My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20029BATID/V+T
- Part No.:
- MAX20029BATID/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX20029BATID/V+T.pdf
- Description:
- IC REG BUCK ADJ 3A QUAD 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,738
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20029BATID/V+T 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 delivers up to 3A on Channel 1 (via parallel operation), 1.5A on Channels 3 and 4, and 0.5A on Channel 2; operates from 3.0V–5.5V input; features 2.2MHz fixed-frequency PWM switching; and supports factory-programmable output voltages (1.0V, 1.8V, adjustable, 3.3V). It is designed for post-regulation in ADAS domain controllers and infotainment power rails.
For engineers reviewing the MAX20029BATID/V+T datasheet, MAX20029BATID/V+T pinout, MAX20029BATID/V+T application, or MAX20029BATID/V+T equivalent, key selection criteria include its 28-pin TQFN-EP package, -40°C to +125°C automotive qualification, spread-spectrum EMI reduction, individual enable/PG outputs, and hybrid load-line architecture enabling compact ceramic-capacitor-only designs.
Technical Context
The MAX20029BATID/V+T 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 and EMI.
It integrates pMOS/nMOS switches with on-resistances of 125mΩ/100mΩ (typ), supports SYNC input synchronization (1.7–2.5MHz), and includes factory-programmable PG timeout (256 cycles), soft-start ramp time (3272 cycles), and spread-spectrum modulation (±3% frequency deviation at 1.5kHz).
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 (±0.2MHz) - enables all-ceramic capacitor design and minimizes inductor size (1.0µH/1.5µH typical). |
| Output Current Capability | Channel 1: 3A (combined LX1+LX2); Ch2: 0.5A; Ch3: 1.5A; Ch4: 0.5A - matches multi-rail SoC core/I/O/peripheral sequencing needs. |
| Output Voltage Options | 1.0V, 1.8V, adjustable (via resistor divider), 3.3V - factory-programmed per channel for precise rail generation without external feedback resistors. |
| Thermal Performance | Junction-to-case thermal resistance θJC = 3°C/W - requires exposed pad soldered to large GND plane for automotive 125°C ambient operation. |
| Protection Features | Input overvoltage lockout (5.8V), undervoltage lockout (2.68V), cycle-by-cycle current limiting, and thermal shutdown at +185°C - ensures robustness in harsh automotive environments. |
| EMI Reduction | Spread-spectrum option (+3% Δf at 1.5kHz) and 180° phase shift between OUT3/OUT4 - reduces peak radiated emissions without filtering overhead. |
Pinout & Package
MAX20029BATID/V+T is housed in a 28-pin, 5mm × 5mm × 0.8mm TQFN-EP package with exposed thermal pad (EP = GND). The package is RoHS-compliant and rated for -40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 | Active-high enable for Buck 1 | Controls startup of 3A combined channel; must be pulled high via MCU GPIO or bias network. |
| LX1, LX2 | Switching nodes for Buck 1 & 2 | LX1 and LX2 are internally connected in MAX20029B variants to form single 3A path; require low-inductance layout to PGND1/PGND2. |
| OUTS1–OUTS4 | Voltage sense inputs | Connect directly to output capacitors; OUTS2 tied to GND in MAX20029B configuration per Selector Guide. |
| PG1–PG4 | Open-drain power-good indicators | Assert low during undervoltage/overvoltage (±6%/±10%), soft-start, or shutdown; require external pull-up to VA (≤VA). |
| SYNC | External clock synchronization input | Accepts 1.7–2.5MHz CMOS clock; connect to PGND if unused to retain internal 2.2MHz oscillator. |
| EP | Exposed thermal pad | Must be soldered to solid GND plane with ≥6 thermal vias; primary heat dissipation path (θJC = 3°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Quad synchronous buck with integrated FETs | Eliminates 8 external MOSFETs and associated gate-drive circuitry, reducing BOM count and layout area by >40% vs discrete solution. |
| Hybrid load-line architecture | Reduces required output capacitance by up to 30%, enabling smaller 22µF ceramic caps instead of larger bulk electrolytics. |
| Individual enable and PG outputs | Enables precise power-rail sequencing (e.g., core before I/O) without external supervisors or timers. |
| Factory-programmable output voltages | Guarantees ±3% output accuracy across temperature without 0.1% feedback resistors - cuts calibration cost and test time. |
| 180° phase interleaving (OUT3/OUT4) | Cancels input ripple current harmonics, cutting required input capacitance by ~50% and easing EMI filter design. |
Applications
| ADAS Domain Controller Power | Automotive Infotainment SoC Rails |
|---|---|
Use Scenario: Powering NVIDIA Orin or Qualcomm SA8155P SoC with multiple voltage domains (core, GPU, memory, I/O). IC Role / Device Role / Timing Role: Quad PMIC delivering sequenced 1.0V (core), 1.8V (GPU), adjustable (memory), and 3.3V (I/O) rails with independent enable/PG signals. Use Value: Reduces board space by consolidating four regulators into one 5mm × 5mm package while meeting ASIL-B functional safety timing requirements via deterministic soft-start (3272 cycles). |
Use Scenario: Supplying display interface (LVDS), audio codec, and touch controller in head-unit systems. IC Role / Device Role / Timing Role: Generating stable 1.8V (interface), 3.3V (peripherals), and two configurable rails for variable display backlight or sensor biasing. Use Value: Spread-spectrum and phase interleaving suppress radiated emissions below CISPR-25 Class 5 limits without added ferrites or shielding. |
| Automotive Telematics Control Unit (TCU) | Body Control Module (BCM) Subsystem |
Use Scenario: Powering cellular modem (LTE/5G), GNSS receiver, and CAN transceivers in vehicle connectivity modules. IC Role / Device Role / Timing Role: Providing isolated, noise-immune 1.0V (modem core), 1.8V (GNSS RF), and 3.3V (CAN PHY) rails with independent fault reporting via PG outputs. Use Value: Input OV/UVLO and thermal shutdown protect against battery jump-start transients and under-hood thermal stress up to +125°C ambient. |
