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Analog Devices Inc./Maxim Integrated MAX20030BATMC/V+
- Part No.:
- MAX20030BATMC/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX20030BATMC/V+.pdf
- Description:
- IC REG LDO BUCK SMD
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Product details
Overview
MAX20030BATMC/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 management in harsh vehicle environments. It delivers regulated 5V and 3.3V outputs (±1% feedback accuracy), operates from 2V–42V input (including cold-crank down to 2V), supports 2.2MHz switching, and achieves 17µA quiescent current with 3.3V buck enabled - enabling always-on, low-power instrument cluster and head-unit applications.
For engineers reviewing the MAX20030BATMC/V+ datasheet, MAX20030BATMC/V+ pinout, MAX20030BATMC/V+ application, or MAX20030BATMC/V+ equivalent, key selection considerations include its 48-pin TQFN package with exposed pad, resistor-programmable 220kHz–2.2MHz frequency, spread-spectrum EMI reduction, 180° out-of-phase dual-buck operation, and crank-ready preboost functionality for automotive stop-start systems.
Technical Context
The MAX20030BATMC/V+ 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 controller activated below 3.5V input to sustain VOUT1/VOUT2 regulation. Its preboost architecture uses CS3P/CS3N sensing, TERM-switched feedback, and DH3/DL3 gate drivers with 40ns minimum on-time to support >10A peak boost current during cold-crank.
Control logic includes three selectable operating modes via FSYNC: forced PWM (fixed-frequency), skip mode (ultra-low IQ), and external clock synchronization. The IC integrates a 5V BIAS LDO, programmable 1.5V–10V HV LDO (OUT4), and comprehensive protection including cycle-by-cycle current limit, thermal shutdown at 170°C, and ±3% output overvoltage detection with hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2V–42V (preboost enables regulation at 2V battery; supports full automotive cold-crank and load-dump conditions) |
| Switching Frequency | 220kHz–2.2MHz (resistor-programmable via FOSC; 2.2MHz enables compact 2.2µH inductors and avoids AM band interference) |
| Quiescent Current | 17µA (with 3.3V buck enabled; ensures <100µA system standby power for ASIL-B-compliant always-on modules) |
| Output Accuracy | ±1% (VFB1/VFB2 = 1.00V ±1%; guarantees stable 5.0V ±25mV and 3.3V ±33mV under line/load/temperature variation) |
| Thermal Performance | θJA = 23.3°C/W (on 4-layer board); junction-to-case θJC = 1°C/W enables >2.9W continuous dissipation at +70°C ambient) |
| Protection Features | Cycle-by-cycle current limit, thermal shutdown (170°C), UVLO (BIAS at 2.35V fall), OVLO (109% nominal), PGOOD with 3% hysteresis |
| Operating Temperature | −40°C to +125°C (AEC-Q100 qualified; junction rated to +150°C for under-hood placement) |
Pinout & Package
MAX20030BATMC/V+ is housed in a thermally enhanced 7mm × 7mm, 48-pin TQFN package with exposed pad (EP = GND). The package supports high-current routing via separate PGND1/PGND2/PGND3/PGND4 pins and features optimized thermal path through the EP to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DL1, DL2, DL3 | Low-side gate-driver outputs | Drive n-channel MOSFET sources; swing from respective PGND to BIAS (5V) - enables efficient synchronous rectification |
| DH1, DH2, DH3 | High-side gate-driver outputs | Drive n-channel MOSFET gates; swing from LX_ to BST_ (up to 6V) - supports bootstrap-based high-side drive without external charge pump |
| FB1, FB2, FB3, FB4 | Feedback inputs | Regulate 5V (FB1), 3.3V (FB2), boost output (FB3), and LDO (FB4); all reference 1.00V ±1% internal bandgap - enables precise output setting with resistor dividers |
| EN1, EN2, EN3, EN4 | Independent enable inputs | Active-high digital controls for Buck1, Buck2, Boost, and HV LDO - allows flexible power sequencing and fault isolation |
| PGOOD1, PGOOD2 | Open-drain power-good indicators | Assert low during soft-start, undervoltage, or fault; 95% rising threshold with 3% hysteresis - provides reliable system reset signaling |
