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Analog Devices Inc./Maxim Integrated MAX20022ATIB/V+
- Part No.:
- MAX20022ATIB/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20022ATIB/V+.pdf
- Description:
- IC REG BUCK ADJ QUAD 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:810
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Product details
Overview
MAX20022ATIB/V+ 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, integrated high- and low-side MOSFETs (125mΩ pMOS / 100mΩ nMOS), and full protection suite including OVP, UVM, UVLO, cycle-by-cycle current limiting, and thermal shutdown. It targets point-of-load regulation in ADAS camera modules, infotainment SoC power rails, and automotive domain controllers.
For engineers reviewing the MAX20022ATIB/V+ datasheet, MAX20022ATIB/V+ pinout, MAX20022ATIB/V+ application, or MAX20022ATIB/V+ equivalent, key selection considerations include its -40°C to +125°C AEC-Q100 qualified operation, 28-pin 5mm × 5mm TQFN-EP package with exposed thermal pad, spread-spectrum EMI reduction, 180° phase interleaving between OUT3/OUT4, and individual EN_/PG_ signals enabling precise power sequencing in multi-rail systems.
Technical Context
The MAX20022ATIB/V+ employs 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 tight transient response-demonstrated by ±1.5% output deviation under 1A load steps with 4µs recovery.
It features factory-trimmed 1000mV feedback reference (±0.5% initial accuracy), 3272-cycle soft-start (≈1.5ms at 2.2MHz), and synchronized 180° phasing on channels OUT3/OUT4 to minimize input ripple. The SYNC input accepts 1.7–2.5MHz external clocks for system-level timing alignment, while spread-spectrum modulation (±3% frequency dither at 1.5kHz) suppresses radiated emissions without impacting regulation stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive 5V rail or post-LDO supply without external pre-regulation. |
| Output Voltage Range | 1.0V to 4.0V - factory-programmable or resistor-adjustable via OUTS_ feedback pins for flexible SoC core/I/O rail assignment. |
| Switching Frequency | 2.2MHz (fixed) - enables all-ceramic design with 1.5µH inductors and eliminates audible noise in cabin applications. |
| Max Output Current | 1.0A per channel - sufficient for powering ARM Cortex-A76/A78 cores, LPDDR4 I/O, or automotive Ethernet PHYs. |
| Efficiency | Up to 95% at 500mA (VOUT=3.3V, VIN=5V) - minimizes thermal load in sealed enclosures and extends battery runtime in always-on modules. |
| Thermal Shutdown | +185°C junction temperature with 15°C hysteresis - ensures safe operation during sustained overload or ambient temperature excursions. |
| Operating Temperature | -40°C to +125°C - meets AEC-Q100 Grade 0 requirements for engine bay and front-end radar placement. |
Pinout & Package
MAX20022ATIB/V+ is housed in a 28-pin, 5mm × 5mm × 0.8mm TQFN-EP package with exposed thermal pad (EP = GND), optimized for automotive thermal cycling and board-level reliability. The package supports JEDEC-standard reflow and achieves θJA = 35°C/W on single-layer board and θJC = 3°C/W to the exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4 | Active-high enable inputs | Independent digital control of each buck channel; allows staggered startup and dynamic rail enable/disable during sleep/wake transitions. |
| PG1–PG4 | Open-drain power-good outputs | Assert low if output deviates >6% below or >10% above nominal; requires external 10kΩ pull-up to VA for logic-level signaling. |
| OUTS1–OUTS4 | Feedback voltage sense inputs | Connect to resistive divider (R1/R2) to set adjustable output; internal 1.000V reference enables ±3% accuracy over temp/load. |
| LX1–LX4 | Switching node terminals | High-impedance when disabled; require low-ESR ceramic capacitors placed adjacent to PV_/PGND pins to minimize switching loop area. |
| PV1–PV4 | Power input supplies per channel | Each accepts 3.0–5.5V; requires ≥2.2µF ceramic capacitor to PGND_ to suppress high-frequency input ripple. |
| PGND1–PGND4 | Channel-specific power grounds | Separate ground returns prevent cross-talk between high-current buck stages; must be tied to main GND at single point. |
| SYNC | External clock synchronization input | Accepts 1.7–2.5MHz signal to align switching edges with system clock; connect to PGND_ to use internal 2.2MHz oscillator. |
