Analog Devices Inc./Maxim Integrated MAX6793TPVD3+T

Overview

The MAX6793TPVD3+T from Maxim Integrated is a dual-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive power management. It delivers up to 150mA per output (OUT1 and OUT2), supports 5V to 72V input range, features 68μA quiescent current, and provides fixed 5V/3.3V/2.5V/1.8V or adjustable 1.8V–11V outputs - used in engine control units and body electronics where load-dump resilience and low-power wake-up capability are critical.

For engineers reviewing the MAX6793TPVD3+T datasheet, MAX6793TPVD3+T pinout, MAX6793TPVD3+T application, or MAX6793TPVD3+T equivalent, key selection considerations include its dual-enable architecture (ENABLE1/ENABLE2), HOLD self-holding functionality, 50ms fixed reset timeout (D3), and AEC-Q100-compliant operation across –40°C to +125°C.

Technical Context

The MAX6793TPVD3+T implements two independent LDO regulators: OUT1 is adjustable or preset (e.g., 3.3V), while OUT2 is fixed at 5V. Its supervisory block includes a push-pull or open-drain RESET output with 92.5%/87.5% threshold tracking relative to OUT1, and a watchdog timer with fixed 280ms timeout (CSWT = OUT1) or capacitor-adjustable mode.

It integrates reverse-battery protection via GATEP-driven pFET, thermal shutdown (+165°C), short-circuit current limiting (~240mA), and power-fail detection (PFI threshold = 1.231V). The HOLD input enables latch-up behavior without external components, and ENABLE1/ENABLE2 allow independent control of each regulator output.

Key Specifications

Pinout & Package

MAX6793TPVD3+T is housed in a thermally enhanced 20-pin TQFN-EP (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) connected internally to GND for optimal heat dissipation (2.7W max).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output automotive LDO applications.

Compared with MAX6794TPVD3+T, the MAX6793TPVD3+T omits windowed watchdog inputs but retains identical pinout, thermal performance, and reset timing - making it ideal for cost-sensitive non-safety ECU designs. Unlike TLV70733PDQNR, it supports full automotive voltage range and integrated supervision.

Availability

MAX6793TPVD3+T is available at Aetrix Electronics and suitable for automotive engine control, body electronics, and ADAS subsystems requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.

Supply support for MAX6793TPVD3+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 demanding industrial, automotive, and communications applications.

The MAX6791–MAX6796 family was engineered specifically for automotive power-supply supervision - combining high-input-voltage LDO regulation, µP reset generation, watchdog monitoring, and reverse-battery protection in a single compact package.

FAQ

What output voltage options does the MAX6793TPVD3+T support?

The MAX6793TPVD3+T supports fixed 5V, 3.3V, 2.5V, or 1.8V on OUT1 (selected via SET1 grounding), plus an adjustable range from 1.8V to 11V using an external resistor divider. OUT2 is fixed at 5V. The "V" in MAX6793TPVD3+T indicates a 3.3V preset for OUT1, confirmed by Maxim's ordering guide and electrical characteristics tables.

Does the MAX6793TPVD3+T include reverse-battery protection?

Yes, the MAX6793TPVD3+T integrates reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET to block negative input voltages - eliminating the need for series Schottky diodes and their associated forward-voltage drop and thermal losses.

What is the meaning of the "D3" suffix in MAX6793TPVD3+T?

The "D3" suffix specifies a fixed 50ms reset timeout period (tRP), as defined in Table 2 of the MAX6791–MAX6796 datasheet. This value is set by internal circuitry when CSRT is connected to OUT1, and is confirmed in the Electrical Characteristics section under Reset Timeout Period (D3 = 35/50/65ms).

Is the MAX6793TPVD3+T AEC-Q100 qualified?

While the MAX6793TPVD3+T itself is not individually listed in AEC-Q100 reports, it belongs to the MAX6791–MAX6796 family, which includes AEC-Q100 qualified variants (e.g., MAX6795TPLD2/V+). The MAX6793TPVD3+T shares identical die, package, and test flow - and is widely deployed in automotive applications meeting AEC-Q100 requirements per manufacturer documentation.

How does the HOLD function operate in the MAX6793TPVD3+T?

In the MAX6793TPVD3+T, driving HOLD low after enabling OUT1 via ENABLE1 causes the regulator to remain active even if ENABLE1 is subsequently pulled low - creating a self-holding latch. Releasing HOLD (to high or open) shuts down OUT1. This behavior is verified in the Functional Diagram (MAX6793/MAX6794) and Enable and Hold Inputs section.