Analog Devices Inc./Maxim Integrated MAX6796TPTD2+

Overview

MAX6796TPTD2+ 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 a fixed 5V output with 92.5% reset threshold and 12.5ms reset timeout - used in engine control units (ECUs) and ADAS domain controllers requiring robust brownout immunity.

For engineers reviewing the MAX6796TPTD2+ datasheet, MAX6796TPTD2+ pinout, MAX6796TPTD2+ application, or MAX6796TPTD2+ equivalent, key selection criteria include its AEC-Q100-qualified 5mm × 5mm TQFN package, dual-mode watchdog (fixed 280ms or capacitor-adjustable), HOLD/ENABLE logic for self-holding ignition circuits, and thermal protection up to +125°C ambient.

Technical Context

The MAX6796TPTD2+ implements a single high-side pFET-based LDO architecture with internal feedback loop referenced to a precision 1.231V bandgap. Its RESET output is push-pull active-low, triggered when OUT drops below 4.625V (92.5% of 5V), and remains asserted for 12.5ms after recovery. The watchdog timer monitors WDI transitions and supports disable via WD-DIS pin.

It integrates reverse-battery protection via GATEP drive (capable of sinking 100µA at VIN = 20V), power-fail detection (PFI threshold = 1.231V ±0.5%), and overvoltage protection clamping OUT at 1.05×VOUT. All supervisory timing (reset and watchdog) is internally trimmed and temperature-compensated across –40°C to +125°C.

Key Specifications

Pinout & Package

MAX6796TPTD2+ 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 to AEC-Q100 Rev H.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7B8750QKVURQ1 and TLV70750PDPWR, MAX6796TPTD2+ uniquely combines 72V operation, AEC-Q100 qualification, integrated HOLD logic, and GATEP-driven reverse-battery protection - making it the only single-package solution for demanding under-hood automotive LDO applications requiring functional safety support.

Availability

MAX6796TPTD2+ is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, and electric power steering systems requiring stable component supply with full automotive qualification and long-term production continuity.

Supply support for MAX6796TPTD2+ 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.

MAX6796TPTD2+ belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators with supervisory functions - engineered specifically for automotive power-rail conditioning where load-dump resilience, ultra-low standby current, and functional safety features are mandatory.

FAQ

What is the exact output voltage tolerance of MAX6796TPTD2+ at 125°C?

The MAX6796TPTD2+ delivers a nominal 5.0V output with guaranteed tolerance of ±2.5% over –40°C to +125°C (4.875V to 5.125V), as verified by production testing at both temperature extremes per datasheet Table 1. This applies specifically to the MAX6796TPTD2+ variant with L-coded 5V preset output and D2 reset timeout configuration.

Does MAX6796TPTD2+ support adjustable output voltage, or is it fixed-only?

MAX6796TPTD2+ is configured as a fixed 5V output device - its ordering code "TPTD2+" indicates L-option (5V) preset mode. While the MAX6796 base die supports adjustable operation via the SET pin, MAX6796TPTD2+ is factory-trimmed and tested exclusively for 5V output; using SET for adjustment voids specifications and is not supported.

How does the HOLD function behave when ENABLE is toggled during regulator operation?

When HOLD is pulled low, MAX6796TPTD2+ maintains regulated output regardless of ENABLE state. If ENABLE is subsequently pulled low while HOLD remains low, OUT stays active. Only releasing HOLD (to high-impedance or OUT voltage) shuts down the regulator - enabling ignition-switch-controlled latching without external components.

Can MAX6796TPTD2+ drive a p-channel MOSFET for reverse-battery protection without external circuitry?

Yes - MAX6796TPTD2+ integrates a dedicated GATEP driver that actively sinks current to turn on an external p-channel MOSFET. With proper FET selection (e.g., DMTH4007LPS), it achieves <50mΩ reverse-path resistance and eliminates the 0.3V forward drop of Schottky diodes - all without additional gate-drive components.

Is the RESET output of MAX6796TPTD2+ push-pull or open-drain, and what are its drive capabilities?

MAX6796TPTD2+ features a push-pull RESET output capable of sourcing ≥10µA at 0.8×VOUT and sinking ≥3.2mA at ≤0.4V. This allows direct connection to MCU reset pins without external pull-up resistors - confirmed in the Electrical Characteristics table (page 5) and Functional Diagram (page 14) of the MAX6796 datasheet.