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Analog Devices Inc./Maxim Integrated MAX20029CATIA/V+T
- Part No.:
- MAX20029CATIA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20029CATIA/V+T.pdf
- Description:
- IC REG BUCK ADJ 1.5A QUAD 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,386
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Product details
Overview
MAX20029CATIA/V+T from Analog Devices is an automotive-grade quad-output step-down PMIC integrating four synchronous buck converters with factory-programmed output voltages (1.8V, 1.35V, 3.3V, 1.2V), 2.2MHz fixed-frequency PWM operation, ±3% output accuracy over load/line/temperature, and 0.7V–4.0V output range. It delivers up to 1.5A per channel and operates from 3.0V–5.5V input, targeting ADAS domain controllers and infotainment power rails.
For engineers reviewing the MAX20029CATIA/V+T datasheet, MAX20029CATIA/V+T pinout, MAX20029CATIA/V+T application, or MAX20029CATIA/V+T equivalent, key selection criteria include its 28-pin TQFN-EP package, -40°C to +125°C automotive qualification, individual enable/PG outputs, spread-spectrum EMI reduction, and factory-set voltage configuration eliminating external feedback resistors.
Technical Context
The MAX20029CATIA/V+T implements peak current-mode control with internal slope compensation and loop compensation, enabling stable regulation without external compensation components. Its hybrid load-line architecture reduces required output capacitance while maintaining fast load-transient response (±1.5% deviation under 1A step).
Two of its four buck channels (OUT3 and OUT4) operate 180° out-of-phase to minimize input ripple and reduce effective input capacitance requirements; all channels maintain forced-PWM operation outside the AM band and support external synchronization via the SYNC pin (1.7–2.5MHz range).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery rail with transient tolerance. |
| Switching Frequency | 2.2MHz ±10% - enables use of small 1.5µH inductors and all-ceramic output capacitors. |
| Output Voltage Setpoints | 1.8V, 1.35V, 3.3V, 1.2V - factory-trimmed for ±3% accuracy; no external resistor divider needed. |
| Max Output Current | 1.5A per channel - sufficient for powering multiple SoC I/O rails or MCU cores in automotive ECUs. |
| Operating Temperature | -40°C to +125°C - qualified per AEC-Q100 Grade 0, suitable for under-hood and cockpit applications. |
| EMI Reduction Features | Spread-spectrum option (+3% Δf) and 180° phase interleaving on OUT3/OUT4 - lowers peak radiated emissions. |
| Protection Functions | Input overvoltage lockout (5.8V), undervoltage lockout (2.77V), cycle-by-cycle current limiting, thermal shutdown at +185°C - ensures robust fault handling in harsh environments. |
Pinout & Package
MAX20029CATIA/V+T is housed in a 28-pin 5mm × 5mm × 0.8mm TQFN-EP package with exposed thermal pad (EP = GND). The package supports high-power dissipation (θJA = 35°C/W, θJC = 3°C/W) and requires soldering the EP to a large PCB ground plane via thermal vias for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4 | Active-high digital enable inputs | Independent control of each buck converter; allows precise power sequencing in multi-rail systems. |
| PG1–PG4 | Open-drain power-good outputs | Assert low if output deviates >6% below or >10% above nominal; factory-programmable timeout (256 cycles). |
| LX1–LX4 | Switching node terminals | Connect to external inductors; LX3/LX4 are independent; LX1/LX2 may be paralleled only in MAX20029B/D variants. |
| OUTS1–OUTS4 | Voltage sense inputs | Connected directly to output capacitors; enable accurate regulation without external resistive dividers for factory-set versions. |
| PV1–PV4 | Power input pins per channel | Each requires ≥2.2µF ceramic bypass capacitor placed adjacent to pin; decouples high-frequency switching noise. |
| PGND1–PGND4 | Power ground returns per channel | Separate low-impedance return paths prevent cross-talk between buck stages and improve EMI performance. |
| SYNC | External clock synchronization input | Accepts 1.7–2.5MHz clock; disables internal oscillator when driven; essential for system-level timing coordination. |
| VA | Analog supply reference | Bias source for internal references and comparators; must be decoupled with ≥1µF ceramic capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Quad synchronous buck architecture | Four integrated high-efficiency converters (pMOS/nMOS RDS(ON): 125mΩ/100mΩ @ 5V) eliminate discrete FETs and reduce board area by >40% vs. discrete solutions. |
