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Analog Devices Inc./Maxim Integrated MAX20029BATIC/V+
- Part No.:
- MAX20029BATIC/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20029BATIC/V+.pdf
- Description:
- IC REG BUCK ADJ 3A QUAD 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,255
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Product details
Overview
MAX20029BATIC/V+ from Analog Devices is an automotive-grade quad-output power-management IC (PMIC) integrating four synchronous step-down DC-DC converters with factory-programmed output voltages of 1.1V, -, 1.8V, and 1.0V. It delivers up to 3A on Channel 1 (via combined LX1/LX2), 1.5A on Channels 3 and 4, operates from 3.0V–5.5V input, and features 2.2MHz fixed-frequency PWM operation for compact all-ceramic designs. It is used in automotive ADAS domain controllers requiring tightly regulated, low-noise multi-rail power.
For engineers reviewing the MAX20029BATIC/V+ datasheet, MAX20029BATIC/V+ pinout, MAX20029BATIC/V+ application, or MAX20029BATIC/V+ equivalent, key selection criteria include its 3A + dual-1.5A channel configuration, -40°C to +125°C AEC-Q100–compatible operation, spread-spectrum EMI reduction (disabled in this variant), and 28-pin TQFN-EP package with exposed thermal pad for high-power-density automotive PCB layouts.
Technical Context
The MAX20029BATIC/V+ uses 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 under 1A step).
It implements input overvoltage protection (trip at 5.8V), undervoltage lockout (2.77V falling), cycle-by-cycle current limiting, and thermal shutdown at +185°C with 15°C hysteresis. The SYNC input supports external clock synchronization (1.7–2.5MHz), and PG_ outputs provide programmable timeout (256 cycles) with ±6% OV/±6% UV detection windows.
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 |
| Output Configuration | 1×3A (CH1 via LX1+LX2), 2×1.5A (CH3, CH4) - enables high-current core rail + dual peripheral rails |
| Fixed Output Voltages | 1.1V (CH1), - (CH2 disabled), 1.8V (CH3), 1.0V (CH4) - factory-trimmed for ±3% accuracy without external resistors |
| Switching Frequency | 2.2MHz ±10% - enables use of small 1.0µH/1.5µH inductors and all-ceramic output capacitors |
| Thermal Performance | θJA = 35°C/W, θJC = 3°C/W - requires exposed pad soldered to GND plane for >2W continuous dissipation |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive applications per AEC-Q100 stress requirements |
| Protection Features | OVP (5.8V), UVLO (2.77V), OTS (+185°C), short-circuit current limit - ensures robustness in harsh environments |
Pinout & Package
MAX20029BATIC/V+ is housed in a 28-pin, 5mm × 5mm × 0.8mm TQFN-EP package with exposed thermal pad (EP = GND). The package supports high thermal conductivity when mounted on a 4-layer PCB with thermal vias to inner ground planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13, 21, 27 | EN1, EN3, EN4, PG1 | Active-high enable inputs and open-drain power-good outputs - support independent sequencing and fault reporting per enabled rail |
| 2, 7, 15, 20 | PV1, PV2, PV3, PV4 | Independent input voltage pins - allow separate input filtering and noise isolation for each buck stage |
| 3, 6, 16, 19 | LX1, LX2, LX3, LX4 | Switching node terminals - LX1 and LX2 are internally paralleled for 3A CH1; others drive individual 1.5A channels |
| 4, 5, 17, 18, 11, 24 | PGND1–PGND4, GND, GND | Dedicated power grounds per channel plus analog ground - minimizes ground bounce and improves PSRR |
| 8, 14, 22, 28 | OUTS2, OUTS3, OUTS4, OUTS1 | Voltage sense inputs - connected directly to output capacitors for accurate regulation; unused for factory-fixed outputs |
| 25 | SYNC | External clock synchronization input - disabled by grounding; accepts 1.7–2.5MHz clocks to eliminate beat frequencies |
| 26 | VA | Analog supply pin - powers internal reference and control logic; must be decoupled with ≥1µF ceramic capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Quad synchronous buck topology | Four integrated high-/low-side MOSFETs eliminate discrete FETs and gate drivers, reducing BOM count and layout area |
| Factory-programmed outputs | Eliminates need for precision feedback resistors - saves cost and board space while ensuring ±3% output accuracy across temperature |
| 180° phase interleaving (CH3/CH4) | Reduces input ripple current by ~70%, allowing smaller input capacitors and lowering EMI filter complexity |
| Individual soft-start and PG timing | Configurable 256-cycle PG timeout prevents false resets during startup; soft-start limits inrush current to protect upstream supplies |
| Integrated current sensing | Enables cycle-by-cycle current limiting without external sense resistors - improves efficiency and reduces thermal footprint |
| Exposed thermal pad (EP) | Provides <3°C/W junction-to-case thermal path - enables stable 2.2W operation at +70°C ambient with proper PCB copper design |
Applications
| ADAS Domain Controller Power | Automotive Infotainment SoC Rail |
|---|---|
Use Scenario: Powers vision processor, radar preprocessor, and CAN-FD interface in centralized ADAS ECU with strict EMI limits. IC Role / Device Role / Timing Role: Provides isolated 1.1V core, 1.8V I/O, and 1.0V auxiliary rails with synchronized switching to avoid AM-band interference. Use Value: 2.2MHz operation avoids AM radio band (530–1710kHz); 180° phasing cuts input ripple, enabling smaller 10µF total input capacitance. |
Use Scenario: Supplies multi-core application processor and GPU in head-unit with dynamic voltage scaling requirements. IC Role / Device Role / Timing Role: Delivers sequenced 1.1V CPU, 1.8V memory, and 1.0V peripheral rails using independent EN/PG signals for safe boot-up. Use Value: Factory-set outputs eliminate resistor networks; individual soft-start prevents brownout during simultaneous rail activation. |
