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Analog Devices Inc./Maxim Integrated MAX20057ATIE/VY+T
- Part No.:
- MAX20057ATIE/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20057ATIE/VY+T.pdf
- Description:
- IC REG BOOST ADJ 3.5A DL 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,506
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Product details
Overview
MAX20057ATIE/VY+T 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 from 3.5V–36V input and supporting cold-crank down to 2V battery voltage. It delivers regulated outputs for instrument clusters and start-stop systems with 2.1MHz/400kHz selectable switching, spread-spectrum EMI reduction, and -40°C to +125°C operation.
For engineers reviewing the MAX20057ATIE/VY+T datasheet, MAX20057ATIE/VY+T pinout, MAX20057ATIE/VY+T application, or MAX20057ATIE/VY+T equivalent, key selection criteria include its dual-phase buck architecture, crank-ready 2V dropout capability, FSYNC-programmable operation modes (forced PWM, skip, PLL-sync), thermal shutdown at 170°C, and TQFN-EP 5mm × 5mm 28-pin package with exposed pad for automotive thermal reliability.
Technical Context
The MAX20057ATIE/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. Its boost controller uses current-mode regulation with 50mV current-sense threshold and supports SEPIC configuration for wide-input stabilization during cold-crank.
FSYNC enables three functional modes: forced fixed-frequency (FPWM), skip mode (ultra-low 8–10μA quiescent current), and phase-locked synchronization to external clock; spread spectrum (±6% frequency dither) is factory-enabled and disabled during external sync. Thermal protection triggers shutdown at 170°C with 20°C hysteresis, and undervoltage lockout ensures safe startup above 3.1V BIAS and 4.5V SUP thresholds.
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 ±1% (PWM mode), 3.5A max continuous current, 95% max duty cycle |
| Buck2 Output | Fixed 3.3V ±1% (PWM mode), 2A max continuous current, 180° phase shift vs Buck1 |
| Boost Output | Fixed 10V ±0.25V, 36V max input, 50mV current-limit threshold for low-loss sensing |
| Switching Frequency | Factory-set 2.1MHz (±6% spread spectrum) or 400kHz; FSYNC-selectable between FPWM/skip/PLL-sync |
| Quiescent Current | 10μA (5V buck on), 8μA (3.3V buck on), 30μA (all regulators active), 1μA (all disabled) |
| Thermal Protection | 170°C shutdown with 20°C hysteresis; θJA = 27°C/W on 4-layer board |
| Operating Temperature | -40°C to +125°C ambient, qualified per AEC-Q100 Grade 0 |
Pinout & Package
MAX20057ATIE/VY+T is housed in a thermally enhanced 5mm × 5mm, 28-pin TQFN-EP package (package code T2855Y+5C) with exposed pad soldered to PCB ground for optimal heat dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Independent enable inputs | High-voltage tolerant (to 40V), allow individual sequencing of buck1, buck2, and boost controllers |
| FB1, FB2, FB3 | Feedback inputs | Regulated to 1.0V ±1.5%; support fixed output (tie to BIAS) or adjustable 1V–14V via resistor divider |
| LX1, LX2 | Buck switch node outputs | Drive external high-side MOSFETs; require ceramic bootstrap capacitors (BST1/BST2) for gate drive |
| PGOOD1, PGOOD2 | Open-drain power-good indicators | Assert low when output drops below 93.5% VOUT; high-impedance above 95% VOUT - used for rail sequencing |
| FSYNC | External clock sync input | Accepts 250kHz–2.6MHz signal; controls mode (skip/FPWM/PLL) and sets 180° phase shift between buck outputs |
| DL | Boost N-MOSFET gate driver | Sources/sinks 1.67A peak; powered by BIAS LDO or EXTVCC - compatible with logic-level MOSFETs |
| BIAS, EXTVCC | Internal LDO output / switchover input | 5V BIAS output (bypass ≥2.2μF); EXTVCC accepts 3.25V–5.5V to disable internal LDO and reduce dissipation |
