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Analog Devices Inc./Maxim Integrated MAX20030BATMC/V+T
- Part No.:
- MAX20030BATMC/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX20030BATMC/V+T.pdf
- Description:
- IC REG BUCK SMD
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Product details
Overview
MAX20030BATMC/V+T from Maxim Integrated is an automotive-grade dual synchronous step-down controller with integrated preboost circuitry 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 2V input (with preboost enabled), supports up to 2.2MHz switching, and features 17µA quiescent current with Buck1 enabled - enabling ultra-low-power always-on domains in instrument clusters and head units.
For engineers reviewing the MAX20030BATMC/V+T datasheet, MAX20030BATMC/V+T pinout, MAX20030BATMC/V+T application, or MAX20030BATMC/V+T equivalent, key selection criteria include its 48-pin TQFN package, -40°C to +125°C AEC-Q100 qualified operation, resistor-programmable 220kHz–2.2MHz frequency, spread-spectrum EMI reduction, and dual-phase 180° out-of-phase buck control for reduced input ripple in distributed automotive DC systems.
Technical Context
The MAX20030BATMC/V+T implements three independent current-mode controllers: two synchronous buck channels operating 180° out of phase at up to 2.2MHz, and a dedicated synchronous boost (preboost) channel activated below ~3.5V input to sustain regulation down to 2V battery. Its architecture includes separate COMPx error amplifiers, programmable soft-start (3–8ms), cycle-by-cycle current limiting via CS1/CS2/CS3P–CS3N inputs, and thermal shutdown at 170°C with 20°C hysteresis.
Control logic integrates three frequency modes - forced PWM, skip mode (ultra-low IQ), and external synchronization via FSYNC - selectable via pin configuration and resistor programming on FOSC. The IC also embeds a 5V BIAS LDO, a 3.5–36V-input HV LDO (OUT4), and power-good monitoring (PGOOD1/PGOOD2) with 92–97% output threshold detection and 20µs debounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V–42V normal operation; extends to 2V with preboost enabled - supports full automotive cold-crank profile without output dropout. |
| Quiescent Current (IQ) | 17µA with 3.3V Buck enabled; 65µA with all controllers active - enables low-power always-on functionality in vehicle wake-up circuits. |
| Switching Frequency | Resistor-programmable 220kHz–2.2MHz; ±6% spread-spectrum option - allows AM-band avoidance and compact magnetics design. |
| Output Accuracy | ±1.5% over temp for Buck1 (5V) and Buck2 (3.3V); ±1% for LDO (OUT4) - ensures reliable microcontroller and sensor rail stability. |
| Thermal Performance | θJA = 23.3°C/W (4-layer board); junction-to-case θJC = 1°C/W - enables high-power density layout with exposed-pad thermal path. |
| Protection Features | Cycle-by-cycle current limit, overvoltage/undervoltage lockout, thermal shutdown, short-circuit protection - meets ASIL-B system-level safety requirements. |
| Operating Temperature | -40°C to +125°C ambient, junction rated to +150°C - qualified for under-hood and dashboard-mounted automotive modules. |
Pinout & Package
MAX20030BATMC/V+T is housed in a thermally enhanced 7mm × 7mm, 48-pin TQFN package with exposed pad (EP = GND). The package supports high-current routing and efficient heat dissipation in space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Main supply input | Accepts 3.5–42V; connects to preboost output; requires local bulk capacitance for dual-buck transient support. |
| LX1, LX2, LX3 | Switch-node connections | Drive external high-side MOSFETs; each serves as return rail for respective DHx gate driver (BSTx referenced). |
| DH1/DH2/DH3, DL1/DL2/DL3 | High- and low-side gate drivers | Provide 3–6Ω pull-up/pull-down strength; support fast switching with 20–30ns dead time to prevent shoot-through. |
| FB1/FB2/FB3/FB4 | Feedback inputs | Regulate to 1.0V (buck/boost) or 1.25V (LDO); enable fixed (BIAS-connected) or adjustable (resistor-divider) outputs. |
| EN1/EN2/EN3/EN4 | Independent enable inputs | Active-high digital controls for Buck1, Buck2, preboost, and HV LDO - allow flexible power sequencing and domain isolation. |
| PGOOD1/PGOOD2 | Open-drain power-good indicators | Assert low during soft-start, fault, or undervoltage; require external BIAS pull-up for logic-level signaling to MCU. |
| FOSC/FSYNC/SPS | Frequency and EMI control | FOSC sets switching frequency via resistor; FSYNC accepts external clock (250kHz–2.6MHz); SPS enables/disables spread spectrum. |
