Analog Devices Inc./Maxim Integrated MAX882ESA+T

Overview

MAX882ESA+T 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 portable instruments.

For engineers reviewing the MAX882ESA+T datasheet, MAX882ESA+T pinout, MAX882ESA+T application, or MAX882ESA+T equivalent, key selection criteria include its 3.3V fixed output with Dual Mode™ adjustability (1.25V–11V), 2.7V–11.5V input range, SOIC-8 package with dual GND pins for thermal management, and integrated LBI/LBO comparator for undervoltage monitoring in space-constrained, low-power systems.

Technical Context

The MAX882ESA+T uses an internal 1.20V reference and error amplifier to regulate output via a p-channel MOSFET pass transistor-eliminating base-drive losses inherent in bipolar regulators. Its Dual Mode™ operation selects between fixed 3.3V output (SET = GND) or adjustable output (SET = external resistor divider) based on a 65mV threshold at the SET pin.

Standby mode is implemented via an active-low STBY comparator input referenced to 1.20V, enabling undervoltage lockout while preserving bias circuitry and LBO functionality. Reverse-current protection activates when VIN falls 6mV below VOUT, limiting backflow to ≤50µA at 3.3V output, and thermal shutdown engages at +160°C with 10°C hysteresis.

Key Specifications

Pinout & Package

MAX882ESA+T is housed in an 8-pin SOIC package with enhanced thermal performance (θ_JB = 53°C/W), rated for 1.5W power dissipation. Both GND pins (pins 3 and 6) serve as electrical ground and thermal heatsinks-requiring connection to large copper pads or planes for reliable 200mA operation at high 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 TPS76333DBVR and MCP1702T-3302E/MB, the MAX882ESA+T provides superior system-level integration-combining 200mA capability, 7µA standby, reverse-current blocking, and precision low-battery detection in a thermally robust SOIC-8, making it optimal for compact, long-life battery systems requiring autonomous health monitoring.

Availability

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

Supply support for MAX882ESA+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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.

The MAX882ESA+T belongs to Maxim's micropower LDO regulator family, designed specifically for battery-powered portable instrumentation where ultra-low quiescent current, thermal resilience, and integrated power-monitoring functions are critical.

FAQ

What is the maximum continuous output current of the MAX882ESA+T?

The MAX882ESA+T delivers 200mA continuously at junction temperatures up to +125°C when used with adequate PCB copper area for heat dissipation. At higher ambient temperatures or reduced thermal relief, output current must be derated per Figure 5a in the datasheet. Peak currents up to 250mA are permissible for short durations if power dissipation remains within the 1.5W SOIC package limit.

Does the MAX882ESA+T support adjustable output voltage?

Yes, the MAX882ESA+T supports adjustable output from 1.25V to 11V using external resistors connected to the SET pin. When SET voltage exceeds 150mV, the device enters adjustable mode and regulates V_OUT = 1.20V × (1 + R1/R2). The internal 3.3V fixed output is selected only when SET is tied to GND (voltage < 65mV).

How does standby mode function on the MAX882ESA+T?

In standby mode, the MAX882ESA+T disconnects the IN-to-OUT path by turning off the p-channel pass transistor, driving V_OUT to 0V, while keeping the 1.20V reference, LBI/LBO comparator, and bias circuitry fully operational. This draws only 7µA typical quiescent current and preserves battery-state awareness-unlike shutdown modes that disable all functions.

What thermal design considerations apply to the MAX882ESA+T in SOIC-8?

The MAX882ESA+T's SOIC-8 package has dual GND pins (3 and 6) serving as thermal conduction paths. For reliable 200mA operation at +85°C ambient, both GND pins must connect to a minimum 1cm² copper pad (per Figure 4). Without proper heatsinking, power dissipation is limited to ~0.8W instead of the rated 1.5W, risking thermal shutdown under load.

Can the MAX882ESA+T be used with lithium-ion battery input?

Yes, the MAX882ESA+T accepts input voltages from 2.7V to 11.5V, covering the full discharge curve of single-cell Li-ion (3.0V–4.2V) and Li-polymer batteries. Its 220mV dropout ensures regulation down to 3.52V input at 200mA, allowing >95% usable battery capacity. Reverse-current protection also prevents battery drain when the cell voltage collapses below V_OUT.