Analog Devices Inc./Maxim Integrated MAX14607EWL+T

Overview

MAX14607EWL+T from Maxim Integrated is an overvoltage protection IC with reverse bias blocking, designed as a high-side protection switch for USB power delivery and portable system input rails. It features a 6.8V ±3% internal OVLO threshold, 54mΩ typical R_ON, 3A continuous current capability, and operates from +2.3V to +36V input. It is used in smartphone charging circuits to prevent damage from adapter overvoltage faults.

For engineers reviewing the MAX14607EWL+T datasheet, MAX14607EWL+T pinout, MAX14607EWL+T application, or MAX14607EWL+T equivalent, key selection criteria include its reverse bias blocking behavior during disable, thermal shutdown at +150°C, 15ms startup debounce, soft-start timing, and WLP package compatibility with space-constrained mobile PCB layouts.

Technical Context

The MAX14607EWL+T integrates two back-to-back nMOSFETs to enable bidirectional reverse bias blocking when disabled-unlike single-FET OVP devices. Its internal charge pump drives gate voltages above VIN to ensure full enhancement across the 2.3V–36V input range.

Control logic combines EN (active-low), OVLO (external override), and ACOK (open-drain status flag) to support multiple fault-handling modes: OVP-triggered shutdown, EN-controlled disable, and thermal shutdown with ACOK deassertion. The 15ms input debounce prevents false turn-on during supply ramp-up.

Key Specifications

Pinout & Package

MAX14607EWL+T uses a 9-bump, 1.3mm × 1.3mm Wafer-Level Package (WLP) with bottom-side solder bumps. The package is RoHS-compliant and optimized for high-density mobile PCB assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar overvoltage protection applications.

Compared with MAX14607EWL+T, TPD3S014RTER serves dual data/power protection but cannot replace its 6.8V precision OVP and reverse blocking, while LM74700QDBVRQ1 meets automotive requirements but sacrifices soft-start, ACOK signaling, and reverse isolation needed in portable systems.

Availability

MAX14607EWL+T is available at Aetrix Electronics and suitable for smartphone charging input protection, USB-C power delivery front-end design, and portable media player power rail management requiring stable component supply and long-term lifecycle support.

Supply support for MAX14607EWL+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 high-reliability applications in consumer, industrial, and communications markets.

The MAX14606/MAX14607 product line targets space-constrained portable electronics requiring robust, integrated overvoltage protection with reverse blocking-specifically addressing USB power path reliability in smartphones and tablets.

FAQ

What is the exact overvoltage lockout threshold for MAX14607EWL+T?

The MAX14607EWL+T has a factory-trimmed internal overvoltage lockout threshold of 6.8V ±3%, specified as 6.6V (min) to 7.0V (max) at rising input. This value is fixed and does not require external resistor programming, enabling consistent 9V adapter fault detection across production units.

Does MAX14607EWL+T provide reverse current blocking when disabled?

Yes, MAX14607EWL+T provides active reverse bias blocking when disabled via EN high, OVLO low, or thermal shutdown. Its dual back-to-back nMOSFET architecture prevents current flow from OUT to IN, eliminating backfeed into faulty or disconnected input sources-a key differentiator from single-FET OVP solutions.

What is the purpose of the ACOK pin on MAX14607EWL+T?

The ACOK pin on MAX14607EWL+T is an open-drain status flag that goes low only after the input voltage stabilizes within the valid OVLO window and passes the 15ms debounce timer. It signals "power good" to the host system and floats high during thermal shutdown, enabling reliable system power sequencing without external monitoring.

Can MAX14607EWL+T handle 3A continuous current without derating?

Yes, MAX14607EWL+T is rated for 3A continuous current at ambient temperatures up to +70°C. At higher ambient temperatures, derating applies: power dissipation is limited to 952mW at +70°C, decreasing by 11.9mW/°C above that point, corresponding to ~2.5A at +85°C with proper PCB copper area.

What package type and dimensions does MAX14607EWL+T use?

MAX14607EWL+T uses a 9-bump Wafer-Level Package (WLP) measuring 1.3mm × 1.3mm with bottom-side solder bumps. The top mark is "AJS", and it is RoHS-compliant and lead-free ("+T" suffix denotes tape-and-reel packaging).