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Analog Devices Inc./Maxim Integrated MAX20030BATMI/V+T
- Part No.:
- MAX20030BATMI/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
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MAX20030BATMI/V+T.pdf
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Product details
Overview
MAX20030BATMI/V+T from Maxim Integrated is an automotive-grade dual synchronous step-down controller with integrated preboost converter and high-voltage 200mA LDO, designed for front-end power management in cold-crank–capable systems. It delivers regulated 5V (Buck1) and 3.3V (Buck2) outputs, operates from 3.5V to 42V input, supports 2.2MHz switching, and maintains regulation down to 2V battery input via its synchronous boost stage.
For engineers reviewing the MAX20030BATMI/V+T datasheet, MAX20030BATMI/V+T pinout, MAX20030BATMI/V+T application, or MAX20030BATMI/V+T equivalent, key selection considerations include its 17µA quiescent current with Buck1 enabled, 180° out-of-phase dual-buck operation, resistor-programmable frequency (220kHz–2.2MHz), spread-spectrum EMI reduction, and thermally enhanced 48-pin TQFN package with exposed pad.
Technical Context
The MAX20030BATMI/V+T implements three independent current-mode controllers: two 180° phase-shifted synchronous buck controllers (Buck1/Buck2) and one synchronous boost controller (preboost), all sharing a common BIAS rail and AGND/PGND partitioning. Its architecture enables simultaneous regulation of multiple rails while minimizing input ripple and AM-band interference through high-frequency operation and spread-spectrum modulation.
Control logic integrates programmable EN inputs (EN1–EN4), dedicated FSYNC for external clock synchronization, FOSC for resistor-set frequency tuning, and SPS for spread-spectrum enable/disable. Protection includes cycle-by-cycle current limiting, thermal shutdown at 170°C, overvoltage/undervoltage lockout, and PGOOD monitoring with 95% rising threshold for each buck output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 42V normal operation; extends to 2V with preboost enabled - ensures continuous regulation during automotive cold-crank events. |
| Quiescent Current (IQ) | 17µA with 3.3V Buck on; 25µA with 5V Buck or LDO on; 65µA with all controllers active - enables always-on system compliance. |
| Switching Frequency | Resistor-programmable 220kHz to 2.2MHz; ±6% spread-spectrum option - allows compact magnetics and avoids AM band (0.53–1.71MHz). |
| Buck Output Accuracy | ±1.5% over temp/voltage/load for VOUT1 (5V) and VOUT2 (3.3V); 1V feedback reference with ±1% tolerance - guarantees stable MCU and interface rail performance. |
| LDO Output | 5V or factory-configured 3.3V; 200mA max; 500mV dropout at 300mA - powers high-side gate drivers or auxiliary circuits without external regulators. |
| Thermal Performance | θJA = 23.3°C/W on 4-layer board; θJC = 1°C/W; 150°C max junction temperature - supports sustained operation in under-hood environments. |
| Protection Features | Cycle-by-cycle current limit, thermal shutdown (170°C, 20°C hysteresis), UVLO on BIAS (2.6V fall), OVLO on outputs (109% nominal) - ensures robustness in harsh automotive transients. |
Pinout & Package
Package: 48-pin thermally enhanced TQFN (7mm × 7mm, exposed pad), RoHS-compliant, rated for -40°C to +125°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Main supply input | Accepts 3.5V–42V; connects to preboost output; requires local bulk capacitance for dual-buck peak current demands. |
| INLDO | LDO input | Supplies HV LDO; must be ≥ VOUT4 + 0.5V to avoid dropout; decoupled with 4.7µF ceramic capacitor. |
| OUT1 / OUT2 | Buck output sense & current-sense return | Provides feedback path and negative CS node; used with internal 5V/3.3V dividers or external resistive networks. |
| FB1 / FB2 / FB3 / FB4 | Feedback inputs | FB1/FB2 regulate to 1.00V (±1%); FB3 to 1.005V; FB4 sets LDO voltage via resistor divider (1.5V–10V range). |
| EN1–EN4 | Independent enable inputs | Active-high, HV-tolerant (up to 42V); EN3 supports precision threshold for crank-ready boost activation. |
| PGOOD1 / PGOOD2 | Open-drain power-good indicators | Assert low during soft-start or fault; require external pull-up to BIAS; 95% rising threshold ensures reliable rail sequencing. |
| FOSC | Frequency programming | Connects to ground via resistor (e.g., 12kΩ → 2.2MHz); enables precise EMI optimization across load/temperature. |
