Analog Devices Inc./Maxim Integrated MAX8527EUD+T

Overview

MAX8527EUD+T from Maxim Integrated is a 2A, low-dropout linear regulator with PMOS pass transistor, 1.425V–3.6V input range, 0.5V–(VIN−0.2V) adjustable output, ±1.4% accuracy over 0°C to +85°C, and integrated power-OK (POK) output. It delivers stable voltage regulation for high-current post-regulation in servers, optical modules, and base stations.

For engineers reviewing the MAX8527EUD+T datasheet, MAX8527EUD+T pinout, MAX8527EUD+T application, or MAX8527EUD+T equivalent, this page provides verified technical context, real-world transient response data (45mV deviation at 20mA→2A step), POK timing behavior (50µs fault delay), dropout specification (200mV @ 2A), and package-aware thermal design guidance for TSSOP-14 with exposed pad.

Technical Context

The MAX8527EUD+T uses an internal p-channel MOSFET pass device with 50mΩ typical on-resistance, enabling stable operation down to 1.425V input without base-drive current penalties. Its feedback loop references a precision 500mV FB threshold with ±1.4% total error across load, line, and temperature.

It integrates logic-controlled shutdown (EN pin), soft-start limiting inrush, short-circuit protection (4A current limit), and thermal shutdown (trip at +165°C, restart at +150°C). The open-drain POK output asserts high when VOUT is within ±10% of nominal and includes 50µs hysteresis delay to prevent chatter during marginal conditions.

Key Specifications

Pinout & Package

The MAX8527EUD+T is housed in a 14-pin TSSOP package (5mm × 6.4mm footprint, 1.1mm profile) with exposed thermal pad soldered to PCB ground for optimal power dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS75225QPWPRQ1 and LT3080IDDPBF, the MAX8527EUD+T uniquely combines 2A capability, 200mV dropout, ±1.4% accuracy, and integrated POK in a single TSSOP-14 package - making it optimal for space-constrained, high-reliability digital systems requiring autonomous power-status reporting.

Availability

MAX8527EUD+T is available at Aetrix Electronics and suitable for server power delivery, optical transceiver biasing, and base station RF front-end applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX8527EUD+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

Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, communications, and computing applications.

The MAX8527EUD+T belongs to Maxim's high-current LDO family designed specifically for post-regulation in dense, thermally constrained systems where low dropout, fast transient response, and integrated status signaling are essential.

FAQ

What is the minimum input voltage required for stable operation of the MAX8527EUD+T?

The MAX8527EUD+T operates stably down to 1.425V input voltage, as specified in its absolute maximum ratings and electrical characteristics. Below this threshold, undervoltage lockout activates at 1.35V (typical), disabling regulation. This allows direct use with single-cell Li-ion batteries or low-voltage intermediate buses while maintaining ±1.4% output accuracy across temperature and load.

Does the MAX8527EUD+T require external components for basic operation?

Yes - the MAX8527EUD+T requires at minimum a 2.2µF ceramic capacitor between IN and GND, a 10µF ceramic capacitor between OUT and GND, two resistors for FB-based output voltage setting, and a pullup resistor on the POK pin. These are mandatory for stability, accuracy, and proper POK functionality; omitting any compromises regulation performance or fault reporting.

How does the POK output of the MAX8527EUD+T behave during startup and fault conditions?

The POK output of the MAX8527EUD+T remains low until VOUT reaches within ±10% of its nominal value, then transitions high with a 50µs delay to reject noise. During shutdown (EN = low), POK is forced low. If VOUT drifts outside tolerance due to overload or thermal fault, POK transitions low after the same 50µs delay - providing deterministic, glitch-immune power-status signaling for system controllers.

Can the MAX8527EUD+T be used with output voltages below 1.0V?

Yes - the MAX8527EUD+T supports output voltages as low as 0.5V using the FB pin and external resistor divider. Its 500mV feedback reference and ±1.4% accuracy ensure reliable regulation at sub-1V levels, making it suitable for modern low-voltage FPGA and ASIC core rails. Layout must minimize FB trace impedance to preserve accuracy.

What thermal considerations apply to the MAX8527EUD+T in a 2A application?

In a 2A application, the MAX8527EUD+T dissipates up to (VIN − VOUT) × 2A. With its TSSOP-14 package and exposed thermal pad, thermal resistance θ_JA is ~48°C/W when properly soldered to a 1-in² copper pad. To hold junction temperature ≤+150°C, ambient must stay ≤+70°C for a 0.2V dropout case - requiring adequate airflow or heatsinking in enclosed environments.