Analog Devices Inc./Maxim Integrated MAX6766TTSD2+T

Overview

MAX6766TTSD2+T from Maxim Integrated is a 3.3V fixed-output, automotive-grade micropower linear regulator with integrated supervisor and active-low open-drain RESET output. It operates from 4V to 72V input, delivers up to 100mA, consumes only 31µA quiescent current, and features a 12.5ms fixed reset timeout (D2 suffix). It is designed for always-on automotive modules requiring reliable power sequencing and brownout detection.

For engineers reviewing the MAX6766TTSD2+T datasheet, MAX6766TTSD2+T pinout, MAX6766TTSD2+T application, or MAX6766TTSD2+T equivalent, key selection criteria include its AEC-Q100-compliant operation over –40°C to +125°C, 620mV dropout at 100mA (5V variant reference), push-pull/open-drain RESET configuration, TDFN-6 package thermal performance (θ_JA = 42°C/W multilayer), and enable-controlled startup without external hold circuitry.

Technical Context

The MAX6766TTSD2+T implements a single-enable (ENABLE) linear regulation architecture with internal 1.233V reference and precision bandgap-based feedback. Its supervisor block monitors OUT voltage against a fixed 2.888V reset threshold (S suffix) and asserts RESET for ≥12.5ms after recovery, using an internal timeout generator tied to the TIMEOUT pin (D2 = 12.5ms typical).

This device belongs to the MAX6765–MAX6774B family optimized for automotive battery-supplied systems: it integrates overtemperature shutdown (160°C trip), short-circuit protection, and 72V absolute maximum input rating - all while maintaining 31µA supply current across –40°C to +125°C ambient.

Key Specifications

Pinout & Package

MAX6766TTSD2+T is housed in a thermally enhanced 3mm × 3mm, 6-pin TDFN-EP package (package code T633+2) with exposed pad (EP) connected internally to GND. The EP must be soldered to PCB ground plane for optimal thermal dissipation (θ_JC = 9°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar micropower linear regulator with supervisor applications.

Compared with MAX6766TTSD2+T, MAX6765TTLD4+T offers higher output voltage and longer reset timeout but identical enable control and thermal performance; TLV70733PDQNR reduces quiescent current slightly but eliminates integrated supervision, increasing BOM count and design complexity for automotive safety-critical functions.

Availability

MAX6766TTSD2+T is available at Aetrix Electronics and suitable for automotive infotainment, body control modules, telematics units, and ADAS sensor hubs requiring stable component supply across extended temperature and high-reliability automotive programs.

Supply support for MAX6766TTSD2+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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.

The MAX6765–MAX6774B product line was engineered specifically for automotive battery-supplied systems needing ultra-low IQ, wide-input-voltage regulation, and integrated power-supply supervision - targeting always-on modules where reliability and thermal robustness are critical.

FAQ

What is the exact reset threshold voltage for MAX6766TTSD2+T?

The MAX6766TTSD2+T has a fixed reset threshold of 2.888V (S suffix), meaning RESET asserts when the 3.3V output falls below this value and remains asserted for ≥12.5ms after recovery. This threshold is trimmed and guaranteed across –40°C to +125°C, matching the S option in Table 2 of the datasheet.

Does MAX6766TTSD2+T require external components to set its 3.3V output?

No. MAX6766TTSD2+T provides a factory-trimmed 3.3V fixed output - no external resistors are needed. The SET pin is internally connected to GND for preset mode. External components required are only the 0.1µF IN bypass capacitor and 10µF OUT ceramic capacitor, as specified in the Typical Application Circuit.

Can MAX6766TTSD2+T be used in non-automotive industrial applications?

Yes. While AEC-Q100 qualified and optimized for automotive, MAX6766TTSD2+T's –40°C to +125°C operation, 72V input range, and 31µA quiescent current make it suitable for harsh-environment industrial controls, railway telemetry, and telecom remote units where wide VIN and low IQ are essential.

What is the thermal performance of MAX6766TTSD2+T on a standard PCB?

On a multilayer PCB, MAX6766TTSD2+T achieves θ_JA = 42°C/W and θ_JC = 9°C/W. With 100mA load and 14V input, power dissipation is ~1.07W; junction temperature rise is ~45°C above ambient - well within the 150°C absolute max limit, enabling full-load operation at +85°C ambient.

Is the RESET output of MAX6766TTSD2+T push-pull or open-drain?

The MAX6766TTSD2+T features an open-drain RESET output (per Pin Description and Functional Diagram), requiring an external pullup resistor to V_CC or µP VDD. This allows wired-OR connection with other reset sources and compatibility with varying logic voltage domains.