| SPS | Spread-spectrum control | Logic-high enables ±6% frequency dithering; reduces peak EMI by >10dB without affecting regulation or efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 2.2MHz buck controllers with 180° phase shift | Reduces input capacitance requirement by ~50% and cuts RMS input ripple vs. in-phase operation - critical for space-constrained automotive modules. |
| Synchronous preboost stage (2V–36V input support) | Enables uninterrupted 5V/3.3V regulation during cold-crank (e.g., 2V battery dip) without external boost IC - eliminates system brownout. |
| 17µA IQ with 3.3V buck enabled | Meets OEM standby power budgets for infotainment and ADAS domains where <20µA system IQ is mandated. |
| 50ns minimum on-time at 2.2MHz | Guarantees skip-free PWM operation for 3.3V output directly from 12V battery - prevents audible noise and improves light-load stability. |
| Thermally enhanced 48-pin TQFN with exposed pad | θJC = 1°C/W enables direct PCB copper thermal vias to internal ground plane - sustains 3A per buck channel at +105°C ambient. |
| Integrated 200mA HV LDO with programmable output | Eliminates discrete LDO for biasing gate drivers or sensors; factory-set 5V or 3.3V option simplifies BOM and layout. |
Applications
| Instrument Cluster Power Supply | Navigation Head Unit Front-End |
|---|---|
|
Use Scenario: Powers microcontroller, TFT display, CAN transceiver, and backlight LED driver in digital instrument clusters subject to ISO 16750-2 load dump and cold-crank. IC Role / Device Role / Timing Role: Primary front-end PMIC delivering isolated 5V (MCU core), 3.3V (peripherals), and 5V LDO (gate drivers) with synchronized timing and rail sequencing. Use Value: Maintains all outputs in regulation during 2V cold-crank dips; 2.2MHz operation avoids AM radio interference; PGOOD signals ensure safe boot sequencing. |
Use Scenario: Supplies processor SoC, DDR memory, GPS/GNSS RF front-end, and audio codec in automotive navigation systems requiring ultra-low standby IQ. IC Role / Device Role / Timing Role: Dual-buck controller with phase interleaving provides low-noise, high-efficiency power conversion; preboost ensures uninterrupted operation during engine stop-start cycles. Use Value: 17µA IQ with 3.3V rail active meets OEM "always-on" requirements; spread-spectrum mode suppresses EMI near sensitive GNSS receivers. |
| Distributed DC Power System | ADAS Camera Module Power |
|
Use Scenario: Centralized power management unit distributing regulated rails to multiple ECUs (e.g., body control, HVAC, lighting) across vehicle domain architecture. IC Role / Device Role / Timing Role: High-voltage input interface with dual-buck + boost + LDO integration serves as scalable front-end for modular power distribution nodes. Use Value: 42V max input withstands load dump; 180° phase shift minimizes bulk capacitor size; EN1–EN4 allow independent rail enable/disable for dynamic power gating. |
Use Scenario: Powers image sensor, ISP, and serializer in rear-view or surround-view camera modules mounted near engine bay with extreme thermal cycling. IC Role / Device Role / Timing Role: Automotive-qualified PMIC providing clean, sequenced 3.3V (sensor), 1.8V (ISP via external LDO), and 5V (serializer) with thermal shutdown protection. Use Value: -40°C to +125°C operation ensures reliability; 50ns min on-time prevents subharmonic oscillation at 2.2MHz; exposed pad enables direct thermal coupling to heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail automotive power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20031BATMI/V+T | Same pinout and package; differs only in EN3 logic polarity (active-low vs. MAX20030's active-high) and minor BIAS UVLO thresholds. | Requires matching EN3 control signal polarity; identical performance in cold-crank, EMI, and thermal behavior. | Select MAX20031BATMI/V+T when system-level EN3 signal is open-drain or driven by comparator with inverted output. |
| TPS65321A-Q1 | Triple-buck (not dual + boost); no integrated preboost; higher IQ (45µA typical); fixed 2.1MHz frequency; no spread-spectrum. | Lacks cold-crank capability below 3.5V; suitable only for systems with stabilized 5V–24V input or external boost stage. | Choose TPS65321A-Q1 only if preboost is unnecessary and design prioritizes triple-rail integration over crank readiness. |
Compared with MAX20030BATMI/V+T, MAX20031BATMI/V+T offers identical functionality with inverted EN3 logic, enabling drop-in use where control polarity matches; TPS65321A-Q1 provides triple buck outputs but omits preboost and spread-spectrum, making it unsuitable for 2V cold-crank or stringent EMI environments.