Key Features
| Feature | Design Value |
|---|---|
| Preboost controller | Enables continuous regulation at VIN ≥ 2V - eliminates need for external boost stage in cold-crank–critical applications like instrument clusters. |
| Dual 180° out-of-phase buck controllers | Reduces input capacitor RMS current by ~30% vs. in-phase operation - lowers ESR heating and extends capacitor lifetime in 12V/24V systems. |
| 50ns minimum on-time (typ) | Guarantees stable 3.3V output from 2.2MHz switching at 2V input - avoids pulse-skipping instability in low-VIN, high-VOUT ratio conditions. |
| Integrated 200mA HV LDO (OUT4) | Supports 3.5–36V input, 1.5–10V adjustable output, <500mV dropout at 200mA - powers CAN transceivers, sensors, or backup rails independently. |
| Spread-spectrum modulation (SPS) | ±6% frequency dithering reduces peak EMI by >10dB - meets CISPR 25 Class 5 radiated emissions limits without added shielding. |
| AEC-Q100 Grade-1 qualification | Validated for -40°C to +125°C operation with HTOL, TC, and ESD testing (HBM 2.5kV, CDM 500V) - suitable for safety-critical automotive ECUs. |
Applications
| Instrument Cluster Power Supply | Navigation Head Unit Front-End |
|---|---|
|
Use Scenario: Powers MCU, TFT display, and touch controller in digital dashboards requiring uninterrupted operation during engine cranking (2V–16V battery transients). IC Role / Device Role / Timing Role: Primary front-end regulator delivering isolated 5V (MCU core), 3.3V (peripherals), and 3.3V/5V LDO output with preboost sustaining regulation below 3.5V. Use Value: Eliminates external boost IC and reduces bill-of-materials by integrating dual buck, preboost, and HV LDO in single 7mm × 7mm package. |
Use Scenario: Supplies multiple voltage rails for infotainment SoC, audio codec, GPS receiver, and USB interface in automotive navigation systems. IC Role / Device Role / Timing Role: Dual-phase buck controller provides low-noise 5V/3.3V with 180° interleaving; LDO powers noise-sensitive analog blocks; preboost maintains uptime during stop-start cycles. Use Value: Achieves <15mVpp output ripple at 2.2MHz, enabling direct powering of RF receivers without additional LC filtering. |
| Distributed Body Control Module | ADAS Camera Power Subsystem |
|
Use Scenario: Delivers regulated power to door modules, seat controllers, and lighting drivers across wide input range (6V–42V) including load-dump events. IC Role / Device Role / Timing Role: High-voltage input tolerance and overvoltage lockout (42V max) protect downstream circuitry; PGOOD signals enable safe MCU reset sequencing. Use Value: Withstands 40V/100ms load dump per ISO 7637-2 Pulse 5a - no external TVS required on IN pin for most body electronics designs. |
Use Scenario: Powers image sensor, ISP, and serializer in rear-view or surround-view camera modules where EMI must not interfere with video signal integrity. IC Role / Device Role / Timing Role: Spread-spectrum mode and 2.2MHz fixed-frequency operation suppress AM-band interference; low IQ preserves battery during parking mode. Use Value: Meets CISPR 25 Class 5 radiated emissions with minimal layout changes - avoids costly re-spin for EMI compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail automotive power supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20031BATMC/V+T | Same pinout and feature set, but with different EN3 threshold (0.95V vs. 0.95V typ for MAX20030); identical preboost, buck, and LDO specs. | Designed for systems requiring tighter EN3 hysteresis (100mV) and optimized for higher-temperature preboost activation. | Select MAX20031 when precise cold-crank turn-on timing is required; otherwise MAX20030 offers identical performance for general-purpose front-end use. |
| TPS65321A-Q1 | Triple-output buck (3A/2A/1A), no integrated preboost; 2.2MHz max freq; 25µA IQ; 48-QFN package. | Lacks cold-crank capability below 3.5V; requires external boost for sub-3.5V operation; lower integration than MAX20030. | Choose TPS65321A-Q1 only if preboost is unnecessary and higher current per rail is prioritized over cold-crank resilience. |
Compared with MAX20031BATMC/V+T, the MAX20030BATMC/V+T offers identical packaging, thermal performance, and functional integration but targets broader EN3 threshold tolerance; versus TPS65321A-Q1, it uniquely embeds preboost for true 2V–42V operation - making it the only drop-in solution for crank-ready front-end power without external components.
