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Analog Devices Inc./Maxim Integrated MAX20057ATIC/VY+
- Part No.:
- MAX20057ATIC/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20057ATIC/VY+.pdf
- Description:
- IC REG BOOST ADJ 3.5A DL 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,420
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Product details
Overview
MAX20057ATIC/VY+ from Analog Devices is an automotive-grade triple-output power management IC integrating two synchronous buck converters (5V/3.3V fixed or 1–14V adjustable, 3.5A/2A) and a 36V asynchronous boost controller with cold-crank support down to 2V input. It operates from 3.5V to 36V input, delivers 95% max duty cycle in dropout, and targets mid-to-high-power automotive systems requiring robust regulation during start-stop and cold-crank events.
For engineers reviewing the MAX20057ATIC/VY+ datasheet, MAX20057ATIC/VY+ pinout, MAX20057ATIC/VY+ application, or MAX20057ATIC/VY+ equivalent, key selection considerations include its dual-phase 2.1MHz/400kHz switching capability, integrated PGOOD indicators per buck rail, spread-spectrum EMI reduction, thermally enhanced 5mm × 5mm TQFN-EP package, and validated crank-ready operation at 2V battery input.
Technical Context
The MAX20057ATIC/VY+ employs valley current-mode control for both buck converters, operating 180° out-of-phase to minimize input ripple across 3.5V–36V input range. Its boost controller uses asynchronous current-mode architecture with programmable UVLO (4.5V rise / 2.05V fall) and supports SEPIC configuration for wide-input regulation.
FSYNC enables PLL-based synchronization to external clocks (250kHz–2.6MHz), while spread-spectrum modulation (±6% at 2.1MHz) reduces peak EMI without compromising regulation. The IC integrates a 5V internal BIAS LDO with EXTVCC switchover, enabling efficiency optimization by bypassing the LDO with external 3.25–5.5V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V continuous; supports cold-crank operation down to 2.05V via boost pre-regulation |
| Buck1 Output | Fixed 5V or adjustable 1V–14V; 3.5A continuous; 20ns min on-time enables stable 3.3V @ 2.1MHz |
| Buck2 Output | Fixed 3.3V or adjustable 1V–14V; 2A continuous; 180° phase shift relative to Buck1 reduces input capacitor stress |
| Boost Controller | 36V max input; fixed 10V or adjustable output; 50mV current-limit threshold minimizes sense resistor loss |
| Switching Frequency | Factory-set 400kHz or 2.1MHz; FSYNC enables PLL sync to external clock with 1:1 ratio and 50% duty-cycle phase alignment |
| Thermal Protection | Thermal shutdown at 170°C with 20°C hysteresis; θJA = 27°C/W on 4-layer board ensures reliable operation in under-hood environments |
| Quiescent Current | 30μA typ with all regulators enabled; 1μA in full disable mode-meets OEM standby power budgets |
Pinout & Package
Package: 5mm × 5mm, 28-pin thermally enhanced TQFN-EP (exposed pad grounded); RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Independent enable inputs | High-voltage tolerant (to 40V); allow precise sequencing of buck1, buck2, and boost rails |
| FB1, FB2, FB3 | Feedback voltage inputs | Regulated to 1.0V ±15mV; support fixed outputs (via BIAS tie) or resistor-divider adjustment (1V–14V) |
| LX1, LX2 | Power switch node connections | Drive external high-side MOSFETs; require low-ESR ceramic bootstrap capacitors (BST1/BST2) for gate drive |
| PGOOD1, PGOOD2 | Open-drain power-good indicators | Assert low when output falls below 93.5% of nominal; high-impedance above 95%-enables safe downstream power-up |
| FSYNC | External clock synchronization input | Accepts 250kHz–2.6MHz square wave; controls FPWM/skip mode and locks phase between buck channels |
| DL | N-MOSFET gate driver output | Sources/sinks 1.67A peak; drives external boost switch; powered by BIAS or EXTVCC |
| COMP | Boost error amplifier output | Requires external RC compensation network for stability across load and input transients |
| AGND, PGND1–PGND3 | Analog and power ground terminals | Separate AGND (quiet reference) and dedicated PGNDs per converter minimize noise coupling and thermal crosstalk |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase buck architecture | 180° interleaving cuts input RMS current by ~30%, reducing bulk capacitor size and ESR heating |
| Cold-crank preboost support | Boost maintains buck input above regulation threshold during 2V battery dips-enables uninterrupted operation in start-stop cycles |
| Spread-spectrum modulation | ±6% frequency dither centered at 2.1MHz reduces peak EMI amplitude by >10dB, easing AM-band compliance |
| EXTVCC switchover | Allows external 3.25–5.5V supply to power internal circuitry-cuts quiescent dissipation and improves light-load efficiency |
| Valley current-mode control | Provides inherent cycle-by-cycle current limiting and fast transient response without slope compensation |
Applications
| Automotive Start-Stop System | Instrument Cluster |
|---|---|
Use Scenario: Powering microcontroller, display, and CAN transceivers during engine restart after stop, where battery voltage drops to 2–6V. IC Role / Device Role / Timing Role: Triple-output PMIC provides regulated 5V (MCU core), 3.3V (peripherals), and 10V (LCD bias) from unstable battery; boost sustains buck inputs during cranking. Use Value: Eliminates need for discrete preboost stage; guarantees uninterrupted operation through 2V cold-crank dips per ISO 16750-2. | Use Scenario: Supplying digital logic, analog sensors, and backlight drivers in centralized dashboard electronics. IC Role / Device Role / Timing Role: Integrates three independent power rails with individual enable and PGOOD signals-enabling safe, sequenced power-up of MCU, graphics processor, and touch controller. Use Value: Reduces BOM count by 7+ discrete regulators; 5mm × 5mm footprint saves >40% PCB area vs. discrete solution. |
