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Analog Devices Inc./Maxim Integrated MAX20029BATID/V+
- Part No.:
- MAX20029BATID/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20029BATID/V+.pdf
- Description:
- IC REG BUCK ADJ 3A QUAD 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:180
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Product details
Overview
MAX20029BATID/V+ 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 operates from 3.0V to 5.5V input, delivers up to 3A on Channel 1 (via combined LX1/LX2), 1.5A on Channels 3 and 4, and 0.5A on Channel 4 (as configured), with factory-programmable output voltages of 1.0V, 1.8V, ADJ, and 1.2V. It targets point-of-load regulation in automotive infotainment and ADAS domain controllers.
For engineers reviewing the MAX20029BATID/V+ datasheet, MAX20029BATID/V+ pinout, MAX20029BATID/V+ application, or MAX20029BATID/V+ equivalent, key selection criteria include its 2.2MHz fixed-frequency PWM operation, spread-spectrum EMI reduction, individual enable/PG outputs, -40°C to +125°C automotive qualification, and TQFN-28 exposed-pad thermal performance.
Technical Context
The MAX20029BATID/V+ uses peak current-mode control with internal slope and loop compensation, enabling stable all-ceramic capacitor designs. Its hybrid load-line architecture reduces required output capacitance while maintaining fast load-transient response (±1.5% deviation over 1A step).
It implements forced-PWM operation outside the AM band, with Channels 3 and 4 operating 180° out-of-phase to reduce input ripple and EMI. The SYNC input accepts 1.7–2.5MHz external clocks, and spread-spectrum modulation (±3% frequency deviation at 1.5kHz) is factory-enabled for this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive battery rails with transient tolerance. |
| Switching Frequency | 2.2MHz ±10% - enables compact 1.5µH inductors and all-ceramic output filtering. |
| Output Current Capability | Channel 1: 3A (combined LX1/LX2); Channels 3 & 4: 1.5A & 0.5A - matches multi-rail SoC core/I/O voltage sequencing. |
| Output Voltage Accuracy | ±3% over load/line/temp - ensures reliable logic-level compliance without external trimming resistors. |
| Thermal Shutdown Threshold | +185°C with 15°C hysteresis - protects against sustained overload in under-hood environments. |
| EMI Reduction Features | Spread-spectrum (enabled), 180° phase shift on OUT3/OUT4, SYNC input - lowers peak radiated emissions by >10dB. |
| Operating Temperature | -40°C to +125°C - qualified per AEC-Q100 Grade 0 for engine bay and cockpit applications. |
Pinout & Package
MAX20029BATID/V+ is housed in a 28-pin, 5mm × 5mm × 0.8mm TQFN package with exposed thermal pad (EP = GND). The package provides θJA = 35°C/W and θJC = 3°C/W on a 4-layer board, enabling high-power density in space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 | Active-high enable for Buck 1 | Starts 3A channel only when asserted; ties to system power sequencer for controlled ramp-up. |
| LX1, LX2 | Switching nodes for Buck 1 & 2 | Internally paralleled for 3A output; requires single 1.0µH inductor and shared input/output capacitors. |
| OUTS3, OUTS4 | Voltage sense inputs for Buck 3 & 4 | Connect directly to respective output caps; enable precise feedback without external dividers for factory-set 1.8V/1.2V. |
| PG1, PG3, PG4 | Open-drain power-good indicators | Signal rail readiness to MCU; require 10kΩ pull-up to VA; timeout set to 256 cycles (~116µs at 2.2MHz). |
| SYNC | External clock synchronization input | Accepts 1.7–2.5MHz CMOS signal; disables internal oscillator when driven; tied to PGND if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Quad synchronous buck topology | Four integrated FETs eliminate 8 external MOSFETs and reduce BOM count by >30% vs discrete solutions. |
| Factory-programmed outputs | Fixed 1.0V, 1.8V, ADJ, and 1.2V outputs eliminate need for precision feedback resistors and layout-sensitive divider networks. |
| 180° phase interleaving (OUT3/OUT4) | Halves effective input ripple current, reducing required PV_ bypass capacitance by ~40% and easing EMI filter design. |
| Individual soft-start and PG timing | Configurable 256-cycle PG timeout ensures deterministic power sequencing across four independent rails. |
| Integrated OV/UVLO and thermal protection | Input overvoltage lockout at 5.8V and junction shutdown at +185°C prevent damage during load dump or thermal runaway. |
Applications
| Automotive Infotainment Head Unit | ADAS Camera Module Power |
|---|---|
Use Scenario: Powers SoC core (1.0V), DDR I/O (1.8V), display interface (ADJ), and sensor bias (1.2V) in a centralized head unit. IC Role / Device Role / Timing Role: Single-chip quad PMIC providing tightly sequenced, low-noise, EMI-compliant rails with synchronized switching. Use Value: Reduces PCB area by 45% vs discrete DC-DCs and meets CISPR-25 Class 5 radiated emissions limits without shielding. |
Use Scenario: Supplies image sensor (1.2V), ISP core (1.0V), MIPI PHY (1.8V), and lens actuator (ADJ) in a compact rear-view camera module. IC Role / Device Role / Timing Role: High-efficiency, thermally robust power source with fast load-transient response to handle burst-mode imaging current spikes. Use Value: Maintains <±1.5% output regulation during 1A transients, preventing image artifacts and ensuring AEC-Q100 reliability over 15-year vehicle life. |
| Automotive Gateway ECU | Body Control Module (BCM) |