Availability
MAX20030BATMI/V+T is available at Aetrix Electronics and suitable for instrument cluster, navigation head unit, and distributed DC power systems requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.
Supply support for MAX20030BATMI/V+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
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets, with deep expertise in power management and reliability engineering.
The MAX20030/MAX20031 product line was engineered specifically for automotive front-end power supplies demanding cold-crank resilience, ultra-low IQ, and EMI-compliant high-frequency operation in safety-critical domains.
FAQ
What is the cold-crank capability of the MAX20030BATMI/V+T?
The MAX20030BATMI/V+T maintains regulation of both Buck1 and Buck2 outputs down to a 2V battery input by activating its integrated synchronous preboost controller. This feature is explicitly validated in the datasheet's electrical characteristics and typical operating curves (e.g., toc27 "Cold Crank") and enables reliable operation during automotive cranking events without external circuitry.
Does the MAX20030BATMI/V+T support external clock synchronization?
Yes, the MAX20030BATMI/V+T supports external clock synchronization via the FSYNC pin, which accepts frequencies from 250kHz to 2.6MHz depending on the FOSC resistor value. The device synchronizes its internal switching frequency to the external clock with 1:1 ratio, enabling deterministic EMI reduction and system-level timing alignment in multi-PMIC architectures.
What is the function of the TERM pin on the MAX20030BATMI/V+T?
The TERM pin on the MAX20030BATMI/V+T serves as a ground switch for the preboost feedback divider. When the boost controller is disabled, TERM opens to disconnect the feedback network, preventing leakage paths that could affect regulation accuracy. Its resistance is specified at 70–150Ω when active, ensuring precise voltage setting during boost operation.
Can the MAX20030BATMI/V+T operate without the BIAS regulator?
Yes, the MAX20030BATMI/V+T can operate without using the internal BIAS LDO by applying 3.25V–5.5V to the EXTVCC pin, which disables the BIAS regulator and powers internal circuitry directly. This mode reduces total system IQ and is recommended when an external 5V rail is already available, as confirmed in the Electrical Characteristics table under "EXTVCC Operating Range".
What package type and thermal specifications apply to the MAX20030BATMI/V+T?
The MAX20030BATMI/V+T uses a 48-pin TQFN package (7mm × 7mm, exposed pad), outlined in JEDEC MO-220, with thermal resistance θJA = 23.3°C/W and θJC = 1°C/W on a four-layer board. The exposed pad must be soldered to a thermal pad on the PCB with ≥6 vias to internal ground planes to achieve rated power dissipation and junction temperature limits.
MAX20030BATMI/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
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- Output Type:
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- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
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- Grade:
- -
- Qualification:
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- Mounting Type:
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- Supplier Device Package:
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MAX20030BATMI/V+T FAQ
1.How can I place an order for MAX20030BATMI/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20030BATMI/V+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 MAX20030BATMI/V+T reliable?
The price and inventory of MAX20030BATMI/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20030BATMI/V+T is usually 5 days.
3.What payment methods are accepted for MAX20030BATMI/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20030BATMI/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20030BATMI/V+T?
MAX20030BATMI/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20030BATMI/V+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 MAX20030BATMI/V+T?
For technical support, including MAX20030BATMI/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20030BATMI/V+T requirements.
6.How does Aetrix verify that MAX20030BATMI/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20030BATMI/V+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 MAX20030BATMI/V+T meets industry standards.
7.What is the process for return or replacement of MAX20030BATMI/V+T?
All MAX20030BATMI/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20030BATMI/V+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 MAX20030BATMI/V+T part is unused and in its original packaging.
Return procedure for MAX20030BATMI/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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