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Analog Devices Inc./Maxim Integrated MAX20057ATIJ/VY+T
- Part No.:
- MAX20057ATIJ/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20057ATIJ/VY+T.pdf
- Description:
- 36V SYNC BOOST CONTROLLER WITH D
- Quantity:
- Payment:
- Shipping:
Inventory:2,733
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Product details
Overview
MAX20057ATIJ/VY+T from Analog Devices is an automotive-grade triple-output power management IC integrating two synchronous buck converters (5V/3.5A and 3.3V/2A) and a 36V asynchronous boost controller, operating over 3.5V–36V input with cold-crank support down to 2V battery voltage. It delivers regulated outputs for instrument clusters and start-stop systems using 180° out-of-phase switching at fixed 400kHz or 2.1MHz frequencies.
For engineers reviewing the MAX20057ATIJ/VY+T datasheet, MAX20057ATIJ/VY+T pinout, MAX20057ATIJ/VY+T application, or MAX20057ATIJ/VY+T equivalent, key selection criteria include its -40°C to +125°C operation, spread-spectrum EMI reduction, FSYNC programmable mode control (PWM/skip/PLL sync), and thermally enhanced 5mm × 5mm TQFN-EP package with exposed pad for automotive power integrity.
Technical Context
The MAX20057ATIJ/VY+T implements valley current-mode control for both buck converters, enabling stable regulation across wide input ranges including automotive cold-crank (down to 2V). Its 180° phase shift between Buck1 and Buck2 reduces input ripple, while the boost controller supports preboost during low-VIN conditions to maintain buck regulation.
FSYNC enables three operational modes: forced PWM (fixed frequency), skip mode (ultra-low 8–10μA quiescent current), and PLL-synchronized operation with external clock. Spread-spectrum modulation (±6% around fSW) is factory-configured and disabled during external synchronization, preserving EMI benefits without compromising timing fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V continuous; supports cold-crank operation down to 2V via boost pre-regulation |
| Buck1 Output | Fixed 5V ±1% at 3.5A; adjustable 1V–14V using FB1 divider; regulated feedback voltage = 1.00V |
| Buck2 Output | Fixed 3.3V ±1% at 2A; adjustable 1V–14V using FB2 divider; regulated feedback voltage = 1.00V |
| Boost Output | Fixed 10V ±0.25V or adjustable; 36V max input; current limit set by 50mV CSP threshold |
| Switching Frequency | Factory-set 400kHz or 2.1MHz; ±6% spread spectrum enabled; FSYNC programmable PLL sync |
| Quiescent Current | 10μA (5V buck on), 8μA (3.3V buck on), 30μA (all regulators active); 1μA in full shutdown |
| Thermal Protection | Thermal shutdown at 170°C with 20°C hysteresis; θJA = 27°C/W on 4-layer board |
Pinout & Package
MAX20057ATIJ/VY+T uses a thermally enhanced 5mm × 5mm, 28-pin TQFN-EP package (package code T2855Y+5C) with exposed pad connected to AGND for optimal heat dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Independent enable inputs | High-voltage tolerant (to 40V); control startup sequencing of Buck1, Buck2, and boost independently |
| FB1, FB2, FB3 | Feedback inputs | Regulated to 1.00V ±1.5%; support fixed output (connect to BIAS) or adjustable output (resistor divider) |
| LX1, LX2 | Buck switch node outputs | Drive external inductors; require ceramic bootstrap capacitors (BST1/BST2) for high-side gate drive |
| PGOOD1, PGOOD2 | Open-drain power-good indicators | Assert low when output drops below 93.5% of nominal; high-impedance above 95%; debounced 20μs |
| FSYNC | External clock synchronization input | Accepts 250kHz–2.6MHz signal; enables PLL lock, 180° phase alignment, and mode selection (skip/FPWM) |
| DL | Boost N-MOSFET gate driver | Sources/sinks 1.67A peak; driven by internal 5V BIAS LDO unless EXTVCC is used |
| EXTVCC | External bias supply switchover | Accepts 3.25V–5.5V; disables internal BIAS LDO to reduce power loss and improve light-load efficiency |
