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Analog Devices Inc./Maxim Integrated MAX20029BATIC/V+T
- Part No.:
- MAX20029BATIC/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20029BATIC/V+T.pdf
- Description:
- IC REG BUCK ADJ 3A QUAD 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,729
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Product details
Overview
MAX20029BATIC/V+T from Analog Devices is an automotive-grade quad-output power-management IC (PMIC) integrating four synchronous step-down DC-DC converters with integrated FETs. It delivers up to 3A on Channel 1 (via combined LX1/LX2), two 1.5A channels (OUT3/OUT4), and operates from 3.0V–5.5V input with 2.2MHz fixed-frequency PWM switching. It supports factory-programmable output voltages (e.g., 1.1V, 1.8V, 1.0V), spread-spectrum EMI reduction, and operates across –40°C to +125°C for automotive point-of-load regulation.
For engineers reviewing the MAX20029BATIC/V+T datasheet, MAX20029BATIC/V+T pinout, MAX20029BATIC/V+T application, or MAX20029BATIC/V+T equivalent, key selection criteria include its triple-channel current capability (3A + 1.5A + 1.5A), TQFN-28 EP package thermal performance (θJC = 3°C/W), automotive AEC-Q100 qualification status, and factory-set voltage configuration without external resistors.
Technical Context
The MAX20029BATIC/V+T implements peak current-mode control with internal slope compensation and loop compensation, eliminating external compensation components. Its hybrid load-line architecture reduces required output capacitance while maintaining fast load-transient response (±3.5% deviation over 1A step).
It features forced-PWM operation outside the AM band, 180° phase interleaving between OUT3/OUT4 to reduce input ripple, and a SYNC input supporting 1.7MHz–2.5MHz external clock synchronization. Input overvoltage protection triggers at 5.8V (typ), and thermal shutdown activates at +185°C (typ) with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery rails after pre-regulation. |
| Switching Frequency | 2.2MHz (±10%) - enables all-ceramic capacitor designs and compact magnetics (e.g., 1.0µH for 3A channel). |
| Output Current Capability | Channel 1: 3A (LX1+LX2 combined); Channels 3 & 4: 1.5A each - enables single-chip supply for multi-rail ECUs. |
| Output Voltage Accuracy | ±3% over load, line, and temperature - meets automotive functional safety requirements for core logic rails. |
| Thermal Resistance | θJC = 3°C/W - requires exposed pad soldered to PCB ground plane for reliable 3A operation at +125°C ambient. |
| EMI Mitigation | Spread-spectrum option (+3% Δf) and 180° phase shift between OUT3/OUT4 - reduces peak radiated emissions by >10dB in 30–1000MHz band. |
| Power-Good Timing | Factory-programmed 256-cycle timeout - ensures deterministic sequencing in ASIL-B systems without external timers. |
Pinout & Package
MAX20029BATIC/V+T is housed in a 28-pin, 5mm × 5mm × 0.8mm TQFN-EP package with exposed thermal pad (EP = GND). The package complies with JEDEC MO-220, RoHS-compliant, and supports reflow per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 | Active-high enable for Channel 1 | Drives high to activate 3A buck; tied low disables entire channel - used for cold-start sequencing. |
| LX1, LX2 | Switching nodes for Channel 1 | Internally paralleled for 3A operation; must be shorted externally per layout guidelines. |
| OUTS3, OUTS4 | Voltage sense inputs for Channels 3 & 4 | Connect directly to respective output capacitors - enables accurate regulation without feedback resistor networks. |
| PG1, PG3, PG4 | Open-drain power-good outputs | Assert low during undervoltage/overvoltage faults (±6%/±10% thresholds); require 10kΩ pull-up to VA. |
| SYNC | External clock synchronization input | Accepts 1.7–2.5MHz CMOS clock; connect to PGND_ to use internal 2.2MHz oscillator. |
| EP | Exposed thermal pad | Must be soldered to solid GND plane with ≥6 thermal vias - primary heat path; not electrically isolated. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-current channel architecture | Combines LX1/LX2 into single 3A output while retaining independent 1.5A channels - eliminates need for discrete high-current buck stage. |
| Factory-programmed output voltages | Fixed 1.1V, 1.8V, and 1.0V on OUT1/OUT3/OUT4 - removes 0.1% feedback resistors and associated layout sensitivity. |
| Hybrid load-line control | Reduces required output capacitance by ~30% vs. conventional voltage-mode control - lowers BOM cost and board area. |
| Integrated current-limit protection | Per-channel cycle-by-cycle limiting with programmable thresholds (1.85A–2.75A range) - prevents MOSFET failure during sustained overload. |
| Automotive-grade thermal management | Thermal shutdown at +185°C with 15°C hysteresis and junction-to-case resistance of 3°C/W - supports under-hood deployment without derating. |
Applications
| ADAS Domain Controller Power | Infotainment SoC Core Supply |
|---|---|
Use Scenario: Powers vision processor, radar MCU, and CAN transceivers in front-camera ECU with strict EMI limits. IC Role / Device Role / Timing Role: Quad-output PMIC delivering 1.1V (core), 1.8V (I/O), 1.0V (memory), and 3.3V (peripherals) from 5V pre-regulator. Use Value: 180° phase shift between OUT3/OUT4 cuts input ripple by 70%, meeting CISPR-25 Class 5 radiated emissions limits without shielding. | Use Scenario: Supplies multi-core application processor (e.g., NXP i.MX8) requiring tightly sequenced 1.0V, 1.1V, and 1.8V rails. IC Role / Device Role / Timing Role: Single-chip solution providing three independent, soft-started, power-good-monitored rails with factory-set accuracy. Use Value: 256-cycle PG timeout and individual EN pins enable precise boot-order control compliant with Android Automotive boot requirements. |
| Body Control Module (BCM) | Automotive Gateway ECU |
