My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20029BATIB/V+
- Part No.:
- MAX20029BATIB/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20029BATIB/V+.pdf
- Description:
- IC REG BUCK ADJ 3A QUAD 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,431
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20029BATIB/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 1.0V, -, 1.8V, and 1.5V. It delivers up to 3A on Channel 1 (buck 1), 1.5A on Channels 3 and 4, and supports no output on Channel 2. Operating from 3.0V to 5.5V input, it features 2.2MHz fixed-frequency PWM, spread-spectrum EMI reduction, and operates across −40°C to +125°C for automotive point-of-load regulation.
For engineers reviewing the MAX20029BATIB/V+ datasheet, MAX20029BATIB/V+ pinout, MAX20029BATIB/V+ application, or MAX20029BATIB/V+ equivalent, key selection considerations include its 3A/1.5A/1.5A output current capability per channel, factory-set 1.0V/1.8V/1.5V outputs, 28-pin TQFN-EP package with exposed thermal pad, spread-spectrum option enabled, and 20,480-cycle power-good timeout.
Technical Context
The MAX20029BATIB/V+ implements 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 over 1A step).
It integrates low RDS(ON) pMOS (125–250mΩ) and nMOS (100–200mΩ) switches, enabling high efficiency at heavy loads and minimizing parasitic inductance. The device supports 180° phase interleaving between Buck 3 and Buck 4, reducing input ripple and improving EMI performance without requiring external synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive battery rails including cold-crank and load-dump conditions. |
| Switching Frequency | 2.2MHz ±10% - enables all-ceramic capacitor designs and compact 1.5µH inductors for most channels. |
| Output Current Capability | 3A (CH1), - (CH2 disabled), 1.5A (CH3), 1.5A (CH4) - supports high-current MCU core + I/O rail + interface rail configurations. |
| Output Voltage Accuracy | ±3% over load, line, and temperature - ensures reliable operation of sensitive automotive SoCs without external trimming. |
| Power-Good Timeout | 20,480 switching cycles (~9.3ms at 2.2MHz) - provides robust startup sequencing for multi-rail systems. |
| Thermal Shutdown Threshold | +185°C junction temperature with 15°C hysteresis - protects against sustained overload or poor PCB thermal design. |
| Spread-Spectrum Enable | Enabled (+3% frequency deviation) - reduces peak radiated emissions by spreading energy across 1.5kHz modulation bandwidth. |
Pinout & Package
MAX20029BATIB/V+ is housed in a 28-pin, 5mm × 5mm × 0.8mm TQFN package with exposed thermal pad (EP = GND). The package supports JEDEC-standard reflow and achieves θJA = 35°C/W on a four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 | Active-high enable for Buck 1 | Directly controls 3A output; must be pulled high for operation - used for primary rail sequencing. |
| LX1 | Buck 1 switching node | Connects to 1µH inductor; high-impedance when off - requires low-inductance layout to minimize switching losses. |
| PGND1 | Power ground for Buck 1 | Dedicated ground return path for 3A current - must be routed separately from analog ground to avoid noise coupling. |
| OUTS1 | Buck 1 voltage sense input | Connected to VOUT1 for feedback - enables precise regulation of factory-set 1.0V output. |
| PG1 | Open-drain power-good indicator for Buck 1 | Asserts high after soft-start and stable regulation - used for system-level power sequencing and fault detection. |
| SYNC | External clock synchronization input | Accepts 1.7–2.5MHz clock - unused pins must be tied to PGND_ to retain default 2.2MHz operation. |
| VA | Analog supply voltage | Supplies internal reference and control logic - requires dedicated 1µF ceramic decoupling to GND. |
| EP | Exposed thermal pad | Must be soldered to large GND plane via thermal vias - accounts for >80% of heat dissipation in high-power operation. |
Key Features
| Feature | Design Value |
|---|---|
| Quad synchronous buck architecture | Integrates four complete DC-DC converters with MOSFETs, eliminating discrete solutions and saving >40% board area. |
| Factory-programmed outputs | Delivers exact 1.0V (CH1), 1.8V (CH3), and 1.5V (CH4) without external resistors - reduces BOM cost and improves accuracy vs. adjustable variants. |
| 180° phase interleaving (CH3/CH4) | Halves input ripple current magnitude - allows smaller input capacitors and lowers EMI filter requirements. |
| Soft-start ramp time | ~1ms (MAX20029C/D variant) - limits inrush current during power-up to prevent brownout in shared supply systems. |
| Individual enable and PG outputs | Enables independent rail sequencing and fault isolation - critical for ASIL-B compliant automotive domain controllers. |
Applications
| ADAS Camera Module Power Supply | Automotive Infotainment SoC Core Rail |
|---|---|
Use Scenario: Powers image sensor, ISP, and MIPI interface in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Provides tightly regulated 1.0V core, 1.8V I/O, and 1.5V interface rails with synchronized startup and fault reporting. Use Value: Factory-set voltages eliminate resistor tolerance errors; 2.2MHz switching avoids AM band interference; spread-spectrum reduces EMI in compact camera housings. |
Use Scenario: Supplies multi-core application processor in head-unit or digital cluster with strict sequencing and thermal constraints. IC Role / Device Role / Timing Role: Delivers 3A at 1.0V for CPU core, 1.5A at 1.8V for GPU, and 1.5A at 1.5V for DDR I/O - all with individual enable/PG control. Use Value: 20,480-cycle PG timeout ensures reliable boot under slow-ramping supplies; TQFN-EP package meets automotive thermal derating requirements up to +125°C ambient. |
| Automotive Body Control Module (BCM) | Telematics Control Unit (TCU) Power Tree |
