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Analog Devices Inc./Maxim Integrated MAX20057ATIC/VY+T
- Part No.:
- MAX20057ATIC/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20057ATIC/VY+T.pdf
- Description:
- IC REG BOOST ADJ 3.5A DL 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,228
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Product details
Overview
MAX20057ATIC/VY+T from Analog Devices is an automotive-grade triple-output power management IC integrating two synchronous buck converters (3.5A/2A) and a 36V asynchronous boost controller, operating from 3.5V to 36V input with cold-crank support down to 2V battery voltage. It delivers fixed 5V/3.3V outputs or adjustable 1V–14V outputs, features 2.1MHz/400kHz selectable switching frequency, and operates across –40°C to +125°C for instrument clusters and start-stop systems.
For engineers reviewing the MAX20057ATIC/VY+T datasheet, MAX20057ATIC/VY+T pinout, MAX20057ATIC/VY+T application, or MAX20057ATIC/VY+T equivalent, key selection criteria include cold-crank regulation capability, phase-shifted dual-buck architecture, spread-spectrum EMI reduction, thermal shutdown at 170°C, and EXTVCC switchover for efficiency optimization in automotive power rails.
Technical Context
The MAX20057ATIC/VY+T implements valley current-mode control for both buck converters, operating 180° out-of-phase to minimize input ripple. Its boost controller uses asynchronous N-MOSFET drive with 50mV current-sense threshold and supports SEPIC configuration for wide-input regulation during engine stop-start events.
FSYNC enables three operational modes: forced PWM (fixed-frequency), skip mode (ultra-low quiescent current), and PLL-synchronized external clock locking. Spread spectrum modulation (±6% at 2.1MHz) reduces EMI without compromising cold-crank performance or AM-band immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V; supports operation through automotive cold-crank down to 2.05V with preboost enabled |
| Buck1 Output Current | Up to 3.5A continuous; enables mid-power rail for infotainment processors or ADAS SoCs |
| Buck2 Output Current | Up to 2A continuous; powers auxiliary subsystems like display timing controllers or CAN transceivers |
| Switching Frequency | Fixed 2.1MHz or 400kHz; 2.1MHz enables compact 1µH inductors and <10mVpp output ripple |
| Quiescent Current | 30µA with all regulators active; critical for always-on vehicle networks meeting OEM leakage budgets |
| Thermal Shutdown | 170°C with 20°C hysteresis; ensures safe derating in sealed junction-box environments |
| PGOOD Accuracy | ±1.5% window (93.5%–95% of VOUT); provides reliable sequencing signal for downstream logic |
Pinout & Package
MAX20057ATIC/VY+T is housed in a thermally enhanced 5mm × 5mm, 28-pin TQFN-EP package with exposed pad for PCB-level heat dissipation. The EP must be soldered to a solid ground plane per land pattern 90-0027.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Independent enable inputs | Allow precise power-rail sequencing; each controls one regulator without cross-talk |
| FB1, FB2, FB3 | Feedback voltage sense inputs | Regulated to 1.0V ±1.5%; enable fixed or resistor-divider-adjustable output voltages |
| LX1, LX2 | Buck switch-node connections | Drive external high-side MOSFETs; require low-ESR ceramic bootstrap capacitors (BST1/BST2) |
| DL | Boost low-side gate driver output | Sources/sinks 1.67A peak; drives logic-level N-MOSFETs directly without level-shifting |
| PGOOD1, PGOOD2 | Open-drain power-good indicators | Assert low during soft-start or fault; require 10kΩ pull-up for clean logic-level signaling |
| FSYNC | External clock synchronization input | Accepts 250kHz–2.6MHz signals; locks buck phase alignment and enables spread-spectrum pass-through |
Key Features
| Feature | Design Value |
|---|---|
| Phase-shifted dual-buck architecture | 180° out-of-phase operation reduces input capacitor RMS current by ~30%, lowering thermal stress |
| Cold-crank preboost support | Boost controller maintains buck regulation at battery voltages as low as 2V, enabling uninterrupted operation during engine cranking |
| EXTVCC switchover | Allows bypassing internal 5V BIAS LDO using external 3.25V–5.5V supply, reducing IC power dissipation by up to 40% |
| Valley current-mode control | Provides inherent cycle-by-cycle current limiting and stable operation across wide VIN/VOUT ratios (e.g., 24V→3.3V) |
| Hiccup-mode overcurrent protection | Disables faulty channel for 10ms then auto-retries; prevents thermal runaway during sustained short-circuit conditions |
Applications
| Automotive Start-Stop System | Instrument Cluster |
|---|---|
Use Scenario: Powering microcontroller, graphics processor, and backlight drivers during engine restart cycles where battery dips to 2.2V. IC Role / Device Role / Timing Role: Triple-output PMIC providing sequenced 5V, 3.3V, and 10V rails with cold-crank resilience and PGOOD-driven enable sequencing. Use Value: Eliminates need for discrete boost stage; maintains full functionality throughout 500ms cranking event without brownout or reset. | Use Scenario: Supplying TFT-LCD controller, touch interface, and CAN-FD communication module in digital dashboards. IC Role / Device Role / Timing Role: Dual-buck converter delivering low-noise 3.3V/5V with 2.1MHz switching to avoid AM radio band interference. Use Value: Reduces EMI filter component count by 40% versus 400kHz designs while meeting CISPR-25 Class 5 radiated emissions limits. |
| Navigation Head Unit | Distributed DC Power System |
Use Scenario: Powering GPS baseband SoC, audio codec, and Wi-Fi/BT module in infotainment head units with always-on wake-up capability. IC Role / Device Role / Timing Role: High-efficiency PMIC with 30µA quiescent current in all-rails-active standby mode and fast wake-up response. Use Value: Extends battery drain time beyond 72 hours in key-off state while supporting instant-on user experience. | Use Scenario: Centralized power hub supplying multiple ECUs (e.g., body control, lighting, HVAC) via daisy-chained 12V distribution. IC Role / Device Role / Timing Role: Boost controller generating stable 12V from variable 6–16V vehicle bus, feeding downstream point-of-load converters. Use Value: Enables single-stage conversion from degraded battery (e.g., 7.2V) to regulated 12V, eliminating cascaded buck stages and improving system efficiency by 8–12%. |
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 controller; requires external boost for cold-crank | Requires additional IC and layout area for preboost function; lacks 2V cold-crank support | Select when boost is unnecessary or implemented separately; lower BOM cost but higher system complexity |
| TPS65381A-Q1 | Three buck converters only; no boost; includes watchdog timer and SPI interface; 40V max input | Cannot regulate during cold-crank below 4.5V; suited for non-critical domains without cranking requirements | Select for ASIL-B safety-critical domains needing diagnostics; not suitable for crank-ready designs |
Compared with MPQ4333-AEC1 and TPS65381A-Q1, the MAX20057ATIC/VY+T uniquely integrates cold-crank-capable boost control with phase-shifted dual bucks in one package-enabling single-chip crank-ready power for instrument clusters without external boost circuitry or layout overhead.