Availability
MAX20030BATMC/V+T is available at Aetrix Electronics and suitable for instrument cluster power supplies, navigation head units, and distributed body control modules requiring stable component supply across automotive production lifecycles.
Supply support for MAX20030BATMC/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) 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 conversion - integrating dual buck, preboost, and HV LDO to replace discrete solutions in crank-capable ECUs while meeting AEC-Q100 Grade-1 and CISPR 25 requirements.
FAQ
What is the minimum input voltage supported by MAX20030BATMC/V+T during cold-crank conditions?
The MAX20030BATMC/V+T supports operation down to 2V input when the integrated preboost controller is enabled. This capability ensures continuous regulation of both Buck1 (5V) and Buck2 (3.3V) outputs during severe automotive cold-crank events, eliminating the need for external boost circuitry. The preboost activates automatically when VIN drops below ~3.5V, maintaining stable output rails without interruption.
Does MAX20030BATMC/V+T support synchronization to an external clock source?
Yes, MAX20030BATMC/V+T supports external clock synchronization via the FSYNC pin. It accepts external clock frequencies from 250kHz to 2.6MHz depending on RFOSC setting, with a 1:1 synchronization ratio. This feature enables deterministic switching alignment across multiple power stages in complex automotive systems, reducing beat-frequency noise and simplifying EMI filter design.
What is the purpose of the TERM pin on MAX20030BATMC/V+T?
The TERM pin on MAX20030BATMC/V+T serves as the ground switch for the preboost feedback divider. When the preboost controller is disabled, TERM opens to disconnect the feedback network, preventing leakage paths that could affect regulation accuracy. During preboost operation, TERM closes to complete the resistive divider between the boost output and FB3, enabling precise 1.005V feedback reference tracking.
Can MAX20030BATMC/V+T generate adjustable output voltages for its buck regulators?
Yes, MAX20030BATMC/V+T supports adjustable output voltages for both Buck1 and Buck2 via external resistor dividers connected to FB1 and FB2. In adjustable mode, the feedback node regulates to 1.0V (typ), allowing output voltage tuning from 1V to 10V. Fixed 5V (Buck1) and 3.3V (Buck2) outputs are achieved by connecting FB1/FB2 directly to the BIAS pin, simplifying design for standard rail requirements.
How does the spread-spectrum feature reduce EMI in MAX20030BATMC/V+T?
The spread-spectrum feature in MAX20030BATMC/V+T modulates the switching frequency by ±6% around the nominal value set by FOSC, distributing energy across a wider bandwidth. This reduces peak radiated emissions by >10dB compared to fixed-frequency operation - helping designs meet stringent CISPR 25 Class 5 limits without adding ferrite beads or metal shielding, especially critical in radio-sensitive infotainment and ADAS applications.
MAX20030BATMC/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:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX20030BATMC/V+T FAQ
1.How can I place an order for MAX20030BATMC/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20030BATMC/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 MAX20030BATMC/V+T reliable?
The price and inventory of MAX20030BATMC/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 MAX20030BATMC/V+T is usually 5 days.
3.What payment methods are accepted for MAX20030BATMC/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20030BATMC/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20030BATMC/V+T?
MAX20030BATMC/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20030BATMC/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 MAX20030BATMC/V+T?
For technical support, including MAX20030BATMC/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20030BATMC/V+T requirements.
6.How does Aetrix verify that MAX20030BATMC/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20030BATMC/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 MAX20030BATMC/V+T meets industry standards.
7.What is the process for return or replacement of MAX20030BATMC/V+T?
All MAX20030BATMC/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20030BATMC/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 MAX20030BATMC/V+T part is unused and in its original packaging.
Return procedure for MAX20030BATMC/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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