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, 11µA typical quiescent current, and 7µA standby mode. It delivers stable 3.3V regulation for battery-powered portable instruments and solar-powered devices requiring ultra-low IQ and reverse-current protection.

For engineers reviewing the MAX882ESA datasheet, MAX882ESA pinout, MAX882ESA application, or MAX882ESA equivalent, key selection criteria include dropout voltage at 200mA (320mV @ 3.3V), standby-mode functionality (7µA, output disabled but LBI comparator active), Dual Mode™ adjustable operation (1.25V–11V), thermal shutdown at +160°C, and SOIC-8 package with 1.5W power dissipation rating.

Technical Context

The MAX882ESA employs a 1.20V internal reference and error amplifier driving a p-channel MOSFET pass transistor-eliminating base-current losses inherent in bipolar regulators and enabling consistent 11µA IQ across load and dropout conditions. Its Dual Mode™ architecture uses a 65mV SET-pin threshold to auto-select between internal fixed 3.3V feedback and external resistor-adjustable regulation.

Standby mode is implemented via an active-low STBY comparator input referenced to the 1.20V bandgap, allowing undervoltage lockout configuration while preserving biasing circuitry-including the low-battery comparator (LBI/LBO) and reference-unlike the OFF mode used in MAX883/MAX884. Reverse-current protection activates when V_IN falls 6mV below V_OUT, limiting backfeed to ≤50µA at 5V.

Key Specifications

Pinout & Package

MAX882ESA is housed in an 8-pin SOIC package rated for 1.5W continuous power dissipation (derated above +70°C at 18.75mW/°C), featuring dual GND pins (pins 3 & 6) that serve as electrical ground connections and thermal conduction paths to PCB copper planes.

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 MCP1702T-3302E/MB, the MAX882ESA uniquely combines industrial temperature range, integrated low-battery detection with functional standby mode, reverse-current blocking, and 200mA capability in a thermally enhanced SOIC-8-making it optimal for long-life, feature-rich portable instrumentation.

Availability

MAX882ESA is available at Aetrix Electronics and suitable for portable medical sensors, solar-powered environmental monitors, handheld test equipment, industrial data loggers, and battery-backed real-time clock modules requiring stable component supply across extended temperature ranges and multi-year production cycles.

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, communications, and consumer applications.

The MAX882ESA belongs to Maxim's micropower LDO regulator family, designed specifically for battery longevity in portable and energy-harvesting systems-emphasizing ultra-low quiescent current, reverse-current blocking, and integrated power-monitoring features.

FAQ

What is the maximum continuous output current for the MAX882ESA?

The MAX882ESA delivers up to 200mA continuously under specified thermal conditions. At full load and 3.3V output, its 320mV dropout requires minimum input of 3.62V. Actual achievable current depends on PCB copper area, ambient temperature, and input-output differential-see Figure 5a in the datasheet for safe operating regions. The MAX882ESA maintains this rating across its full -40°C to +85°C industrial temperature range.

How does the STBY pin function differently from the OFF pin in other MAX88x regulators?

The STBY pin on the MAX882ESA is a comparator input referenced to the internal 1.20V bandgap, enabling configurable undervoltage lockout while keeping the LBI comparator, reference, and bias circuitry active-drawing only 7µA. In contrast, the OFF pin on MAX883/MAX884 is a logic-level input that disables all circuitry (<1µA IQ) but renders LBO undefined. This makes MAX882ESA ideal for applications needing battery monitoring during sleep.

Can the MAX882ESA be used in adjustable-output mode, and what is the output voltage range?

Yes, the MAX882ESA supports adjustable-output mode via the SET pin. When SET voltage exceeds 150mV, it enters Dual Mode™ adjustable operation, allowing output voltages from 1.25V to 11.0V using two external resistors per the equation V_OUT = 1.20V × (1 + R1/R2). The 1.20V SET reference has ±40mV tolerance, and SET input bias current is <50nA-enabling high-value resistors to minimize power loss.

What thermal design considerations apply to the MAX882ESA's SOIC-8 package?

The MAX882ESA uses a high-power SOIC-8 package rated for 1.5W dissipation (derated above +70°C). Its dual GND pins (3 & 6) serve as thermal conduction paths-requiring soldering to ≥1cm² copper pad or internal ground plane. Without adequate heatsinking, junction temperature can exceed +150°C at 200mA with >2V input-output differential. Figure 4 in the datasheet provides pad-area vs. power-dissipation curves for still-air conditions.

Does the MAX882ESA provide reverse-current protection, and how does it work?

Yes, the MAX882ESA includes reverse-current protection that activates when V_IN falls 6mV (typ) below V_OUT. It switches substrate and power bus connections to the more positive rail, then turns off the p-channel pass transistor-limiting reverse current to ≤50µA at 5V output. This protects batteries and energy harvesters from discharging back through the regulator during input collapse or removal.