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Analog Devices Inc./Maxim Integrated MAX20057ATIF/VY+
- Part No.:
- MAX20057ATIF/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20057ATIF/VY+.pdf
- Description:
- IC REG BOOST ADJ 3.5A DL 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,529
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Product details
Overview
MAX20057ATIF/VY+ from Analog Devices is an automotive-grade triple-output power management IC integrating two synchronous buck converters (5V/3.3A and 3.3V/2A) and a 36V asynchronous boost controller, operating from 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 MAX20057ATIF/VY+ datasheet, MAX20057ATIF/VY+ pinout, MAX20057ATIF/VY+ application, or MAX20057ATIF/VY+ equivalent, key selection criteria include its -40°C to +125°C automotive qualification, spread-spectrum EMI reduction, FSYNC programmable operation modes (forced PWM, skip, PLL sync), and thermally enhanced 5mm × 5mm TQFN-EP package with exposed pad.
Technical Context
The MAX20057ATIF/VY+ employs valley current-mode control for both buck converters, enabling stable regulation across wide input ranges including automotive cold-crank (2V–36V). Its 180° phase shift between Buck1 and Buck2 minimizes input ripple, while the boost controller supports preboost during low-VIN conditions to maintain buck regulation.
FSYNC enables three operational modes: forced fixed-frequency (FPWM), skip mode (ultra-low 8–10μA quiescent current), and PLL-synchronized external clock locking. Spread spectrum (±6% frequency modulation) is factory-enabled to suppress EMI without compromising AM-band immunity or thermal performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V; supports cold-crank operation down to 2V via boost pre-regulation |
| Buck1 Output | Fixed 5V / 3.5A or adjustable 1V–14V; ±1% feedback reference (1.0V) |
| Buck2 Output | Fixed 3.3V / 2A or adjustable 1V–14V; ±1% feedback reference (1.0V) |
| Boost Output | Fixed 10V or adjustable; 36V max output capability; 50mV current-limit threshold |
| Switching Frequency | Factory-set 400kHz or 2.1MHz; ±6% spread spectrum enabled; FSYNC programmable |
| Quiescent Current | 10μA (5V buck on), 8μA (3.3V buck on), 30μA (all regulators active) |
| Thermal Range | -40°C to +125°C ambient; thermal shutdown at 170°C with 20°C hysteresis |
| Package | 28-pin TQFN-EP (5mm × 5mm); θJA = 27°C/W, θJC = 3°C/W |
Pinout & Package
MAX20057ATIF/VY+ uses a thermally enhanced 28-pin TQFN-EP package (5mm × 5mm) with exposed pad connected to AGND for optimal heat dissipation. The package supports high-power automotive operation with low thermal resistance (θJC = 3°C/W).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Independent enable inputs | High-voltage tolerant digital enables for Buck1, Buck2, and Boost; allow precise power sequencing |
| FB1, FB2, FB3 | Feedback inputs | 1.0V nominal reference; support fixed outputs (via BIAS tie) or adjustable 1V–14V (via resistor divider) |
| LX1, LX2 | Switch node outputs | Drive external inductors; require ceramic bootstrap capacitors (BST1/BST2) for high-side gate drive |
| PGOOD1, PGOOD2 | Open-drain status indicators | Assert low when output drops below 93.5% of regulation; high-impedance above 95%; used for rail sequencing |
| FSYNC | External clock synchronization input | Enables PLL lock to external clock; determines phase shift (50% duty cycle → 180° Buck1/Buck2 phase offset) |
| COMP, CSP, DL | Boost control interface | COMP: error amplifier output for RC compensation; CSP: current sense input (50mV threshold); DL: N-MOSFET gate driver (1.67A peak) |
| BIAS, EXTVCC | Internal LDO and switchover | BIAS = 5V internal supply; EXTVCC bypasses BIAS LDO when 3.25V–5.5V external rail applied |
Key Features
| Feature | Design Value |
|---|---|
| 180° out-of-phase buck operation | Reduces input capacitor RMS current by ~30%, minimizing bulk capacitance and board area |
| 20ns minimum on-time (buck) | Enables stable 3.3V output at 2.1MHz without skip-mode artifacts or AM band interference |
| Spread-spectrum modulation (±6%) | Reduces peak EMI by >10dB across 150kHz–108MHz without altering layout or filtering |
| Cycle-by-cycle overcurrent protection | Prevents MOSFET failure during short-circuit; hiccup mode limits average power during fault |
| Thermally enhanced TQFN-EP | Exposed pad lowers junction-to-case thermal resistance to 3°C/W, enabling 3.5A/2A continuous operation at +125°C |
| Ultra-low quiescent current modes | 8–10μA IQ in skip mode meets OEM requirements for always-on automotive modules |
Applications
| Instrument Cluster Power Supply | Start-Stop System DC-DC Stage |
|---|---|
Use Scenario: Supplies 5V and 3.3V rails to microcontroller, display driver, and CAN transceiver in digital instrument clusters. IC Role / Device Role / Timing Role: Triple-output PMIC providing sequenced, regulated power with PGOOD monitoring for safe boot and fault reporting. Use Value: Maintains regulation during 2V cold-crank events; 180° phase shift reduces input ripple, allowing smaller bulk capacitors. | Use Scenario: Powers engine control unit (ECU) and sensors during engine stop-start cycles where battery voltage dips to 2V–6V. IC Role / Device Role / Timing Role: Boost controller pre-regulates input to sustain buck converter operation during transient dropout. Use Value: Enables crank-ready design without external preboost circuitry; 36V boost capability handles load-dump transients. |
| Navigation Head Unit Power | Distributed Automotive DC System |
