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Analog Devices Inc./Maxim Integrated MAX20030BATMI/V+
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- MAX20030BATMI/V+
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- Analog Devices Inc./Maxim Integrated
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MAX20030BATMI/V+.pdf
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Product details
Overview
MAX20030BATMI/V+ from Maxim Integrated is an automotive-grade dual synchronous step-down controller with integrated preboost circuit and high-voltage 200mA LDO, designed for front-end power supply in cold-crank–capable systems. It delivers regulated 5V (Buck1) and 3.3V (Buck2) outputs, supports input voltage down to 2V via preboost, operates up to 2.2MHz switching frequency, and features 17µA quiescent current with Buck1 enabled - ideal for instrument cluster and navigation head unit power rails.
For engineers reviewing the MAX20030BATMI/V+ datasheet, MAX20030BATMI/V+ pinout, MAX20030BATMI/V+ application, or MAX20030BATMI/V+ equivalent, key selection considerations include its 48-pin TQFN package, dual-phase 180° out-of-phase operation, resistor-programmable 220kHz–2.2MHz frequency, spread-spectrum EMI reduction, and -40°C to +125°C automotive temperature rating.
Technical Context
The MAX20030BATMI/V+ implements three independent current-mode controllers: two 2.2MHz synchronous buck controllers operating 180° out of phase to reduce input ripple, and a dedicated synchronous boost controller enabling regulation during cold-crank (VIN ≥ 2V). Its architecture integrates a high-voltage 200mA LDO with adjustable output (3.3V/5V factory-set), feedback reference of 1.00V (buck) and 1.25V (LDO), and thermally enhanced 7mm × 7mm TQFN-48 package with exposed pad.
Control logic includes programmable frequency via FOSC resistor, SYNC input supporting forced-PWM, skip mode, or external clock synchronization, and SPS pin enabling ±6% frequency modulation. Protection includes cycle-by-cycle current limit, thermal shutdown at 170°C, overvoltage/undervoltage lockout, and PGOOD monitoring with 95% rising threshold for both buck outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V–42V normal operation; extends to 2V with preboost enabled - ensures uninterrupted regulation during automotive cold-crank events. |
| Quiescent Current (IQ) | 17µA with 3.3V buck enabled - enables always-on functionality in low-power vehicle subsystems without battery drain. |
| Switching Frequency | 220kHz–2.2MHz, resistor-programmable via FOSC - allows optimization for size (high-freq) or efficiency (low-freq) and avoids AM band interference. |
| Buck Output Accuracy | ±1.5% over temp/voltage/load - guarantees stable 5V (Buck1) and 3.3V (Buck2) rails for sensitive microcontrollers and displays. |
| LDO Output Capability | 300mA max load, 500mV dropout at 300mA - supports high-current analog or interface ICs requiring clean, low-noise bias. |
| Thermal Performance | θJA = 23.3°C/W on 4-layer board - enables reliable operation at full load in sealed automotive enclosures up to +125°C ambient. |
| EMI Reduction | Pin-selectable ±6% spread spectrum + 50ns min on-time - reduces peak radiated emissions without compromising transient response. |
Pinout & Package
MAX20030BATMI/V+ is housed in a thermally enhanced 7mm × 7mm, 48-pin TQFN package with exposed pad (EP = GND), outline number 21-0144, land pattern 90-0464. The package supports high-power dissipation (2963mW at +70°C) and low thermal resistance (θJC = 1°C/W).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3, EN4 | Independent enable inputs | Allow sequenced startup and individual channel control - EN3 is precision-threshold active-low for boost activation during low-VIN conditions. |
| FB1, FB2, FB3, FB4 | Feedback inputs | FB1/FB2 set buck outputs (5V/3.3V fixed or 1V–10V adjustable); FB3 regulates boost to 1.005V; FB4 sets LDO to 1.25V reference for 3.3V/5V factory options. |
| LX1, LX2, LX3 | Switch-node connections | Drive external high-side MOSFETs; LX1/LX2 for buck channels, LX3 for boost - require low-ESR ceramic capacitors to PGND for gate drive stability. |
