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Analog Devices Inc./Maxim Integrated MAX20057ATIB/VY+T
- Part No.:
- MAX20057ATIB/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20057ATIB/VY+T.pdf
- Description:
- IC REG BOOST ADJ 3.5A DL 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,123
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Product details
Overview
MAX20057ATIB/VY+T 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 10V fixed output. It operates from 3.5V to 36V input, supports cold-crank down to 2V battery via preboost, and delivers phase-shifted 180° operation for reduced input ripple - used in instrument clusters and start-stop systems requiring high reliability under wide voltage transients.
For engineers reviewing the MAX20057ATIB/VY+T datasheet, MAX20057ATIB/VY+T pinout, MAX20057ATIB/VY+T application, or MAX20057ATIB/VY+T equivalent, key selection considerations include its dual-buck + boost topology, 2.1MHz/400kHz selectable switching frequency, spread-spectrum EMI reduction, thermal shutdown at 170°C, and automotive AEC-Q100 qualification across –40°C to +125°C.
Technical Context
The MAX20057ATIB/VY+T implements valley-current-mode control for both buck converters, enabling stable regulation at high input-to-output voltage ratios and supporting forced PWM, skip mode, and external clock synchronization via FSYNC. Its boost controller uses current-mode architecture with 50mV current-sense threshold and 60ns minimum on/off times, optimized for cold-crank support and SEPIC configurations.
Phase-locked synchronization allows precise 180° interleaving between Buck1 and Buck2 using external clock edges, while internal spread spectrum (±6% modulation) reduces EMI without compromising regulation. The IC integrates a 5V BIAS LDO with EXTVCC switchover capability and undervoltage lockout thresholds of 3.1V (rising) and 2.6V (falling) for bias rail stability.
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/3.3V or adjustable 1V–14V; 3.5A continuous; 95% max duty cycle enables dropout operation |
| Buck2 Output | Fixed 5V/3.3V or adjustable 1V–14V; 2A continuous; 180° out-of-phase with Buck1 to minimize input ripple |
| Boost Output | Fixed 10V (VOUT3 = 9.75–10.2V); 36V capable; supports SEPIC configuration for wide-input regulation |
| Switching Frequency | Selectable 400kHz or 2.1MHz; ±6% spread spectrum option; PLL-synchronized to external FSYNC clock |
| Quiescent Current | 10μA (5V buck active), 8μA (3.3V buck active), 30μA (all regulators active) - enables low-power standby |
| Thermal Protection | Thermal shutdown at 170°C with 20°C hysteresis; junction-to-ambient θJA = 27°C/W on 4-layer board |
Pinout & Package
MAX20057ATIB/VY+T is housed in a thermally enhanced 5mm × 5mm, 28-pin TQFN-EP package with exposed pad (EP) connected to AGND for improved heat dissipation. Pin count and layout match T2855Y+5C land pattern (90-0027).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Digital enable inputs | High-voltage tolerant (to 40V); independently control Buck1, Buck2, and Boost; support power sequencing |
| FB1, FB2, FB3 | Feedback inputs | Regulated to 1.0V (±1.5%); enable fixed or adjustable outputs via resistor dividers; leakage <1μA |
| LX1, LX2 | Switch node connections | Drive external inductors; support 20ns min on-time at 2.1MHz; require ceramic bootstrap caps (BST1/BST2) |
| PGOOD1, PGOOD2 | Open-drain power-good indicators | Assert low when output drops below 93.5% of nominal; high-impedance above 95%; 20μs debounce |
| FSYNC | External clock sync input | Accepts 250kHz–2.6MHz signal; enables PLL lock; 50% duty cycle yields 180° phase shift between bucks |
| BIAS, EXTVCC | Internal LDO output / external supply switchover | 5V BIAS LDO (3.1V UVLO rising); EXTVCC bypasses LDO when 3.25–5.5V applied, reducing dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Cold-crank ready preboost | Boost maintains buck regulation during battery dips to 2V; enables uninterrupted operation in automotive start-stop |
| EMI-optimized switching | 2.1MHz fixed frequency + spread spectrum (±6%) + 20ns min on-time eliminates AM band interference |
| Interleaved buck architecture | 180° phase shift between Buck1 and Buck2 cuts input RMS current ripple by ~30%, easing filter design |
| Low-quiescent-current modes | 30μA total supply current with all regulators active; 1μA in full disable - extends battery life in always-on modules |
| Robust protection suite | Cycle-by-cycle current limit, hiccup-mode short-circuit recovery, thermal shutdown (170°C), and UVLO on all rails |
Applications
| Automotive Instrument Cluster | Start-Stop System Power Supply |
|---|---|
Use Scenario: Digital gauge display with microcontroller, CAN transceiver, and backlight drivers requiring stable 5V and 3.3V rails amid engine cranking. IC Role / Device Role / Timing Role: Triple-output PMIC providing regulated 5V (MCU core), 3.3V (peripherals), and boosted 10V (LCD bias) with cold-crank hold-up. Use Value: Maintains full functionality during 2V battery transients; 2.1MHz switching enables compact 2.2μH inductors and 10μF ceramic output caps. |
Use Scenario: Powering body control module (BCM) electronics that must remain operational during engine restart (<100ms, 6V battery dip). IC Role / Device Role / Timing Role: Preboost controller sustains buck input above dropout during cranking; buck converters deliver sequenced 5V/3.3V to MCU and sensors. Use Value: Eliminates need for separate backup capacitor bank; integrated UVLO and thermal protection reduce system-level fault handling complexity. |
| Distributed DC Power Architecture | Navigation/Radio Head Unit |
