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Analog Devices Inc./Maxim Integrated MAX20029ATIF/V+T
- Part No.:
- MAX20029ATIF/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20029ATIF/V+T.pdf
- Description:
- IC REG BUCK ADJ 1.5A QUAD 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,028
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Product details
Overview
MAX20029ATIF/V+T from Analog Devices is an automotive-grade quad-output PMIC integrating four synchronous step-down DC-DC converters with factory-programmed output voltages of 1.0V, 1.8V, adjustable (ADJ), and 3.3V; supports up to 1.5A per channel; operates from 3.0V–5.5V input; features 2.2MHz fixed-frequency PWM operation and spread-spectrum EMI reduction; used in ADAS domain controllers and infotainment power rails.
For engineers reviewing the MAX20029ATIF/V+T datasheet, MAX20029ATIF/V+T pinout, MAX20029ATIF/V+T application, or MAX20029ATIF/V+T equivalent, key selection criteria include per-channel current capability (1.5A ×4), factory-set output voltage configuration (1.0V/1.8V/ADJ/3.3V), spread-spectrum EMI mitigation, -40°C to +125°C automotive qualification, and TQFN-EP thermal performance.
Technical Context
The MAX20029ATIF/V+T implements peak current-mode control with internal slope compensation and loop compensation, eliminating external compensation components. It uses integrated low-RDS(ON) pMOS/nMOS switches (125mΩ/100mΩ typical) to sustain high efficiency across load range.
All four buck regulators operate in forced-PWM mode outside the AM band, with OUT3 and OUT4 phased 180° out-of-phase to reduce input ripple and EMI. The device accepts external synchronization via SYNC pin (1.7–2.5MHz) and includes factory-programmable power-good timeout (256 cycles).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery rail after pre-regulation. |
| Output Voltage Setpoints | 1.0V, 1.8V, adjustable (via external resistor divider), 3.3V - factory-trimmed for ±3% accuracy over temp/load. |
| Max Output Current | 1.5A per channel - enables powering multiple SoC cores, memory, and interface ICs from single PMIC. |
| Switching Frequency | 2.2MHz (±10%) - allows use of small 1.5µH inductors and all-ceramic output capacitors. |
| Spread Spectrum | +3% frequency deviation - reduces peak radiated emissions without requiring layout changes. |
| Operating Temperature | -40°C to +125°C - qualified per AEC-Q100 Grade 0 for under-hood and cockpit applications. |
| Package | 28-pin TQFN-EP (5mm × 5mm × 0.8mm) - exposed pad enables <3°C/W junction-to-case thermal resistance. |
Pinout & Package
MAX20029ATIF/V+T is housed in a 28-pin thermally enhanced TQFN package (5mm × 5mm, 0.8mm height) with exposed pad connected to GND for optimal thermal dissipation. Pin pitch is 0.5mm; land pattern follows JEDEC MO-220, outline 21-0140.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4 | Active-high enable inputs | Independent digital control of each buck converter; pull-down resistors internal (100kΩ). |
| PG1–PG4 | Open-drain power-good outputs | Assert low if output deviates >6% below or >10% above nominal; require external pull-up to VA. |
| OUTS1–OUTS4 | Voltage sense inputs | Connect to output capacitor for regulation; OUTS3 is adjustable (ADJ); others tied to fixed setpoints. |
| LX1–LX4 | Switch node terminals | High-impedance when disabled; drive external inductors; LX3/LX4 support 180° phase shift for EMI reduction. |
| PV1–PV4 | Power input pins | Each requires ≥2.2µF ceramic bypass capacitor; separate inputs minimize cross-talk between channels. |
| PGND1–PGND4 | Power ground returns | Dedicated ground paths per channel prevent noise coupling and improve transient response. |
| SYNC | External clock input | Accepts 1.7–2.5MHz square wave; connects to PGND_ to use internal 2.2MHz oscillator. |
| VA | Analog supply | Bias for internal reference and control circuitry; decoupled with ≥1µF ceramic capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Quad synchronous buck architecture | Four independent 1.5A channels eliminate need for discrete regulators and reduce BOM count by ≥75%. |
| Factory-programmed output voltages | 1.0V/1.8V/ADJ/3.3V configuration eliminates precision resistor networks and improves production yield. |
| 180° interleaving on OUT3/OUT4 | Halves effective input ripple current, reducing required input capacitance by ~30% and easing EMI filter design. |
| Integrated soft-start (1ms typical) | Prevents inrush current during power-up; avoids brownout on shared supply rails in multi-rail systems. |
| Overtemperature shutdown (185°C) | Thermal protection with 15°C hysteresis ensures safe recovery without system reset or latch-up. |
Applications
| ADAS Domain Controller Power | Automotive Infotainment SoC Rail |
|---|---|
Use Scenario: Powers vision processor, radar preprocessor, and CAN-FD gateway in centralized ADAS ECU. IC Role / Device Role / Timing Role: Primary quad-rail PMIC delivering 1.0V core, 1.8V I/O, adjustable 0.8–1.2V GPU, and 3.3V interface voltage. Use Value: Factory-set 1.0V/1.8V/ADJ/3.3V eliminates external feedback resistors; 1.5A per rail sustains burst loads during sensor fusion. | Use Scenario: Supplies application processor, DDR memory, display interface, and audio codec in head-unit design. IC Role / Device Role / Timing Role: Centralized power manager generating tightly regulated, sequenced rails with individual enable control. Use Value: Spread-spectrum + 180° phasing meets CISPR-25 Class 5 radiated emissions limits without added shielding. |
| Automotive Telematics Module | Body Control Module (BCM) Subsystem |
