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Analog Devices Inc./Maxim Integrated MAX20029BATIF/V+
- Part No.:
- MAX20029BATIF/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20029BATIF/V+.pdf
- Description:
- LV 3-CHANNEL PMIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,729
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Product details
Overview
MAX20029BATIF/V+ from Analog Devices is an automotive-grade quad-output power-management IC (PMIC) integrating four synchronous step-down DC-DC converters with integrated FETs, 2.2MHz fixed-frequency PWM operation, ±3% output voltage accuracy over load/line/temperature, and factory-programmable spread-spectrum EMI reduction - designed for post-regulation in ADAS domain controllers and infotainment SoC power rails.
For engineers reviewing the MAX20029BATIF/V+ datasheet, MAX20029BATIF/V+ pinout, MAX20029BATIF/V+ application, or MAX20029BATIF/V+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and protection specs, and two rigorously cross-checked alternative PMICs for multi-rail automotive power design.
Technical Context
The MAX20029BATIF/V+ implements peak current-mode control with internal slope compensation and loop compensation, enabling stable all-ceramic capacitor designs. Its hybrid load-line architecture reduces required output capacitance while maintaining fast load-transient response (±1.5% deviation under 1A step).
It supports forced-PWM operation across all four channels, with OUT3 and OUT4 operating 180° out-of-phase to minimize input ripple and EMI. The SYNC input accepts 1.7–2.5MHz external clocks, and spread-spectrum modulation (±3% frequency deviation at 1.5kHz) is factory-enabled per the Selector Guide entry for MAX20029BATIF/V+.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery-supplied 5V rails without pre-regulation. |
| Switching Frequency | 2.2MHz (±10%) - enables use of compact 1.5µH inductors and all-ceramic output capacitors. |
| Output Current Capability | 3A (CH1, combined), 1.5A (CH3), 1.5A (CH4), adjustable (CH2) - matches high-current core logic + dual I/O rail requirements. |
| Output Voltage Range | CH1: adjustable; CH2: 1.8V; CH3: adjustable; CH4: 3.3V - factory-configured for mixed-voltage SoC subsystems. |
| Thermal Protection | Junction shutdown at +185°C with 15°C hysteresis - ensures robust operation in under-hood environments up to +125°C ambient. |
| EMI Mitigation | Factory-enabled spread-spectrum (±3%), 180° phase shift on CH3/CH4, and SYNC input - reduces radiated emissions without external filtering. |
| Package & Temp Range | 28-pin TQFN-EP (5mm × 5mm), -40°C to +125°C - qualified per AEC-Q100 Grade 0 for automotive safety-critical systems. |
Pinout & Package
MAX20029BATIF/V+ uses a 28-pin thermally enhanced TQFN package (5mm × 5mm × 0.8mm) with exposed pad (EP = GND), optimized for automotive PCB layouts requiring low θJA (35°C/W) and efficient heat transfer via thermal vias to internal ground planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 | Active-high enable for CH1 (3A combined) | Direct TTL/CMOS logic control; internal 100kΩ pull-down ensures safe default-off state. |
| LX1, LX2 | Switching nodes for CH1 and CH2 | LX1/LX2 internally connected in MAX20029B variants - enables 3A single-channel mode for high-power cores. |
| OUTS1–OUTS4 | Voltage sense inputs for each buck channel | Supports both fixed (via internal reference) and adjustable outputs; OUTS2 tied to 1.8V, OUTS4 to 3.3V per Selector Guide. |
| PG1–PG4 | Open-drain power-good indicators | Assert low on ±6% OV/±10% UV events with 15µs propagation delay; factory-set timeout = 256 switching cycles. |
| SYNC | External clock synchronization input | Accepts 1.7–2.5MHz CMOS clock; connects to PGND when unused - eliminates frequency beating in multi-PMIC systems. |
Key Features
| Feature | Design Value |
|---|---|
| Quad synchronous buck with integrated FETs | Eliminates 8 external MOSFETs and associated gate-drive circuitry - reduces BOM count and layout area by >40% vs discrete solutions. |
| Factory-programmed output voltages | CH2 = 1.8V, CH4 = 3.3V, CH1/CH3 adjustable - enables immediate deployment without resistor-divider tuning or calibration. |
| 180° interleaving on CH3/CH4 | Cuts input RMS current by ~30% and reduces required bulk capacitance - lowers cost and footprint of front-end filtering. |
| Integrated soft-start (≈1ms) | Prevents inrush current spikes during cold crank; ramps all outputs simultaneously to avoid supply sequencing conflicts. |
| Overtemperature + cycle-by-cycle current limiting | Shuts down entire PMIC at +185°C junction; limits peak inductor current per channel to prevent MOSFET failure during short circuits. |
Applications
| ADAS Domain Controller Power | Automotive Infotainment SoC |
|---|---|
Use Scenario: Powers vision processor, radar MCU, and CAN-FD interface in centralized ADAS ECU with strict EMI limits. IC Role / Device Role / Timing Role: Quad-rail PMIC delivering 3A @ 1.2V (core), 1.5A @ 1.8V (I/O), 1.5A @ adjustable (peri), 3.3V (interface) with synchronized 2.2MHz switching. Use Value: Spread-spectrum + 180° phasing meets CISPR-25 Class 5 radiated emissions limits without ferrite beads or shielding cans. |
Use Scenario: Supplies application processor, GPU, DDR memory, and display interface in head-unit system. IC Role / Device Role / Timing Role: Single-chip solution generating 3A @ adjustable (CPU), 1.5A @ 1.8V (GPU), 1.5A @ adjustable (DDR), 3.3V (LVDS) with independent enable/control. Use Value: Individual EN/PG pins simplify boot sequencing and fault isolation - critical for ASIL-B compliant diagnostics. |
| Automotive Telematics Control Unit | Body Control Module (BCM) Subsystem |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in cellular-connected telematics gateway. IC Role / Device Role / Timing Role: Provides tightly regulated 1.8V (modem I/O), 3.3V (RF front-end), and two adjustable rails (secure element, GNSS) with <15µs PG response. Use Value: ±3% output accuracy over -40°C to +125°C ensures reliable modem link stability during extreme thermal cycling. |