| Factory-programmed output voltages | Fixed 1.8V, 1.35V, 3.3V, 1.2V setpoints achieve ±3% accuracy across -40°C to +125°C without 0.1% resistors or layout-sensitive feedback networks. |
| 180° phase interleaving (OUT3/OUT4) | Reduces RMS input ripple current by ~30%, allowing smaller input bulk capacitance and easing EMI filter design. |
| Forced-PWM operation outside AM band | Ensures constant switching frequency during light-load conditions, eliminating audible noise and improving EMC predictability. |
| Individual soft-start and PG timing | Configurable 256-cycle power-good timeout and controlled ramp-up prevent inrush current damage to downstream loads like FPGAs or DDR memory. |
Applications
| ADAS Domain Controller Power | Automotive Infotainment SoC Rails |
|---|---|
Use Scenario: Powering multiple voltage domains (core, I/O, memory, PHY) of a centralized ADAS processor under wide temperature and load transients. IC Role / Device Role / Timing Role: Primary quad-rail PMIC delivering tightly regulated 1.2V (core), 1.8V (I/O), 3.3V (interface), and 1.35V (memory) with synchronized enable sequencing. Use Value: Eliminates need for four discrete DC-DCs; factory-set voltages guarantee accuracy without calibration; 2.2MHz operation minimizes inductor size for compact module integration. |
Use Scenario: Supplying power to multimedia SoCs (e.g., NXP i.MX8, Qualcomm SA8155) requiring independent, sequenced rails with low noise and high efficiency. IC Role / Device Role / Timing Role: Centralized power management unit providing 1.8V (GPU), 3.3V (USB/PCIe), 1.2V (CPU), and 1.35V (LPDDR4) with individual EN/PG control. Use Value: Phase-interleaved OUT3/OUT4 reduces input ripple, lowering EMI filtering cost; spread-spectrum mode meets CISPR-25 Class 5 radiated emissions limits. |
| Body Control Module (BCM) | Automotive Camera Module |
Use Scenario: Consolidating power delivery for microcontrollers, CAN transceivers, LIN interfaces, and sensor interfaces in a space-constrained BCM. IC Role / Device Role / Timing Role: Single-chip solution replacing multiple LDOs and buck converters; provides 3.3V (MCU core), 1.8V (CAN PHY), 1.2V (sensor interface), and 1.35V (LIN transceiver). Use Value: AEC-Q100 Grade 0 qualification ensures reliability at +125°C ambient; UVLO/OV protection prevents brownout-induced resets during cold cranking or load dump. |
Use Scenario: Powering image signal processors (ISPs), CMOS sensors, and SerDes links in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Quad-buck regulator supplying 1.2V (ISP core), 1.8V (sensor analog), 3.3V (SerDes), and 1.35V (MIPI PHY) with tight transient response. Use Value: Hybrid load-line architecture improves load-step response (±1.5% deviation); forced-PWM avoids frequency shifting that could interfere with image capture timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-buck PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20029ATIA/V+ | Same 28-pin TQFN package and 2.2MHz operation, but with adjustable outputs (1V–4V) instead of factory-set voltages; lacks spread-spectrum option. | Suitable where flexible voltage tuning is required post-design; not drop-in for fixed-voltage designs due to different feedback topology. | Select MAX20029ATIA/V+ only if voltage reconfiguration during prototyping or production variants is needed; MAX20029CATIA/V+T offers lower BOM count and guaranteed accuracy. |
| TPS6594212ARSLR | 6-channel PMIC with integrated LDOs and I²C programmability; higher pin count (48-pin VQFN); 2.1MHz switching frequency; supports dynamic voltage scaling. | Targets complex SoC platforms needing runtime voltage adjustment; adds communication overhead and layout complexity versus standalone quad-buck. | Choose TPS6594212ARSLR when I²C-controlled sequencing, margining, or additional LDOs are required; MAX20029CATIA/V+T excels in cost-optimized, fixed-rail automotive modules. |
Compared with MAX20029ATIA/V+ and TPS6594212ARSLR, MAX20029CATIA/V+T delivers optimized simplicity for fixed-voltage automotive applications-reducing component count, eliminating calibration, and minimizing EMI through phase interleaving and spread-spectrum, without sacrificing AEC-Q100 compliance or thermal robustness.
