading energy across 2.13–2.27MHz band. |
| Operating Temperature | -40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood automotive applications. |
| Soft-Start Time | Fixed 0.85ms - limits inrush current during power-up and prevents output overshoot in sensitive loads. |
Pinout & Package
Package: 8-pin TDFN-EP (2mm × 2mm × 0.85mm) with exposed pad (EP) thermally connected to GND. RoHS-compliant, lead-free, automotive-qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AV | Analog supply | Separate analog rail for internal reference and error amplifier; requires 1µF capacitor + 10Ω series resistor for noise immunity. |
| 2 SYNC | Synchronization input | Configures operation mode: grounded = skip mode (light-load efficiency); tied to PV or clock = forced PWM (fixed 2.2MHz). |
| 3 PGND | Power ground | High-current return path for LX switch node; must be low-inductance connection to EP and system GND plane. |
| 4 PV | Main power input | 3.0–5.5V supply input; requires ≥4.7µF ceramic capacitor directly to PGND for transient suppression. |
| 5 PG | Open-drain PGOOD output | Asserts LOW when output deviates >7% from 1.2V; requires external pullup (≥2kΩ) to enable system power sequencing. |
| 6 LX | Switch node | Connects to inductor's switched side; carries high di/dt current - layout must minimize loop area to reduce EMI. |
| 7 EN | Enable input | Active-high logic control (VIH = 1.5V min); rising edge initiates 0.85ms soft-start; falling edge enters shutdown (<2µA quiescent). |
| 8 OUT | Feedback input | Connected internally to 0.5V reference; unused in fixed-output variants like MAX20072ATAB/V+T (1.2V preset). |
| EP | Exposed thermal pad | Internally connected to GND; requires ≥3 vias (0.3mm) to inner/outer GND planes for thermal dissipation (θJA = 85.3°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Factory-preset 1.2V output | Eliminates external resistor network, reduces BOM count, and guarantees ±1.5% accuracy without 0.1% precision resistors. |
| Integrated spread-spectrum oscillator | Reduces EMI peak amplitude by ~10dB without requiring external modulation circuitry or layout changes. |
| Current-mode PWM architecture | Provides inherent cycle-by-cycle current limiting, fast transient response (<10µs), and stable operation with ceramic output caps. |
| Automotive-grade thermal protection | Shuts down at +165°C junction temperature with 15°C hysteresis - ensures reliability in engine-control and ADAS modules. |
| Ultra-small 2mm × 2mm footprint | Enables dense PCB layouts in space-constrained automotive ECUs and infotainment head units. |
Applications
| Automotive ADAS Camera Module | Infotainment SoC Core Rail |
|---|---|
Use Scenario: Powering image signal processor (ISP) and MIPI CSI-2 interface in rear-view camera module operating under hood temperature extremes. IC Role / Device Role / Timing Role: Primary 1.2V core regulator delivering clean, low-noise power with fast load transient response to handle burst-mode sensor data transfers. Use Value: Factory-trimmed 1.2V output ensures ISP voltage compliance without calibration; spread spectrum minimizes interference with RF receivers in adjacent modules. |
Use Scenario: Supplying 1.2V core voltage to quad-core ARM Cortex-A53 in automotive infotainment head unit with strict EMI limits. IC Role / Device Role / Timing Role: Point-of-load regulator placed near SoC package, synchronized to system clock via SYNC pin to avoid beat-frequency noise. Use Value: 2.2MHz switching allows compact 2.2µH inductor and avoids AM/FM radio bands; PGOOD enables safe boot sequencing before SoC initialization. |
| Body Control Module (BCM) MCU Rail | Automotive Gateway Microcontroller |
Use Scenario: Generating 1.2V for 32-bit automotive MCU (e.g., S32K144) in body control unit exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Main DC-DC converter with EN-controlled power gating and PGOOD-monitored startup integrity. Use Value: -40°C to +125°C operation ensures functionality during cold cranking and under-hood thermal soak; overtemperature shutdown prevents latch-up failure. |
Use Scenario: Providing regulated 1.2V to gateway microcontroller managing CAN FD, Ethernet, and LIN communication stacks. IC Role / Device Role / Timing Role: Post-regulator downstream of 5V main supply, supporting dynamic voltage scaling during low-power sleep modes. Use Value: Skip-mode operation (via SYNC grounding) achieves >85% efficiency at 10mA load; forced-PWM mode maintains timing stability during CAN message bursts. |
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 | Same 1A, 2.2MHz, 8-TDFN package but with spread-spectrum disabled; factory-preset output not specified in ordering table - likely adjustable or unspecified. | Lacks EMI-reduction feature; suitable where spectral purity is less critical than cost or test simplicity. | Select MAX20072ATAA/V+T only if spread-spectrum is unnecessary and output voltage can be set externally or is noncritical. |
| TPS6286418RTER | 1.8V fixed output (not 1.2V), 1A, 2.25MHz, 2mm × 2mm QFN; no spread spectrum; AEC-Q100 Grade 1; 0.5V reference but different FB architecture. | Not pin-compatible; requires redesign of feedback network and may need different inductor value due to distinct current-sense method. | Choose TPS6286418RTER only when 1.8V rail is acceptable and TI's ecosystem integration (e.g., WEBENCH) is preferred over Analog Devices' design tools. |
Compared with MAX20072ATAA/V+T, the MAX20072ATAB/V+T offers verified EMI reduction via spread spectrum and guaranteed 1.2V output; versus TPS6286418RTER, it provides exact 1.2V regulation and tighter output accuracy (±1.5% vs typical ±2%), critical for voltage-sensitive automotive processors.