Availability
MAX20057ATIC/VY+T is available at Aetrix Electronics and suitable for automotive start-stop systems, instrument clusters, navigation head units, and distributed DC power systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX20057ATIC/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 is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving automotive, industrial, and communications markets with robust, AEC-Q100-qualified components.
The MAX20057ATIC/VY+T belongs to Analog Devices' automotive power management portfolio, designed specifically for crank-ready, multi-rail power delivery in safety-critical vehicle domains including digital cockpits and ADAS edge nodes.
FAQ
What is the minimum input voltage supported by MAX20057ATIC/VY+T during cold-crank conditions?
The MAX20057ATIC/VY+T supports operation down to 2.05V input voltage during cold-crank when the boost controller is enabled and configured for preboost. This allows both buck converters to remain in regulation even as the vehicle battery sags below 3V, ensuring uninterrupted power to critical systems like instrument clusters and ADAS sensors. The 2.05V UVLO falling threshold is factory-configured and cannot be adjusted externally.
Does MAX20057ATIC/VY+T support external frequency synchronization, and what are the valid FSYNC input ranges?
Yes, MAX20057ATIC/VY+T supports external frequency synchronization via the FSYNC pin. For 2.1MHz internal operation, FSYNC accepts sync pulses between 1.8MHz and 2.6MHz with ≥100ns minimum pulse width. For 400kHz operation, valid FSYNC range is 250kHz to 550kHz with ≥1.5µs minimum pulse width. The device uses a PLL to lock internal clocks to the external signal, maintaining 180° phase shift between buck channels.
How does the EXTVCC pin affect power efficiency and thermal performance of MAX20057ATIC/VY+T?
Connecting a 3.25V–5.5V supply to EXTVCC disables the internal 5V BIAS LDO, reducing MAX20057ATIC/VY+T's internal power dissipation by up to 40% and improving light-load efficiency. When powered from a buck output (e.g., 5V rail), EXTVCC also scales internal bias current with duty cycle, further lowering quiescent consumption. Thermal resistance θJA drops from 27°C/W to ~22°C/W under typical board conditions with EXTVCC active.
What protection features are integrated into MAX20057ATIC/VY+T, and how do they respond to faults?
MAX20057ATIC/VY+T integrates cycle-by-cycle current limiting, hiccup-mode overcurrent protection, thermal shutdown at 170°C (20°C hysteresis), undervoltage lockout on BIAS (3.1V rising/2.6V falling), and boost UVLO (4.5V rising). During sustained overcurrent, the affected channel shuts down for 10ms then auto-retries. Thermal shutdown disables all regulators until junction cools by 20°C. PGOOD pins assert low during faults or soft-start, enabling fail-safe system sequencing.
Can MAX20057ATIC/VY+T generate adjustable output voltages, and what is the feedback reference voltage?
Yes, MAX20057ATIC/VY+T supports adjustable outputs for all three rails: Buck1 and Buck2 accept 1V–14V via external resistor dividers on FB1/FB2, and Boost accepts adjustable output via FB3 divider. The internal feedback reference voltage is tightly regulated at 1.000V ±1.5% (0.985V–1.015V) across –40°C to +125°C. This precision enables ±1% output accuracy with standard 1% resistors, critical for automotive MCU core supplies.
MAX20057ATIC/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
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 14V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 28-TQFN (5x5)
MAX20057ATIC/VY+T FAQ
1.How can I place an order for MAX20057ATIC/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20057ATIC/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 MAX20057ATIC/VY+T reliable?
The price and inventory of MAX20057ATIC/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 MAX20057ATIC/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20057ATIC/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20057ATIC/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20057ATIC/VY+T?
MAX20057ATIC/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20057ATIC/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 MAX20057ATIC/VY+T?
For technical support, including MAX20057ATIC/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20057ATIC/VY+T requirements.
6.How does Aetrix verify that MAX20057ATIC/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20057ATIC/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 MAX20057ATIC/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20057ATIC/VY+T?
All MAX20057ATIC/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20057ATIC/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 MAX20057ATIC/VY+T part is unused and in its original packaging.
Return procedure for MAX20057ATIC/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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