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Analog Devices Inc./Maxim Integrated MAX20022ATIA+
- Part No.:
- MAX20022ATIA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20022ATIA+.pdf
- Description:
- IC REG BUCK ADJ 1A QUAD 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:176
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Product details
Overview
MAX20022ATIA+ from Analog Devices is an automotive-grade quad synchronous step-down DC-DC PMIC integrating four 1.0A buck converters with factory- or resistor-programmable outputs (1.0V–4.0V), 2.2MHz fixed-frequency PWM operation, and integrated high- and low-side MOSFETs (125mΩ pMOS / 100mΩ nMOS typical). It operates from 3.0V–5.5V input and delivers stable power to microcontrollers, sensors, and ADAS domain controllers in automotive point-of-load applications.
For engineers reviewing the MAX20022ATIA+ datasheet, MAX20022ATIA+ pinout, MAX20022ATIA+ application, or MAX20022ATIA+ equivalent, key selection considerations include its -40°C to +125°C AEC-Q100 qualified operation, 28-pin TQFN-EP (5mm × 5mm) package with exposed thermal pad, spread-spectrum EMI reduction, 180° phase interleaving for two channels, and individual enable/PG outputs for precise supply sequencing.
Technical Context
The MAX20022ATIA+ implements peak current-mode control with internal slope and loop compensation, eliminating external compensation components. Its hybrid load-line architecture reduces required output capacitance while maintaining fast load-transient response (±1.5% deviation under 0A→1.0A step).
It features factory-trimmed input undervoltage monitoring (UVM disabled), input overvoltage protection (5.8V threshold), cycle-by-cycle current limiting (1.65A typical), and thermal shutdown at +185°C with 15°C hysteresis. All four channels operate in forced-PWM mode outside the AM band and support external synchronization via the SYNC pin (1.7–2.5MHz range).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery rail after pre-regulation or LDO. |
| Switching Frequency | 2.2MHz ±10% - enables all-ceramic capacitor design and compact 1.5µH inductors. |
| Output Current per Channel | Up to 1.0A - sufficient for powering core logic, I/O, memory, and analog subsystems in ECUs. |
| Output Voltage Range | 1.0V to 4.0V - programmable via external resistive divider (adjustable version) or factory-set. |
| Efficiency | Up to 95% at 5V input / 3.3V output / 1A load - minimizes thermal stress in confined automotive modules. |
| Thermal Resistance θJA | 35°C/W - achievable with proper PCB copper area and thermal vias under exposed pad. |
| Operating Temperature | -40°C to +125°C - meets automotive AEC-Q100 Grade 1 requirements for under-hood and cabin applications. |
Pinout & Package
MAX20022ATIA+ is housed in a 28-pin TQFN-EP package (5mm × 5mm × 0.8mm) with exposed thermal pad (EP = GND), optimized for automotive thermal and EMI performance. The package requires soldering the EP to a large internal ground plane with ≥6 thermal vias for reliable junction temperature control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4 | Active-high digital enable inputs | Independent channel control; allows staggered soft-start and dynamic power gating per rail. |
| PG1–PG4 | Open-drain power-good outputs | Assert low during startup, fault, or >6% UV/<10% OV; require external 10kΩ pull-up to VA. |
| LX1–LX4 | Switching node terminals | High-impedance when off; connect to 1.5µH inductor and ceramic output capacitor (10µF X7R). |
| OUTS1–OUTS4 | Voltage sense inputs | Feedback nodes for adjustable outputs; connect to resistive divider (R1/R2) with VOUTS = 1.000V reference. |
| SYNC | External clock synchronization input | Accepts 1.7–2.5MHz signal to align switching frequency; tie to PGND_ for internal 2.2MHz operation. |
| SEL | Output 3 voltage select | Fixed to PGND_ for MAX20022ATIA+; selects 1.8V output (not used in this variant). |
Key Features
| Feature | Design Value |
|---|---|
| Quad integrated buck converters | Four fully independent 1.0A channels with on-chip 125mΩ/100mΩ MOSFETs reduce BOM count and layout complexity. |
