Analog Devices Inc./Maxim Integrated MAX6796TPVD1+

Overview

MAX6796TPVD1+ from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive power management. It delivers up to 300mA at 5V output (preset), operates from 5V to 72V input, consumes only 68μA quiescent current, and features active-low RESET, watchdog timer, ENABLE, and HOLD inputs - enabling robust microcontroller power sequencing in engine control units.

For engineers reviewing the MAX6796TPVD1+ datasheet, MAX6796TPVD1+ pinout, MAX6796TPVD1+ application, or MAX6796TPVD1+ equivalent, key selection criteria include its 72V input tolerance, AEC-Q100-qualified thermal performance (−40°C to +125°C), adjustable reset timeout (35μs–200ms), fixed 280ms watchdog timeout, and 5mm × 5mm TQFN-20EP package with exposed pad for 2.7W dissipation.

Technical Context

The MAX6796TPVD1+ integrates a single LDO regulator with internal pass transistor, precision voltage reference (±1.5% output accuracy), and dual supervisory blocks: a reset generator monitoring OUT voltage with 92.5% threshold (for 5V output = 4.625V) and a fixed 280ms watchdog timer with WDI input. Its HOLD function enables self-holding behavior without external latching components.

It implements reverse-battery protection via GATEP pin driving an external pFET, includes thermal shutdown (+165°C) with 20°C hysteresis, short-circuit current limiting (480mA typical), and output overvoltage protection clamping at 105–110% of VOUT - all specified across the full −40°C to +125°C automotive temperature range.

Key Specifications

Pinout & Package

MAX6796TPVD1+ uses a 20-pin thermally enhanced TQFN package (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) connected internally to GND for low thermal resistance. The EP must be soldered to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage linear regulator with supervisory functions applications.

Compared with MAX6795TPVD1+, MAX6796TPVD1+ offers longer 50ms reset timeout for robust MCU initialization; versus TLV70733PDQNR, it provides full 72V operation, integrated watchdog, and AEC-Q100 qualification - making it the sole fit for primary automotive power supervision.

Availability

MAX6796TPVD1+ is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera systems requiring stable component supply under extended temperature and high-voltage stress conditions.

Supply support for MAX6796TPVD1+ 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 automotive power supervision - integrating high-input-voltage regulation, ultra-low IQ, and fault detection (RESET/watchdog/HOLD) into a single AEC-Q100-qualified device.

FAQ

What output voltage does MAX6796TPVD1+ deliver?

MAX6796TPVD1+ delivers a factory-preset 5.0V output with ±2.5% accuracy over temperature and load. The "V" in the part number denotes the 5V fixed output option. It can also be configured for adjustable output (1.8V–11V) by connecting the SET pin to an external resistor divider instead of grounding it - but the default configuration for MAX6796TPVD1+ is 5V.

Does MAX6796TPVD1+ include watchdog functionality?

Yes, MAX6796TPVD1+ includes a fixed 280ms watchdog timeout period (min) that monitors the WDI pin. If no valid edge occurs on WDI within that window, it asserts the RESET output for the programmed reset timeout duration. The watchdog can be disabled by driving WD-DIS low or tying it to OUT. This feature is integral to MAX6796TPVD1+'s role in automotive safety-critical firmware supervision.

What is the purpose of the HOLD pin on MAX6796TPVD1+?

The HOLD pin on MAX6796TPVD1+ enables self-holding behavior: when pulled low after initial power-up, it keeps the regulator enabled even if the ENABLE pin is subsequently driven low. Releasing HOLD (letting it float or pulling high) shuts down the output. This eliminates the need for external latching circuitry in ignition-controlled systems - a core design feature of MAX6796TPVD1+ for automotive power sequencing.

Can MAX6796TPVD1+ withstand automotive load-dump conditions?

Yes, MAX6796TPVD1+ is rated for 72V absolute maximum input voltage and is designed to survive ISO 7637-2 Load Dump pulses (up to +87V for 100ms). Its wide 5V–72V operating range, combined with internal overvoltage protection and thermal shutdown, makes it suitable for direct connection to automotive battery rails without additional transient suppression - a key requirement confirmed in MAX6796TPVD1+'s AEC-Q100 qualification testing.

What package type and thermal performance does MAX6796TPVD1+ use?

MAX6796TPVD1+ uses a 20-pin TQFN-EP package (5mm × 5mm, 0.5mm pitch) with exposed pad. At TA = +70°C, it supports up to 2.7W continuous power dissipation (2667mW derated above +70°C). The exposed pad must be soldered to a PCB ground plane to achieve this thermal performance - enabling reliable 300mA operation in high-ambient automotive environments up to +125°C junction temperature.