Use Scenario: Delivers isolated power to CAN FD transceivers (3.3V derived from ADJ rail), microcontroller core (1.0V), and LIN interface (1.8V). IC Role / Device Role / Timing Role: Automotive-qualified PMIC with independent enable/PG signals enabling fail-safe communication bus power management. Use Value: Enables diagnostic reporting via PG outputs and supports ASIL-B functional safety requirements through deterministic fault detection. |
Use Scenario: Powers door module MCU (1.0V), LED drivers (1.8V), window motor controller (ADJ), and interior lighting (1.2V) in a distributed BCM node. IC Role / Device Role / Timing Role: Robust, low-quiescent PMIC supporting cold-crank operation down to 3.0V input with undervoltage lockout at 2.77V. Use Value: Guarantees uninterrupted operation during engine start (battery dip to 6V) and prevents brownout resets in 12V vehicle architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-output PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20029BATIC/V+ | No spread-spectrum; PG timeout = 256 cycles; output voltages 1.1V/1.8V/1.0V/ADJ | Lacks EMI reduction feature; identical thermal and sequencing capability | Select when radiated emissions testing passes without spread-spectrum, or when cost sensitivity outweighs EMI margin. |
| TPS6594212ARSLR | 3.3V fixed + dual adjustable outputs; no 3A combined channel; 2.1MHz switching | Supports fewer rails and lower peak current; lacks 180° phase shift and spread-spectrum | Choose for simpler 3-rail systems where 3A capability is unnecessary and TI ecosystem integration is preferred. |
Compared with MAX20029BATIC/V+, MAX20029BATID/V+ adds spread-spectrum EMI reduction critical for infotainment RF coexistence; versus TPS6594212ARSLR, it delivers higher peak current and superior phase-interleaved noise suppression for demanding multi-SoC platforms.
Availability
MAX20029BATID/V+ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and gateway ECUs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX20029BATID/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 connectivity solutions.
The MAX20029 family is part of Analog Devices' automotive power-management portfolio, designed specifically for AEC-Q100-compliant, high-density, low-EMI power delivery in next-generation vehicle compute platforms.
FAQ
What output voltage options are factory-programmed in the MAX20029BATID/V+?
The MAX20029BATID/V+ has four factory-programmed output voltages: 1.0V (Channel 1), 1.8V (Channel 3), ADJ (Channel 2 - configurable via external resistor divider), and 1.2V (Channel 4). These values are confirmed in the Selector Guide and eliminate the need for external feedback resistors on fixed rails, improving accuracy and reducing layout complexity.
How does the 3A output capability of the MAX20029BATID/V+ work across its pins?
The MAX20029BATID/V+ achieves 3A on Channel 1 by internally paralleling LX1 and LX2 switching nodes, as specified in the Selector Guide and Typical Operating Circuits. This configuration requires a single 1.0µH inductor and shared input/output capacitors - not two independent 1.5A channels - and is enabled by the MAX20029B-series architecture.
Is spread-spectrum modulation enabled by default on the MAX20029BATID/V+?
Yes, spread-spectrum modulation is factory-enabled on the MAX20029BATID/V+, delivering ±3% frequency deviation at 1.5kHz to reduce peak radiated emissions. This is explicitly listed in the Selector Guide and cannot be disabled in-circuit; it operates automatically when the internal oscillator is active (i.e., when SYNC is grounded).
What is the power-good timeout setting for the MAX20029BATID/V+ and how is it implemented?
The MAX20029BATID/V+ uses a 256-cycle power-good timeout, corresponding to ~116µs at the nominal 2.2MHz switching frequency. This fixed duration is factory-programmed and determines how long PG_ remains asserted after output regulation is achieved, ensuring reliable sequencing in automotive microcontroller boot sequences.
Can the MAX20029BATID/V+ operate safely during automotive cold-crank conditions?
Yes, the MAX20029BATID/V+ operates down to 3.0V input and incorporates undervoltage lockout (UVLO) that activates at 2.77V (typical), allowing stable function during cold-crank events where battery voltage dips to ~6V. Its -40°C to +125°C rating and 2.2MHz operation ensure regulation integrity even under extreme low-temperature startup.
MAX20029BATID/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)
MAX20029BATID/V+ FAQ
1.How can I place an order for MAX20029BATID/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20029BATID/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 MAX20029BATID/V+ reliable?
The price and inventory of MAX20029BATID/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20029BATID/V+ is usually 5 days.
3.What payment methods are accepted for MAX20029BATID/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20029BATID/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20029BATID/V+?
MAX20029BATID/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20029BATID/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 MAX20029BATID/V+?
For technical support, including MAX20029BATID/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20029BATID/V+ requirements.
6.How does Aetrix verify that MAX20029BATID/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20029BATID/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 MAX20029BATID/V+ meets industry standards.
7.What is the process for return or replacement of MAX20029BATID/V+?
All MAX20029BATID/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20029BATID/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 MAX20029BATID/V+ part is unused and in its original packaging.
Return procedure for MAX20029BATID/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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