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Analog Devices Inc./Maxim Integrated MAX20057ATIA/VY+
- Part No.:
- MAX20057ATIA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20057ATIA/VY+.pdf
- Description:
- IC REG BOOST ADJ 3.5A DL 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:154
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Product details
Overview
MAX20057ATIA/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 180° out-of-phase buck switching at 400kHz or 2.1MHz, and features spread-spectrum EMI reduction, PGOOD indicators, and thermal shutdown - designed for instrument clusters and start-stop systems.
For engineers reviewing the MAX20057ATIA/VY+ datasheet, MAX20057ATIA/VY+ pinout, MAX20057ATIA/VY+ application, or MAX20057ATIA/VY+ equivalent, key selection criteria include cold-crank regulation capability (2V min input), dual-buck phase interleaving, FSYNC programmable mode (FPWM/skip/sync), 5mm × 5mm TQFN-EP package thermal performance, and OEM-compliant quiescent current (10μA/8μA/30μA states).
Technical Context
The MAX20057ATIA/VY+ implements valley-current-mode control for both buck converters, enabling stable operation across wide VIN (3.5V–36V) and VOUT (1V–14V) ranges while supporting 95% max duty cycle in dropout. Its boost controller uses asynchronous current-mode topology with 50mV current-sense threshold and UVLO falling threshold disableable to sustain regulation below 2V battery voltage.
FSYNC input enables three operating modes: forced PWM (constant frequency), skip mode (ultra-low IQ), or PLL-synchronized operation with external clock; spread spectrum (±6% modulation) is factory-configured and disabled during external sync. Phase shift between Buck1 and Buck2 is fixed at 180° in internal oscillator mode and programmable via FSYNC duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V continuous; supports cold-crank operation down to 2.05V with boost enabled - ensures uninterrupted supply during automotive engine cranking. |
| Buck1 Output | Fixed 5V or adjustable 1V–14V, 3.5A max; regulated feedback voltage = 1.00V ±15mV - enables precise rail generation for microcontrollers and sensors. |
| Buck2 Output | Fixed 3.3V or adjustable 1V–14V, 2A max; feedback leakage <1μA - maintains accuracy under light-load conditions typical in infotainment standby. |
| Switching Frequency | Factory-set 400kHz or 2.1MHz; 20ns min on-time at 2.1MHz - allows compact 2.2μH inductors and avoids AM band interference. |
| Quiescent Current | 10μA (5V buck only), 8μA (3.3V buck only), 30μA (all regulators active) - meets OEM low-power requirements for always-on vehicle modules. |
| Thermal Protection | Thermal shutdown at 170°C ±5°C with 20°C hysteresis - prevents latch-up during sustained high-temperature operation in engine bay environments. |
| Package | 28-pin TQFN-EP, 5mm × 5mm, exposed pad - achieves θJA = 27°C/W on 4-layer board, enabling >2.2W continuous dissipation without heatsink. |
Pinout & Package
MAX20057ATIA/VY+ is housed in a thermally enhanced 5mm × 5mm, 28-pin TQFN-EP package (package code T2855Y+5C) with exposed pad connected to AGND for optimal heat dissipation. Pin functions are validated per Analog Devices' official pin description table (Rev 8, July 2025).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Independent enable inputs for Buck1, Buck2, Boost | High-voltage tolerant (to 40V); allow precise power sequencing and fault isolation per rail. |
| FB1, FB2, FB3 | Feedback inputs for each regulator | Regulated to 1.00V ±15mV; support fixed outputs (via BIAS tie) or resistor-divider adjustment (1V–14V). |
| LX1, LX2 | Switch node connections for buck converters | Drive external inductors; require low-ESR 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; used for downstream supply enable or system fault signaling. |
| FSYNC | External clock synchronization input | Accepts 250kHz–2.6MHz signal; controls mode (skip/FPWM/sync) and sets 180° phase shift between bucks via duty cycle. |
| DL | N-channel MOSFET gate driver output | Sources/sinks 1.67A peak; drives external boost switch with logic-level compatibility when powered by BIAS LDO. |
Key Features
| Feature | Design Value |
|---|---|
| Cold-crank regulation | Maintains buck output regulation with input as low as 2.05V using integrated boost pre-regulator - eliminates need for external backup supplies in start-stop systems. |
| Interleaved buck operation | Buck1 and Buck2 operate 180° out-of-phase at same frequency - reduces input ripple current by ~70%, easing input capacitor sizing and EMI filtering. |
| Spread-spectrum EMI reduction | ±6% triangular frequency modulation centered at 2.1MHz or 400kHz - lowers peak radiated emissions without compromising regulation or efficiency. |
| EXTVCC switchover | Allows bypassing internal 5V BIAS LDO by applying 3.25–5.5V to EXTVCC - cuts internal power loss and improves light-load efficiency when using buck outputs as bias source. |
| Hiccup-mode overcurrent protection | Detects sustained overcurrent, disables affected channel for ~10ms, then auto-restarts - prevents thermal runaway during short-circuit faults on any rail. |
Applications
| Instrument Cluster Power | Start-Stop System Control Unit |
|---|---|
|
Use Scenario: Centralized power delivery for LCD display, microcontroller, CAN transceiver, and backlight drivers in digital dashboards. IC Role / Device Role / Timing Role: Triple-output PMIC providing isolated, sequenced 5V, 3.3V, and 10V rails with PGOOD coordination and cold-crank hold-up. Use Value: Eliminates discrete DC/DC stages; 10μA/8μA quiescent current extends battery life during vehicle sleep mode. |
Use Scenario: Power management for engine control module (ECM) during repeated stop-start cycles with battery voltage sag to 2.5V. IC Role / Device Role / Timing Role: Boost-enabled buck regulator maintaining 5V/3.3V outputs during cranking transients; UVLO disable allows sub-2V operation. Use Value: Ensures uninterrupted ECM operation without brownouts; 2.1MHz switching minimizes bulk capacitance for space-constrained under-hood placement. |
| Navigation Head Unit | Distributed Automotive ECUs |
|