Use Scenario: Regulates power for microcontroller, CAN transceivers, LIN interfaces, and LED drivers in door modules or lighting ECUs. IC Role / Device Role / Timing Role: Generates multiple low-noise rails from 12V battery via intermediate 5V supply - uses CH1 (3A) for MCU core and CH3/CH4 for peripherals. Use Value: Input UVLO (2.77V) and OV protection (5.8V) safeguard against automotive battery faults; individual EN inputs allow dynamic rail shutdown for sleep mode current reduction. |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: Supplies 1.0V modem core, 1.8V RF interface, and 1.5V security co-processor - all with independent power-good monitoring. Use Value: Spread-spectrum and 180° phasing reduce conducted emissions into sensitive RF front-end; SYNC input allows clock alignment with baseband processor for deterministic jitter control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-buck PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20029BATIC/V+ | No spread-spectrum; 256-cycle PG timeout; same 3A/-/1.5A/1.5A current rating and 1.1V/-/1.8V/1.0V outputs. | Suitable where EMI compliance is met without spread-spectrum and faster PG assertion is needed for rapid diagnostics. | Select when lower radiated emissions are not required and shorter fault detection latency is prioritized. |
| MAX20429ATPA/V+ | Higher integration: adds LDOs, watchdog, and SPI interface; 2.2MHz switching; 3A/1.5A/1.5A/1.5A outputs; different pinout and footprint. | Targeted at next-gen ADAS processors requiring programmable sequencing, telemetry, and functional safety support (ASIL-B ready). | Choose when system-level diagnostics, firmware configurability, or additional power rails beyond four bucks are required. |
Compared with MAX20029BATIB/V+, MAX20029BATIC/V+ offers identical power delivery but lacks EMI-reduction features, while MAX20429ATPA/V+ trades pin compatibility for enhanced system management - making MAX20029BATIB/V+ optimal for cost-sensitive, EMI-constrained automotive power trees needing fixed-rail simplicity.
Availability
MAX20029BATIB/V+ is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC power supplies, and body control module designs requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.
Supply support for MAX20029BATIB/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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets since 1965.
The MAX20029 family is part of Analog Devices' automotive power-management portfolio, designed specifically for ASIL-compliant point-of-load regulation in camera modules, domain controllers, and telematics units operating under harsh automotive voltage and thermal conditions.
FAQ
What is the maximum output current capability of each channel in the MAX20029BATIB/V+?
The MAX20029BATIB/V+ delivers up to 3A on Channel 1 (Buck 1), no output on Channel 2 (Buck 2 disabled), 1.5A on Channel 3 (Buck 3), and 1.5A on Channel 4 (Buck 4). These ratings are validated across −40°C to +125°C and reflect the factory-programmed configuration specified in the Selector Guide. The 3A capability on CH1 is achieved using combined LX1/LX2 operation per the MAX20029B architecture.
Does the MAX20029BATIB/V+ require external feedback resistors for its output voltages?
No, the MAX20029BATIB/V+ does not require external feedback resistors. Its outputs are factory-programmed to 1.0V (CH1), - (CH2 disabled), 1.8V (CH3), and 1.5V (CH4), with internal reference and trimbits ensuring ±3% accuracy over temperature and load. External resistors are only needed for adjustable versions like MAX20029ATIA/V+.
How does the spread-spectrum feature function in the MAX20029BATIB/V+?
The MAX20029BATIB/V+ implements linear spread-spectrum modulation that varies the internal oscillator frequency between fSW and fSW + 3% at a 1.5kHz rate. This reduces peak radiated emissions without affecting regulation performance. The feature is factory-enabled and cannot be disabled via pin or register - it applies only to the internal oscillator, not external SYNC signals.
What is the purpose of the 20,480-cycle power-good timeout in the MAX20029BATIB/V+?
The 20,480-cycle power-good timeout in the MAX20029BATIB/V+ defines the minimum duration PG outputs remain asserted after output regulation is achieved. At 2.2MHz, this equals ~9.3ms - providing sufficient margin for slow-ramping supplies or noisy environments before downstream logic interprets PG as valid. This setting is fixed for MAX20029B variants and differs from the 256-cycle option in MAX20029 variants.
Can the MAX20029BATIB/V+ be synchronized to an external clock, and what are the acceptable frequency ranges?
Yes, the MAX20029BATIB/V+ supports external clock synchronization via the SYNC pin, accepting input frequencies from 1.7MHz to 2.5MHz. When not used, SYNC must be tied to PGND_ to retain the default 2.2MHz internal switching frequency. Synchronization preserves PWM mode operation and maintains phase relationships between channels, critical for deterministic EMI behavior in multi-PMIC systems.
MAX20029BATIB/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)
MAX20029BATIB/V+ FAQ
1.How can I place an order for MAX20029BATIB/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20029BATIB/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 MAX20029BATIB/V+ reliable?
The price and inventory of MAX20029BATIB/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20029BATIB/V+ is usually 5 days.
3.What payment methods are accepted for MAX20029BATIB/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20029BATIB/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20029BATIB/V+?
MAX20029BATIB/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20029BATIB/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 MAX20029BATIB/V+?
For technical support, including MAX20029BATIB/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20029BATIB/V+ requirements.
6.How does Aetrix verify that MAX20029BATIB/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20029BATIB/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 MAX20029BATIB/V+ meets industry standards.
7.What is the process for return or replacement of MAX20029BATIB/V+?
All MAX20029BATIB/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20029BATIB/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 MAX20029BATIB/V+ part is unused and in its original packaging.
Return procedure for MAX20029BATIB/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20029BATIB/V+ Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