| AGND, PGND1–PGND3 | Analog & power grounds | Separate AGND (quiet reference) and dedicated PGND pins per converter - critical for noise isolation and thermal path integrity |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase 2.1MHz buck regulation | 180° interleaving cuts input ripple by >90%, enabling smaller input capacitors and reducing EMI filter size |
| Cold-crank preboost support | Boost controller maintains buck regulation during 2V battery dips - eliminates system brownouts in start-stop cycles |
| Spread-spectrum EMI reduction | ±6% triangular dither at 2.1MHz (110μs period) lowers peak radiated emissions without compromising regulation stability |
| Ultra-low quiescent current | 8–10μA per active buck rail meets OEM standby power budgets for always-on automotive modules |
| Integrated thermal protection | 170°C junction shutdown with 20°C hysteresis prevents latch-up during sustained overload or poor heatsinking |
| Flexible power supply sequencing | Three independent EN pins + PGOOD outputs enable deterministic power-up/down order for multi-rail SoCs and MCUs |
Applications
| Instrument Cluster Power | Start-Stop System Control |
|---|---|
Use Scenario: Powering LCD display, microcontroller, and CAN transceiver in digital dashboard with variable load and vibration exposure. IC Role / Device Role / Timing Role: Primary PMIC delivering 5V/3.3V rails and preboost-stabilized 10V for backlight drivers during engine cranking. Use Value: Maintains display functionality and MCU operation through 2V battery dips; 2.1MHz switching avoids AM band interference in cabin audio. | Use Scenario: Supplying engine control unit (ECU), sensors, and actuators during repeated stop-start cycles with rapid voltage transients. IC Role / Device Role / Timing Role: Triple-output regulator providing isolated, sequenced power to safety-critical subsystems with crank-ready hold-up. Use Value: Prevents ECU reset during cold-crank; 180° buck phasing reduces alternator load ripple and extends battery life. |
| Navigation Head Unit | Distributed Automotive DC System |
Use Scenario: Powering GPS module, touchscreen controller, and audio amplifier in infotainment head unit with strict EMI limits. IC Role / Device Role / Timing Role: Central PMIC generating clean 5V/3.3V/10V rails while suppressing conducted/radiated noise via spread spectrum and phase interleaving. Use Value: Meets CISPR 25 Class 5 radiated emissions; FSYNC sync allows alignment with system clock to avoid beat frequencies. | Use Scenario: Modular power distribution across ADAS camera, radar, and domain controller nodes in zonal architecture. IC Role / Device Role / Timing Role: Local PMIC converting 12V battery to point-of-load voltages with thermal-aware shutdown and remote PGOOD signaling. Use Value: Enables hot-swap capability and fault containment; EXTVCC switchover improves light-load efficiency when powered from downstream buck output. |
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 |
|---|---|---|---|
| MPQ4333-AEC1 | Single 3.5A buck + dual 2A bucks; no integrated boost; 2.2MHz fixed freq; QFN-24 | Lacks cold-crank preboost capability; requires external boost for sub-3.5V operation | Choose when boost is unnecessary and board space is constrained - smaller package but no crank-ready function |
| TPS65321A-Q1 | Triple buck (3A/2A/1.5A) + linear regulators; no boost; 2.1MHz; HTSSOP-38 | No high-voltage boost controller; relies on external preboost or higher minimum input (4.5V UVLO) | Select for cost-sensitive non-cold-crank applications where linear regulators simplify low-noise analog rail generation |
Compared with MPQ4333-AEC1 and TPS65321A-Q1, MAX20057ATIE/VY+T uniquely integrates a 36V boost controller enabling true 2V cold-crank operation, while maintaining 2.1MHz switching and automotive thermal robustness in a compact 5mm × 5mm footprint - essential for next-gen start-stop and ADAS power domains.
