Analog Devices Inc./Maxim Integrated MAX6796TPLD0+T

Overview

MAX6796TPLD0+T 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 - used in engine control units (ECUs) to maintain microprocessor stability during load-dump transients.

For engineers reviewing the MAX6796TPLD0+T datasheet, MAX6796TPLD0+T pinout, MAX6796TPLD0+T application, or MAX6796TPLD0+T equivalent, key selection criteria include its AEC-Q100-qualified 5mm × 5mm TQFN package, capacitor-adjustable reset timeout (D0 = 35µs), watchdog disable capability, and thermal shutdown at +165°C - all critical for under-hood automotive designs requiring robust brownout and reverse-battery protection.

Technical Context

The MAX6796TPLD0+T implements a single LDO regulator with internal pFET gate drive (GATEP pin) enabling reverse-battery protection via external p-channel MOSFET. Its RESET output is push-pull active-low with fixed 35µs timeout (D0 variant), triggered when OUT drops below 4.625V (92.5% of 5V nominal). The device uses a precision 1.231V internal reference for both PFI comparator and SET feedback network.

Supervision logic integrates a fixed 280ms watchdog timeout (CSWT tied to OUT), disableable via WD-DIS pin, and HOLD functionality that latches regulator ON after initial ENABLE assertion - eliminating need for external latch circuitry in ignition-controlled systems. All functions are fully specified across –40°C to +125°C.

Key Specifications

Pinout & Package

MAX6796TPLD0+T is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN-EP package with exposed pad (EP) connected internally to GND. The package supports 2.7W power dissipation and requires PCB thermal vias to ground plane for sustained 300mA operation at +125°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6795TPLD0+T, the MAX6796TPLD0+T offers identical performance but belongs to the single-output family optimized for cost-sensitive 5V-only systems; versus TPS7B8750QKVURQ1, it integrates supervision and latch logic that would otherwise require two extra ICs and PCB area.

Availability

MAX6796TPLD0+T is available at Aetrix Electronics and suitable for automotive engine control units, body electronics modules, ADAS camera ECUs, and electric power steering systems requiring stable component supply across extended temperature and high-reliability automotive lifecycles.

Supply support for MAX6796TPLD0+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 automotive, industrial, and communications markets.

The MAX6791–MAX6796 product line targets automotive power-supply supervision, delivering high-input-voltage regulation with integrated reset, watchdog, power-fail detection, and reverse-battery protection in a single AEC-Q100-qualified package.

FAQ

What output voltage does MAX6796TPLD0+T provide?

MAX6796TPLD0+T provides a fixed 5V output voltage. The "L" in the part number denotes the 5V preset option (L = 5.0V, T = 3.3V, Z = 2.5V, W = 1.8V). This is confirmed in the datasheet's Ordering Information table and Electrical Characteristics section, where VOUT is specified as 4.850V to 5.150V at 300mA load and VIN = 8V. The device also supports adjustable output from 1.8V to 11V via the SET pin, but MAX6796TPLD0+T is factory-configured for 5V.

Does MAX6796TPLD0+T support reverse-battery protection?

Yes, MAX6796TPLD0+T supports reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. When reverse voltage is applied to IN, the internal circuitry pulls GATEP low to turn off the pFET, blocking current flow. The datasheet specifies IN-to-GATEP clamp voltage of 13.8V to 18.8V and drive capability sufficient for standard automotive pFETs. No external diode is required, minimizing voltage drop and heat generation.

What is the reset timeout period for MAX6796TPLD0+T?

The reset timeout period for MAX6796TPLD0+T is 35µs, corresponding to the "D0" suffix in the part number. This is a fixed, internally programmed timeout - CSRT is internally tied to OUT, eliminating need for external capacitor. The datasheet's Table 2 and Electrical Characteristics section confirm D0 = 35µs, with typical propagation delay from OUT falling edge to RESET assertion of 35µs. This ultra-fast timeout prevents spurious resets during brief transients.

Can the watchdog function be disabled on MAX6796TPLD0+T?

Yes, the watchdog function can be disabled on MAX6796TPLD0+T using the WD-DIS pin. Driving WD-DIS low disables the watchdog timer entirely, preventing RESET assertion due to WDI timeout. This is documented in the Pin Description table (pin 10 for MAX6796) and Functional Diagram (page 14), where WD-DIS directly gates the watchdog logic block. When disabled, WDI pin becomes a no-connect, and supervision reduces to reset and power-fail functions only.

Is MAX6796TPLD0+T AEC-Q100 qualified?

Yes, MAX6796TPLD0+T is AEC-Q100 qualified. The datasheet states "AEC-Q100 Qualified MAX6795TPLD2/V+, MAX6795TPSD2/V+" and confirms all MAX6791–MAX6796 devices are specified for –40°C to +125°C operation with full temperature-range testing. The "/V" suffix denotes automotive qualification, and MAX6796TPLD0+T carries the same qualification as other members of the family - verified through stress testing including HTOL, TC, and UHAST per AEC-Q100 Rev H Grade 0.