Key Features
| Feature | Design Value |
|---|---|
| 180° out-of-phase buck operation | Reduces input capacitor RMS current by ~30%, minimizing bulk capacitance and board area in high-power automotive rails |
| 20ns minimum on-time (buck) | Enables stable 3.3V output regulation at 2.1MHz without pulse-skipping artifacts during light loads |
| Cycle-by-cycle current limiting | Protects against short-circuit and overload with hiccup-mode recovery (10ms off-time) on all three power channels |
| Thermally optimized TQFN-EP | θJC = 3°C/W enables >2.2W continuous power dissipation at TJ ≤ 125°C on standard 4-layer PCB |
| Automotive-grade qualification | AEC-Q100 Grade 0 qualified (-40°C to +125°C ambient); designed for 95,000 hours at TJ = 125°C |
Applications
| Instrument Cluster | Start-Stop System |
|---|---|
|
Use Scenario: Digital gauge display with microcontroller, CAN transceiver, and backlight drivers requiring clean, sequenced 5V and 3.3V rails amid engine cranking transients. IC Role / Device Role / Timing Role: Triple-output PMIC providing independent, cold-crank-resilient 5V (MCU), 3.3V (CAN), and boosted 10V (backlight) with synchronized soft-start and PGOOD sequencing. Use Value: Maintains display functionality during 2V battery dips; 180° buck phasing cuts input ripple by 40%, reducing EMI filter size by 35%. |
Use Scenario: Powering body control module (BCM) electronics during repeated engine stop/start cycles with rapid VIN transitions from 14V to <3V. IC Role / Device Role / Timing Role: Preboost-enabled PMIC sustaining buck regulation through cold-crank; FSYNC-synchronized switching avoids AM band interference during radio operation. Use Value: Eliminates brownouts during cranking; spread-spectrum mode reduces peak EMI by 10dBµV in 500–1500kHz band without sacrificing efficiency. |
| Navigation Head Unit | Distributed DC Power System |
|
Use Scenario: Infotainment system with dual-core SoC, GPS receiver, and audio amplifier needing isolated, low-noise 1.1V, 3.3V, and 5V supplies. IC Role / Device Role / Timing Role: Primary PMIC delivering 5V/3.3V rails; boost output powers isolated buck-boost stage for 1.1V core rail; PGOOD signals enable downstream regulators. Use Value: 10μA quiescent current extends battery runtime in accessory-off mode; 2.1MHz operation allows 1.0µH inductors, shrinking total solution volume by 45%. |
Use Scenario: Centralized power architecture supplying multiple ECUs (ADAS camera, radar, gateway) from a single 12V battery rail with varying load profiles. IC Role / Device Role / Timing Role: High-integration PMIC serving as local power hub; EN1/EN2/EN3 allow staggered startup and fault isolation per subsystem. Use Value: Reduces bill-of-materials by consolidating three discrete regulators; thermal design supports 2.5W sustained load in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-output automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4333-AEC1 | Single 3.5A buck + dual 2A bucks; no integrated boost; 2.2MHz max fSW; QFN-24 package | Lacks cold-crank preboost capability; requires external boost for sub-3.5V operation | Choose when boost is unnecessary and board space favors smaller 24-pin footprint |
| TPS65321A-Q1 | Triple buck (3A/2A/1.5A); no boost; 2.2MHz fSW; includes watchdog and reset logic; HTSSOP-38 | No cold-crank support; larger package; adds system monitoring features not present in MAX20057ATIJ/VY+T | Choose when functional safety monitoring (ASIL-B) and reset supervision are required over cold-crank resilience |
Compared with MPQ4333-AEC1 and TPS65321A-Q1, the MAX20057ATIJ/VY+T uniquely integrates a 36V boost controller enabling true 2V cold-crank operation, while its 28-pin TQFN-EP offers superior thermal performance (θJC = 3°C/W) versus HTSSOP or smaller QFN alternatives-critical for sustained mid-power automotive loads.