Use Scenario: Delivers clean, low-noise 5V/3.3V to RF-sensitive navigation processors and GPS receivers. IC Role / Device Role / Timing Role: High-frequency (2.1MHz) buck converters minimize output ripple and avoid AM radio band (530–1710kHz). Use Value: Spread-spectrum and 20ns min-on-time eliminate audible noise and EMI coupling into analog front-ends. | Use Scenario: Centralized power hub supplying multiple ECUs in zonal architecture with independent enable control. IC Role / Device Role / Timing Role: Three independently enabled regulators support flexible power domain partitioning and wake-up sequencing. Use Value: EN1/EN2/EN3 pins allow software-controlled rail activation; thermal shutdown protects against localized overheating in dense layouts. |
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 |
|---|---|---|---|
| MAX20090ATI/VY+ | Single 5V/3.5A buck + dual 3.3V/2A bucks; no integrated boost controller; 2.1MHz only | Requires external boost for cold-crank; suited for non-crank applications with lower system complexity | Select when boost functionality is implemented externally or unnecessary; lower BOM count but reduced cold-crank robustness |
| TPS65381A-Q1 | Three buck regulators (5V/3A, 3.3V/2.5A, 1.2V/2A); no boost; includes watchdog and reset logic | Targeted at ASIL-B safety-critical domains; lacks cold-crank support and spread-spectrum EMI reduction | Select when functional safety (ISO 26262) features are required over cold-crank resilience and EMI performance |
Compared with MAX20057ATIF/VY+, MAX20090ATI/VY+ reduces integration by omitting the boost controller-simplifying design but requiring external preboost for sub-6V operation-while TPS65381A-Q1 adds safety logic at the cost of cold-crank capability and EMI mitigation features critical for infotainment systems.
Availability
MAX20057ATIF/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 MAX20057ATIF/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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20057ATIF/VY+ belongs to Analog Devices' automotive power management portfolio, designed specifically for crank-ready, EMI-conscious mid-to-high-power infotainment and body electronics applications operating across -40°C to +125°C.
FAQ
What is the cold-crank capability of the MAX20057ATIF/VY+?
The MAX20057ATIF/VY+ maintains regulated output during automotive cold-crank events down to 2V battery voltage by leveraging its integrated 36V asynchronous boost controller to pre-regulate input to the buck converters. This eliminates need for external preboost circuitry and ensures uninterrupted operation of instrument clusters and head units during engine cranking.
How does the FSYNC pin affect MAX20057ATIF/VY+ operation?
The FSYNC pin on the MAX20057ATIF/VY+ enables three distinct modes: driving FSYNC low activates skip mode for ultra-low quiescent current (8–10μA), driving it high enables forced PWM for constant frequency, and applying an external clock enables PLL synchronization. A 50% duty-cycle external clock yields 180° phase shift between Buck1 and Buck2, minimizing input ripple.
Can MAX20057ATIF/VY+ operate without the internal BIAS LDO?
Yes - the MAX20057ATIF/VY+ supports EXTVCC switchover: applying 3.25V–5.5V to the EXTVCC pin disables the internal 5V BIAS LDO and powers internal circuitry directly from the external rail. This reduces IC power dissipation and improves light-load efficiency, especially when powered from one of the buck outputs.
What protection features are integrated into MAX20057ATIF/VY+?
The MAX20057ATIF/VY+ integrates cycle-by-cycle current limiting on all three channels, thermal shutdown at 170°C (20°C hysteresis), undervoltage lockout on BIAS (3.1V rising, 2.6V falling) and boost input (4.5V rising), plus open-drain PGOOD indicators with 20μs debounce. These ensure robust operation in harsh automotive environments without external supervision circuitry.
Is spread spectrum enabled by default on MAX20057ATIF/VY+?
Yes - spread spectrum (±6% frequency modulation) is a factory-configured option on the MAX20057ATIF/VY+ and is active when operating from the internal oscillator. It is automatically disabled during FSYNC synchronization, though external clock modulation (e.g., spread-spectrum source) passes through unfiltered to maintain EMI benefits.
MAX20057ATIF/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)
MAX20057ATIF/VY+ FAQ
1.How can I place an order for MAX20057ATIF/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20057ATIF/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 MAX20057ATIF/VY+ reliable?
The price and inventory of MAX20057ATIF/VY+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20057ATIF/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20057ATIF/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20057ATIF/VY+?
MAX20057ATIF/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20057ATIF/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 MAX20057ATIF/VY+?
For technical support, including MAX20057ATIF/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20057ATIF/VY+ requirements.
6.How does Aetrix verify that MAX20057ATIF/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20057ATIF/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 MAX20057ATIF/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20057ATIF/VY+?
All MAX20057ATIF/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20057ATIF/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 MAX20057ATIF/VY+ part is unused and in its original packaging.
Return procedure for MAX20057ATIF/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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