| SPS, FSYNC, FOSC | EMI & frequency control | SPS enables ±6% spread spectrum; FSYNC accepts 250kHz–2.6MHz external clock; FOSC sets frequency via resistor - gives full EMI/noise optimization control |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous preboost controller | Enables regulation down to 2V input by supplying boosted voltage to buck controllers - eliminates need for external boost stage in cold-crank designs |
| 180° out-of-phase dual buck | Reduces input ripple current by ~70% vs. in-phase operation - allows smaller input bulk capacitors and lower EMI filter cost |
| 50ns minimum on-time (buck) | Supports 3.3V output directly from 12V battery at 2.2MHz without pulse-skipping - ensures clean transient response in navigation head units |
| Thermally optimized 48-pin TQFN | Exposed pad + dedicated PGND pins reduce thermal resistance to 23.3°C/W - sustains 2.96W dissipation at +70°C ambient for high-power clusters |
| Automotive-grade protection suite | Includes BIAS UVLO, thermal shutdown with 20°C hysteresis, and cycle-by-cycle current limiting - meets ISO 7637-2 pulse immunity requirements |
| Programmable HV LDO (OUT4) | Delivers 5V or 3.3V (factory-set) at 200mA with 500mV dropout at 200mA - powers CAN transceivers or microcontrollers independently of buck rails |
Applications
| Instrument Cluster Power Supply | Navigation Head Unit Front-End |
|---|---|
|
Use Scenario: Powering TFT display, MCU, and CAN interface in digital instrument clusters requiring always-on capability and cold-crank survival. IC Role / Device Role / Timing Role: Primary front-end PMIC delivering 5V (MCU core), 3.3V (peripherals), and 5V/3.3V LDO (CAN PHY) with preboost active below 6V. Use Value: 17µA IQ extends battery life during vehicle sleep; 2V start-up ensures cluster remains functional during engine cranking. |
Use Scenario: Providing clean, sequenced power to multi-core application processor, GPS module, and audio codec in infotainment head units. IC Role / Device Role / Timing Role: Dual-buck controller generating 5V/3.3V rails with 180° phase shift; LDO supplies noise-sensitive analog blocks. Use Value: 2.2MHz switching minimizes EMI near FM radio band; spread-spectrum reduces peak emissions by 10dB. |
| Distributed DC Power System | Engine Control Module Auxiliary Rail |
|
Use Scenario: Centralized power generation for multiple ECUs in zonal architecture, where one MAX20030BATMC/V+ feeds downstream point-of-load converters. IC Role / Device Role / Timing Role: High-efficiency front-end regulator converting 12V battery to stable 5V/3.3V distribution bus with PGOOD monitoring. Use Value: 97% max duty cycle supports wide VIN range; thermal shutdown prevents failure during prolonged high-temp engine bay operation. |
Use Scenario: Generating auxiliary 3.3V rail for sensor signal conditioning and communication interfaces in engine control modules exposed to extreme temperature cycling. IC Role / Device Role / Timing Role: Robust buck controller with -40°C to +125°C rating, BIAS LDO powering internal analog circuits, and EN3-controlled preboost for start-stop transitions. Use Value: 1.00V ±1% feedback reference ensures <±33mV output tolerance across full temp range - critical for ADC reference stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-buck-with-preboost applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20031BATMC/V+ | Same pinout and electrical specs; differs only in EN3 logic polarity (active-low vs. MAX20030's active-high) and CDM ESD rating (500V vs. 425V all pins) | Requires revised EN3 pull-up/pull-down network; identical thermal and power delivery performance in instrument cluster use cases | Select MAX20031BATMC/V+ only if hardware-level EN3 inversion is preferred for fail-safe boost enable during brownout |
| TPS65321A-Q1 | Single 2.2MHz buck + integrated LDO (no preboost); 36V max input; 25µA IQ (vs. 17µA); 40-pin HTSSOP vs. 48-pin TQFN | Lacks cold-crank capability below 3.5V; suitable for non-critical body electronics but not for crank-ready clusters or head units | Choose only when preboost is unnecessary and PCB space permits larger HTSSOP footprint; verify cold-crank compliance separately |
Compared with MAX20031BATMC/V+, the MAX20030BATMC/V+ offers simpler EN3 interface for boost activation; versus TPS65321A-Q1, it delivers essential 2V cold-crank support and superior thermal performance in compact TQFN packaging - making it the sole choice for ASIL-B front-end power in safety-critical displays.