| PGOOD1, PGOOD2 | Open-drain power-good indicators | Assert low during soft-start or fault; high-impedance when output is within ±5% of nominal - enable system-level power sequencing and fault reporting. |
| FSYNC, FOSC, SPS | Frequency control pins | FSYNC accepts external clock (1.8–2.6MHz); FOSC sets base frequency via resistor; SPS enables/disables ±6% spread spectrum - collectively optimize EMI and efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 180° out-of-phase buck controllers | Reduces input capacitor RMS current by ~30% vs. in-phase operation - lowers required bulk capacitance and improves EMI profile. |
| Synchronous preboost controller | Enables regulation down to 2V input - eliminates need for external boost stage in stop-start and cold-crank automotive applications. |
| Integrated 200mA HV LDO | Accepts 3.5V–36V input and delivers factory-set 3.3V/5V output - powers CAN transceivers, sensors, or MCU I/O rails without discrete regulators. |
| Ultra-low IQ modes | 65µA with all controllers enabled - meets OEM requirements for <100µA standby consumption in always-on domains. |
| Robust protection suite | Cycle-by-cycle current limit, thermal shutdown (170°C), UVLO/OVLO, and PGOOD monitoring - ensures fail-safe operation in harsh automotive environments. |
| Automotive qualification | AEC-Q100 Grade 0 (−40°C to +125°C junction), CDM ESD ≥500V - certified for safety-critical body control and infotainment modules. |
Applications
| Instrument Cluster Power | Navigation Head Unit |
|---|---|
Use Scenario: Powering TFT display, graphics processor, and touch controller in digital instrument clusters with stop-start capability. IC Role / Device Role / Timing Role: Front-end power manager delivering isolated 5V (MCU core), 3.3V (interface), and 3.3V LDO (CAN PHY) rails. Use Value: Preboost sustains regulation during 2V cold-crank; 180° phase shift minimizes input ripple on shared battery rail. |
Use Scenario: Supplying SoC, audio codec, GPS receiver, and USB hub in automotive navigation systems. IC Role / Device Role / Timing Role: Dual-buck + LDO power tree with independent enable sequencing for boot-order compliance. Use Value: 17µA IQ enables always-on GPS assist; spread spectrum reduces radiated emissions near FM/AM antennas. |
| Distributed DC Power System | Radio Head Unit |
Use Scenario: Centralized power distribution across multiple ECUs in zonal architectures with wide VIN range. IC Role / Device Role / Timing Role: Primary DC-DC controller feeding secondary point-of-load converters via 5V/3.3V buses. Use Value: 42V absolute max input withstands load-dump transients; thermally robust TQFN simplifies heatsinking in compact zones. |
Use Scenario: Providing clean, low-noise bias to RF front-end, audio amplifiers, and digital signal processors in AM/FM radio modules. IC Role / Device Role / Timing Role: High-PSRR LDO (65dB @100Hz) and low-noise buck regulators powering sensitive analog stages. Use Value: 50ns minimum on-time prevents subharmonic oscillation at 2.2MHz; PGOOD signals enable fast fault isolation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-buck + boost power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20031BATMI/V+ | Same pinout and package; differs only in EN3 logic polarity (active-high vs. MAX20030's active-low) and minor CDM ESD rating (475V vs. 500V). | Compatible in identical layouts; requires firmware adjustment if EN3 is used for hardware-controlled cold-crank detection. | Select MAX20031BATMI/V+ when active-high enable logic aligns with system control architecture. |
| LM61480QRNXTQ1 | Single 2.2MHz buck controller (no boost, no LDO); 3.5V–36V input, 10A output; lacks cold-crank support below 3.5V. | Requires external boost stage for sub-3.5V operation; suitable only where cold-crank is handled upstream. | Choose LM61480QRNXTQ1 for cost-sensitive single-rail designs without cold-crank requirement. |
Compared with MAX20030BATMI/V+, MAX20031BATMI/V+ offers identical performance with swapped EN3 polarity - ideal for design reuse with minimal firmware change - while LM61480QRNXTQ1 provides higher current per channel but omits integrated preboost and LDO, increasing BOM count and layout complexity in cold-crank–capable systems.