| Automotive Camera Module | Telematics Control Unit (TCU) |
Use Scenario: Powers image sensor, ISP, and MIPI transmitter in rear-view camera with space-constrained flex-rigid PCB. IC Role / Device Role / Timing Role: Generates 1.1V digital core, 1.8V interface, and 1.0V analog bias rails from 5V pre-regulator in compact 5mm × 5mm footprint. Use Value: TQFN-EP package with thermal vias dissipates 1.8W at +85°C ambient - eliminates need for heatsinks in sealed enclosures. |
Use Scenario: Supplies LTE modem, GNSS receiver, and secure MCU in vehicle-to-cloud communication module. IC Role / Device Role / Timing Role: Provides fault-tolerant 1.1V, 1.8V, and 1.0V rails with OVP/UVLO/OTS protection for unattended 24/7 operation. Use Value: Input OVP (5.8V) and thermal shutdown (+185°C) prevent damage during load dump or thermal runaway events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-buck PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20029BATIE/V+ | Same package and pinout; factory-set outputs: 1.5V/-/1.8V/3.3V; spread-spectrum enabled | Better suited for mixed-signal systems needing 3.3V I/O and EMI-sensitive RF sections | Select when 3.3V rail and mandatory spread-spectrum are required; otherwise MAX20029BATIC/V+ offers tighter 1.0V/1.1V/1.8V match for modern SoCs |
| TPS659424RGER | 6-channel PMIC; 3A/2A/2A/1.5A/1.5A/1.5A; 2.7–5.5V input; 1.8V/1.0V/1.1V outputs available but not identical mapping | Higher channel count and integrated LDOs; requires different sequencing logic and layout | Choose for systems needing >4 rails or integrated always-on LDOs; MAX20029BATIC/V+ provides simpler, lower-cost solution for exact 3-rail needs |
Compared with MAX20029BATIE/V+, MAX20029BATIC/V+ trades spread-spectrum EMI reduction for precise 1.0V/1.1V/1.8V rail alignment critical for latest automotive processors; versus TPS659424RGER, it offers lower BOM cost and smaller footprint for applications strictly requiring three well-regulated rails without LDOs.
Availability
MAX20029BATIC/V+ 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 ranges and long production lifecycles.
Supply support for MAX20029BATIC/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 digital signal processing semiconductors, serving automotive, industrial, and communications 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 body electronics where reliability, EMI performance, and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum continuous output current capability of MAX20029BATIC/V+?
MAX20029BATIC/V+ delivers up to 3A on Channel 1 (achieved by paralleling LX1 and LX2), 1.5A on Channel 3, and 1.5A on Channel 4. Channel 2 is disabled in this variant. All channels maintain ±3% output voltage accuracy across -40°C to +125°C and full load range, verified per datasheet Electrical Characteristics table.
Does MAX20029BATIC/V+ support external frequency synchronization?
Yes, MAX20029BATIC/V+ includes a dedicated SYNC pin (Pin 25) that accepts external clock signals from 1.7MHz to 2.5MHz. When not used, SYNC must be tied to PGND_ to retain the default 2.2MHz internal oscillator frequency. This feature allows elimination of switching frequency beat notes in multi-PMIC systems.
How is output voltage set on MAX20029BATIC/V+?
MAX20029BATIC/V+ uses factory-programmed output voltages: 1.1V (CH1), disabled (CH2), 1.8V (CH3), and 1.0V (CH4). No external resistors are needed - the internal reference and trim bits ensure ±3% accuracy across temperature and load. OUTS pins are internally connected; external feedback is unnecessary and not supported in this variant.
What thermal design considerations apply to MAX20029BATIC/V+?
MAX20029BATIC/V+ requires the exposed thermal pad (EP) to be soldered to a solid GND plane with ≥6 thermal vias (0.3mm diameter) connecting to inner ground layers. With this layout, it sustains 2.2W dissipation at +70°C ambient (θJA = 35°C/W). Failure to implement proper thermal land results in junction temperatures exceeding +150°C under full load.
Which protection features are active on MAX20029BATIC/V+?
MAX20029BATIC/V+ integrates input overvoltage protection (trip at 5.8V), input undervoltage lockout (2.77V falling), cycle-by-cycle current limiting on all active channels, and thermal shutdown at +185°C with 15°C hysteresis. All protections are fully functional without external components and operate across the full -40°C to +125°C temperature range.
MAX20029BATIC/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:
- 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+ FAQ
1.How can I place an order for MAX20029BATIC/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20029BATIC/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 MAX20029BATIC/V+ reliable?
The price and inventory of MAX20029BATIC/V+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20029BATIC/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20029BATIC/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20029BATIC/V+?
MAX20029BATIC/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20029BATIC/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 MAX20029BATIC/V+?
For technical support, including MAX20029BATIC/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20029BATIC/V+ requirements.
6.How does Aetrix verify that MAX20029BATIC/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20029BATIC/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 MAX20029BATIC/V+ meets industry standards.
7.What is the process for return or replacement of MAX20029BATIC/V+?
All MAX20029BATIC/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20029BATIC/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 MAX20029BATIC/V+ part is unused and in its original packaging.
Return procedure for MAX20029BATIC/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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