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Analog Devices Inc./Maxim Integrated MAX20072ATAB/V+
- Part No.:
- MAX20072ATAB/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX20072ATAB/V+.pdf
- Description:
- IC REG BUCK 1.2V 1A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,657
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Product details
Overview
MAX20072ATAB/V+ from Analog Devices is a 1A, 2.2MHz synchronous step-down DC-DC converter with factory-preset 1.2V output, ±1.5% accuracy, and integrated high-side/low-side MOSFETs (80mΩ/50mΩ). It operates from 3.0V–5.5V input, delivers up to 1A load current, and features PGOOD, EN, SYNC, and spread-spectrum operation - designed for automotive point-of-load regulation.
For engineers reviewing the MAX20072ATAB/V+ datasheet, MAX20072ATAB/V+ pinout, MAX20072ATAB/V+ application, or MAX20072ATAB/V+ equivalent, key selection considerations include its 1.2V fixed output, 8-pin TDFN-EP package, -40°C to +125°C AEC-Q100 qualified operation, 0.85ms soft-start, and current-mode control architecture with forced-PWM/skip-mode flexibility.
Technical Context
The MAX20072ATAB/V+ implements a current-mode PWM controller with internal 0.5V reference and fixed 2.2MHz oscillator (±3% spread-spectrum enabled). Its dual-MOSFET power stage supports continuous 1A output with thermal shutdown at 165°C and overcurrent limiting via peak-current sensing.
It integrates analog supply (AV) decoupling with 10Ω series resistor, open-drain PGOOD with 7% OV/UV thresholds and 50µs hold time, and SYNC pin that toggles between skip mode (SYNC grounded) and forced-PWM mode (SYNC tied to PV or external clock).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V (factory-trimmed, no external resistors required) |
| Max Output Current | 1A continuous - enables compact point-of-load regulation for SoCs/FPGAs |
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 5V rails and post-regulation of 3.3V/5V supplies |
| Switching Frequency | 2.2MHz ±3% (spread-spectrum enabled) - allows all-ceramic design and small 2.2µH inductors |
| Output Accuracy | ±1.5% over line, load, and temperature (-40°C to +125°C) - meets tight tolerance requirements for core logic rails |
| Soft-Start Time | Fixed 0.85ms - limits inrush current during power-up without external components |
| Thermal Protection | 165°C shutdown with 15°C hysteresis - ensures reliability under sustained overload or poor airflow |
Pinout & Package
Package: 8-pin TDFN-EP (2mm × 2mm × 0.85mm), exposed pad (EP) thermally connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AV | Analog supply input | Noise-sensitive bias rail; requires 1µF capacitor + 10Ω series resistor to PV for EMI suppression |
| 2 SYNC | Mode control input | Ground = skip mode (light-load efficiency); PV or clock = forced-PWM (fixed-frequency EMI control) |
| 3 PGND | Power ground return | Low-impedance path for high di/dt switching currents; must be tied to EP and system GND |
| 4 PV | Main power input | 3.0V–5.5V supply; requires ≥4.7µF ceramic capacitor directly to PGND |
| 5 PG | Open-drain PGOOD output | Asserts LOW if output deviates >7% from 1.2V; needs external pullup ≥2kΩ |
| 6 LX | Switch node | Connects to inductor; carries high dv/dt; must minimize trace length and loop area |
| 7 EN | Active-high enable | Rising edge initiates 0.85ms soft-start; falling edge shuts down IC with <2µA quiescent current |
| 8 OUT | Feedback input | Internally connected to 0.5V reference; shorted to output for fixed 1.2V configuration |
Key Features
| Feature | Design Value |
|---|---|
| Factory-preset 1.2V output | Eliminates external feedback resistors and associated layout sensitivity while maintaining ±1.5% accuracy |
| Synchronous rectification | Integrated 80mΩ HS / 50mΩ LS MOSFETs enable >92% efficiency at 1A, reducing heat and external component count |
| Spread-spectrum modulation | ±3% frequency dithering lowers peak EMI by spreading energy across 2.13–2.27MHz band - aids automotive CISPR-25 compliance |
| Current-mode control | Provides inherent cycle-by-cycle current limiting, fast transient response, and stable operation with low-ESR ceramic capacitors |
| AEC-Q100 qualified | Rated for -40°C to +125°C ambient operation with full electrical specs guaranteed - suitable for engine bay and ADAS applications |
Applications
| Automotive Infotainment Power | ADAS Camera Core Rail |
|---|---|
Use Scenario: Powers 1.2V core voltage of infotainment SoC (e.g., Qualcomm SA8155P) from 5V domain rail in head unit. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering stable 1.2V/1A with fast transient response to handle CPU burst loads. Use Value: Factory-trimmed 1.2V eliminates resistor matching errors; 2.2MHz switching allows ultra-compact 2.2µH inductor + 10µF ceramic solution. | Use Scenario: Supplies 1.2V core rail to image signal processor (ISP) in rear-view camera module operating near engine compartment. IC Role / Device Role / Timing Role: High-reliability DC-DC converter with thermal shutdown and PGOOD monitoring for safety-critical vision systems. Use Value: -40°C to +125°C rating and AEC-Q100 qualification ensure uninterrupted operation; PGOOD enables system-level fault detection and graceful shutdown. |
| Industrial PLC I/O Module | Automotive Telematics Gateway |
