Analog Devices Inc./Maxim Integrated MAX6795TPLD2/V+

Overview

MAX6795TPLD2/V+ 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 operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and provides a fixed 3.3V output with 87.5% reset threshold and 12.5ms reset timeout - designed for automotive body control modules and infotainment power rails.

For engineers reviewing the MAX6795TPLD2/V+ datasheet, MAX6795TPLD2/V+ pinout, MAX6795TPLD2/V+ application, or MAX6795TPLD2/V+ equivalent, key selection considerations include its -40°C to +125°C operation, TQFN-20EP package with exposed pad, 420mV typical dropout at 100mA, HOLD/ENABLE logic for ignition-controlled hold circuits, and dual-mode watchdog support with adjustable timeout via CSWT capacitor.

Technical Context

The MAX6795TPLD2/V+ implements a single high-side LDO regulator with internal pFET gate drive (GATEP) for reverse-battery protection and integrates a precision 1.231V reference for PFI comparator and SET feedback. Its reset circuit monitors OUT voltage with fixed 87.5% threshold relative to nominal output and asserts active-low RESET for a factory-programmed 12.5ms timeout after recovery.

Watchdog functionality uses WDI input with fixed 280ms minimum timeout (CSWT = OUT), configurable via external capacitor or disabled via WD-DIS; it supports fast/slow fault detection only in MAX6791/MAX6792 - not applicable to MAX6795TPLD2/V+. The HOLD input enables self-holding behavior by latching ON state independently of ENABLE.

Key Specifications

Pinout & Package

MAX6795TPLD2/V+ is housed in a 5mm × 5mm, 20-pin thermally enhanced TQFN package with exposed pad (EP), rated for 2.7W power dissipation and optimized for high-ambient automotive environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6795TPSD2/V+, MAX6795TPLD2/V+ provides optimal voltage matching for modern 3.3V automotive MCUs while retaining identical watchdog, HOLD, and reverse-battery protection capabilities; TLV70733PDPWR lacks critical automotive features and cannot replace it in AEC-Q100 designs.

Availability

MAX6795TPLD2/V+ is available at Aetrix Electronics and suitable for automotive body control modules, infotainment systems, and ADAS sensor hubs requiring stable component supply across extended temperature ranges and high-reliability automotive qualification.

Supply support for MAX6795TPLD2/V+ 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, medical, and automotive applications.

The MAX6791–MAX6796 family was engineered specifically for automotive power-supply supervision - integrating high-input-voltage LDOs with reset, watchdog, PFI, and reverse-battery protection in a single AEC-Q100 qualified device.

FAQ

What output voltage does the MAX6795TPLD2/V+ provide?

The MAX6795TPLD2/V+ provides a fixed 3.3V output voltage with ±2.5% accuracy over -40°C to +125°C. This is confirmed by the "L" prefix in the ordering code (TPLD2/V+), where 'L' denotes 3.3V output per Maxim's selector guide. The device does not require external resistors for this setting - SET pin is internally connected to GND in factory configuration.

Is the MAX6795TPLD2/V+ pin-compatible with other devices in the MAX6791–MAX6796 family?

Yes, the MAX6795TPLD2/V+ shares the same 20-pin TQFN-EP package and pinout as all MAX6791–MAX6796 variants, including MAX6795TPSD2/V+ and MAX6796 series. Pin functions such as IN, OUT, ENABLE, RESET, CSRT, and CSWT are identically mapped, enabling direct substitution where output voltage and supervisory timing match design requirements.

How is the 12.5ms reset timeout implemented in the MAX6795TPLD2/V+?

The MAX6795TPLD2/V+ implements a fixed 12.5ms reset timeout (D2 option) by factory programming the CSRT pin to connect internally to OUT. No external capacitor is needed - the timeout is generated by an on-chip current source charging an internal capacitor to a 1.218V threshold, producing precise 12.5ms ±25% delay after VOUT exceeds its 87.5% reset threshold.

Does the MAX6795TPLD2/V+ support windowed watchdog functionality?

No, the MAX6795TPLD2/V+ does not support windowed watchdog functionality. That feature is exclusive to MAX6791 and MAX6792 variants, which include WDS0/WDS1 inputs for ratio selection. The MAX6795TPLD2/V+ offers only standard watchdog timeout (280ms min) via CSWT, with optional disable via WD-DIS pin - confirmed in the Functional Diagram and Watchdog Timer section of the datasheet.

What is the purpose of the GATEP pin on the MAX6795TPLD2/V+?

The GATEP pin on the MAX6795TPLD2/V+ drives the gate of an external p-channel MOSFET to implement reverse-battery protection. When battery polarity is inverted, GATEP pulls low to turn off the pFET, blocking current flow and protecting downstream circuitry - eliminating the 0.3–0.7V forward drop and thermal loss of traditional series diodes in automotive power paths.