Analog Devices Inc./Maxim Integrated MAX6770TALD3+

Overview

MAX6770TALD3+ from Maxim Integrated is a micropower automotive-grade linear regulator with integrated supervisor, delivering 100mA at fixed 5.0V output (L-suffix), operating from 4V to 72V input, featuring 31µA quiescent current, 620mV dropout at 100mA, and a 50ms reset timeout (D3-suffix). It serves as primary power supply and system reset monitor in always-on vehicle modules.

For engineers reviewing the MAX6770TALD3+ datasheet, MAX6770TALD3+ pinout, MAX6770TALD3+ application, or MAX6770TALD3+ equivalent, key selection criteria include its AEC-Q100-qualified operation over –40°C to +125°C, open-drain active-low RESET output, ENABLE-controlled startup, and thermally enhanced 6-pin TDFN package with exposed pad.

Technical Context

The MAX6770TALD3+ belongs to the MAX6765–MAX6774B family of high-voltage linear regulators with integrated supervisory functions. It implements a fixed-output (5.0V) L-version configuration with preset reset threshold of 4.625V (falling) and fixed 50ms reset timeout (D3), using internal voltage reference and comparator-based reset logic.

This variant features single active-high ENABLE control (no HOLD or WDI), open-drain or push-pull RESET output, and thermal/short-circuit protection. Its regulator core uses a PMOS pass device enabling low dropout and stable operation under high ambient temperature and wide VIN conditions.

Key Specifications

Pinout & Package

MAX6770TALD3+ is housed in a thermally enhanced 6-pin 3mm × 3mm TDFN-EP package (exposed pad connected to GND), rated for 1.951W continuous dissipation at TA ≤ +70°C with proper PCB copper area.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6773TALD3+, MAX6770TALD3+ removes WDI complexity while retaining identical 5V regulation, reset behavior, and AEC-Q100 qualification-ideal for cost-sensitive, non-watchdog applications. Compared with TLV70750PDQNR, MAX6770TALD3+ delivers full battery-direct capability, integrated supervision, and extended temperature range essential for automotive front-end power.

Availability

MAX6770TALD3+ is available at Aetrix Electronics and suitable for automotive infotainment systems, body control modules, and telematics control units requiring stable component supply across extended temperature and high-reliability environments.

Supply support for MAX6770TALD3+ 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 automotive, industrial, and communications markets.

The MAX6765–MAX6774B product line targets automotive power-supply supervision, delivering micropower, high-voltage linear regulation with integrated reset and protection for always-on electronic control units.

FAQ

What is the reset threshold voltage for MAX6770TALD3+?

The MAX6770TALD3+ has a fixed reset threshold of 4.625V (±125mV) for the falling edge of the 5.0V output. This value is factory-trimmed and guaranteed over –40°C to +125°C. When VOUT drops below this threshold, the active-low RESET output asserts and remains asserted for the full 50ms timeout period after VOUT recovers above 4.625V. The threshold is not adjustable on the MAX6770TALD3+.

Does MAX6770TALD3+ support adjustable output voltage?

No, MAX6770TALD3+ does not support adjustable output voltage. It is a fixed 5.0V output variant (L-suffix) with internal feedback resistors. Adjustable output (1.8V–11V) requires SET pin connectivity and is only available on MAX6767–MAX6774B variants with suffixes other than L/M/T/S/Z/Y/W/V - for example, MAX6770TAJD3+ would require external resistors, but MAX6770TALD3+ is strictly fixed 5V.

Is MAX6770TALD3+ AEC-Q100 qualified?

Yes, MAX6770TALD3+ is AEC-Q100 qualified (Grade 0, –40°C to +125°C). This qualification is explicitly confirmed in the datasheet's Ordering Information table for parts ending in "/V+", and MAX6770TALD3+ includes the "/V+" suffix denoting automotive qualification. It meets stress testing requirements for temperature cycling, humidity, and mechanical shock per AEC-Q100 Rev H.

What package type and thermal performance does MAX6770TALD3+ use?

MAX6770TALD3+ uses a 6-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) connected to GND. At TA ≤ +70°C, it supports up to 1.951W continuous power dissipation; above +70°C, it derates at 24.4mW/°C. Proper soldering of the EP to a ≥1in² 2oz copper ground plane is required to achieve rated thermal performance and sustain 100mA output under high ambient conditions.

Can MAX6770TALD3+ be used without an external capacitor on the TIMEOUT pin?

Yes, MAX6770TALD3+ can be used without an external capacitor on the TIMEOUT pin. Connecting TIMEOUT directly to OUT selects the factory-programmed 50ms reset timeout (D3-suffix). Leaving TIMEOUT floating is not recommended; it must be either tied to OUT or connected to a capacitor to GND. No pull-up or pull-down is required - the internal circuitry interprets the connection state to select fixed or adjustable timing.