Availability
MAX20057ATIE/VY+T 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 MAX20057ATIE/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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and consumer markets with AEC-Q100-qualified power solutions.
The MAX20057ATIE/VY+T belongs to Analog Devices' automotive PMIC portfolio, engineered specifically for crank-ready, EMI-conscious power delivery in start-stop, ADAS, and infotainment systems operating across -40°C to +125°C.
FAQ
What is the minimum input voltage supported by MAX20057ATIE/VY+T during cold-crank conditions?
The MAX20057ATIE/VY+T supports cold-crank operation down to 2.05V battery input when the integrated boost controller is enabled. This is achieved by preboosting the input to maintain regulation of the 5V and 3.3V buck outputs - verified per datasheet Section "Absolute Maximum Ratings" and "Detailed Description" cold-crank specifications. The boost UVLO falling threshold can be disabled to sustain regulation even below 2V in validated designs.
Does MAX20057ATIE/VY+T support external clock synchronization, and what are the valid frequency ranges?
Yes, MAX20057ATIE/VY+T supports external clock synchronization via the FSYNC pin. For 2.1MHz internal operation, FSYNC accepts 1.8MHz–2.6MHz signals; for 400kHz operation, it accepts 250kHz–550kHz. The device uses a PLL to lock internal timing to the external clock, with precise edge alignment: LX1 falling edge to FSYNC rising edge, LX2 falling edge to FSYNC falling edge - confirmed in "Pin Description" and "Detailed Description" sections.
What is the purpose of the EXTVCC pin on MAX20057ATIE/VY+T, and how does it affect efficiency?
The EXTVCC pin on MAX20057ATIE/VY+T allows bypassing the internal 5V BIAS LDO by applying 3.25V–5.5V externally - reducing internal power dissipation and improving light-load efficiency. When active, EXTVCC powers internal circuitry directly and disables the BIAS LDO; if voltage drops below ~3V, the LDO re-enables automatically. This feature is documented in "Detailed Description" under "EXTVCC Switchover" with efficiency impact quantified in typical operating characteristics.
How does the MAX20057ATIE/VY+T implement overcurrent protection across its three power channels?
MAX20057ATIE/VY+T uses cycle-by-cycle current limiting with hiccup-mode recovery on all three channels. When inductor current exceeds the set threshold (e.g., 4.5–7.5A for Buck1), the affected channel shuts off. If output voltage falls below 0.7V, the IC enters hiccup mode: disabling the channel for ~10ms before retrying. This behavior is specified in "Overcurrent Protection" section and validated in electrical characteristics tables for Buck1/Buck2 current limits and boost CSP threshold (50mV).
Can MAX20057ATIE/VY+T generate adjustable output voltages, and what is the supported range?
Yes, MAX20057ATIE/VY+T supports adjustable outputs for both buck converters (1V–14V) and the boost controller (adjustable option). This is achieved by connecting FB1/FB2/FB3 to resistor dividers instead of tying them to BIAS. Feedback is regulated to 1.0V ±1.5%, enabling precise scaling; the 1V–14V range is explicitly stated in "Detailed Description" and "Electrical Characteristics" under "Output Voltage Adjustable Range".
MAX20057ATIE/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)
MAX20057ATIE/VY+T FAQ
1.How can I place an order for MAX20057ATIE/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20057ATIE/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 MAX20057ATIE/VY+T reliable?
The price and inventory of MAX20057ATIE/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 MAX20057ATIE/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20057ATIE/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20057ATIE/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20057ATIE/VY+T?
MAX20057ATIE/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20057ATIE/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 MAX20057ATIE/VY+T?
For technical support, including MAX20057ATIE/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20057ATIE/VY+T requirements.
6.How does Aetrix verify that MAX20057ATIE/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20057ATIE/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 MAX20057ATIE/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20057ATIE/VY+T?
All MAX20057ATIE/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20057ATIE/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 MAX20057ATIE/VY+T part is unused and in its original packaging.
Return procedure for MAX20057ATIE/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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