Availability
MAX20030BATMC/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 MAX20030BATMC/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 leader specializing in high-reliability analog and mixed-signal 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 into a single AEC-Q100-qualified device to replace discrete power solutions in instrument clusters and infotainment systems.
FAQ
What is the cold-crank input voltage limit supported by MAX20030BATMC/V+?
The MAX20030BATMC/V+ maintains regulation of both buck outputs down to 2V input thanks to its integrated synchronous preboost controller. This capability is explicitly validated in the datasheet under "With preboost enabled" conditions and enables reliable operation during automotive cranking events where battery voltage dips below 6V - a critical requirement for instrument clusters and head units that must remain functional during engine start.
Does MAX20030BATMC/V+ support external frequency synchronization?
Yes, MAX20030BATMC/V+ supports external clock synchronization via the FSYNC pin, accepting input frequencies from 250kHz to 2.6MHz depending on RFOSC setting. When synchronized, the internal switching frequency locks to the external clock with 1:1 ratio, enabling deterministic EMI reduction and elimination of beat frequencies in multi-rail systems - a key feature for meeting CISPR 25 Class 5 radiated emissions limits in automotive modules.
How does the spread-spectrum function work on MAX20030BATMC/V+?
The SPS pin on MAX20030BATMC/V+ enables ±6% frequency modulation of the switching clock when pulled high, reducing peak EMI by spreading energy across a wider bandwidth. This feature is implemented entirely within the IC's oscillator circuitry and requires no external components - providing certified EMI reduction without compromising efficiency or thermal performance, unlike external dithering methods.
What is the maximum continuous output current capability of the HV LDO (OUT4) in MAX20030BATMC/V+?
The HV LDO in MAX20030BATMC/V+ delivers up to 200mA continuously, with current-limit threshold specified at 210mA (min) and 400mA (max). Its 500mV dropout voltage at 200mA ensures stable 5V output even when input drops to 5.5V - making it suitable for powering CAN transceivers, sensor interfaces, or low-power MCUs without requiring additional regulators.
Can MAX20030BATMC/V+ operate without the BIAS capacitor?
No, MAX20030BATMC/V+ requires a minimum 6.8µF low-ESR ceramic capacitor between BIAS and AGND per the datasheet. Omitting this capacitor causes instability in the internal 5V LDO, leading to erratic gate-drive behavior, premature thermal shutdown, and failure to regulate outputs - as confirmed by layout guidelines and absolute maximum ratings specifying BIAS bypassing as mandatory for functional operation.
MAX20030BATMC/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Strip
- 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+ FAQ
1.How can I place an order for MAX20030BATMC/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20030BATMC/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 MAX20030BATMC/V+ reliable?
The price and inventory of MAX20030BATMC/V+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20030BATMC/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20030BATMC/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20030BATMC/V+?
MAX20030BATMC/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20030BATMC/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 MAX20030BATMC/V+?
For technical support, including MAX20030BATMC/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20030BATMC/V+ requirements.
6.How does Aetrix verify that MAX20030BATMC/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20030BATMC/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 MAX20030BATMC/V+ meets industry standards.
7.What is the process for return or replacement of MAX20030BATMC/V+?
All MAX20030BATMC/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20030BATMC/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 MAX20030BATMC/V+ part is unused and in its original packaging.
Return procedure for MAX20030BATMC/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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