Availability
MAX20030BATMI/V+ is available at Aetrix Electronics and suitable for instrument cluster, navigation head unit, and distributed DC power systems requiring stable component supply across automotive production lifecycles.
Supply support for MAX20030BATMI/V+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX20030/MAX20031 product line was engineered specifically for automotive front-end power supplies - integrating dual buck, preboost, and HV LDO to replace multi-chip solutions in crank-ready infotainment and ADAS subsystems.
FAQ
What is the factory-set LDO output voltage for MAX20030BATMI/V+?
The MAX20030BATMI/V+ has a factory-configured LDO output of 3.3V, confirmed by its "I" suffix in the part number (per Maxim's ordering guide: "I" = 3.3V LDO, "J" = 5V LDO). This is validated in the Electrical Characteristics table under VOUT4_3P3V (3.234V–3.366V at 1mA–300mA load) and FB4 feedback voltage (1.25V typical).
Does MAX20030BATMI/V+ support synchronization to an external clock?
Yes, MAX20030BATMI/V+ supports external clock synchronization via the FSYNC pin, which accepts frequencies from 250kHz to 2.6MHz depending on RFOSC setting. The device synchronizes at a 1:1 ratio and maintains phase alignment - critical for noise-sensitive radio head units where switching harmonics must avoid AM/FM bands.
What is the minimum input voltage at which MAX20030BATMI/V+ maintains regulation with preboost enabled?
With the preboost controller enabled, MAX20030BATMI/V+ maintains regulation down to 2V input - explicitly stated in the Absolute Maximum Ratings and General Description sections. This capability is verified under cold-crank test conditions (toc27) and enables uninterrupted operation during engine start in 12V automotive systems.
How does the EN3 pin function on MAX20030BATMI/V+?
On MAX20030BATMI/V+, EN3 is an active-low enable input for the preboost controller with a precision 0.95V threshold (±30mV hysteresis). When pulled below 0.92V, it turns on the boost stage to sustain buck regulation during low-VIN events - a hardware-based solution eliminating software intervention during cold-crank.
Is MAX20030BATMI/V+ qualified for automotive use?
Yes, MAX20030BATMI/V+ is AEC-Q100 Grade 0 qualified (−40°C to +125°C junction temperature), with CDM ESD rating of 500V on all pins. Its design includes automotive-specific protections: load-dump tolerance (42V abs max), thermal shutdown at 170°C, and validated operation across temperature, input voltage, and load transients per ISO 16750.
MAX20030BATMI/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Strip
- Product Status:
- Active
- Function:
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- Output Configuration:
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- Topology:
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- Output Type:
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- Number of Outputs:
- -
- Voltage - Input (Min):
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- Voltage - Input (Max):
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- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
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- Current - Output:
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- Frequency - Switching:
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- Synchronous Rectifier:
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MAX20030BATMI/V+ FAQ
1.How can I place an order for MAX20030BATMI/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20030BATMI/V+ 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+ reliable?
The price and inventory of MAX20030BATMI/V+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20030BATMI/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20030BATMI/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20030BATMI/V+?
MAX20030BATMI/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20030BATMI/V+ 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+?
For technical support, including MAX20030BATMI/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20030BATMI/V+ requirements.
6.How does Aetrix verify that MAX20030BATMI/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20030BATMI/V+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX20030BATMI/V+?
All MAX20030BATMI/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20030BATMI/V+, 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+ part is unused and in its original packaging.
Return procedure for MAX20030BATMI/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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