| Navigation and Radio Head Units | Distributed DC Power Systems |
Use Scenario: Delivering clean, low-noise 3.3V and 5V rails to RF front-end, audio DAC, and GPS receiver in infotainment modules. IC Role / Device Role / Timing Role: Dual-phase buck converters suppress input ripple into sensitive analog sections; spread spectrum avoids AM band interference. Use Value: Meets CISPR 25 Class 5 radiated emissions without added shielding or ferrites-reducing system cost and weight. | Use Scenario: Centralized power distribution in ADAS domain controllers or gateway ECUs with multiple voltage domains. IC Role / Device Role / Timing Role: Serves as primary power hub-generating local 5V/3.3V/10V rails while supporting hot-swap sequencing and fault isolation per channel. Use Value: Integrated undervoltage lockout, thermal shutdown, and hiccup-mode overcurrent protection replace 3 external protection ICs. |
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 fixed freq only; no spread spectrum | Lacks cold-crank preboost capability; requires external boost for sub-6V operation | Select when boost is unnecessary and board space allows separate boost IC |
| TPS65321A-Q1 | Three buck converters (3A/2A/1.5A); no boost; 2.1MHz; includes watchdog and reset generator | No cold-crank support; limited to 5.5V max input; lacks PGOOD per rail | Select for simpler systems needing safety monitoring but not wide-input regulation |
Compared with MPQ4333-AEC1 and TPS65321A-Q1, the MAX20057ATIC/VY+ uniquely combines integrated 36V boost with dual-phase bucks in one package-enabling single-chip crank-ready power for demanding automotive applications where input voltage can collapse to 2V.
Availability
MAX20057ATIC/VY+ 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+ 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 digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20057 is part of Analog Devices' automotive power management portfolio, designed specifically for AEC-Q100 Grade-1 (−40°C to +125°C) applications requiring high integration, cold-crank resilience, and EMI robustness in modern vehicle electrical architectures.
FAQ
What input voltage range does the MAX20057ATIC/VY+ support, and how does it handle cold-crank conditions?
The MAX20057ATIC/VY+ operates from 3.5V to 36V under normal conditions and supports cold-crank operation down to 2.05V input via its integrated 36V asynchronous boost controller. During cranking, the boost pre-regulates the input to maintain buck converter regulation-ensuring continuous 5V and 3.3V output even when battery voltage collapses to 2V, as required by ISO 16750-2.
Does the MAX20057ATIC/VY+ support external clock synchronization, and what are the valid frequency ranges?
Yes, the MAX20057ATIC/VY+ supports external clock synchronization via the FSYNC pin. It accepts frequencies from 250kHz to 550kHz when configured for 400kHz internal operation, and from 1.8MHz to 2.6MHz when configured for 2.1MHz operation. The device uses a PLL to lock internal switching to the external clock with 1:1 ratio and precise phase alignment between buck channels.
How does the MAX20057ATIC/VY+ reduce electromagnetic interference (EMI) in sensitive automotive environments?
The MAX20057ATIC/VY+ reduces EMI through three integrated features: 2.1MHz fixed-frequency operation (avoiding AM band), spread-spectrum modulation (±6% frequency dither), and 180° interleaved buck phases that cancel input ripple. These features collectively lower peak radiated emissions-enabling compliance with CISPR 25 Class 5 without additional filtering or shielding in most automotive layouts.
What is the purpose of the EXTVCC pin on the MAX20057ATIC/VY+, and how should it be used?
The EXTVCC pin on the MAX20057ATIC/VY+ allows bypassing the internal 5V BIAS LDO by connecting an external 3.25V–5.5V supply-reducing internal power dissipation and improving light-load efficiency. When a valid voltage is applied, the IC switches BIAS internally to EXTVCC and disables the LDO. If EXTVCC drops below ~3V, the LDO automatically re-enables to maintain regulation.
Can the MAX20057ATIC/VY+ operate with adjustable output voltages, and what is the supported range?
Yes, the MAX20057ATIC/VY+ supports adjustable outputs for both buck converters (1V to 14V) and the boost controller (adjustable option). Feedback pins FB1 and FB2 are regulated to 1.0V ±15mV, enabling precise resistor-divider programming. The boost output can be set using an external divider on FB3, with factory-fixed 10V also available. All adjustable configurations retain full protection and thermal performance.
MAX20057ATIC/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Strip
- 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+ FAQ
1.How can I place an order for MAX20057ATIC/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20057ATIC/VY+ 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+ reliable?
The price and inventory of MAX20057ATIC/VY+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20057ATIC/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20057ATIC/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20057ATIC/VY+?
MAX20057ATIC/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20057ATIC/VY+ 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+?
For technical support, including MAX20057ATIC/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20057ATIC/VY+ requirements.
6.How does Aetrix verify that MAX20057ATIC/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20057ATIC/VY+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX20057ATIC/VY+?
All MAX20057ATIC/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20057ATIC/VY+, 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+ part is unused and in its original packaging.
Return procedure for MAX20057ATIC/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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