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Analog Devices Inc./Maxim Integrated MAX25302AATD/V+
- Part No.:
- MAX25302AATD/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
MAX25302AATD/V+.pdf
- Description:
- IC REG LINEAR POS ADJ 2A 14TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,348
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Product details
Overview
MAX25302AATD/V+ from Analog Devices is a pin-selectable 2A automotive-grade LDO linear regulator delivering ±1% DC output accuracy, 5.1μVRMS noise (10Hz–100kHz), and 100mV max dropout at full load. It operates from 1.7V to 5.5V input and supports nine fixed output voltages (1.2V–5.0V) for power rail generation in high-fidelity audio and ADAS domain controllers.
For engineers reviewing the MAX25302AATD/V+ datasheet, MAX25302AATD/V+ pinout, MAX25302AATD/V+ application, or MAX25302AATD/V+ equivalent, this device is selected for low-noise, AEC-Q100-compliant power delivery where precise voltage selection, thermal robustness (−40°C to +125°C), and reverse-current protection are mandatory.
Technical Context
The MAX25302AATD/V+ implements a pMOS-based LDO architecture with internal 0.6V reference and voltage-select logic decoding SELA/SELB states at enable assertion. Its soft-start rate is programmable via external BYP capacitor (1nF–100nF), and it features active reverse-current protection triggered when VIN falls 10mV below VOUT.
Protection includes foldback current limiting (2.2A–3.4A trip), thermal shutdown at +165°C (recovery at +150°C), and output-to-input reverse-current blocking. The regulator remains stable with ≥8μF X5R/X7R ceramic output capacitance and requires no external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A maximum continuous - supports high-current digital loads like SoC I/O rails or ADC analog supplies without derating. |
| Output Noise | 5.1μVRMS (10Hz–100kHz) - enables use in high-resolution data-acquisition systems where noise floor directly impacts ENOB. |
| Dropout Voltage | 100mV max at 2A - allows operation with minimal headroom, e.g., 3.3V output from 3.4V battery supply in start-stop automotive conditions. |
| DC Accuracy | ±1% over line/load/temperature - ensures consistent voltage regulation across automotive temperature range without calibration. |
| PSRR | 70dB at 10kHz - suppresses switching noise from adjacent DC-DC converters feeding the same board. |
| Quiescent Current | 1.3mA at no load - independent of dropout voltage, enabling low-power always-on domains. |
| Shutdown Current | <1.5μA - reduces standby power in ignition-off vehicle modules. |
Pinout & Package
MAX25302AATD/V+ is housed in a 3mm × 3.5mm, 14-pin TDFN package with exposed thermal pad (EP). The package meets AEC-Q100 Grade 0 requirements and requires PCB thermal vias under EP for junction-to-ambient θJA = 41°C/W (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 11–14 | IN | Input supply pins - parallel connection reduces IR drop and improves current sharing; must be bypassed with 22μF ceramic to GND. |
| 5 | GND | Ground reference - connects IN/OUT capacitor grounds; critical for noise and stability performance. |
| 6 | EN | Enable control - active-high logic; tied to VIN for always-on operation or driven by MCU GPIO for sequenced power-up. |
| 7 | SELA | Output voltage select A - Hi-Z/IN/GND state selects one of three groups of output voltages per Table 1. |
| 8 | SELB | Output voltage select B - combined with SELA, determines exact VOUT among nine options (e.g., SELA=Hi-Z, SELB=GND → 1.8V). |
| 9 | OUTS | Remote output sense - connects directly to load point to compensate for PCB trace resistance and maintain ±1% accuracy at load. |
| 10 | BYP | Bypass node - sets soft-start slew rate and filters reference noise; 47nF typical value yields ~5V/ms startup. |
| EP | Exposed Pad | Thermal and electrical ground - must be soldered to solid GND plane with ≥4 thermal vias for thermal reliability in automotive ambient. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-selectable outputs | Nine factory-configurable voltages (1.2V–5.0V) eliminate need for external feedback resistors and reduce BOM count. |
| Reverse-current protection | Active blocking when VIN < VOUT −10mV prevents backfeed from output caps during cold-crank or battery disconnect events. |
| Stability with low COUT | Operates stably with only 8μF total output capacitance - enables compact designs using small-case X5R ceramics. |
| Power-OK signaling | Not applicable to MAX25302A variant - POK is exclusive to MAX25302B; MAX25302AATD/V+ uses OUTS for precision regulation only. |
| AEC-Q100 qualified | Grade 0 (−40°C to +125°C) qualification confirms suitability for engine bay and ADAS ECU applications. |
Applications
| Automotive ADAS Camera Modules | High-End Automotive Audio DSP Power |
|---|---|
|
Use Scenario: Powering image signal processors and CIS sensors in surround-view camera ECUs operating under wide battery voltage swings (6V–16V). IC Role / Device Role / Timing Role: Primary 1.8V/3.3V analog and I/O rail LDO supplying noise-sensitive pixel processing blocks. Use Value: 5.1μVRMS noise and 70dB PSRR prevent clock spurs from corrupting image data; ±1% accuracy maintains sensor gain calibration across temperature. |
Use Scenario: Generating clean 1.2V core and 3.3V I/O supplies for automotive-grade DSPs in premium infotainment head units. IC Role / Device Role / Timing Role: Low-noise post-regulator after buck converter, delivering stable voltage to audio codec and amplifier interfaces. Use Value: 100mV dropout enables operation during cold-crank (6.5V battery); reverse-current protection avoids discharge of output caps into failing input rails. |
| Automotive Radar Transceiver Bias Rails | Industrial Data-Acquisition Front-Ends |
|
Use Scenario: Providing regulated 2.5V and 5.0V supplies to RF transceivers and PLL synthesizers in 77GHz radar modules. IC Role / Device Role / Timing Role: Precision analog rail generator with remote sensing (OUTS) to compensate for PCB voltage drop in high-current RF sections. Use Value: OUTS connection ensures ±1% regulation at IC pins despite >100mΩ trace resistance; thermal shutdown protects against antenna mismatch faults. |