Use Scenario: Centralized 12V bus powering multiple remote ECUs with independent voltage requirements (e.g., 5V camera, 3.3V radar, 10V RF front-end). IC Role / Device Role / Timing Role: Local PMIC converting 12V to three isolated, regulated outputs; FSYNC enables system-wide clock synchronization. Use Value: Reduces wiring harness weight via localized conversion; spread spectrum minimizes conducted EMI coupling into adjacent analog circuits. |
Use Scenario: Infotainment head unit needing clean 3.3V for audio codec, 5V for display interface, and noise-immune 10V for tuner VCO supply. IC Role / Device Role / Timing Role: High PSRR buck regulators + boost-derived 10V rail suppress switching noise; 20ns min on-time prevents sub-harmonic instability at light load. Use Value: Meets CISPR 25 Class 5 radiated emissions limits without ferrite beads; PGOOD signals coordinate safe boot sequencing. |
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 |
|---|---|---|---|
| MAX20090ATP/VY+ | Single 3.3V/5V buck + boost; no second buck; 2.2MHz only; lower current (2.5A/1.5A) | Suitable for lower-power infotainment modules without dual-core MCU requirements | Choose when only one buck rail is needed and board space is constrained |
| TPS653221A-Q1 | Three bucks (3A/2A/1.5A) + LDO; no boost; 2.2MHz; integrated watchdog and reset logic | Targeted at ASIL-B safety-critical domains (e.g., ADAS domain controllers) | Prefer when functional safety compliance (ISO 26262) and built-in diagnostics are required |
Compared with MAX20057ATIB/VY+T, MAX20090ATP/VY+ offers smaller footprint but lacks interleaved buck capability and cold-crank boost headroom, while TPS653221A-Q1 provides safety features and tighter integration at the expense of missing preboost functionality essential for deep cold-crank support.
Availability
MAX20057ATIB/VY+T is available at Aetrix Electronics and suitable for automotive instrument clusters, start-stop systems, distributed power architectures, and navigation/radio head units requiring stable component supply across extended temperature and voltage stress conditions.
Supply support for MAX20057ATIB/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 digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets with precision power, sensing, and connectivity solutions.
The MAX20057ATIB/VY+T belongs to Analog Devices' automotive power management portfolio, designed specifically for mid-to-high-power vehicle subsystems operating across extreme battery voltage ranges - including cold-crank, load-dump, and stop-start cycles.
FAQ
What is the maximum input voltage rating for MAX20057ATIB/VY+T?
The MAX20057ATIB/VY+T has an absolute maximum input voltage rating of 40V on SUP, SUPSW1, and SUPSW2 pins. Its normal operating input range is 3.5V to 36V, with cold-crank operation supported down to 2.05V via the integrated boost controller. This ensures reliable startup and regulation even during severe automotive battery sag events.
Does MAX20057ATIB/VY+T support external frequency synchronization?
Yes, MAX20057ATIB/VY+T supports external frequency synchronization via the FSYNC pin. It uses an internal PLL to lock to an external clock signal between 250kHz and 2.6MHz. A 50% duty-cycle input yields exact 180° phase shift between Buck1 and Buck2, enabling precise interleaving for optimal input ripple cancellation.
How does the spread-spectrum feature work on MAX20057ATIB/VY+T?
The MAX20057ATIB/VY+T implements factory-enabled spread-spectrum modulation that varies the switching frequency by ±6% around the nominal value (e.g., 2.1MHz) using a triangular waveform with 110μs period. This reduces peak EMI amplitude without affecting regulation performance, and is automatically disabled when FSYNC synchronization is active.
What is the purpose of the EXTVCC pin on MAX20057ATIB/VY+T?
The EXTVCC pin on MAX20057ATIB/VY+T allows bypassing the internal 5V BIAS LDO by applying an external 3.25V–5.5V supply. When valid voltage is present, the IC switches BIAS internally to EXTVCC, reducing power dissipation and improving light-load efficiency - especially useful when connecting a buck output rail directly to EXTVCC.
Can MAX20057ATIB/VY+T operate with only the boost controller enabled?
Yes, MAX20057ATIB/VY+T can operate with only the boost controller enabled by asserting EN3 high while keeping EN1 and EN2 low. In this mode, the boost delivers its fixed 10V output (or adjustable via FB3) with 1ms soft-start, independent buck control, and full protection - ideal for supplying auxiliary rails or precharging buck inputs before system wake-up.
MAX20057ATIB/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)
MAX20057ATIB/VY+T FAQ
1.How can I place an order for MAX20057ATIB/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20057ATIB/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 MAX20057ATIB/VY+T reliable?
The price and inventory of MAX20057ATIB/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 MAX20057ATIB/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20057ATIB/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20057ATIB/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20057ATIB/VY+T?
MAX20057ATIB/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20057ATIB/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 MAX20057ATIB/VY+T?
For technical support, including MAX20057ATIB/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20057ATIB/VY+T requirements.
6.How does Aetrix verify that MAX20057ATIB/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20057ATIB/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 MAX20057ATIB/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20057ATIB/VY+T?
All MAX20057ATIB/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20057ATIB/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 MAX20057ATIB/VY+T part is unused and in its original packaging.
Return procedure for MAX20057ATIB/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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