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Analog Devices Inc./Maxim Integrated MAX20057ATIE/VY+
- Part No.:
- MAX20057ATIE/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20057ATIE/VY+.pdf
- Description:
- IC REG BOOST ADJ 3.5A DL 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,628
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Product details
Overview
MAX20057ATIE/VY+ from Analog Devices is an automotive-grade triple-output power management IC integrating two synchronous buck converters (5V/3.5A and 3.3V/2A) and a 36V asynchronous boost controller, operating over 3.5V–36V input with cold-crank support down to 2V battery voltage. It delivers regulated outputs for instrument clusters, start-stop systems, and navigation head units using 2.1MHz or 400kHz fixed-frequency switching.
For engineers reviewing the MAX20057ATIE/VY+ datasheet, MAX20057ATIE/VY+ pinout, MAX20057ATIE/VY+ application, or MAX20057ATIE/VY+ equivalent, key selection criteria include its -40°C to +125°C automotive qualification, 28-pin TQFN-EP package, spread-spectrum EMI reduction, phase-shifted dual-buck architecture, and FSYNC-programmable operation modes (forced PWM, skip, PLL-sync).
Technical Context
The MAX20057ATIE/VY+ implements 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 current-mode control with 50mV current-sense threshold and supports preboost during cold-crank to maintain buck regulation below 2V battery voltage.
FSYNC enables three functional modes: forced fixed-frequency (FPWM), skip mode (ultra-low 8–10μA quiescent current), and PLL-synchronized operation with external clock. Spread-spectrum modulation (±6% frequency dither) is factory-configured and disabled during external sync, while thermal shutdown activates at 170°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V; supports automotive cold-crank down to 2V via boost pre-regulation |
| Buck1 Output | Fixed 5V / 3.5A or adjustable 1V–14V; regulated feedback voltage = 1.0V ±15mV |
| Buck2 Output | Fixed 3.3V / 2A or adjustable 1V–14V; regulated feedback voltage = 1.0V ±15mV |
| Boost Output | Fixed 10V or adjustable; 36V max input; 50mV current-limit threshold for low-loss sensing |
| Switching Frequency | Factory-set 2.1MHz or 400kHz; FSYNC enables PLL sync or skip/FPWM mode selection |
| Quiescent Current | 10μA (5V buck on), 8μA (3.3V buck on), 30μA (all regulators active) |
| Operating Temperature | -40°C to +125°C ambient; qualified per AEC-Q100 Grade 1 |
| Package | 28-pin TQFN-EP (5mm × 5mm); θJA = 27°C/W, θJC = 3°C/W |
Pinout & Package
28-pin thermally enhanced TQFN-EP (5mm × 5mm) with exposed pad connected to AGND for optimal thermal performance. Package code T2855Y+5C, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Independent enable inputs | High-voltage tolerant (to 40V); control startup sequencing of Buck1, Buck2, and Boost independently |
| FB1, FB2, FB3 | Feedback inputs | 1.0V reference; support fixed output (connect to BIAS) or adjustable output (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 power-good indicators | Assert low when output drops below 93.5% of nominal; high-impedance above 95%; used for rail sequencing |
| FSYNC | External clock sync input | Enables PLL synchronization, skip mode (low), or FPWM (high); determines phase shift between buck channels |
| COMP, CSP, DL | Boost control terminals | COMP: error amplifier output for RC compensation; CSP: current-sense input; DL: N-MOSFET gate driver (1.67A peak) |
| BIAS, EXTVCC | Internal LDO and switchover supply | BIAS = 5V internal regulator; EXTVCC bypasses BIAS when 3.25V–5.5V external supply applied |
| AGND, PGND1–PGND3 | Analog and power ground returns | Separate AGND (quiet reference) and dedicated PGNDs per converter minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| 180° out-of-phase dual-buck operation | Reduces input capacitance requirements by minimizing RMS input current ripple across full load and input range |
| 20ns minimum on-time (buck) | Enables stable 3.3V output at 2.1MHz without pulse-skipping, critical for AM-band interference avoidance |
| Spread-spectrum modulation (±6%) | Reduces peak EMI emissions without requiring additional filtering components or layout changes |
| Cycle-by-cycle overcurrent protection | Prevents damage during short-circuit or overload; includes hiccup-mode recovery with 10ms off-time |
| Thermal shutdown with 20°C hysteresis | Protects against sustained overloads; allows safe auto-recovery after junction cools to 150°C |
| EXTVCC switchover capability | Improves light-load efficiency and reduces die temperature by bypassing internal 5V LDO with external rail |
Applications
| Automotive Start-Stop System | Instrument Cluster |
|---|---|
Use Scenario: Maintains stable 5V and 3.3V rails during engine cranking when battery voltage dips to 2V. IC Role / Device Role / Timing Role: Triple-output PMIC providing preboost-supported buck regulation and rail sequencing. Use Value: Eliminates need for discrete boost stage; ensures HUD, gauges, and microcontrollers remain powered through cold-crank events. | Use Scenario: Powers LCD display, microcontroller, and CAN transceiver in digital dashboard with strict EMI limits. IC Role / Device Role / Timing Role: High-frequency (2.1MHz) power source with spread-spectrum and phase-shifted buck operation. Use Value: Meets automotive AM-band immunity requirements while minimizing board area via small external inductors/caps. |
| Navigation Head Unit | Distributed DC Power System |