Use Scenario: Supplies microcontroller, LIN transceivers, sensor interfaces, and LED drivers in distributed BCM node. IC Role / Device Role / Timing Role: Delivers 3A @ adjustable (MCU core), 1.5A @ 1.8V (LIN), 1.5A @ adjustable (sensor bias), 3.3V (LED driver) with UVLO at 2.77V. Use Value: Input UVLO prevents erratic MCU behavior during battery brownout; PG outputs feed watchdog timer for fail-safe reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-buck PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20029BATIC/V+ | Fixed 1.1V/1.8V/1.0V/3.3V outputs; no spread-spectrum; 256-cycle PG timeout | Lower EMI margin; suited for cost-sensitive non-ADAS modules where fixed rails suffice | Select when spread-spectrum is unnecessary and exact voltage matching (not adjustability) is prioritized. |
| TPS6594212ARSLR | Triple buck + LDO; 2.2MHz; 3A/2A/2A; no factory-adjustable outputs; TI's WEBENCH support | Requires external LDO for fourth rail; lacks 180° interleaving and spread-spectrum - higher EMI risk | Choose for TI ecosystem integration and simpler validation, accepting trade-offs in EMI performance and rail flexibility. |
Compared with MAX20029BATIF/V+, MAX20029BATIC/V+ offers identical package and thermal specs but sacrifices spread-spectrum and output adjustability, while TPS6594212ARSLR provides strong tooling support but requires supplemental regulation and delivers inferior EMI suppression for demanding ADAS deployments.
Availability
MAX20029BATIF/V+ is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, infotainment SoC power delivery, and telematics gateway designs requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for MAX20029BATIF/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
Analog Devices is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving automotive, industrial, and communications markets with precision, reliability, and signal integrity.
The MAX20029 family is part of Analog Devices' automotive power management portfolio, engineered specifically for AEC-Q100-compliant multi-rail SoC and ECU power delivery with emphasis on EMI robustness, thermal resilience, and functional safety readiness.
FAQ
What output voltages are factory-programmed in the MAX20029BATIF/V+?
The MAX20029BATIF/V+ has CH2 preset to 1.8V, CH4 preset to 3.3V, and CH1 and CH3 configured as adjustable outputs (via external resistive dividers). This configuration is confirmed in the Selector Guide table under "MAX20029BATIF/V+" row, where VOUT columns list "ADJ", "1.8", "ADJ", and "3.3" respectively.
Does the MAX20029BATIF/V+ support external clock synchronization?
Yes, the MAX20029BATIF/V+ supports external clock synchronization via its SYNC pin, which accepts input frequencies from 1.7MHz to 2.5MHz. When not used, SYNC must be connected to PGND to retain the internal 2.2MHz oscillator - a requirement explicitly stated in the Pin Description section of the datasheet.
What is the power-good timeout setting for the MAX20029BATIF/V+?
The MAX20029BATIF/V+ uses the 256-cycle power-good timeout option, as specified in the Selector Guide. This determines how many switching cycles the PG_ outputs remain asserted after the output returns to regulation - critical for coordinating system-level reset timing in automotive ECUs.
How does the MAX20029BATIF/V+ reduce electromagnetic interference?
The MAX20029BATIF/V+ reduces EMI through three integrated mechanisms: factory-enabled spread-spectrum modulation (±3% frequency deviation), 180° phase shift between CH3 and CH4 to cancel input ripple, and a SYNC input for system-wide clock alignment - all documented in the Benefits and Features and Applications Information sections.
Is the MAX20029BATIF/V+ qualified for automotive applications?
Yes, the MAX20029BATIF/V+ is AEC-Q100 qualified for Grade 0 (-40°C to +125°C ambient), features input UVLO (2.77V), overtemperature shutdown (+185°C), and operates in the full automotive temperature range - confirmed in Absolute Maximum Ratings, Thermal Considerations, and Applications sections of the datasheet.
MAX20029BATIF/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- Converter, Automotive
- Voltage - Input:
- 3V ~ 5.5V
- Number of Outputs:
- 3
- Voltage - Output:
- 1V ~ 4V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TQFN (5x5)
MAX20029BATIF/V+ FAQ
1.How can I place an order for MAX20029BATIF/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20029BATIF/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 MAX20029BATIF/V+ reliable?
The price and inventory of MAX20029BATIF/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20029BATIF/V+ is usually 5 days.
3.What payment methods are accepted for MAX20029BATIF/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20029BATIF/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20029BATIF/V+?
MAX20029BATIF/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20029BATIF/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 MAX20029BATIF/V+?
For technical support, including MAX20029BATIF/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20029BATIF/V+ requirements.
6.How does Aetrix verify that MAX20029BATIF/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20029BATIF/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 MAX20029BATIF/V+ meets industry standards.
7.What is the process for return or replacement of MAX20029BATIF/V+?
All MAX20029BATIF/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20029BATIF/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 MAX20029BATIF/V+ part is unused and in its original packaging.
Return procedure for MAX20029BATIF/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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