Availability
MAX20057ATIJ/VY+T is available at Aetrix Electronics and suitable for automotive start-stop systems, instrument clusters, and distributed DC power systems requiring stable component supply across extended temperature and voltage stress conditions.
Supply support for MAX20057ATIJ/VY+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 MAX20057ATIJ/VY+T belongs to Analog Devices' automotive power management portfolio, engineered specifically for ASIL-compliant vehicle subsystems demanding cold-crank resilience, ultra-low quiescent current, and EMI-robust switching in compact form factors.
FAQ
What is the cold-crank capability of the MAX20057ATIJ/VY+T?
The MAX20057ATIJ/VY+T maintains regulated 5V and 3.3V outputs during automotive cold-crank events down to 2V battery voltage, enabled by its integrated 36V asynchronous boost controller. This preboost function sustains buck converter input voltage above dropout thresholds, ensuring uninterrupted operation of critical ECUs without external circuitry.
Does the MAX20057ATIJ/VY+T support external frequency synchronization?
Yes, the MAX20057ATIJ/VY+T supports external clock synchronization via its FSYNC pin, using a phase-locked loop to align Buck1, Buck2, and boost switching edges to an external source. The FSYNC input accepts 250kHz–2.6MHz signals and enables precise 180° phase alignment between buck converters for optimal input ripple cancellation.
How does the spread-spectrum feature work in the MAX20057ATIJ/VY+T?
The MAX20057ATIJ/VY+T implements factory-configured spread-spectrum modulation that varies switching frequency by ±6% around its nominal value (400kHz or 2.1MHz) using a triangular waveform. At 2.1MHz, the modulation period is 110μs; at 400kHz, it scales to 577.5μs. Spread spectrum is automatically disabled when FSYNC synchronization is active.
What is the purpose of the EXTVCC pin on the MAX20057ATIJ/VY+T?
The EXTVCC pin on the MAX20057ATIJ/VY+T allows bypassing the internal 5V BIAS LDO by applying an external 3.25V–5.5V supply-such as a buck converter output-to reduce internal power dissipation and improve light-load efficiency. When VEXTVCC drops below ~3V, the IC automatically re-enables the internal LDO and switches BIAS back to 5V.
Can the MAX20057ATIJ/VY+T operate with only one buck converter enabled?
Yes, the MAX20057ATIJ/VY+T supports independent enable control via EN1, EN2, and EN3 pins. Enabling only Buck1 (EN1 high) draws just 10μA typical quiescent current; enabling only Buck2 (EN2 high) draws 8μA. All three regulators can be disabled simultaneously for 1μA standby, making the MAX20057ATIJ/VY+T suitable for low-power automotive always-on domains.
MAX20057ATIJ/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller/Converter
- Voltage - Input:
- 3.5V ~ 36V
- Number of Outputs:
- 3
- Voltage - Output:
- 3.3V, 5V, 10V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 28-TQFN (5x5)
MAX20057ATIJ/VY+T FAQ
1.How can I place an order for MAX20057ATIJ/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20057ATIJ/VY+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 MAX20057ATIJ/VY+T reliable?
The price and inventory of MAX20057ATIJ/VY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20057ATIJ/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20057ATIJ/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20057ATIJ/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20057ATIJ/VY+T?
MAX20057ATIJ/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20057ATIJ/VY+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 MAX20057ATIJ/VY+T?
For technical support, including MAX20057ATIJ/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20057ATIJ/VY+T requirements.
6.How does Aetrix verify that MAX20057ATIJ/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20057ATIJ/VY+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 MAX20057ATIJ/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20057ATIJ/VY+T?
All MAX20057ATIJ/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20057ATIJ/VY+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 MAX20057ATIJ/VY+T part is unused and in its original packaging.
Return procedure for MAX20057ATIJ/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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