Analog Devices Inc./Maxim Integrated MAX882ESA+

Overview

MAX882ESA+ from Maxim Integrated is a -40°C to +85°C industrial-grade, 3.3V fixed-output, low-dropout linear regulator with p-channel MOSFET pass element, 200mA output current capability, 220mV dropout at 200mA (3.3V), and 11µA typical quiescent current. It features standby mode (7µA typ), reverse-current protection, thermal overload protection, and low-battery detection for battery-powered instrumentation.

For engineers reviewing the MAX882ESA+ datasheet, MAX882ESA+ pinout, MAX882ESA+ application, or MAX882ESA+ equivalent, this page delivers verified electrical parameters, validated SOIC-8 pin mapping, confirmed Dual Mode™ operation (fixed 3.3V or adjustable 1.25–11V), and real-world design constraints including thermal derating, safe operating area limits, and LBO/LBI comparator interface behavior.

Technical Context

The MAX882ESA+ uses an internal 1.20V reference and error amplifier to regulate output via a 1.1Ω p-channel MOSFET pass transistor-eliminating base-current losses inherent in bipolar regulators. Its Dual Mode™ architecture selects feedback path based on SET pin voltage (<65mV → internal fixed 3.3V; >150mV → external resistor-adjustable).

Standby mode (active-low STBY) disconnects OUT from IN while preserving biasing circuitry-including the 1.20V reference, low-battery comparator, and LBO open-drain output-enabling undervoltage lockout monitoring during power-gating. Thermal shutdown activates at +160°C with 10°C hysteresis, and foldback current limiting restricts output to 170mA under short-circuit (VOUT < 0.8V) or 430mA otherwise.

Key Specifications

Pinout & Package

MAX882ESA+ is housed in an 8-pin SOIC package rated for 1.5W power dissipation (θ_JB = 53°C/W), with GND pins (3 & 6) serving dual roles as electrical ground and thermal heatsinks-requiring connection to large copper pads or planes for reliable 200mA operation at elevated ambient temperatures.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-dropout, low-IQ linear regulator applications.

Compared with TPS76333QDBVRQ1 and MCP1700T-3302E/MB, the MAX882ESA+ uniquely integrates standby mode with active low-battery monitoring, reverse-current blocking, and thermal foldback-making it optimal for battery-backed systems requiring autonomous state awareness without host intervention.

Availability

MAX882ESA+ is available at Aetrix Electronics and suitable for portable medical sensors, solar-powered environmental loggers, industrial handheld terminals, and low-power IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX882ESA+ 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, automotive, and communications markets.

The MAX882ESA+ belongs to Maxim's micropower LDO family designed specifically for battery longevity in portable instrumentation-emphasizing ultra-low IQ, thermal robustness, and integrated system supervision (LBI/LBO, STBY) without external components.

FAQ

What is the maximum continuous output current of the MAX882ESA+ at +85°C ambient?

The MAX882ESA+ delivers up to 200mA continuously at +85°C ambient when mounted on a PCB with adequate copper pour on GND pins (3 & 6). Derating applies above +70°C: 1.5W package dissipation limit requires (VIN – VOUT) × IOUT ≤ 1.5W – (TJ – TA) × 18.75mW/°C. At TJ = +125°C and TA = +85°C, max power = 1.5W – 40°C × 18.75mW/°C = 0.75W-so at 3.3V output and 7V input, max current = 0.75W / 3.7V ≈ 203mA; actual limit is set by thermal shutdown at +160°C junction.

How does standby mode differ from shutdown in the MAX882ESA+?

Standby mode (activated by pulling STBY low) disables the output while keeping the 1.20V reference, low-battery comparator, and LBO output fully operational-drawing only 7µA typical. Shutdown is not implemented in the MAX882ESA+; it is exclusive to MAX883/MAX884 (via OFF pin). Thus, MAX882ESA+ has no sub-1µA shutdown state-its lowest quiescent current is 7µA in standby.

Can the MAX882ESA+ be used in adjustable-output configuration, and what is the minimum output voltage?

Yes, the MAX882ESA+ supports adjustable output from 1.25V to 11V using two external resistors on the SET pin. The minimum output is constrained by the internal 1.20V reference and SET threshold: VOUT = 1.20V × (1 + R1/R2). With R2 = 1.5MΩ (max recommended), R1 = 0 yields VOUT = 1.20V-but datasheet specifies 1.25V minimum due to tolerance and noise margin. Output accuracy is ±3% at 3.3V fixed; adjustable mode adds resistor tolerance impact.

What is the purpose of the LBI and LBO pins on the MAX882ESA+?

LBI (pin 8) is the low-battery comparator input, referenced to the internal 1.20V bandgap. When voltage at LBI falls below 1.20V ±40mV, the comparator triggers and pulls LBO (pin 1) low. LBO is an open-drain output requiring an external pull-up; it remains functional in standby mode-enabling battery monitoring even when the main output is disabled. This allows predictive power management without waking the host MCU.

Does the MAX882ESA+ require an input bypass capacitor, and what value is recommended?

Yes, the MAX882ESA+ requires an input bypass capacitor. Datasheet recommends 0.1µF to 10µF ceramic-0.1µF is sufficient for basic stability, but larger values (e.g., 1–2.2µF) improve line-transient response and supply-noise rejection, especially with high-impedance sources like batteries or solar cells. The capacitor must be placed close to the IN and GND pins; X7R or X5R dielectrics are preferred for stable capacitance across temperature.