Use Scenario: Provides power to LTE modem, GNSS receiver, secure MCU, and CAN transceivers in telematics control unit. IC Role / Device Role / Timing Role: High-efficiency quad-buck regulator supporting cold-crank (3.0V min) and load-dump (5.5V max) conditions. Use Value: -40°C to +125°C rating and UVLO/OV protection ensure reliable startup and operation across global vehicle environments. | Use Scenario: Powers microcontroller, LIN transceiver, LED drivers, and sensor interfaces in distributed BCM node. IC Role / Device Role / Timing Role: Compact, thermally robust PMIC replacing discrete buck solutions in space-constrained modules. Use Value: TQFN-EP package with 3°C/W θJC enables 2.285W continuous dissipation at +70°C ambient-critical for sealed plastic housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20029ATIE/V+T | Same pinout and package; factory-set outputs: 1.5V/-/1.8V/3.3V (3A/-/1.5A/1.5A); no ADJ channel | Replaces MAX20029ATIF/V+T only where 1.5V core rail is required instead of adjustable output | Select MAX20029ATIE/V+T when fixed 1.5V core voltage suffices and channel 2 is unused. |
| TPS659421RWER | 6-channel PMIC; 3x 3A + 3x 1.5A; supports I²C programmability; larger 40-pin VQFN; higher quiescent current (12µA vs. 2µA) | Used in high-complexity domain controllers requiring dynamic voltage scaling and telemetry | Choose TPS659421RWER only when I²C configurability, additional channels, or telemetry are mandatory. |
Compared with MAX20029ATIF/V+T, MAX20029ATIE/V+T offers identical form factor but trades adjustability for a fixed 1.5V rail, while TPS659421RWER adds programmability and channels at the cost of size, complexity, and static power-making MAX20029ATIF/V+T optimal for cost-sensitive, fixed-rail automotive subsystems.
Availability
MAX20029ATIF/V+T is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, infotainment head-units, and telematics control units requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX20029ATIF/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, and communications markets since 1965.
The MAX20029 family is part of Analog Devices' automotive power-management portfolio, designed specifically for AEC-Q100-compliant point-of-load regulation in safety-critical and EMI-sensitive vehicle subsystems.
FAQ
What output voltage configuration does the MAX20029ATIF/V+T provide?
The MAX20029ATIF/V+T provides factory-programmed output voltages of 1.0V (Channel 1), 1.8V (Channel 2), adjustable (ADJ) via external resistor divider (Channel 3), and 3.3V (Channel 4). All channels support up to 1.5A output current and ±3% regulation accuracy over -40°C to +125°C.
Does the MAX20029ATIF/V+T support external clock synchronization?
Yes, the MAX20029ATIF/V+T supports external clock synchronization via its SYNC pin, which accepts frequencies from 1.7MHz to 2.5MHz. When SYNC is left unconnected or pulled to PGND_, the device defaults to its internal 2.2MHz oscillator. This feature enables timing alignment across multiple MAX20029ATIF/V+T devices or with system master clocks.
How is EMI reduced in the MAX20029ATIF/V+T?
The MAX20029ATIF/V+T reduces EMI through three integrated methods: 180° phase interleaving between OUT3 and OUT4, a factory-enabled ±3% spread-spectrum modulation, and forced-PWM operation outside the AM radio band (0.53–1.71MHz). These features collectively lower peak radiated emissions without requiring additional filtering components.
What thermal performance can be expected from the MAX20029ATIF/V+T package?
The MAX20029ATIF/V+T uses a 28-pin TQFN-EP package with a thermal resistance of θJA = 35°C/W (four-layer board) and θJC = 3°C/W. With proper PCB layout-including soldered exposed pad, thermal vias to inner ground plane, and ≥2oz copper-the device sustains 2.285W continuous power dissipation at +70°C ambient, enabling reliable operation in sealed automotive enclosures.
Is the MAX20029ATIF/V+T AEC-Q100 qualified?
Yes, the MAX20029ATIF/V+T is AEC-Q100 qualified for Grade 0 (-40°C to +125°C junction temperature) and specified for automotive applications. It includes input overvoltage protection (5.8V trip), undervoltage lockout (2.77V falling), cycle-by-cycle current limiting, and thermal shutdown at +185°C-meeting functional safety requirements for ASIL-B capable systems.
MAX20029ATIF/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)
MAX20029ATIF/V+T FAQ
1.How can I place an order for MAX20029ATIF/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20029ATIF/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 MAX20029ATIF/V+T reliable?
The price and inventory of MAX20029ATIF/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 MAX20029ATIF/V+T is usually 5 days.
3.What payment methods are accepted for MAX20029ATIF/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20029ATIF/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20029ATIF/V+T?
MAX20029ATIF/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20029ATIF/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 MAX20029ATIF/V+T?
For technical support, including MAX20029ATIF/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20029ATIF/V+T requirements.
6.How does Aetrix verify that MAX20029ATIF/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20029ATIF/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 MAX20029ATIF/V+T meets industry standards.
7.What is the process for return or replacement of MAX20029ATIF/V+T?
All MAX20029ATIF/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20029ATIF/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 MAX20029ATIF/V+T part is unused and in its original packaging.
Return procedure for MAX20029ATIF/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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