Availability
MAX20072ATAB/V+T is available at Aetrix Electronics and suitable for automotive ADAS systems, infotainment head units, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX20072ATAB/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 since 1965.
The MAX20072 belongs to Analog Devices' automotive-qualified power management portfolio, designed specifically for robust, low-EMI DC-DC conversion in safety-critical vehicle subsystems including ADAS, powertrain, and chassis control.
FAQ
What is the output voltage setting of the MAX20072ATAB/V+T?
The MAX20072ATAB/V+T is factory-preset to deliver a precise 1.2V output with ±1.5% accuracy over full load, line, and temperature. This eliminates the need for external feedback resistors, simplifying design and reducing BOM cost. The internal 0.5V reference and trim bits ensure tight regulation without user adjustment - the OUT pin is not used in this fixed-output variant.
Does the MAX20072ATAB/V+T support synchronization to an external clock?
Yes, the MAX20072ATAB/V+T supports external synchronization via its SYNC pin. When driven high (to PV or an external clock source), the device operates in forced-PWM mode at the applied frequency (1.7–2.4MHz range). This enables timing alignment with system clocks to avoid beat frequencies - critical in automotive Ethernet and radar subsystems where spectral interference must be avoided.
Is the MAX20072ATAB/V+T qualified for automotive applications?
Yes, the MAX20072ATAB/V+T is AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient), with built-in overtemperature shutdown at +165°C and 15°C hysteresis. Its 8-TDFN-EP package is RoHS-compliant and lead-free. The "/V+" suffix explicitly denotes automotive qualification per Analog Devices' ordering nomenclature, making it suitable for engine control, ADAS, and gateway modules.
How does the spread-spectrum feature work in the MAX20072ATAB/V+T?
The MAX20072ATAB/V+T integrates a pseudo-random spread-spectrum oscillator that modulates the 2.2MHz switching frequency by ±3% (2.13–2.27MHz). This spreads electromagnetic energy across a wider bandwidth, reducing peak EMI by up to 10dB compared to fixed-frequency operation - enabling compliance with CISPR 25 Class 5 without added shielding or filtering components.
What is the purpose of the AV pin on the MAX20072ATAB/V+T?
The AV pin on the MAX20072ATAB/V+T supplies clean analog power to the internal reference and error amplifier. It must be decoupled with a 1µF ceramic capacitor to PGND and isolated from noisy PV using a 10Ω series resistor. This separation prevents switching noise from degrading output voltage accuracy and transient response - especially critical in automotive applications with high dv/dt noise sources.
MAX20072ATAB/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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- 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)
MAX20072ATAB/V+T FAQ
1.How can I place an order for MAX20072ATAB/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20072ATAB/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 MAX20072ATAB/V+T reliable?
The price and inventory of MAX20072ATAB/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 MAX20072ATAB/V+T is usually 5 days.
3.What payment methods are accepted for MAX20072ATAB/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20072ATAB/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20072ATAB/V+T?
MAX20072ATAB/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20072ATAB/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 MAX20072ATAB/V+T?
For technical support, including MAX20072ATAB/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20072ATAB/V+T requirements.
6.How does Aetrix verify that MAX20072ATAB/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20072ATAB/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 MAX20072ATAB/V+T meets industry standards.
7.What is the process for return or replacement of MAX20072ATAB/V+T?
All MAX20072ATAB/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20072ATAB/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 MAX20072ATAB/V+T part is unused and in its original packaging.
Return procedure for MAX20072ATAB/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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