Use Scenario: Regulating power for door module microcontrollers, LED drivers, and LIN transceivers. IC Role / Device Role / Timing Role: Delivering 0.5A (LIN), 1.5A (MCU), and two auxiliary rails with soft-start to prevent inrush-induced brownouts during wake-up. Use Value: 2.2MHz switching allows use of miniature 1.0µH/1.5µH shielded inductors, enabling ultra-thin BCM PCB stacking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-output automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20029BATIC/V+ | No spread-spectrum; PG timeout = 256 cycles (vs. 256 in MAX20029BATID/V+T); same 3A/1.5A/0.5A/1.5A channel config. | Suitable where EMI is managed at system level (e.g., shielded enclosure); identical sequencing and thermal behavior. | Select MAX20029BATIC/V+ when spread-spectrum is unnecessary and cost optimization is prioritized. |
| TPS6594212RGER | TI device with 4 buck + 3 LDOs; 2.1MHz switching; 1.8V–5.5V input; supports I²C programmability and dynamic voltage scaling. | Better suited for software-defined power sequencing and adaptive SoC voltage scaling; lacks factory-programmed fixed outputs. | Choose TPS6594212RGER when firmware-controlled rail adjustment or additional LDOs are required beyond MAX20029BATID/V+T's capabilities. |
Compared with MAX20029BATIC/V+, MAX20029BATID/V+T adds spread-spectrum EMI reduction critical for unshielded infotainment layouts; versus TPS6594212RGER, it trades I²C flexibility for lower BOM cost, smaller footprint, and guaranteed ±3% factory-trimmed output accuracy without calibration.
Availability
MAX20029BATID/V+T is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, infotainment head-units, telematics control units, and body control modules requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX20029BATID/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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20029 family is part of Analog Devices' automotive power-management portfolio, engineered specifically for ASIL-ready point-of-load regulation in safety-critical vehicle subsystems with stringent EMI, thermal, and reliability requirements.
FAQ
What output current does MAX20029BATID/V+T support per channel?
MAX20029BATID/V+T supports 3A on Channel 1 (achieved by paralleling LX1 and LX2), 0.5A on Channel 2, 1.5A on Channel 3, and 0.5A on Channel 4. These ratings are validated across -40°C to +125°C and reflect the specific variant defined in the Selector Guide - distinct from MAX20029/MAX20029C configurations with four 1.5A channels.
Does MAX20029BATID/V+T require external feedback resistors for its output voltages?
No. MAX20029BATID/V+T uses factory-programmed output voltages: 1.0V (Ch1), 1.8V (Ch2), adjustable (Ch3), and 3.3V (Ch4). This eliminates external feedback resistors and guarantees ±3% output accuracy across temperature without 0.1% precision components - a key differentiator from adjustable-only variants like MAX20029ATIA/V+.
How is EMI reduced in MAX20029BATID/V+T?
MAX20029BATID/V+T reduces EMI via three integrated methods: (1) 2.2MHz fixed-frequency PWM operation moves switching noise above the AM band; (2) 180° phase interleaving between OUT3 and OUT4 cancels input ripple current; and (3) factory-enabled spread-spectrum modulation (±3% frequency deviation at 1.5kHz) spreads spectral energy to lower peak emissions - all without external filters.
What is the purpose of the SYNC pin on MAX20029BATID/V+T?
The SYNC pin on MAX20029BATID/V+T accepts an external clock signal (1.7–2.5MHz) to synchronize the internal 2.2MHz oscillator, enabling deterministic timing across multiple PMICs or with system clocks. When unused, SYNC must be tied to PGND to maintain default operation - floating the pin may cause instability or erratic switching behavior.
Can MAX20029BATID/V+T operate reliably at +125°C ambient temperature?
Yes. MAX20029BATID/V+T is specified for -40°C to +125°C ambient operation and incorporates thermal shutdown at +185°C junction temperature with 15°C hysteresis. Reliable operation at +125°C ambient requires proper thermal design: soldering the exposed pad (EP) to a large GND plane with ≥6 thermal vias and minimizing θCA through optimized PCB copper layout.
MAX20029BATID/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:
- 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+T FAQ
1.How can I place an order for MAX20029BATID/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20029BATID/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 MAX20029BATID/V+T reliable?
The price and inventory of MAX20029BATID/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 MAX20029BATID/V+T is usually 5 days.
3.What payment methods are accepted for MAX20029BATID/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20029BATID/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20029BATID/V+T?
MAX20029BATID/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20029BATID/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 MAX20029BATID/V+T?
For technical support, including MAX20029BATID/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20029BATID/V+T requirements.
6.How does Aetrix verify that MAX20029BATID/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20029BATID/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 MAX20029BATID/V+T meets industry standards.
7.What is the process for return or replacement of MAX20029BATID/V+T?
All MAX20029BATID/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20029BATID/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 MAX20029BATID/V+T part is unused and in its original packaging.
Return procedure for MAX20029BATID/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20029BATID/V+T 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…