Use Scenario: Powering 24-bit delta-sigma ADCs and precision op-amps in portable test equipment requiring ultra-low noise and drift. IC Role / Device Role / Timing Role: Reference-grade LDO supplying analog front-end circuitry where PSRR and noise define effective resolution. Use Value: 5.1μVRMS noise directly limits system noise floor; 70dB PSRR at 10kHz rejects switching artifacts from nearby isolated DC-DCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7B8750QKVURQ1 | 500mA output, 18μVRMS noise, 300mV dropout at 500mA, 5-pin VSON package | Lower current and higher noise limit use to sub-1A analog rails; lacks OUTS and SEL pins | Select when lower cost and smaller footprint outweigh need for 2A output and remote sensing. |
| NCP163AMX330TBG | 300mA output, 12μVRMS noise, 170mV dropout at 300mA, SOT-23-5 package | Not AEC-Q100 qualified; no thermal or overcurrent protection; unsuitable for automotive under-hood use | Consider only for non-automotive industrial or consumer applications with <300mA load and no safety requirements. |
Compared with TPS7B8750QKVURQ1 and NCP163AMX330TBG, the MAX25302AATD/V+ uniquely delivers 2A output with ±1% accuracy, remote sensing, and AEC-Q100 Grade 0 qualification in a single 14-pin TDFN - making it the only option for high-current, safety-critical automotive LDO applications requiring pin-selectable voltage and reverse-current blocking.
Availability
MAX25302AATD/V+ is available at Aetrix Electronics and suitable for automotive ADAS systems, high-end audio subsystems, and industrial data-acquisition platforms requiring stable component supply, long lifecycle support, and AEC-Q100 compliance.
Supply support for MAX25302AATD/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, communications, and healthcare markets.
The MAX25302A series belongs to Analog Devices' automotive power management portfolio, designed specifically for low-noise, high-reliability LDO applications in ADAS, infotainment, and body electronics where AEC-Q100 compliance and precision regulation are mandatory.
FAQ
What output voltages does the MAX25302AATD/V+ support?
The MAX25302AATD/V+ supports nine pin-selectable output voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5.0V. Selection is performed using the SELA and SELB pins at power-up, with combinations defined in the MAX25302A Output Configuration Table. No external resistors are required - all configurations are implemented internally within the MAX25302AATD/V+.
Does the MAX25302AATD/V+ include reverse-current protection?
Yes, the MAX25302AATD/V+ includes active output-to-input reverse-current protection. It detects when VIN falls below VOUT by 10mV and immediately disables the pMOS pass element, preventing backfeed from output capacitors into a failing or disconnected input source - a critical feature for automotive cold-crank and battery-disconnect scenarios.
What is the minimum output capacitance required for stable operation of the MAX25302AATD/V+?
The MAX25302AATD/V+ requires a minimum of 8μF total output capacitance for guaranteed stability. This includes voltage- and temperature-de-rated values of X5R or X7R ceramic capacitors. A typical design uses a single 22μF, 6.3V X5R ceramic capacitor placed close to the OUT and GND pins.
Is the MAX25302AATD/V+ compatible with remote voltage sensing?
Yes, the MAX25302AATD/V+ includes an OUTS (output sense) pin that enables Kelvin-style remote sensing. Connecting OUTS directly to the load point compensates for voltage drop across PCB traces and ensures ±1% regulation accuracy at the actual load, not just at the IC's OUT pin.
What thermal management is required for the MAX25302AATD/V+ in automotive applications?
The MAX25302AATD/V+ uses a 3mm × 3.5mm TDFN package with an exposed thermal pad (EP). For reliable operation at 2A in automotive ambient (up to +105°C), the EP must be soldered to a dedicated GND plane with ≥4 thermal vias (0.3mm diameter) connecting to inner and bottom layer copper. This achieves θJA ≈ 41°C/W on a 4-layer board, keeping junction temperature within the +150°C limit.
MAX25302AATD/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.3V @ 2A
- Current - Output:
- 2A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 40dB (1kHz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Current Limit, Reverse Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TDFN (3x3.5)
MAX25302AATD/V+ FAQ
1.How can I place an order for MAX25302AATD/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX25302AATD/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 MAX25302AATD/V+ reliable?
The price and inventory of MAX25302AATD/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX25302AATD/V+ is usually 5 days.
3.What payment methods are accepted for MAX25302AATD/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX25302AATD/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX25302AATD/V+?
MAX25302AATD/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX25302AATD/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 MAX25302AATD/V+?
For technical support, including MAX25302AATD/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX25302AATD/V+ requirements.
6.How does Aetrix verify that MAX25302AATD/V+ is sourced from the original manufacturer or authorized distributors?
All MAX25302AATD/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 MAX25302AATD/V+ meets industry standards.
7.What is the process for return or replacement of MAX25302AATD/V+?
All MAX25302AATD/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX25302AATD/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 MAX25302AATD/V+ part is unused and in its original packaging.
Return procedure for MAX25302AATD/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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