Use Scenario: Powering GPS baseband processor, RF front-end, touchscreen controller, and audio codec in infotainment systems. IC Role / Device Role / Timing Role: Dual-buck + boost architecture delivering clean, low-noise 1.2V core, 3.3V I/O, and 10V backlight rails with independent enable control. Use Value: Spread-spectrum and 180° interleaving suppress AM-band noise critical for FM radio coexistence; FSYNC sync avoids beat frequencies. |
Use Scenario: Modular power solution for zone controllers managing door modules, seat controls, and HVAC actuators. IC Role / Device Role / Timing Role: Highly integrated PMIC replacing multiple discrete regulators; supports flexible output configuration via FB resistors and EN pin sequencing. Use Value: Reduces BOM count by ≥6 components per ECU; TQFN-EP package enables automated optical inspection and high-yield reflow soldering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20090ATPA/VY+ | Single 3.5A buck + boost; no second buck channel; 2.2MHz fixed frequency; smaller 20-pin TQFN | Lacks dual-buck interleaving and independent 3.3V rail - suitable only for simpler single-rail systems | Select when board space is critical and only one regulated output is required beyond boost. |
| TPS65321A-Q1 | Triple buck (3A/2A/1.5A) + LDO; no boost; 2.2MHz; 32-pin HTSSOP; includes watchdog and reset logic | No cold-crank support; requires external boost for sub-4V operation; adds system monitoring features | Choose when functional safety (ASIL-B) monitoring is mandatory and cold-crank is handled externally. |
Compared with MAX20057ATIA/VY+, MAX20090ATPA/VY+ reduces integration but saves area and cost for single-rail designs, while TPS65321A-Q1 trades boost capability for built-in safety logic - neither offers the same combination of cold-crank-ready triple-output integration in a 5mm × 5mm footprint.
Availability
MAX20057ATIA/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 MAX20057ATIA/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 consumer markets since 1965.
The MAX20057ATIA/VY+ belongs to Analog Devices' automotive power management portfolio, engineered specifically for ASIL-Ready power delivery in harsh environments - emphasizing cold-crank resilience, low quiescent current, and EMI robustness for modern vehicle architectures.
FAQ
What is the minimum input voltage supported by MAX20057ATIA/VY+ during cold-crank conditions?
The MAX20057ATIA/VY+ supports cold-crank operation down to 2.05V input when the boost controller is enabled, maintaining regulated 5V and 3.3V outputs. This is achieved through the integrated 36V asynchronous boost stage, which pre-regulates the input to sustain buck converter operation below standard automotive UVLO thresholds. The boost UVLO falling threshold can be disabled to extend functionality below 2V in specific configurations.
Does MAX20057ATIA/VY+ support independent enable control for each output rail?
Yes, MAX20057ATIA/VY+ provides three dedicated enable pins: EN1 for Buck1, EN2 for Buck2, and EN3 for the boost controller. Each is high-voltage tolerant (up to 40V), allowing direct connection to battery or microcontroller GPIOs for precise power sequencing, fault isolation, and dynamic rail activation - essential for meeting automotive ASAM and OEM startup timing requirements.
How does the FSYNC pin affect switching behavior in MAX20057ATIA/VY+?
The FSYNC pin on MAX20057ATIA/VY+ determines operating mode and synchronization: driving FSYNC low enables skip mode (ultra-low IQ), high enables forced PWM (constant frequency), and applying an external clock enables PLL-synchronized operation. With external sync, Buck1 aligns its LX1 falling edge to FSYNC rising edge, Buck2 to FSYNC falling edge, and boost DL to FSYNC falling edge - enabling deterministic phase relationships across domains.
What thermal performance can be expected from the MAX20057ATIA/VY+ in a standard 4-layer PCB layout?
In a standard 4-layer PCB layout with full thermal relief to the exposed pad, MAX20057ATIA/VY+ achieves a junction-to-ambient thermal resistance (θJA) of 27°C/W. This allows continuous power dissipation up to 2.286W at +70°C ambient, supporting full-load operation of all three regulators without forced airflow - verified using Analog Devices' evaluation kit layout and land pattern #90-0027.
Can MAX20057ATIA/VY+ generate adjustable output voltages, and what is the supported range?
Yes, MAX20057ATIA/VY+ supports adjustable outputs for both buck converters (Buck1 and Buck2) from 1V to 14V via external resistor dividers on FB1/FB2 pins, with feedback regulated to 1.00V ±15mV. The boost output is fixed at 10V (±2.5%) or adjustable using FB3 divider; all regulators retain full protection and sequencing functionality across the entire range.
MAX20057ATIA/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tray
- 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)
MAX20057ATIA/VY+ FAQ
1.How can I place an order for MAX20057ATIA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20057ATIA/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 MAX20057ATIA/VY+ reliable?
The price and inventory of MAX20057ATIA/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20057ATIA/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20057ATIA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20057ATIA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20057ATIA/VY+?
MAX20057ATIA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20057ATIA/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 MAX20057ATIA/VY+?
For technical support, including MAX20057ATIA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20057ATIA/VY+ requirements.
6.How does Aetrix verify that MAX20057ATIA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20057ATIA/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 MAX20057ATIA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20057ATIA/VY+?
All MAX20057ATIA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20057ATIA/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 MAX20057ATIA/VY+ part is unused and in its original packaging.
Return procedure for MAX20057ATIA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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