| 180° phase interleaving (OUT1/OUT2) | Halves input ripple current and cuts required input capacitance by ~50% versus single-phase operation. |
| Spread-spectrum modulation | ±3% frequency dither at 1.5kHz reduces peak radiated emissions without affecting regulation stability. |
| Factory-programmable soft-start | Fixed 3272-cycle ramp time limits inrush current and prevents system brownout during power-up. |
| Individual power-good signaling | Four open-drain PG outputs enable precise sequencing verification and fault isolation in multi-rail systems. |
Applications
| ADAS Camera Module Power | Automotive Infotainment SoC Core Rail |
|---|---|
|
Use Scenario: Powering image sensor, ISP, and MIPI interface in front/rear-view camera ECU. IC Role / Device Role / Timing Role: Quad buck PMIC delivering 1.2V (ISP core), 1.8V (MIPI PHY), 2.8V (sensor analog), and 3.3V (I/O) simultaneously. Use Value: 2.2MHz operation avoids AM band interference; phase interleaving lowers input cap requirement to one 10µF ceramic per PV input. |
Use Scenario: Supplying multiple voltage domains of a quad-core automotive infotainment processor. IC Role / Device Role / Timing Role: Generating 0.85V (CPU core), 1.1V (GPU), 1.8V (memory I/O), and 3.3V (peripheral bus) with independent enable/PG control. Use Value: Individual EN/PG pins allow controlled power-up sequence matching SoC boot requirements; forced-PWM ensures clean low-noise output during audio playback. |
| Body Control Module (BCM) | Automotive Gateway ECU |
|
Use Scenario: Powering microcontroller, CAN transceivers, LIN drivers, and LED drivers in centralized body electronics. IC Role / Device Role / Timing Role: Providing 3.3V (MCU VDD), 5.0V (CAN transceiver), 1.2V (MCU core), and 1.8V (LIN PHY) from 12V battery via pre-regulator. Use Value: -40°C to +125°C rating ensures reliability in engine bay proximity; UVM disabled avoids false brownout trips during cold cranking. |
Use Scenario: Supporting multi-network gateway (CAN FD, Ethernet AVB, LIN) with isolated domain supplies. IC Role / Device Role / Timing Role: Delivering 1.0V (Ethernet PHY core), 1.2V (CAN FD controller), 3.3V (isolated CAN/LIN interface), and 5.0V (USB PHY) with EMI-optimized layout. Use Value: Spread-spectrum + SYNC capability enables coexistence with sensitive RF receivers; TQFN-EP package meets tight height constraints (<0.8mm). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-buck PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20021ATIA+ | 3.2MHz switching frequency; includes UVM option (4.3V threshold); same pinout and package. | Better suited for systems requiring brownout detection during low-battery conditions (e.g., start-stop vehicles). | Select MAX20021ATIA+ only if UVM functionality is required; MAX20022ATIA+ offers lower EMI at 2.2MHz for noise-sensitive domains. |
| TPS653221AQPWPRQ1 | 3.0V–36V input; 3-channel (not quad); integrated watchdog and reset generator; 32-pin HTSSOP. | Targeted at safety-critical ASIL-B systems with diagnostic features; lacks spread-spectrum and phase interleaving. | Choose TPS653221AQPWPRQ1 for functional safety compliance; MAX20022ATIA+ preferred for compact size, higher integration, and EMI-sensitive ADAS. |
Compared with MAX20021ATIA+, MAX20022ATIA+ trades UVM capability for optimized 2.2MHz EMI performance and simplified configuration; versus TPS653221AQPWPRQ1, it offers higher channel count and smaller footprint but no built-in safety monitors-making it ideal for cost- and space-constrained non-ASIL domains.
Availability
MAX20022ATIA+ is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC power delivery, and body control unit designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX20022ATIA+ 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 MAX20022ATIA+ belongs to Analog Devices' automotive power-management IC portfolio, designed specifically for AEC-Q100-compliant, low-EMI, high-density point-of-load regulation in modern vehicle electronic control units.
