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Analog Devices Inc./Maxim Integrated MAX20029ATIA/V+
- Part No.:
- MAX20029ATIA/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20029ATIA/V+.pdf
- Description:
- IC REG BUCK ADJ 1.5A QUAD 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:520
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Product details
Overview
MAX20029ATIA/V+ from Analog Devices is a quad-output automotive-grade PMIC integrating four synchronous step-down DC-DC converters with factory-programmable 1.5A per channel, 2.2MHz fixed-frequency PWM operation, and 3.0V–5.5V input range. It delivers adjustable 1.0V–4.0V outputs and supports spread-spectrum EMI reduction, making it suitable for ADAS domain controllers requiring tightly regulated multi-rail power.
For engineers reviewing the MAX20029ATIA/V+ datasheet, MAX20029ATIA/V+ pinout, MAX20029ATIA/V+ application, or MAX20029ATIA/V+ equivalent, key selection criteria include its quad 1.5A capability, -40°C to +125°C automotive qualification, TQFN-28 EP package thermal performance, and individual enable/PG signaling for safety-critical sequencing.
Technical Context
The MAX20029ATIA/V+ implements peak current-mode control with internal slope compensation and loop compensation, eliminating external compensation components. Its four buck regulators operate in forced-PWM mode outside the AM band and support 180° phase interleaving between OUT3/OUT4 to reduce input ripple current.
It features factory-programmed spread-spectrum disabled and 256-cycle PG timeout, with all four channels configured for adjustable output (ADJ) and identical 1.5A current capability per channel-matching the MAX20029/MAX20029C variant family specification.
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 all-ceramic design with small 1.5µH inductors and minimal footprint |
| Output Current per Channel | 1.5A continuous - sufficient for powering multiple SoC cores, SerDes PHYs, or sensor interfaces |
| Output Voltage Range | 1.0V to 4.0V (adjustable) - covers DDR I/O, core logic, analog peripherals, and interface rails |
| Operating Temperature | -40°C to +125°C - qualified for under-hood and cockpit ECUs without derating |
| Package Thermal Resistance | θJA = 35°C/W - enables >2W dissipation with standard 4-layer PCB and exposed pad grounding |
| Protection Features | OVP (5.8V), UVLO (2.77V), cycle-by-cycle current limit, thermal shutdown at 185°C - meets ASIL-B functional safety prerequisites |
Pinout & Package
MAX20029ATIA/V+ uses a 28-pin 5mm × 5mm × 0.8mm TQFN-EP package with exposed thermal pad (EP = GND). The package supports high-power density layout with low-inductance ground paths via dedicated PGND1–PGND4 pins and separate analog ground (GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4 | Active-high enable inputs | Independent digital control of each buck channel; allows precise power-up/down sequencing |
| PG1–PG4 | Open-drain power-good outputs | Assert high when output is within ±6% regulation window; requires external pull-up to VA |
| LX1–LX4 | Switching node terminals | Connect to external inductors; LX3/LX4 are 180° out-of-phase to minimize input ripple |
| OUTS1–OUTS4 | Voltage sense inputs | Enable adjustable output via external resistor divider; connect directly to VOUT for fixed 1.0V |
| PV1–PV4 | Power input pins | Each requires ≥2.2µF ceramic bypass capacitor placed adjacent to pin for EMI suppression |
| SYNC | External clock synchronization input | Accepts 1.7–2.5MHz clock; tied to PGND_ to use internal 2.2MHz oscillator |
Key Features
| Feature | Design Value |
|---|---|
| Quad 1.5A synchronous buck converters | Enables single-chip replacement of four discrete DC-DC modules, reducing BOM count and board area by >40% |
| 2.2MHz fixed-frequency PWM | Eliminates audible noise and allows use of compact 1.5µH inductors with <1mm height profile |
| 180° phase interleaving (OUT3/OUT4) | Reduces RMS input capacitance requirement by ~30% and lowers conducted EMI peaks |
| Factory-programmed spread-spectrum off | Provides deterministic switching frequency for timing-critical applications like camera ISP clocks |
| Individual EN/PG per channel | Supports ASIL-B-compliant power sequencing without external logic or FPGA intervention |
Applications
| ADAS Domain Controller Power | Automotive Infotainment SoC Rail |
|---|---|
Use Scenario: Powering multi-core SoC (e.g., NXP S32G) with independent 1.2V core, 1.8V I/O, 3.3V interface, and 1.0V DDR termination rails. IC Role / Device Role / Timing Role: Primary quad-rail PMIC delivering sequenced, monitored, and protected voltage domains. Use Value: Eliminates need for four discrete buck ICs while maintaining ±3% output accuracy across -40°C to +125°C and load transients. |
Use Scenario: Supplying display processor, audio codec, CAN-FD transceiver, and touch controller in head-unit systems. IC Role / Device Role / Timing Role: Centralized power management unit with independent enable/control per subsystem. Use Value: Reduces system-level power sequencing complexity and enables fail-safe shutdown via individual PG assertion. |
| Automotive Camera Module | Body Control Module (BCM) |
Use Scenario: Powering image sensor (1.2V), ISP (1.8V), MIPI PHY (1.0V), and lens actuator driver (3.3V) in surround-view cameras. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC solution meeting AEC-Q100 Grade 0 requirements. Use Value: Achieves <15µs PG response time and withstands load steps up to 1.5A with <±3.5% transient deviation. |
