Analog Devices Inc./Maxim Integrated MAX6796TPVD2+

Overview

MAX6796TPVD2+ 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 with 12.5ms timeout (D2 code), watchdog disable capability, and HOLD input for self-holding circuit implementation in engine control units.

For engineers reviewing the MAX6796TPVD2+ datasheet, MAX6796TPVD2+ pinout, MAX6796TPVD2+ application, or MAX6796TPVD2+ equivalent, key selection considerations include its AEC-Q100-qualified 5mm × 5mm TQFN package, -40°C to +125°C operation, 420mV typical dropout at 100mA, adjustable output voltage range (1.8V–11V), and dual-mode watchdog timer support with fixed or capacitor-adjustable timeouts.

Technical Context

The MAX6796TPVD2+ integrates a single LDO regulator with thermal/short-circuit/overvoltage protection, a precision reset monitor with 92.5% reset threshold (for 5V output), and a configurable watchdog timer supporting both standard and windowed modes via external logic inputs. Its HOLD input enables latch-up behavior without external components, critical for ignition-controlled systems.

It uses an internal 1.231V reference for PFI comparator and RESET threshold generation, supports reverse-battery protection via GATEP-driven pFET, and provides push-pull or open-drain RESET output with programmable timeout periods (35μs, 3.125ms, 12.5ms, 50ms, 200ms) selected by CSRT connection - D2 corresponds to 12.5ms nominal.

Key Specifications

Pinout & Package

The MAX6796TPVD2+ is housed in a thermally enhanced 20-pin TQFN-EP (5mm × 5mm, 0.5mm pitch) with exposed pad connected to GND for improved heat dissipation (2.7W max).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6795TPVD2+, the MAX6796TPVD2+ adds windowed watchdog capability via WDS0/WDS1 pins for enhanced fault detection; compared with TLV70733PDQNR, it supports full automotive input range and integrated supervision - making it uniquely suited for primary ECU power domains.

Availability

MAX6796TPVD2+ is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera systems, and telematics control units requiring stable component supply across extended temperature and high-reliability automotive programs.

Supply support for MAX6796TPVD2+ 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 MAX6796TPVD2+ belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators with supervisory functions - engineered specifically for automotive power domains requiring robustness against load dump, cold crank, and extended temperature operation.

FAQ

What output voltage does the MAX6796TPVD2+ deliver?

The MAX6796TPVD2+ delivers a factory-preset 5.0V output with ±2.5% accuracy over temperature and load. It can also be configured for adjustable output from 1.8V to 11V using an external resistor divider connected to the SET pin. The 5V option is confirmed by the 'V' in the part number suffix (TPVD2+), per Maxim's ordering guide Table 1.

How is the 12.5ms reset timeout implemented in the MAX6796TPVD2+?

The MAX6796TPVD2+ implements the 12.5ms reset timeout (D2 code) by connecting the CSRT pin to the OUT pin - this selects the internal 12.5ms nominal timeout period. The actual timeout varies from 8.75ms to 16.25ms over temperature, as specified in the Electrical Characteristics table. No external capacitor is required for this setting.

Does the MAX6796TPVD2+ support reverse-battery protection?

Yes, the MAX6796TPVD2+ 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 pulls GATEP low to turn off the pFET, blocking current flow. This eliminates the need for lossy series diodes and is explicitly documented in the Reverse-Battery Protection Circuitry section.

Can the watchdog function be disabled on the MAX6796TPVD2+?

Yes, the watchdog function on the MAX6796TPVD2+ can be disabled by driving the WD-DIS pin low. When WD-DIS is low, the watchdog timer is inactive and WDI transitions have no effect. WD-DIS is internally pulled up to OUT, so leaving it unconnected or tying it to OUT enables the watchdog - disabling requires an active low signal.

What is the purpose of the HOLD pin on the MAX6796TPVD2+?

The HOLD pin on the MAX6796TPVD2+ enables self-holding circuit behavior: when driven low after initial power-up, it keeps the regulator enabled even if ENABLE is subsequently pulled low. Releasing HOLD (letting it float or pulling high) shuts down the output. This allows ignition-switched latching without external components - a key feature for automotive start-stop systems.