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Analog Devices Inc./Maxim Integrated MAX20057ATIF/VY+T
- Part No.:
- MAX20057ATIF/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20057ATIF/VY+T.pdf
- Description:
- IC REG BOOST ADJ 3.5A DL 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,256
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Product details
Overview
MAX20057ATIF/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–36V input with cold-crank support down to 2V battery voltage, fixed 5V/3.3V outputs, and 2.1MHz/400kHz selectable switching frequency - used in instrument clusters and start-stop systems.
For engineers reviewing the MAX20057ATIF/VY+T datasheet, MAX20057ATIF/VY+T pinout, MAX20057ATIF/VY+T application, or MAX20057ATIF/VY+T equivalent, key selection considerations include its dual-phase buck architecture, FSYNC-synchronized operation, spread-spectrum EMI reduction, thermal shutdown at 170°C, and thermally enhanced 5mm × 5mm TQFN-EP package with exposed pad.
Technical Context
The MAX20057ATIF/VY+T implements valley-current-mode control for both buck converters, operating 180° out-of-phase to minimize input ripple across 3.5V–36V input range; it supports forced PWM, skip mode, and external clock synchronization via FSYNC pin with PLL-based alignment of LX1/LX2 falling edges.
Its boost controller features current-mode control with 50mV current-sense threshold, programmable UVLO (4.5V rising), and operation down to 2.05V input; integrated 5V BIAS LDO supports gate drive, while EXTVCC switchover enables efficiency optimization by bypassing internal regulation using external 3.25V–5.5V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V continuous; supports cold-crank operation down to 2.05V input via boost pre-regulation |
| Buck1 Output Current | Up to 3.5A continuous; enables mid-power rails like 5V MCU core supplies in automotive ECUs |
| Buck2 Output Current | Up to 2A continuous; suitable for 3.3V domain powering CAN transceivers or display logic |
| Switching Frequency | Fixed 2.1MHz or 400kHz; 2.1MHz allows compact 1µH inductors and avoids AM band interference |
| Minimum On-Time | 20ns (buck), 60ns (boost); ensures stable 3.3V output regulation even at 2.1MHz with wide VIN/VOUT ratios |
| Thermal Shutdown | 170°C with 20°C hysteresis; protects against sustained overload in enclosed automotive enclosures |
| Quiescent Current | 30µA with all regulators active; meets OEM requirements for low-power standby in stop-start systems |
Pinout & Package
MAX20057ATIF/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 high-power automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Independent enable inputs | Allow precise sequencing of buck1 (5V), buck2 (3.3V), and boost (10V) rails during system startup/shutdown |
| FB1, FB2, FB3 | Feedback voltage sense inputs | Regulated to 1.0V ±15mV; support fixed outputs (via BIAS tie) or adjustable 1V–14V (via resistor divider) |
| LX1, LX2 | High-side switch node connections | Drive external inductors; require low-ESR ceramic bootstrap capacitors (BST1/BST2) for gate drive charge replenishment |
| PGOOD1, PGOOD2 | Open-drain power-good indicators | Assert low when output drops below 93.5% of nominal; used for downstream supply enable or fault signaling |
| FSYNC | External clock synchronization input | Accepts 250kHz–2.6MHz signal; locks buck phase relationship (180° shift) and disables internal spread spectrum |
| EXTVCC | External bias supply input | Accepts 3.25V–5.5V to disable internal 5V LDO, reducing die temperature and improving light-load efficiency |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase buck architecture | 180° interleaved operation reduces input capacitor RMS current by ~30%, enabling smaller bulk capacitance |
| Cold-crank boost support | Boost controller sustains buck regulation during 2V battery dips, eliminating brownouts in engine cranking |
| Skip mode + FPWM selection | FSYNC pin selects ultra-low-IQ skip mode (<10µA per enabled buck) or constant-frequency FPWM for AM-band immunity |
| Spread-spectrum modulation | ±6% frequency dithering centered at fSW reduces peak EMI by >10dB without altering layout or filtering |
| Integrated thermal protection | Junction shutdown at 170°C with 20°C hysteresis prevents latch-up during transient overloads in sealed modules |
| High-voltage tolerant enables | EN1/EN2/EN3 withstand 40V, allowing direct connection to 12V/24V battery without level-shifting circuitry |
Applications
| Instrument Cluster Power Supply | Start-Stop System Control Unit |
|---|---|
Use Scenario: Powers TFT LCD, microcontroller, and CAN interface in digital dashboards under wide battery transients. IC Role / Device Role / Timing Role: Triple-output PMIC delivering regulated 5V (MCU core), 3.3V (peripherals), and 10V (LCD bias) with synchronized switching. Use Value: 2.1MHz operation minimizes EMI near sensitive display timing circuits; cold-crank boost maintains display functionality during cranking. |
Use Scenario: Supplies power to engine control logic, sensors, and communication interfaces during repeated engine stop/start cycles. IC Role / Device Role / Timing Role: Primary power source managing rail sequencing, voltage monitoring, and fail-safe shutdown via PGOOD signals. Use Value: 30µA quiescent current extends battery life in prolonged stop mode; UVLO hysteresis prevents oscillation during slow battery recovery. |
| Navigation Head Unit | Distributed DC Power Node |