Use Scenario: Powers microcontroller, LIN transceivers, and sensor interfaces in door module with space-constrained layout. IC Role / Device Role / Timing Role: Delivers 3.3V (MCU), 1.8V (sensor interface), and 1.0V (digital logic) from 12V battery via 5V intermediate rail. Use Value: All-ceramic design enabled by 2.2MHz switching reduces solution size by 40% vs. 500kHz alternatives - fits 12mm × 12mm PCB area. | Use Scenario: Supplies Ethernet PHY, CAN FD controllers, and secure element in vehicle gateway with high reliability demands. IC Role / Device Role / Timing Role: Provides 1.1V (PHY core), 1.8V (CAN FD I/O), and 3.3V (secure element) with independent fault reporting via PG1/PG3/PG4. Use Value: ±3% output accuracy over –40°C to +125°C ensures stable operation during thermal cycling - validated per AEC-Q100 Grade 0. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-output automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20029BATID/V+ | Same package and pinout; factory-set outputs: 1.0V, 1.8V, 1.2V, 3.3V - differs in Channel 4 voltage and PG timeout (256 cycles vs. same). | Targets infotainment audio subsystems requiring 3.3V analog supply instead of 1.0V memory rail. | Select when 3.3V peripheral rail is prioritized over 1.0V DDR interface voltage. |
| TPS65321A-Q1 | Triple-output (not quad); max 2.5A per channel; no spread-spectrum; 2.1MHz switching; different pinout and enable logic (active-low). | Suitable for simpler body electronics where fourth rail is unnecessary and EMI margin is less constrained. | Choose only if system requires exactly three regulated rails and can accept non-drop-in layout changes. |
Compared with MAX20029BATID/V+, MAX20029BATIC/V+T provides tighter alignment with memory-interface voltage requirements (1.0V vs. 3.3V on OUT4), while TPS65321A-Q1 lacks the fourth channel and EMI-reduction features critical for ADAS domain controllers.
Availability
MAX20029BATIC/V+T is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, infotainment SoC power delivery, body control modules, gateway ECUs, and industrial HMI panels requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX20029BATIC/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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20029 family is part of Analog Devices' automotive power-management portfolio, designed specifically for AEC-Q100 qualified, low-EMI, multi-rail power delivery in next-generation vehicle ECUs and domain controllers.
FAQ
What output voltage configuration does MAX20029BATIC/V+T implement?
MAX20029BATIC/V+T is factory-programmed with output voltages of 1.1V on OUT1, 1.8V on OUT3, and 1.0V on OUT4. OUT2 is disabled per the Selector Guide, and Channel 1 operates in combined 3A mode using LX1 and LX2. No external feedback resistors are required, ensuring ±3% accuracy across temperature and load.
Does MAX20029BATIC/V+T support external clock synchronization?
Yes, MAX20029BATIC/V+T supports external clock synchronization via its SYNC pin, which accepts CMOS-level signals from 1.7MHz to 2.5MHz. When not used, SYNC must be connected to PGND_ to retain the internal 2.2MHz oscillator. This feature allows system-level timing alignment across multiple PMICs or with SoC clocks.
How is thermal performance managed in MAX20029BATIC/V+T?
MAX20029BATIC/V+T uses a 28-pin TQFN-EP package with θJC = 3°C/W. Reliable thermal management requires soldering the exposed pad (EP) to a solid GND plane with ≥6 thermal vias and connecting it to internal GND layers. At full 3A load and +125°C ambient, this layout maintains junction temperature below +150°C.
What protection features are integrated into MAX20029BATIC/V+T?
MAX20029BATIC/V+T integrates input overvoltage protection (trip at 5.8V), input undervoltage lockout (2.77V falling), cycle-by-cycle current limiting per channel, open-drain power-good monitoring with ±6% UV/±10% OV thresholds, and thermal shutdown at +185°C with 15°C hysteresis - all essential for automotive ASIL-B compliance.
Can MAX20029BATIC/V+T drive ceramic output capacitors exclusively?
Yes, MAX20029BATIC/V+T is optimized for all-ceramic output capacitor designs. For VOUT/VIN > 0.2, minimum recommended capacitance is 20µF/VOUT (e.g., 33µF for 1.1V rail). Its peak current-mode control and internal compensation ensure stability with low-ESR ceramics, eliminating need for tantalum or electrolytic bulk capacitors.
MAX20029BATIC/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 4
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 4V
- Current - Output:
- 3A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TQFN (5x5)
MAX20029BATIC/V+T FAQ
1.How can I place an order for MAX20029BATIC/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20029BATIC/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 MAX20029BATIC/V+T reliable?
The price and inventory of MAX20029BATIC/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 MAX20029BATIC/V+T is usually 5 days.
3.What payment methods are accepted for MAX20029BATIC/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20029BATIC/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20029BATIC/V+T?
MAX20029BATIC/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20029BATIC/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 MAX20029BATIC/V+T?
For technical support, including MAX20029BATIC/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20029BATIC/V+T requirements.
6.How does Aetrix verify that MAX20029BATIC/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20029BATIC/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 MAX20029BATIC/V+T meets industry standards.
7.What is the process for return or replacement of MAX20029BATIC/V+T?
All MAX20029BATIC/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20029BATIC/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 MAX20029BATIC/V+T part is unused and in its original packaging.
Return procedure for MAX20029BATIC/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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