Analog Devices Inc./Maxim Integrated MAX6795TPSD2/V+T

Overview

The MAX6795TPSD2/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 preset 3.3V output with 87.5% reset threshold and 12.5ms reset timeout - ideal for automotive body control modules requiring robust brownout immunity and microcontroller supervision.

For engineers reviewing the MAX6795TPSD2/V+ datasheet, MAX6795TPSD2/V+ pinout, MAX6795TPSD2/V+ application, or MAX6795TPSD2/V+ equivalent, key selection criteria include its -40°C to +125°C operation, TQFN-20 EP package thermal performance (2.7W dissipation), dual-mode watchdog configurability, HOLD self-latching functionality, and automotive-grade qualification under AEC-Q100.

Technical Context

The MAX6795TPSD2/V+ implements a single LDO regulator with internal pFET pass element, supporting fixed 3.3V output (±2.5% over temperature) and dropout as low as 120mV at 20mA. Its supervisory block integrates a comparator-based RESET generator with 87.5% threshold relative to VOUT, capacitor-adjustable or factory-fixed 12.5ms timeout (D2 code), and a 280ms min watchdog timer with WD-DIS disable control.

It features ENABLE and HOLD inputs enabling ignition-controlled latching behavior: once enabled, asserting HOLD low maintains regulation even after ENABLE returns low - eliminating need for external latch circuitry. The device also includes reverse-battery protection via GATEP drive and a 1.231V precision PFI comparator for early power-fail warning.

Key Specifications

Pinout & Package

The MAX6795TPSD2/V+ is housed in a 5mm × 5mm, 20-pin thermally enhanced TQFN-EP package (exposed pad connected to GND), rated for 2.7W continuous power dissipation at +70°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6795TPLD2/V+, the MAX6795TPSD2/V+ provides tighter 3.3V regulation for modern low-voltage MCUs and lower reset threshold for earlier intervention during brownout; versus TLV70733PDPWR, it delivers full automotive-grade supervision, 72V tolerance, and latching control - making it irreplaceable in primary battery-fed systems.

Availability

The MAX6795TPSD2/V+ is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera ECUs, telematics control units, and electric power steering sensor interfaces requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX6795TPSD2/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, automotive, and communications applications.

The MAX6795TPSD2/V+ 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 a single AEC-Q100 qualified device.

FAQ

What output voltage does the MAX6795TPSD2/V+ provide?

The MAX6795TPSD2/V+ provides a factory-preset 3.3V output with ±2.5% accuracy over the full -40°C to +125°C operating range. This fixed output is selected by grounding the SET pin; the device does not require external feedback resistors for nominal operation. The 3.3V rail is optimized for powering modern automotive microcontrollers, CAN transceivers, and digital sensors.

How is the reset timeout period configured on the MAX6795TPSD2/V+?

The MAX6795TPSD2/V+ uses the D2 reset timeout code, providing a factory-fixed 12.5ms reset assertion period after VOUT recovers above the 87.5% threshold. This is implemented by connecting the CSRT pin to the OUT pin internally during manufacturing - no external capacitor is required. The 12.5ms duration complies with automotive reset timing standards for deterministic microcontroller initialization.

Does the MAX6795TPSD2/V+ support watchdog timer disable?

Yes, the MAX6795TPSD2/V+ supports hardware watchdog disable via the WD-DIS input. Driving WD-DIS low disables the watchdog function entirely, preventing RESET assertion due to WDI timeout. When WD-DIS is high or connected to OUT, the watchdog remains active with a minimum 280ms timeout period. This feature allows safe deactivation during debug or known-safe operational phases.

What is the purpose of the HOLD pin on the MAX6795TPSD2/V+?

The HOLD pin on the MAX6795TPSD2/V+ enables self-holding behavior: once the regulator is enabled via ENABLE, asserting HOLD low locks the output ON even if ENABLE subsequently goes low - mimicking an ignition-controlled latching circuit. Releasing HOLD (pulling high or leaving open) shuts down the regulator. This eliminates external latch components in automotive power architectures.

Is the MAX6795TPSD2/V+ qualified for automotive applications?

Yes, the MAX6795TPSD2/V+ is explicitly AEC-Q100 qualified (Grade 0) and marked with /V+ in its part number to denote automotive qualification. It is fully specified from -40°C to +125°C ambient, includes thermal shutdown at +165°C, and undergoes rigorous stress testing for vibration, humidity, and temperature cycling - meeting requirements for under-hood and safety-critical vehicle systems.