Analog Devices Inc./Maxim Integrated MAX883CSA+

Overview

The MAX883CSA+ from Maxim Integrated is a 5V fixed-output, low-dropout linear regulator with p-channel MOSFET pass element, delivering up to 200mA output current at junction temperatures up to +125°C, featuring 11µA typical quiescent current, 220mV dropout at 5V/200mA, and shutdown current <1µA - deployed in battery-powered portable instruments and cellular handsets.

For engineers reviewing the MAX883CSA+ datasheet, MAX883CSA+ pinout, MAX883CSA+ application, or MAX883CSA+ equivalent, key selection criteria include its 5V fixed output (non-adjustable unless reconfigured), SOIC-8 package thermal performance (1.5W rating), dual-mode feedback architecture, and OFF-mode logic-level control for ultra-low-power system sleep states.

Technical Context

The MAX883CSA+ uses an internal 1.20V reference and error amplifier to regulate output via a p-channel MOSFET pass transistor - eliminating base-current losses inherent in bipolar regulators. Its Dual Mode™ comparator selects between internal fixed-voltage feedback (SET ≤ 65mV) and external adjustable feedback (SET > 150mV).

Shutdown is implemented as a logic-level active-low OFF input that disables all bias circuitry including reference and LBI/LBO comparators, reducing supply current below 1µA. Reverse-current protection activates when VIN falls 6–20mV below VOUT, clamping reverse conduction to <0.01µA at 3.0V output.

Key Specifications

Pinout & Package

MAX883CSA+ is housed in an 8-pin SOIC package with exposed thermal pad (1.5W power dissipation rating). GND pins (pins 3 and 6) serve dual roles: electrical ground reference and primary heat conduction path - must be soldered to large copper planes for thermal integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS76350DBVR and MCP1703T-5002E/MB, the MAX883CSA+ delivers superior thermal robustness (1.5W SOIC), integrated system supervision (LBO/LBI), and true 200mA capability at low dropout - making it optimal for industrial portable equipment requiring reliability across temperature and fault conditions.

Availability

MAX883CSA+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial handheld meters, wireless sensor nodes, and smart energy meters requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for MAX883CSA+ 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 precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.

The MAX882/MAX883/MAX884 product line was engineered specifically for battery-powered portable electronics requiring micropower operation, low dropout, and integrated system supervision - targeting pagers, cellular handsets, and portable instrumentation.

FAQ

What is the output voltage tolerance of the MAX883CSA+ over temperature and load?

The MAX883CSA+ delivers 5.00V ±2.5% (4.75V to 5.25V) across 0°C to +70°C ambient temperature and 100µA to 250mA load current, per its C-grade specification. At -40°C to +85°C (E-grade), tolerance widens to ±3.5% (4.65V to 5.35V). This is achieved using factory-trimmed internal resistive feedback, not external components.

Does the MAX883CSA+ support adjustable output voltage, and how is it configured?

Yes, the MAX883CSA+ supports adjustable output from 1.25V to 11V via its Dual Mode™ architecture. To enable adjustment, disconnect SET from GND and connect an external resistor divider between OUT and GND, with the midpoint feeding SET. The output follows V_OUT = 1.20V × (1 + R1/R2), where R2 connects to GND. SET must exceed 150mV to activate this mode.

What is the thermal performance difference between the MAX883CSA+ and standard SOIC-8 regulators?

The MAX883CSA+ uses a high-power SOIC-8 package rated at 1.5W - more than triple the 0.47W rating of standard SOIC-8. Its thermal resistance θ_JB is 53°C/W versus ~110°C/W for plastic DIP, enabling 200mA operation at higher (V_IN−V_OUT) differentials and elevated ambient temperatures when GND pins are properly heatsunk to PCB copper.

How does reverse-current protection work in the MAX883CSA+, and what is its activation threshold?

The MAX883CSA+ monitors V_OUT − V_IN and disables the p-channel pass transistor when this differential exceeds +6mV (typical) or +20mV (max). This prevents backfeed from output to input during battery swap or input collapse. Reverse leakage remains <0.01µA at 3.0V output - critical for multi-supply systems and energy-harvesting nodes.

Can the MAX883CSA+ be used in systems requiring low-battery monitoring, and how is it implemented?

Yes, the MAX883CSA+ integrates a precision low-battery comparator with 1.20V reference and 7mV hysteresis. Connect a resistor divider from IN to GND, feeding the junction to LBI. When LBI falls below 1.20V, open-drain LBO pulls low - usable to trigger MCU interrupts or LED indicators. LBO remains functional in standby but is undefined in OFF mode.