| SEL | Output voltage select for Buck 3 | Fixed to PGND_ for MAX20022; determines factory-set VOUT3 (1.8V or 2.65V); not toggled in operation. |
Key Features
| Feature | Design Value |
|---|---|
| Quad integrated buck converters | Four fully independent 1.0A channels with dedicated EN_/PG_/LX_/PV_/PGND pins - eliminates discrete DC-DC count and reduces BOM cost by ~40% vs. four separate ICs. |
| 180° phase interleaving (OUT3/OUT4) | Halves effective input ripple current and reduces required bulk input capacitance by up to 50%, easing EMI filter design. |
| Spread-spectrum modulation | ±3% frequency dither at 1.5kHz lowers peak radiated emissions by 10dB in narrowband scans - critical for CISPR 25 Class 5 compliance. |
| Factory-programmable reset timing | PG_ remains asserted for exactly 20,480 switching cycles after output regulation is restored - ensures reliable downstream logic initialization. |
| Hybrid load-line architecture | Reduces required output capacitance by 30% versus conventional buck designs while maintaining <100mV undershoot during 1A load transients. |
Applications
| ADAS Camera Module Power | Automotive Infotainment SoC Rail |
|---|---|
Use Scenario: Dual-camera system with ISP, MIPI CSI-2 interface, and image sensor requiring tightly regulated 1.2V core, 1.8V I/O, 2.65V analog, and 3.3V interface rails. IC Role / Device Role / Timing Role: Primary PMIC delivering sequenced, monitored, and EMI-optimized power to heterogeneous SoC subsystems. Use Value: Single-chip solution replaces four discrete buck converters, reduces PCB area by 35%, and meets CISPR 25 radiated emission limits without shielding. |
Use Scenario: Central infotainment head unit with quad-core application processor, GPU, DDR memory, and audio codec needing independent, dynamically controllable voltage rails. IC Role / Device Role / Timing Role: System-level power manager coordinating rail enable/disable, power-good handshaking, and thermal-aware throttling. Use Value: Individual EN_/PG_ signals enable precise boot sequence control; 2.2MHz operation avoids AM band interference in FM radio reception. |
| Automotive Domain Controller | Radar Signal Processing Unit |
Use Scenario: Zonal gateway controller integrating CAN FD, Ethernet AVB, and microcontroller with multiple voltage domains (1.1V CPU, 1.8V peripherals, 3.3V comms). IC Role / Device Role / Timing Role: Centralized power source providing fault-isolated, thermally robust, and AEC-Q100-compliant regulation. Use Value: Input undervoltage monitoring (UVM) triggers PG_ assertion at 4.3V to signal brownout before system reset; UVLO prevents erratic behavior below 2.77V. |
Use Scenario: 77GHz radar ECU with high-speed ADCs, DSP, and RF front-end requiring ultra-low-noise, fast-transient 1.0V and 1.2V supplies. IC Role / Device Role / Timing Role: Low-noise, high-PWM-frequency regulator minimizing switching artifacts in sensitive analog signal chains. Use Value: Forced-PWM mode eliminates frequency variation; 100mVpp output ripple at 100kHz enables clean ADC reference performance without additional LDO post-regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-buck PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20021ATIB/V+ | 3.2MHz switching frequency; includes UVM option and SEL-configurable VOUT3 (1.8V/2.65V); same pinout and package. | Better suited for systems requiring higher switching frequency to shrink magnetics or avoid 2–3MHz noise-sensitive bands. | Select MAX20021ATIB/V+ when 3.2MHz operation or factory-selectable UVM is required; otherwise MAX20022ATIB/V+ provides optimal EMI/noise trade-off at 2.2MHz. |
| TPS653221AQPWPRQ1 | 3.0V–5.5V input; 4×1.2A bucks; 2.1MHz switching; integrated watchdog and fault reporting; different pinout (32-pin HTSSOP). | Targets safety-critical ASIL-B systems with diagnostic coverage; lacks spread-spectrum but offers enhanced functional safety features. | Choose TPS653221AQPWPRQ1 only when ISO 26262 ASIL-B compliance and built-in diagnostics are mandatory; MAX20022ATIB/V+ offers superior EMI performance and smaller footprint. |
Compared with MAX20021ATIB/V+, the MAX20022ATIB/V+ trades higher switching frequency for lower EMI via spread-spectrum and fixed 2.2MHz operation-ideal for cost-sensitive, space-constrained ADAS modules. Against TPS653221AQPWPRQ1, it delivers better radiated emissions performance and 30% smaller PCB area but omits functional safety registers and watchdog logic.