FAQ
What is the switching frequency of the MAX20022ATIA+ and is it adjustable?
The MAX20022ATIA+ operates at a fixed 2.2MHz ±10% switching frequency. This frequency is factory-set and not user-adjustable via external components. However, the device supports synchronization to an external clock (1.7–2.5MHz range) via the SYNC pin, allowing system-level timing alignment. The 2.2MHz frequency enables use of small 1.5µH inductors and all-ceramic output capacitors, reducing board area and cost compared to lower-frequency alternatives.
Does the MAX20022ATIA+ support adjustable output voltages, and how is it configured?
Yes, the MAX20022ATIA+ supports adjustable output voltages from 1.0V to 4.0V per channel using external resistive feedback dividers connected to the OUTS1–OUTS4 pins. Each OUTS pin references an internal 1.000V precision bandgap. To set VOUT, use R1 = R2 × ((VOUT/1.000V) − 1), with R2 ≤ 100kΩ. A compensation capacitor must be placed across R1 per the datasheet formula. Fixed-output variants exist, but MAX20022ATIA+ is the adjustable version.
How does the MAX20022ATIA+ handle thermal protection and what is the shutdown threshold?
The MAX20022ATIA+ includes thermal-overload protection that shuts down all four buck converters when the junction temperature exceeds +185°C (typical), with 15°C hysteresis. Upon cooling below +170°C, the device automatically recovers and initiates a full soft-start sequence. This behavior is confirmed in the Electrical Characteristics table and Typical Operating Characteristics section of the datasheet. The exposed pad (EP) must be soldered to a robust ground plane to ensure effective heat transfer and avoid premature thermal shutdown under 1.0A per channel loads.
What are the key differences between MAX20022ATIA+ and MAX20021ATIA+?
The primary difference is switching frequency: MAX20022ATIA+ runs at 2.2MHz, while MAX20021ATIA+ runs at 3.2MHz. Additionally, MAX20021ATIA+ includes a factory-selectable input undervoltage monitor (UVM) with 4.3V threshold, whereas MAX20022ATIA+ has UVM disabled. Both share identical pinout, package, output current capability (1.0A/channel), and feature set including spread-spectrum, SYNC, and phase interleaving. Selection depends on EMI requirements (2.2MHz avoids AM band) and need for brownout detection.
Can the MAX20022ATIA+ be used in non-automotive applications such as industrial or medical equipment?
Yes, the MAX20022ATIA+ can be used in industrial and medical applications where its electrical specifications-3.0V–5.5V input, 1.0V–4.0V outputs, 1.0A per channel, and -40°C to +125°C operation-meet system requirements. While qualified to AEC-Q100 for automotive use, its robust protection features (OV/UV, OCP, OTP), low EMI, and high efficiency make it suitable for harsh-environment industrial controls or portable medical devices. However, functional safety certifications (e.g., ISO 26262) are not claimed for this part, so safety-critical medical functions require additional system-level validation.
MAX20022ATIA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 4
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 4V
- Current - Output:
- 1A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TQFN (5x5)
MAX20022ATIA+ FAQ
1.How can I place an order for MAX20022ATIA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20022ATIA+ 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 MAX20022ATIA+ reliable?
The price and inventory of MAX20022ATIA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20022ATIA+ is usually 5 days.
3.What payment methods are accepted for MAX20022ATIA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20022ATIA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20022ATIA+?
MAX20022ATIA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20022ATIA+ 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 MAX20022ATIA+?
For technical support, including MAX20022ATIA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20022ATIA+ requirements.
6.How does Aetrix verify that MAX20022ATIA+ is sourced from the original manufacturer or authorized distributors?
All MAX20022ATIA+ 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 MAX20022ATIA+ meets industry standards.
7.What is the process for return or replacement of MAX20022ATIA+?
All MAX20022ATIA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20022ATIA+, 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 MAX20022ATIA+ part is unused and in its original packaging.
Return procedure for MAX20022ATIA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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