Analog Devices Inc./Maxim Integrated MAX8902BATA/V+T

Overview

MAX8902BATA/V+ from Maxim Integrated is an automotive-qualified, adjustable-output low-noise LDO regulator delivering 500mA output current with 16µVRMS noise (10Hz–100kHz), 92dB PSRR at 5kHz, and 100mV max dropout at full load. It operates from 1.7V to 5.5V input and supports 0.6V–5.3V output via external resistor divider, featuring power-OK (POK) output, thermal shutdown, reverse-current protection, and <1µA shutdown current - used in GPS navigation devices and automotive infotainment power rails.

For engineers reviewing the MAX8902BATA/V+ datasheet, MAX8902BATA/V+ pinout, MAX8902BATA/V+ application, or MAX8902BATA/V+ equivalent, key selection criteria include its AEC-Q100 qualified automotive temperature range (−40°C to +125°C), adjustable feedback architecture (FB pin), POK open-drain status signal, TDFN-8EP 2mm × 2mm package with exposed paddle, and guaranteed ±1.5% output accuracy across line/load/temperature.

Technical Context

The MAX8902BATA/V+ implements a pMOS pass transistor architecture enabling ultra-low dropout and inherent reverse-current blocking. Its feedback loop references a precision 0.600V internal bandgap (±0.009V tolerance), enabling stable regulation down to 0.6V with external resistive divider.

It integrates a dedicated open-drain POK output that asserts low when VOUT reaches ≥91% of nominal regulation voltage, and features programmable startup slew rate via BYP capacitor (0.001µF–0.1µF), with thermal shutdown activation at +165°C and hysteresis recovery at +150°C.

Key Specifications

Pinout & Package

MAX8902BATA/V+ is housed in an 8-pin, 2mm × 2mm × 0.8mm TDFN package with exposed paddle (EP), requiring solder connection to PCB ground plane for thermal management and EMI reduction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable-output LDO applications.

Compared with TPS7A8300RGRT and ADM7172ACPZ-R7, MAX8902BATA/V+ uniquely combines AEC-Q100 qualification, integrated POK, compact 2mm × 2mm footprint, and balanced noise/PSRR for cost-sensitive automotive subsystems where board space and functional safety signaling are constrained.

Availability

MAX8902BATA/V+ is available at Aetrix Electronics and suitable for automotive telematics, digital instrument clusters, and GPS navigation devices requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.

Supply support for MAX8902BATA/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

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and automotive markets.

The MAX8902 series was designed specifically for noise-sensitive, space-constrained automotive and portable electronics, emphasizing low dropout, ultra-low noise, and robust protection features in miniature packages.

FAQ

What is the maximum output current supported by the MAX8902BATA/V+?

The MAX8902BATA/V+ guarantees 500mA of continuous output current across its full operating temperature range (−40°C to +125°C). This rating is maintained even at minimum input-to-output headroom (100mV dropout), and the device includes 700mA short-circuit current limiting to protect against transient overloads. The MAX8902BATA/V+ delivers this current while maintaining ±1.5% output accuracy and 16µVRMS noise performance.

Does the MAX8902BATA/V+ include a power-good indicator?

Yes, the MAX8902BATA/V+ includes a dedicated open-drain Power-OK (POK) output pin. POK asserts low when the regulated output voltage reaches ≥91% of its nominal value and remains low during normal operation. It goes into high-impedance state during shutdown, startup, or output undervoltage - enabling precise power sequencing in automotive microcontroller systems. This feature is exclusive to the MAX8902B variant and is not present in the MAX8902A.

What package type and thermal requirements apply to the MAX8902BATA/V+?

The MAX8902BATA/V+ uses an 8-pin, 2mm × 2mm TDFN package with exposed paddle (T822+1). The exposed paddle (EP) must be soldered to a PCB ground plane with ≥4 thermal vias to achieve the specified θJA of 83.9°C/W. Failure to connect EP properly results in thermal derating and potential thermal shutdown under 500mA load. The device is rated for continuous operation up to +125°C ambient when mounted per JEDEC JESD51 standards.

How is the output voltage set on the MAX8902BATA/V+?

The MAX8902BATA/V+ uses an external resistor voltage divider connected to the FB (feedback) pin to set the output voltage from 0.6V to 5.3V. The internal reference is precisely 0.600V (±0.009V), so VOUT = 0.6 × (1 + R1/R2), where R2 connects between FB and GND, and R1 connects between OUT and FB. The datasheet recommends R2 ≤ 120kΩ to minimize error from FB input bias current (≤0.03µA at −40°C).

Is the MAX8902BATA/V+ qualified for automotive applications?

Yes, the MAX8902BATA/V+ is explicitly automotive-qualified: the "/V" suffix denotes AEC-Q100 Grade 2 qualification (−40°C to +125°C operating temperature), and it is manufactured in an automotive-grade process. It includes built-in protections critical for automotive use - thermal shutdown (+165°C trip, +150°C recovery), reverse-current blocking (trips at 10mV VIN–VOUT differential), and robust ESD tolerance. The "T" suffix indicates tape-and-reel packaging for automated assembly.