Availability
MAX20029CATIA/V+T is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, infotainment SoC power rails, and body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX20029CATIA/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 with precision power, sensing, and signal chain solutions.
The MAX20029 family is part of Analog Devices' automotive power management portfolio, designed specifically for demanding point-of-load regulation in ADAS, infotainment, and chassis systems where reliability, EMI control, and AEC-Q100 compliance are mandatory.
FAQ
What output voltages are factory-programmed in the MAX20029CATIA/V+T?
The MAX20029CATIA/V+T has four fixed output voltages: 1.8V (OUT1), 1.35V (OUT2), 3.3V (OUT3), and 1.2V (OUT4). These are laser-trimmed during manufacturing to achieve ±3% accuracy across -40°C to +125°C without external resistive dividers. The OUTS1–OUTS4 pins connect directly to their respective output capacitors, confirming the factory-set configuration.
Does the MAX20029CATIA/V+T support external clock synchronization?
Yes, the MAX20029CATIA/V+T features a dedicated SYNC pin that accepts an external clock signal between 1.7MHz and 2.5MHz. When driven, the internal oscillator synchronizes to this input, enabling deterministic timing alignment across multiple PMICs or with system clocks. If unused, SYNC must be tied to PGND_ to retain default 2.2MHz operation.
How does the MAX20029CATIA/V+T reduce electromagnetic interference?
The MAX20029CATIA/V+T reduces EMI through three integrated methods: (1) 180° phase interleaving between OUT3 and OUT4 to cancel input ripple currents, (2) optional linear spread-spectrum modulation (±3% frequency deviation at 1.5kHz rate), and (3) forced-PWM operation outside the AM radio band (0.53–1.71MHz). All are active simultaneously in the MAX20029CATIA/V+T variant.
What thermal management provisions does the MAX20029CATIA/V+T require on the PCB?
The MAX20029CATIA/V+T uses a 28-pin TQFN-EP package with an exposed thermal pad (EP) that must be soldered to a large internal or external ground plane using ≥9 thermal vias (0.3mm diameter). Analog Devices specifies θJA = 35°C/W on a 4-layer board; omitting proper EP grounding increases junction temperature by >25°C at full load, risking thermal shutdown.
Can the MAX20029CATIA/V+T be used in non-automotive applications?
While qualified per AEC-Q100 Grade 0 (-40°C to +125°C), the MAX20029CATIA/V+T is fully functional in industrial and medical applications requiring high-reliability quad-buck regulation. Its 3.0V–5.5V input range, 2.2MHz switching, and robust protection suite make it viable for ruggedized computing or test equipment-though automotive-specific features (e.g., load-dump immunity) are not explicitly tested outside automotive validation.
MAX20029CATIA/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:
- 1.5A
- 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)
MAX20029CATIA/V+T FAQ
1.How can I place an order for MAX20029CATIA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20029CATIA/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 MAX20029CATIA/V+T reliable?
The price and inventory of MAX20029CATIA/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 MAX20029CATIA/V+T is usually 5 days.
3.What payment methods are accepted for MAX20029CATIA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20029CATIA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20029CATIA/V+T?
MAX20029CATIA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20029CATIA/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 MAX20029CATIA/V+T?
For technical support, including MAX20029CATIA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20029CATIA/V+T requirements.
6.How does Aetrix verify that MAX20029CATIA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20029CATIA/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 MAX20029CATIA/V+T meets industry standards.
7.What is the process for return or replacement of MAX20029CATIA/V+T?
All MAX20029CATIA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20029CATIA/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 MAX20029CATIA/V+T part is unused and in its original packaging.
Return procedure for MAX20029CATIA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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