Analog Devices Inc./Maxim Integrated MAX8902BATA/V+

Overview

MAX8902BATA/V+ from Maxim Integrated is an automotive-grade, adjustable-output low-noise LDO regulator delivering up to 500mA output current with 16µVRMS noise (10Hz–100kHz), 100mV max dropout at full load, and ±1.5% output accuracy over load, line, and temperature. It operates across 1.7V–5.5V input and supports 0.6V–5.3V output via external feedback resistors, serving as a precision power supply for RF-sensitive analog circuitry in infotainment and ADAS modules.

For engineers reviewing the MAX8902BATA/V+ datasheet, MAX8902BATA/V+ pinout, MAX8902BATA/V+ application, or MAX8902BATA/V+ equivalent, key selection criteria include its automotive qualification (-40°C to +125°C), integrated POK output for system monitoring, reverse-current protection, thermal shutdown at 165°C, and compatibility with low-ESR ceramic output capacitors.

Technical Context

The MAX8902BATA/V+ implements a pMOS pass transistor architecture enabling ultra-low dropout and inherent reverse-current blocking without external components. Its feedback loop references a stable 0.6V internal bandgap, allowing precise output setting via external resistor dividers while maintaining 92dB PSRR at 5kHz and 85dB at 10kHz.

It integrates programmable soft-start via the BYP pin (0.001µF–0.1µF capacitor sets slew rate), open-drain POK output asserting low when VOUT ≥ 91% of regulation, and comprehensive protection including 700mA short-circuit limiting, thermal cycling between 150°C and 165°C, and IN-to-OUT reverse voltage detection at 10mV.

Key Specifications

Pinout & Package

MAX8902BATA/V+ is housed in an 8-pin, 2mm × 2mm × 0.8mm TDFN package with exposed paddle (EP), optimized for automotive thermal performance on PCBs with ground-plane vias.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A4701RGWR and ADM7172ACPZ-R7, the MAX8902BATA/V+ uniquely combines AEC-Q100 qualification, integrated POK, reverse-current blocking, and 2mm × 2mm footprint - making it the only drop-in solution for safety-critical automotive LDO applications demanding compact size, functional safety signaling, and robust fault handling.

Availability

MAX8902BATA/V+ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera systems, and telematics modules requiring stable component supply with guaranteed long-term lifecycle support.

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, designs high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets.

The MAX8902 family targets automotive power management, delivering low-noise, high-accuracy LDOs with integrated protection and monitoring features for mission-critical ECU subsystems.

FAQ

What is the operating temperature range for MAX8902BATA/V+?

The MAX8902BATA/V+ is qualified for automotive use with a guaranteed operating ambient temperature range of -40°C to +125°C, and junction temperature limits from -40°C to +150°C. This rating is validated per AEC-Q100 Grade 2 requirements and applies across all electrical specifications in the datasheet, including output accuracy, PSRR, and dropout voltage.

Does MAX8902BATA/V+ require an external resistor network to set output voltage?

Yes, the MAX8902BATA/V+ is an adjustable-output LDO that requires an external resistor divider connected between OUT, FB, and GND to set the output voltage. The FB pin regulates to 0.600V ±0.009V, so VOUT = 0.6 × (1 + R1/R2). R2 should be ≤120kΩ to minimize error from FB input bias current, and both resistors must be stable across temperature.

How does the POK output function on MAX8902BATA/V+?

The POK (Power-OK) output on MAX8902BATA/V+ is an open-drain signal that asserts low when the regulated output reaches ≥91% of its nominal voltage. During startup, POK remains high-impedance until this threshold is crossed. It returns high-impedance if VOUT drops below 88% due to overload or shutdown, enabling reliable reset sequencing in automotive microcontrollers.

What capacitor values are required for stable operation of MAX8902BATA/V+?

MAX8902BATA/V+ requires a 10µF X5R or X7R ceramic capacitor at the IN pin and another 10µF low-ESR ceramic capacitor at the OUT pin. Additionally, a 0.01µF ceramic capacitor must be placed between BYP and OUT to achieve specified 16µVRMS noise performance and controlled startup slew rate. All capacitors must maintain rated capacitance under DC bias and temperature extremes.

Is reverse-current protection active in MAX8902BATA/V+?

Yes, MAX8902BATA/V+ includes integrated reverse-current protection that automatically disables the pass element when VIN falls 10mV below VOUT, preventing backflow from the output capacitor into the input supply. This feature eliminates the need for an external blocking diode in battery-backed or hot-swap configurations common in automotive domain controllers.