Analog Devices Inc./Maxim Integrated MAX1976AETT160+

Overview

MAX1976AETT160+ from Maxim Integrated is a low-dropout linear regulator with preset 1.6V output, delivering guaranteed 300mA continuous current from 1.62V–3.6V input, featuring 100mV dropout at full load, ±0.5% output voltage accuracy, and a 70ms active-low open-drain RESET flag-designed for power management in battery-powered handheld computing and mobile communications systems.

For engineers reviewing the MAX1976AETT160+ datasheet, MAX1976AETT160+ pinout, MAX1976AETT160+ application, or MAX1976AETT160+ equivalent, key selection criteria include input voltage range (1.62V–3.6V), reset delay timing (70ms), thermal shutdown threshold (+165°C), ground current behavior in dropout (70µA), and TDFN-6 package compatibility with high-density PCB layouts.

Technical Context

The MAX1976AETT160+ integrates a p-channel MOSFET pass transistor (R_DS(ON) = 0.33Ω) enabling low dropout and supply current independent of load or dropout voltage. Its error amplifier compares an internal reference against feedback from a fixed internal divider to regulate output voltage with ±0.5% accuracy across load, line, and temperature.

RESET functionality uses a precision comparator monitoring V_OUT against 82.5% of nominal voltage, asserting low for ≥70ms after regulation is achieved and deasserting immediately upon undervoltage or shutdown. Thermal protection activates at +165°C with 15°C hysteresis, enabling pulsed operation under sustained overload.

Key Specifications

Pinout & Package

MAX1976AETT160+ is housed in a 6-pin TDFN package (3mm × 3mm, 0.8mm height) with exposed paddle (EP) for thermal dissipation. Pin 1 is IN; Pin 2 is GND; Pin 3 is SHDN; Pin 4 is RESET; Pin 5 is I.C. (internally connected, connect to GND); Pin 6 is OUT.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A0516PDBVR and NCP1117ST16T3G, the MAX1976AETT160+ uniquely balances 300mA capability, 100mV dropout, 70ms RESET, and 3mm×3mm TDFN packaging-making it optimal for space-constrained, battery-sensitive applications where both performance and supervisory timing are critical.

Availability

MAX1976AETT160+ is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor hubs, industrial handheld terminals, medical point-of-care devices, and portable instrumentation requiring stable component supply with guaranteed long-term availability.

Supply support for MAX1976AETT160+ 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 demanding industrial, communications, and consumer applications.

The MAX1976A belongs to Maxim's low-input-voltage LDO family, engineered specifically for battery-powered portable electronics requiring ultra-low dropout, precise voltage regulation, and integrated power-good supervision.

FAQ

What is the exact output voltage of MAX1976AETT160+?

The MAX1976AETT160+ delivers a factory-trimmed, fixed 1.60V output voltage with ±0.5% accuracy over load, line, and temperature. This value is confirmed in the Selector Guide (suffix "160") and Electrical Characteristics table, and no external feedback components are required-ensuring consistent performance without calibration or layout dependency.

Does MAX1976AETT160+ support shutdown control, and what is its behavior?

Yes, MAX1976AETT160+ features an active-low SHDN pin (Pin 3). When pulled low, it reduces supply current to <1µA, disconnects OUT from IN, pulls OUT to GND via an internal 1.5kΩ resistor, and forces RESET low. The turn-on delay from SHDN high to regulated OUT is 90µs-verified in the Electrical Characteristics table and Typical Operating Characteristics (Figure MAX1963/76 toc13).

What is the RESET output timing specification for MAX1976AETT160+?

The MAX1976AETT160+ asserts its open-drain RESET output low for a guaranteed minimum of 70ms after V_OUT reaches regulation, with a typical value of 100ms and maximum of 160ms. It deasserts immediately if V_OUT falls below 82.5% of nominal voltage or if SHDN is pulled low-data confirmed in the RESET Output section of the Electrical Characteristics table.

What package type and dimensions does MAX1976AETT160+ use?

MAX1976AETT160+ uses a 6-pin TDFN package measuring 3mm × 3mm with 0.8mm maximum height and an exposed thermal pad (EP). This is explicitly stated in the Ordering Information table and Package Information section, and matches the "T633+2" package code (Outline No. 21-0137, Land Pattern No. 90-0058) per Maxim's official documentation.

How does MAX1976AETT160+ handle thermal overload conditions?

MAX1976AETT160+ incorporates thermal-overload protection that disables the pass transistor when junction temperature exceeds +165°C. After cooling by 15°C (to ~+150°C), the device resumes regulation-resulting in pulsed output under continuous overload. This behavior is specified in the Thermal Protection section and validated in Absolute Maximum Ratings (Junction Temperature = +150°C continuous).