Use Scenario: Regulates 1.2V supply for ARM Cortex-M7 microcontroller in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Post-regulator converting 3.3V backplane voltage to precise 1.2V core voltage with minimal board space. Use Value: 8-pin TDFN-EP footprint (4mm²) saves PCB area vs. larger SOIC alternatives; spread-spectrum reduces conducted EMI in dense industrial enclosures. | Use Scenario: Provides 1.2V rail to cellular modem (e.g., u-blox SARA-R5) in vehicle telematics control unit with CAN/FlexRay interfaces. IC Role / Device Role / Timing Role: Automotive-grade buck converter with EN-controlled sequencing and PGOOD status reporting for modem power management. Use Value: Enable input synchronizes with MCU boot sequence; PGOOD confirms rail stability before modem initialization - preventing firmware lockups. |
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+ | Same 1A, 2.2MHz, TDFN-EP package but spread-spectrum disabled; adjustable output (requires external R1/R2) | Requires external feedback network; lacks factory-set 1.2V precision and EMI reduction benefit | Select when adjustable output or lower EMI sensitivity is acceptable |
| TPS6286418RTER | 1.2V fixed, 1A, 2.25MHz, 1.5mm × 2.0mm WSON; ±1% accuracy; no spread-spectrum; different pinout | Smaller footprint but non-pin-compatible; lacks PGOOD and SYNC functionality | Select when board space is critical and PGOOD/SYNC are not required |
Compared with MAX20072ATAA/V+, the MAX20072ATAB/V+ offers guaranteed 1.2V accuracy without external components and built-in EMI reduction; versus TPS6286418RTER, it provides automotive-grade PGOOD signaling and flexible mode control at the cost of slightly larger package size.
Availability
MAX20072ATAB/V+ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and industrial PLC I/O modules requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for MAX20072ATAB/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.
The MAX20072 is part of Analog Devices' automotive-qualified power management portfolio, engineered specifically for demanding point-of-load regulation in safety-critical and thermally constrained environments like ADAS and infotainment systems.
FAQ
What is the output voltage of the MAX20072ATAB/V+ and how is it set?
The MAX20072ATAB/V+ has a factory-preset fixed output voltage of 1.2V, achieved using internal laser trimming. No external feedback resistors are required, enabling ±1.5% accuracy over line, load, and temperature (-40°C to +125°C). This configuration simplifies layout and improves reliability compared to adjustable variants like MAX20072ATAA/V+.
Does the MAX20072ATAB/V+ support synchronization to an external clock?
Yes, the MAX20072ATAB/V+ supports external clock synchronization via the SYNC pin. When SYNC is driven to PV or an external clock signal (1.7–2.4MHz), the device operates in forced-PWM mode at the applied frequency. When SYNC is grounded or left floating, it defaults to skip mode for improved light-load efficiency. The MAX20072ATAB/V+ retains its ±3% spread-spectrum capability only in internally generated 2.2MHz mode.
What protection features does the MAX20072ATAB/V+ include?
The MAX20072ATAB/V+ integrates overtemperature shutdown (165°C trip, 15°C hysteresis), cycle-by-cycle overcurrent limiting (1.4–1.6A threshold), short-circuit protection, and PGOOD monitoring with 7% OV/UV detection. It also features UVLO (2.48V rising threshold) and robust pin ESD protection. These features ensure safe operation in automotive and industrial environments where input transients and thermal stress are common.
Is the MAX20072ATAB/V+ qualified for automotive applications?
Yes, the MAX20072ATAB/V+ is AEC-Q100 qualified for automotive applications and rated for operation from -40°C to +125°C ambient temperature. The "/V+" suffix denotes RoHS-compliant, lead-free packaging meeting automotive reliability standards. Full electrical specifications, including output accuracy and thermal performance, are guaranteed across this extended temperature range - making it suitable for engine control units, ADAS sensors, and infotainment systems.
What is the purpose of the AV pin on the MAX20072ATAB/V+?
The AV pin on the MAX20072ATAB/V+ supplies clean analog bias to the internal control circuitry. It must be connected to PV through a 10Ω resistor and decoupled with a 1.0µF ceramic capacitor to PGND. This RC filter suppresses high-frequency noise from the main power rail, improving PWM stability, reducing output ripple, and enhancing PGOOD accuracy - especially critical in noise-sensitive automotive applications.
MAX20072ATAB/V+ 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX20072ATAB/V+ FAQ
1.How can I place an order for MAX20072ATAB/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20072ATAB/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 MAX20072ATAB/V+ reliable?
The price and inventory of MAX20072ATAB/V+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20072ATAB/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20072ATAB/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20072ATAB/V+?
MAX20072ATAB/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20072ATAB/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 MAX20072ATAB/V+?
For technical support, including MAX20072ATAB/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20072ATAB/V+ requirements.
6.How does Aetrix verify that MAX20072ATAB/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20072ATAB/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 MAX20072ATAB/V+ meets industry standards.
7.What is the process for return or replacement of MAX20072ATAB/V+?
All MAX20072ATAB/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20072ATAB/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 MAX20072ATAB/V+ part is unused and in its original packaging.
Return procedure for MAX20072ATAB/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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