Analog Devices Inc./Maxim Integrated MAX6795TPLD2+T

Overview

MAX6795TPLD2+T from Maxim Integrated is an AEC-Q100 qualified, single-output, high-voltage linear regulator with integrated supervisory functions including reset, watchdog timer, and power-fail detection. It delivers up to 300mA at 5V output, operates from 5V to 72V input, consumes only 68μA quiescent current, and features a fixed 12.5ms reset timeout (D2) and 5V preset output - ideal for automotive body control modules requiring robust cold-crank and load-dump resilience.

For engineers reviewing the MAX6795TPLD2+T datasheet, MAX6795TPLD2+T pinout, MAX6795TPLD2+T application, or MAX6795TPLD2+T equivalent, key selection criteria include its 5V/300mA regulated output, -40°C to +125°C operation, TQFN-20 package with exposed pad, AEC-Q100 qualification, and integrated hold/enable logic for ignition-controlled self-holding circuits.

Technical Context

The MAX6795TPLD2+T implements a single LDO regulator with internal pFET pass element, supporting wide-input operation (5V–72V) and low-dropout performance (420mV typ @ 100mA). Its supervisory block integrates a fixed-threshold reset comparator (92.5% of VOUT), capacitor-adjustable or factory-set reset timeout (D2 = 12.5ms), and a 280ms min watchdog timer with disable capability via WD-DIS pin.

It uses a dedicated HOLD input tied internally to OUT with 2µA pullup, enabling latch-up behavior without external components; ENABLE is active-high with 0.5µA internal pulldown. The device includes thermal shutdown (+165°C), short-circuit protection (480mA max), and output overvoltage protection (1.05×VOUT).

Key Specifications

Pinout & Package

MAX6795TPLD2+T is housed in a thermally enhanced 20-pin TQFN package (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) connected internally to GND for optimal heat dissipation (2.7W capability).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage automotive regulator applications.

Compared with MAX6795TPSD2/V+, MAX6795TPLD2+T provides identical supervision and thermal performance but targets 5V MCU domains; versus NCP380LSN33T2G, it adds critical automotive features - AEC-Q100 qualification, 72V tolerance, watchdog, and HOLD - making it irreplaceable in functional-safety-aware systems.

Availability

MAX6795TPLD2+T is available at Aetrix Electronics and suitable for automotive body control modules, ADAS camera ECUs, engine control units, and infotainment subsystems requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX6795TPLD2+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, communications, and automotive applications.

The MAX6795TPLD2+T belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators engineered specifically for automotive power-supply supervision - integrating LDO regulation, reset generation, watchdog monitoring, and reverse-battery protection in one AEC-Q100-qualified package.

FAQ

What output voltage does MAX6795TPLD2+T provide?

MAX6795TPLD2+T provides a fixed 5.0V output (L option) with ±2.5% accuracy over temperature and line/load conditions. This is factory-set via internal trimming; no external feedback components are required. The 'L' in the part number explicitly denotes the 5V preset configuration, and the device maintains regulation down to 5V input while delivering up to 300mA.

Is MAX6795TPLD2+T qualified for automotive use?

Yes, MAX6795TPLD2+T is AEC-Q100 qualified (Grade 0) and marked with '/V+' in its full ordering code (MAX6795TPLD2/V+), confirming compliance with automotive reliability and stress-test requirements. It operates continuously from −40°C to +125°C ambient and supports junction temperatures up to +150°C - meeting under-hood deployment needs in modern vehicles.

What does the 'D2' in MAX6795TPLD2+T signify?

The 'D2' suffix in MAX6795TPLD2+T specifies a factory-programmed 12.5ms reset timeout period. This value is internally fixed and requires no external capacitor on the CSRT pin - simplifying design and improving timing accuracy. It ensures the RESET signal remains asserted for exactly 12.5ms after VOUT recovers above its 92.5% threshold, guaranteeing robust microcontroller initialization.

How does the HOLD function work on MAX6795TPLD2+T?

The HOLD input on MAX6795TPLD2+T is an active-low signal that, when pulled low after initial power-up, forces the regulator to remain ON even if ENABLE returns low - enabling self-holding behavior. Internally, HOLD is pulled up to OUT with 2µA, so connecting it to OUT or leaving it floating allows standard enable/disable operation. This eliminates need for external latch circuitry in ignition-controlled systems.

Can MAX6795TPLD2+T drive a p-channel MOSFET for reverse-battery protection?

Yes, MAX6795TPLD2+T includes a dedicated GATEP pin that actively drives the gate of an external p-channel MOSFET to block reverse battery connections. When IN is reversed, GATEP pulls low to turn off the MOSFET, preventing damage. This integrated feature replaces bulky series diodes, reducing voltage drop and power loss - critical for efficiency in 12V automotive systems.