Use Scenario: Provides clean, low-noise 5V/3.3V rails for GPS, audio codec, and touch controller in infotainment systems. IC Role / Device Role / Timing Role: High-efficiency buck regulator pair with spread-spectrum EMI suppression to avoid RF interference with GNSS receivers. Use Value: 20ns minimum on-time ensures stable 3.3V output at 2.1MHz even with 12V input, reducing board area vs. lower-frequency alternatives. |
Use Scenario: Centralized power hub supplying multiple sub-modules (e.g., camera, radar, ADAS sensors) from a single 12V bus. IC Role / Device Role / Timing Role: Scalable PMIC supporting independent enable/disable of each output for dynamic power partitioning. Use Value: Dual-phase buck topology lowers input ripple, reducing shared bulk capacitor stress across distributed loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20090ATI/VY+ | Single 3.5A buck + boost; no second buck channel; 2.2MHz fixed frequency only | Lacks dual-buck capability and phase-shifted operation; suited for simpler 5V-only systems | Select when only one high-current rail is needed and board space is constrained |
| TPS653221A-Q1 | Triple buck (3A/2A/1.5A); no integrated boost; 2.2MHz max; requires external pre-boost for cold-crank | Requires external boost circuit for <2.5V operation; higher total BOM count for crank-ready designs | Select when boost is implemented separately and higher buck channel count is required |
Compared with MAX20057ATIF/VY+T, MAX20090ATI/VY+ offers smaller footprint but sacrifices rail flexibility, while TPS653221A-Q1 provides more buck channels yet adds design complexity for cold-crank support - making MAX20057ATIF/VY+T optimal for integrated crank-ready triple-rail systems.
Availability
MAX20057ATIF/VY+T is available at Aetrix Electronics and suitable for automotive start-stop systems, instrument clusters, navigation head units, and distributed DC power nodes requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX20057ATIF/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 MAX20057 belongs to Analog Devices' automotive PMIC portfolio designed specifically for crank-ready, EMI-conscious power delivery in safety-critical vehicle subsystems operating from -40°C to +125°C.
FAQ
What is the cold-crank input voltage limit supported by the MAX20057ATIF/VY+T?
The MAX20057ATIF/VY+T supports cold-crank operation down to 2.05V input voltage via its integrated boost controller, which maintains regulation of the buck converters during severe battery sags typical of automotive cranking events. This capability is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables, where UVLO falling threshold is specified at 2.05V for the boost controller input (SUP).
Does the MAX20057ATIF/VY+T support external frequency synchronization?
Yes, the MAX20057ATIF/VY+T supports external frequency synchronization via the FSYNC pin, which accepts clock signals from 250kHz to 2.6MHz. The internal PLL aligns Buck1's LX1 falling edge to the FSYNC rising edge and Buck2's LX2 falling edge to the FSYNC falling edge - enabling precise 180° phase shift and EMI reduction through deterministic switching.
What is the purpose of the EXTVCC pin on the MAX20057ATIF/VY+T?
The EXTVCC pin on the MAX20057ATIF/VY+T allows bypassing the internal 5V BIAS LDO by applying an external 3.25V–5.5V supply, reducing internal power dissipation and improving light-load efficiency. When VEXTVCC drops below ~3V, the device automatically switches back to the internal LDO, ensuring seamless operation during supply transients.
How does the MAX20057ATIF/VY+T implement thermal protection?
The MAX20057ATIF/VY+T incorporates junction-level thermal shutdown at 170°C with 20°C hysteresis. When the die temperature exceeds this threshold, all switching activity halts until the junction cools to 150°C, at which point normal operation resumes. This behavior is verified in the Thermal Overload section of the datasheet and applies independently of input voltage or load conditions.
Can the MAX20057ATIF/VY+T generate adjustable output voltages?
Yes, the MAX20057ATIF/VY+T supports adjustable outputs for all three channels: Buck1 and Buck2 can be set from 1V to 14V using external resistor dividers on FB1/FB2 (regulated to 1.0V ±15mV), and the boost output can be adjusted via FB3 divider. Fixed outputs (5V/3.3V/10V) are achieved by tying FBx to BIAS, as documented in the Pin Description and Detailed Description sections.
MAX20057ATIF/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)
MAX20057ATIF/VY+T FAQ
1.How can I place an order for MAX20057ATIF/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20057ATIF/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 MAX20057ATIF/VY+T reliable?
The price and inventory of MAX20057ATIF/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 MAX20057ATIF/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20057ATIF/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20057ATIF/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20057ATIF/VY+T?
MAX20057ATIF/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20057ATIF/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 MAX20057ATIF/VY+T?
For technical support, including MAX20057ATIF/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20057ATIF/VY+T requirements.
6.How does Aetrix verify that MAX20057ATIF/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20057ATIF/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 MAX20057ATIF/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20057ATIF/VY+T?
All MAX20057ATIF/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20057ATIF/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 MAX20057ATIF/VY+T part is unused and in its original packaging.
Return procedure for MAX20057ATIF/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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