Use Scenario: Supplies 5V for main SoC, 3.3V for memory/peripherals, and 10V for RF front-end in infotainment module. IC Role / Device Role / Timing Role: Integrated triple-rail power solution with independent enable/control per output. Use Value: Reduces BOM count vs. discrete regulators; simplifies thermal design with single-package power delivery. | Use Scenario: Centralized power hub for ADAS camera modules, radar sensors, and domain controllers in zonal architecture. IC Role / Device Role / Timing Role: High-input-range PMIC supporting wide VIN transients and precise rail monitoring via PGOOD signals. Use Value: Enables synchronized power-up/down across distributed nodes using ENx and PGOODx handshaking. |
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; 400kHz only | Lacks cold-crank support; requires external boost for sub-3.5V operation | Select when boost functionality is unnecessary and cost-sensitive designs prioritize footprint over cold-crank robustness |
| TPS65381A-Q1 | Triple buck (3A/2A/1.5A) + linear LDOs; no boost; 2.2MHz switching; different pinout and control interface | No preboost capability; relies on system-level input conditioning for cold-crank | Choose for simpler power trees where all rails are buck-derived and external boost is already present |
Compared with MAX20057ATIE/VY+, MAX20090ATI/VY+ reduces integration by omitting the boost controller-simplifying layout but eliminating crank-ready operation-while TPS65381A-Q1 trades boost capability for higher channel count and tighter integration of LDOs, requiring redesign of enable sequencing and thermal management.
Availability
MAX20057ATIE/VY+ is available at Aetrix Electronics and suitable for automotive start-stop systems, instrument clusters, and navigation head units requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX20057ATIE/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 MAX20057ATIE/VY+ belongs to Analog Devices' automotive power management portfolio, designed specifically for crank-ready, EMI-conscious mid-to-high-power ECUs operating across wide input voltage ranges in harsh environments.
FAQ
What is the cold-crank capability of the MAX20057ATIE/VY+?
The MAX20057ATIE/VY+ maintains regulated 5V and 3.3V outputs during automotive cold-crank events down to 2V battery voltage by enabling its integrated 36V boost controller. This preboost function sustains buck converter input voltage above dropout thresholds, ensuring continuous operation of downstream electronics without brownouts or resets. The boost UVLO falling threshold can be disabled to extend functionality below 2V.
How does the FSYNC pin configure operating modes on the MAX20057ATIE/VY+?
The FSYNC pin on the MAX20057ATIE/VY+ selects among three core operating modes: logic-low enables skip mode (ultra-low IQ), logic-high enables forced PWM (constant frequency), and an external clock signal enables PLL-synchronized operation. The duty cycle of the external clock also controls phase alignment between Buck1 and Buck2-50% duty yields 180° phase shift. Mode selection directly impacts EMI profile, efficiency, and transient response.
Can the MAX20057ATIE/VY+ operate without the internal BIAS LDO?
Yes-the MAX20057ATIE/VY+ supports EXTVCC switchover: applying 3.25V–5.5V to the EXTVCC pin disables the internal 5V BIAS LDO and powers internal circuitry from the external supply. This reduces die temperature and improves light-load efficiency, especially when EXTVCC is tied to one of the buck outputs. If VEXTVCC drops below ~3V, the IC automatically re-enables the BIAS LDO.
What protection features are integrated into the MAX20057ATIE/VY+?
The MAX20057ATIE/VY+ integrates cycle-by-cycle current limiting on all three channels, thermal shutdown at 170°C with 20°C hysteresis, undervoltage lockout on BIAS (3.1V rising / 2.6V falling) and boost SUP (4.5V rising), plus open-drain PGOOD indicators with 20μs debounce. Overcurrent triggers hiccup-mode recovery (10ms off-time), and each buck has independent enable and soft-start to prevent inrush currents.
Is the MAX20057ATIE/VY+ pin-compatible with other MAX20057 variants?
Yes-MAX20057ATIE/VY+ shares identical pinout, package (28-pin TQFN-EP), and electrical interface with all MAX20057 family members including MAX20057ATI/VY+, differing only in factory-programmed options such as switching frequency (2.1MHz vs. 400kHz) and spread-spectrum enablement. No PCB redesign is required when substituting within the same package variant, though register configuration or external component values may require validation.
MAX20057ATIE/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)
MAX20057ATIE/VY+ FAQ
1.How can I place an order for MAX20057ATIE/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20057ATIE/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 MAX20057ATIE/VY+ reliable?
The price and inventory of MAX20057ATIE/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20057ATIE/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20057ATIE/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20057ATIE/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20057ATIE/VY+?
MAX20057ATIE/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20057ATIE/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 MAX20057ATIE/VY+?
For technical support, including MAX20057ATIE/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20057ATIE/VY+ requirements.
6.How does Aetrix verify that MAX20057ATIE/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20057ATIE/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 MAX20057ATIE/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20057ATIE/VY+?
All MAX20057ATIE/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20057ATIE/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 MAX20057ATIE/VY+ part is unused and in its original packaging.
Return procedure for MAX20057ATIE/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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