Analog Devices Inc./Maxim Integrated MAX6795TPMD0+

Overview

The MAX6795TPMD0+ from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions (RESET, watchdog, power-fail detection) for automotive systems. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and supports fixed 5V output with 92.5% reset threshold - used in engine control units to maintain microprocessor reliability during load-dump transients.

For engineers reviewing the MAX6795TPMD0+ datasheet, MAX6795TPMD0+ pinout, MAX6795TPMD0+ application, or MAX6795TPMD0+ equivalent, key selection criteria include its AEC-Q100-qualified 20-pin TQFN package, capacitor-adjustable reset timeout (D0 = 35μs), fixed 280ms watchdog timeout, HOLD/ENABLE logic for ignition-controlled self-holding, and thermal protection up to +125°C ambient.

Technical Context

The MAX6795TPMD0+ implements a single LDO regulator with internal pFET pass element, low-dropout architecture (420mV typ @ 100mA), and precision bandgap reference for ±1.5% output voltage accuracy over temperature. Its supervisory block integrates a comparator-based RESET generator with fixed 92.5% threshold relative to VOUT, a monostable reset timeout circuit triggered by CSRT ramping, and a non-windowed watchdog timer with fixed 280ms timeout (CSWT tied to OUT).

It uses dual enable logic: ENABLE asserts the regulator, while HOLD sustains regulation after ENABLE release - enabling ignition-switched hold-on functionality without external latching components. The device includes reverse-battery protection via GATEP-driven pFET, thermal shutdown at +165°C, and output overvoltage protection clamping at 105–110% of nominal VOUT.

Key Specifications

Pinout & Package

MAX6795TPMD0+ is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN-EP package with exposed pad (EP) connected internally to GND. The package supports up to 2.7W continuous power dissipation and is qualified per AEC-Q100 Grade 0.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6795TPSD2/V+, the MAX6795TPMD0+ offers faster reset deassertion (35μs vs. 12.5ms) for time-critical ECUs, while lacking formal AEC-Q100 certification; versus TLV70733PDQNR, it provides full automotive-grade supervision but requires higher design effort for timing integration.

Availability

MAX6795TPMD0+ is available at Aetrix Electronics and suitable for automotive engine control, body electronics, ADAS camera modules, and telematics systems requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX6795TPMD0+ 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 MAX6795TPMD0+ belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators engineered specifically for automotive subsystems requiring robustness against load-dump, cold-crank, and thermal stress - with integrated supervision to reduce system-level component count.

FAQ

What output voltage does the MAX6795TPMD0+ provide?

The MAX6795TPMD0+ provides a fixed 5V output voltage. This is confirmed by the "D0" suffix in the part number, which corresponds to the 5V preset option per Maxim's ordering guide. The device does not support adjustable output in this configuration - SET must be grounded. Output voltage is guaranteed within ±1.5% over -40°C to +125°C, with typical accuracy of ±0.5% at +25°C.

Does the MAX6795TPMD0+ include watchdog functionality?

Yes, the MAX6795TPMD0+ includes a fixed 280ms watchdog timeout period. As indicated by the "D0" suffix and confirmed in the Electrical Characteristics table, CSWT is internally connected to OUT for fixed timeout operation. The watchdog monitors WDI transitions and asserts RESET if no valid edge occurs within 280ms (min), providing firmware lockup detection for automotive ECUs.

What is the reset timeout period for the MAX6795TPMD0+?

The MAX6795TPMD0+ has a fixed reset timeout period of 35μs, designated by the "D0" option in the ordering code. This value is verified in the RESET TIMEOUT PERIOD table (tRP, D0 row) and applies when CSRT is tied to OUT. The short duration enables rapid system recovery after brief brownouts, making it suitable for real-time control applications like engine timing circuits.

Is the MAX6795TPMD0+ AEC-Q100 qualified?

The MAX6795TPMD0+ itself is not explicitly AEC-Q100 qualified per its part number suffix (lacks "/V+" designation). However, it shares the same die and package as AEC-Q100-qualified variants like MAX6795TPLD2/V+ and MAX6795TPSD2/V+. Its -40°C to +125°C operating range, thermal shutdown, and automotive-focused features align with AEC-Q100 requirements, though formal qualification applies only to /V+ marked versions.

How does the HOLD function operate on the MAX6795TPMD0+?

The HOLD input on the MAX6795TPMD0+ is an active-low signal that sustains regulator output even after ENABLE is deasserted. When HOLD is pulled low during initial power-up, the device remains ON regardless of ENABLE state - enabling ignition-key-triggered latching. Releasing HOLD (to high or floating) shuts down the output. HOLD is internally pulled up to OUT with a 2µA current source, simplifying implementation without external biasing.