Availability
MAX20022ATIB/V+ is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC power delivery, and domain controller point-of-load regulation requiring stable component supply across extended temperature and long production lifecycles.
Supply support for MAX20022ATIB/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 with precision power, sensing, and connectivity solutions.
The MAX20022ATIB/V+ belongs to Analog Devices' automotive power-management IC portfolio, engineered specifically for AEC-Q100 Grade 0 operation in demanding vehicle environments-emphasizing EMI robustness, thermal resilience, and seamless integration with modern SoCs and microcontrollers.
FAQ
What is the switching frequency of the MAX20022ATIB/V+ and is it adjustable?
The MAX20022ATIB/V+ operates at a fixed 2.2MHz switching frequency. This frequency is not user-adjustable via external components or registers-it is factory-set and cannot be changed. However, the device supports synchronization to an external clock (1.7–2.5MHz range) via the SYNC pin, allowing system-level timing alignment without altering the internal oscillator's base frequency. The 2.2MHz operation enables compact all-ceramic designs and avoids the AM radio band.
Does the MAX20022ATIB/V+ support adjustable output voltages, and how is it configured?
Yes, the MAX20022ATIB/V+ supports resistor-programmable output voltages from 1.0V to 4.0V using external feedback dividers connected to the OUTS1–OUTS4 pins. Each OUTS_ pin references an internal 1000mV precision bandgap; the output voltage is calculated as VOUT = 1.0V × (1 + R1/R2), where R2 ≤ 100kΩ. A 15pF capacitor must be placed across R1 for stability. Fixed-output versions are also available, but the MAX20022ATIB/V+ variant is specifically designed for adjustable configurations.
How does the MAX20022ATIB/V+ handle power sequencing across its four outputs?
The MAX20022ATIB/V+ provides individual EN1–EN4 enable inputs and PG1–PG4 open-drain power-good outputs to support flexible, user-defined sequencing. During startup, EN1 initiates first, followed by staggered delays (24,576 switching cycles) before EN2–EN4 activate-preventing simultaneous inrush current. Each PG_ asserts high only when its respective output reaches ±6% regulation, enabling downstream logic to gate subsequent rail enables. This eliminates need for external sequencers in most automotive applications.
What protection features are integrated into the MAX20022ATIB/V+?
The MAX20022ATIB/V+ integrates comprehensive protection: input overvoltage protection (OVP) trips at 5.8V; input undervoltage monitoring (UVM) asserts PG_ low at 4.3V (brownout warning); undervoltage lockout (UVLO) disables all outputs below 2.77V; cycle-by-cycle current limiting (1.4–2.0A threshold); and thermal shutdown at +185°C with 15°C hysteresis. All protections are fully autonomous-no software or external circuitry required-and restore automatically upon fault clearance.
Is the MAX20022ATIB/V+ AEC-Q100 qualified, and what grade does it meet?
Yes, the MAX20022ATIB/V+ is AEC-Q100 qualified and rated for Grade 0 operation (-40°C to +125°C junction temperature). This qualification covers stress testing for automotive environmental reliability-including temperature cycling, humidity bias, and mechanical shock-ensuring suitability for under-hood, front-end, and cabin-mounted electronic control units. The device's 28-pin TQFN-EP package with exposed thermal pad is specifically validated for automotive thermal cycling performance.
MAX20022ATIB/V+ 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, 1A, 1A, 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)
MAX20022ATIB/V+ FAQ
1.How can I place an order for MAX20022ATIB/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20022ATIB/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 MAX20022ATIB/V+ reliable?
The price and inventory of MAX20022ATIB/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20022ATIB/V+ is usually 5 days.
3.What payment methods are accepted for MAX20022ATIB/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20022ATIB/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20022ATIB/V+?
MAX20022ATIB/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20022ATIB/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 MAX20022ATIB/V+?
For technical support, including MAX20022ATIB/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20022ATIB/V+ requirements.
6.How does Aetrix verify that MAX20022ATIB/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20022ATIB/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 MAX20022ATIB/V+ meets industry standards.
7.What is the process for return or replacement of MAX20022ATIB/V+?
All MAX20022ATIB/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20022ATIB/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 MAX20022ATIB/V+ part is unused and in its original packaging.
Return procedure for MAX20022ATIB/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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