Analog Devices Inc./Maxim Integrated MAX6795TPTD1+T

Overview

MAX6795TPTD1+T from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive power management. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and provides fixed 5V output with 92.5% reset threshold - enabling robust operation during load-dump transients in engine control units.

For engineers reviewing the MAX6795TPTD1+T datasheet, MAX6795TPTD1+T pinout, MAX6795TPTD1+T application, or MAX6795TPTD1+T equivalent, key selection criteria include its AEC-Q100-qualified 20-pin TQFN package, capacitor-adjustable reset/watchdog timeout, HOLD-enabled self-holding circuit, and thermal protection up to +125°C ambient.

Technical Context

The MAX6795TPTD1+T implements a single LDO regulator with internal pFET pass element, supporting preset (5V) or adjustable (1.8V–11V) output via SET pin feedback. Its supervisory block integrates a precision 1.231V PFI comparator, open-drain or push-pull RESET with fixed 92.5% threshold relative to VOUT, and a watchdog timer with selectable fast/slow fault detection or disable capability.

It uses dual timeout mechanisms: CSRT pin sets reset timeout (35μs–200ms), while CSWT configures watchdog timeout (280ms min or capacitor-adjustable). The HOLD input enables latch-up behavior without external components, and GATEP drives an external p-channel MOSFET for reverse-battery protection - critical for 12V/24V automotive systems.

Key Specifications

Pinout & Package

MAX6795TPTD1+T 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 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 MAX6795TPTD1+T, MAX6795TPLD2/V+ offers certified automotive qualification and longer reset timeout but same core regulation and supervision; TPS7B8750QKVURQ1 reduces cost and IQ but sacrifices critical automotive safety features including HOLD, GATEP, and 72V tolerance.

Availability

MAX6795TPTD1+T is available at Aetrix Electronics and suitable for automotive engine control, ADAS camera modules, and telematics gateways requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX6795TPTD1+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 automotive, industrial, and communications markets.

The MAX6791–MAX6796 family was engineered specifically for high-reliability automotive power rails, integrating LDO regulation, reset supervision, watchdog monitoring, and reverse-battery protection into a single AEC-Q100-qualified device.

FAQ

What output voltage does MAX6795TPTD1+T provide?

MAX6795TPTD1+T provides a fixed 5V output voltage. This is confirmed by the "T" in the ordering code (per Maxim's selector guide: T = 5V), and electrical characteristics show VOUT = 4.850V to 5.150V at 300mA load and VIN = 8V. The device does not support adjustable output in this variant - SET pin must be grounded.

Is MAX6795TPTD1+T AEC-Q100 qualified?

MAX6795TPTD1+T is not AEC-Q100 qualified. The "/V+" suffix denotes qualification (e.g., MAX6795TPLD2/V+), but MAX6795TPTD1+T lacks this designation. It is rated for −40°C to +125°C operation and built on automotive-grade processes, yet formal AEC-Q100 test reports are not assigned to this specific tape-and-reel variant.

What is the reset timeout period for MAX6795TPTD1+T?

The reset timeout period for MAX6795TPTD1+T is 3.125ms (D1 option), as indicated by the "D1" in the part number. This is verified in Table 2 of the datasheet: CSRT = OUT yields tRP = 3.125ms (typ). The timeout is fixed when CSRT is tied to OUT; using a capacitor allows adjustment across 35μs–200ms.

Does MAX6795TPTD1+T support reverse-battery protection?

Yes, MAX6795TPTD1+T supports reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. When reverse polarity is applied, the internal circuitry disables GATEP output, blocking current flow. This eliminates the need for series Schottky diodes and their associated voltage drop and power loss.

Can MAX6795TPTD1+T be used without the HOLD function?

Yes, MAX6795TPTD1+T can be used without HOLD by leaving the HOLD pin unconnected or tying it to GND. In that configuration, ENABLE acts as a standard ON/OFF control: regulator turns on when ENABLE is high and shuts down immediately when ENABLE goes low. Internal 2µA pullup to OUT ensures predictable default behavior.