Analog Devices Inc./Maxim Integrated MAX25302AATD/V+T

Overview

MAX25302AATD/V+T from Analog Devices is a 2A automotive-grade low-noise LDO linear regulator with pin-selectable output voltages (1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, or 5.0V), 5.1μVRMS output noise (10Hz–100kHz), ±1% DC accuracy over load/line/temperature, and 100mV max dropout at 2A load. It operates from 1.7V to 5.5V input and is used in high-resolution data-acquisition systems requiring ultra-low-noise power rails.

For engineers reviewing the MAX25302AATD/V+T datasheet, MAX25302AATD/V+T pinout, MAX25302AATD/V+T application, or MAX25302AATD/V+T equivalent, key selection criteria include AEC-Q100 qualification, 14-pin TDFN package thermal performance, SELA/SELB voltage configuration logic, and reverse-current protection for automotive power sequencing.

Technical Context

The MAX25302AATD/V+T implements a pMOS-based LDO architecture with integrated soft-start control via the BYP capacitor, enabling programmable output slew rate (e.g., 5V/ms with 10nF). Its feedback reference is fixed at 0.6V, and output voltage selection is determined at power-up by the logic states of SELA and SELB pins-each configured as Hi-Z, GND, or IN.

It features active reverse-current protection triggered when VIN falls 10mV below VOUT, thermal shutdown at +165°C (with hysteresis down to +150°C), and current limiting at 2.8A (typ). The device maintains stability with ≥8μF output capacitance and supports >70dB PSRR at 10kHz, making it suitable for noise-sensitive analog signal chains.

Key Specifications

Pinout & Package

MAX25302AATD/V+T is housed in a 3mm × 3.5mm, 14-pin TDFN package with exposed pad (EP) for thermal dissipation. The package is RoHS-compliant and automotive-qualified (AEC-Q100).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPS7B8750QKVURQ1 and NCP163AMX330TBG, the MAX25302AATD/V+T uniquely delivers 2A current, nine pin-selectable voltages, remote sensing, and full AEC-Q100 Grade 1 compliance-making it the only option for high-fidelity, thermally demanding automotive analog power rails.

Availability

MAX25302AATD/V+T is available at Aetrix Electronics and suitable for automotive ADAS sensor power, high-end audio DAC supply, and industrial data-acquisition front-end applications requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.

Supply support for MAX25302AATD/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, headquartered in Wilmington, MA.

The MAX25302A series belongs to Analog Devices' automotive power management portfolio, designed specifically for noise-sensitive, safety-critical vehicle subsystems including radar, camera, and infotainment electronics.

FAQ

What output voltages does the MAX25302AATD/V+T support?

The MAX25302AATD/V+T supports nine fixed output voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5.0V. These are selected at power-up using the logic states of the SELA and SELB pins, as defined in the MAX25302A Output Configuration Table. No external resistors are needed-this distinguishes the MAX25302AATD/V+T from the adjustable MAX25302B variant.

Does the MAX25302AATD/V+T include reverse-current protection?

Yes, the MAX25302AATD/V+T includes active reverse-current protection. When the input voltage drops below the output voltage by 10mV, the internal pMOS pass device is disabled, blocking reverse current flow from VOUT to VIN. This feature prevents backfeed in automotive systems during battery transients or multi-supply sequencing, and is confirmed in the Absolute Maximum Ratings and Detailed Description sections of the datasheet.

What is the purpose of the OUTS pin on the MAX25302AATD/V+T?

The OUTS (Output Sense) pin on the MAX25302AATD/V+T provides remote voltage sensing to compensate for IR drop across PCB traces between the regulator output and the load. By connecting OUTS directly to the load's power input, the MAX25302AATD/V+T closes the feedback loop at the point of use-ensuring ±1% regulation accuracy is maintained even with significant trace resistance. This is essential for precision analog circuits like ADCs and sensors.

Can the MAX25302AATD/V+T operate with a 1.7V input voltage?

Yes, the MAX25302AATD/V+T is fully specified to operate with an input voltage as low as 1.7V, provided the output voltage is set ≤1.6V (e.g., 1.5V or 1.2V) to maintain required headroom. At 1.7V input, the dropout voltage is up to 300mV (max) at 2A load, meaning it can regulate a 1.5V output with 200mV margin. This capability is validated in the Electrical Characteristics table under "Dropout Voltage (Note 3)".

Is the MAX25302AATD/V+T qualified for automotive applications?

Yes, the MAX25302AATD/V+T is explicitly qualified per AEC-Q100 Grade 1 (−40°C to +125°C) and carries the "/V" suffix denoting automotive qualification. It includes built-in thermal shutdown with hysteresis, overcurrent protection, and reverse-current blocking-all required for under-hood and safety-critical automotive use. The device is packaged in a lead(Pb)-free, RoHS-compliant 14-pin TDFN with exposed pad for enhanced thermal reliability.