Use Scenario: Regulating microcontroller core (1.2V), LIN transceiver (5V derived), EEPROM (3.3V), and LED drivers (5V) in gateway modules. IC Role / Device Role / Timing Role: High-integration PMIC supporting mixed-voltage, mixed-load automotive sub-systems. Use Value: Enables single-supply design from 5V pre-regulator while providing fault-isolated outputs and OVP/UVLO protection. |
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 |
|---|---|---|---|
| MAX20029ATIF/V+ | Same 4×1.5A architecture but includes factory-enabled spread-spectrum modulation (+3%) | Better suited for EMI-sensitive infotainment displays where spectral peak suppression is prioritized over deterministic frequency | Select MAX20029ATIF/V+ only if spread-spectrum is required; otherwise MAX20029ATIA/V+ offers simpler timing analysis |
| TPS653221AQPWPRQ1 | Triple 3A/2A/2A + LDO architecture; no spread-spectrum; 2.1MHz switching; different pinout and sequencing logic | Targeted at MCU-centric systems needing higher single-rail current, not quad-balanced loads | Choose TPS653221AQPWPRQ1 for applications requiring >1.5A on one rail; MAX20029ATIA/V+ remains optimal for balanced quad-rail designs |
Compared with MAX20029ATIF/V+, MAX20029ATIA/V+ provides deterministic 2.2MHz operation ideal for timing-critical domains; versus TPS653221AQPWPRQ1, it delivers superior current balance across four rails but lacks integrated LDOs for auxiliary biasing.
Availability
MAX20029ATIA/V+ is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, infotainment head-units, surround-view camera modules, and body control modules requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX20029ATIA/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 AEC-Q100-qualified solutions.
The MAX20029 series belongs to Analog Devices' automotive power management portfolio, designed specifically for next-generation vehicle compute platforms requiring compact, thermally efficient, and functionally safe multi-rail regulation.
FAQ
What is the maximum output current per channel for MAX20029ATIA/V+?
The MAX20029ATIA/V+ supports up to 1.5A continuous output current on each of its four buck channels. This rating is validated across the full -40°C to +125°C operating temperature range and includes margin for thermal derating in typical 4-layer PCB layouts with proper thermal vias and ground plane design. The device maintains regulation and protection functionality at full load.
Does MAX20029ATIA/V+ support external synchronization?
Yes, MAX20029ATIA/V+ includes 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; when left unconnected or tied to PGND_, the device operates at its nominal 2.2MHz switching frequency. This feature enables deterministic timing alignment in multi-PMIC systems.
What output voltage options are available for MAX20029ATIA/V+?
MAX20029ATIA/V+ is factory-configured for adjustable output voltage (ADJ) on all four channels, allowing user-defined settings from 1.0V to 4.0V using external resistor dividers. It does not ship with fixed factory-set voltages - configuration is performed during circuit design via the OUTSx feedback network per the datasheet's Equation 1 and Figure 3.
How is thermal performance managed in the MAX20029ATIA/V+ package?
The MAX20029ATIA/V+ uses a 28-pin TQFN-EP package with an exposed thermal pad (EP) that must be soldered to a large PCB ground plane. With standard 4-layer board construction and thermal vias, its junction-to-ambient thermal resistance is 35°C/W, enabling >2W total power dissipation. Layout adherence to Analog Devices' guidelines - including short high-current paths and dedicated PGND planes - is essential to maintain +125°C operation.
What protection features does MAX20029ATIA/V+ include?
MAX20029ATIA/V+ integrates input overvoltage protection (trip at 5.8V), undervoltage lockout (2.77V falling), cycle-by-cycle current limiting, overtemperature shutdown (185°C), and open-drain power-good monitoring per channel. All protections are fully operational across the automotive temperature range and require no external components to activate.
MAX20029ATIA/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tube
- 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)
MAX20029ATIA/V+ FAQ
1.How can I place an order for MAX20029ATIA/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20029ATIA/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 MAX20029ATIA/V+ reliable?
The price and inventory of MAX20029ATIA/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20029ATIA/V+ is usually 5 days.
3.What payment methods are accepted for MAX20029ATIA/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20029ATIA/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20029ATIA/V+?
MAX20029ATIA/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20029ATIA/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 MAX20029ATIA/V+?
For technical support, including MAX20029ATIA/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20029ATIA/V+ requirements.
6.How does Aetrix verify that MAX20029ATIA/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20029ATIA/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 MAX20029ATIA/V+ meets industry standards.
7.What is the process for return or replacement of MAX20029ATIA/V+?
All MAX20029ATIA/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20029ATIA/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 MAX20029ATIA/V+ part is unused and in its original packaging.
Return procedure for MAX20029ATIA/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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