Analog Devices Inc./Maxim Integrated MAX14586ETA+T

Overview

MAX14586ETA+T from Maxim Integrated is a high-current overvoltage protector IC featuring an integrated 48mΩ (typ) n-channel MOSFET switch, adjustable OVLO threshold from 4V to 20V, and fixed 7V ±2.9% internal trip level. It delivers 3A continuous current protection for low-voltage systems up to +36V input, with thermal shutdown and soft-start, widely used in smartphone power rails.

For engineers reviewing the MAX14586ETA+T datasheet, MAX14586ETA+T pinout, MAX14586ETA+T application, or MAX14586ETA+T equivalent, key selection factors include its 8-pin TDFN package, 15ms startup debounce, 7V internal OVLO accuracy, and compatibility with Li-ion battery charging paths requiring robust fault isolation.

Technical Context

The MAX14586ETA+T implements a charge-pump–driven internal FET with precise voltage-sensing logic that enforces 15ms input debounce before enabling soft-start. Its OVLO comparator selects between internal 7V reference and external resistor-divider–set thresholds based on OVLO pin voltage relative to 0.35V select threshold.

Thermal shutdown activates at +150°C junction temperature with 20°C hysteresis, and the device maintains stable operation across -40°C to +85°C ambient while supporting up to 1000µF output capacitance without overcurrent latch-up during turn-on.

Key Specifications

Pinout & Package

MAX14586ETA+T uses an 8-pin TDFN-EP (2mm × 2mm) package with exposed pad for thermal dissipation. Pins 1–2 are paralleled IN inputs; pins 7–8 are paralleled OUT outputs; pin 6 is GND; pin 3 is OVLO control; pins 4–5 are internally connected (I.C.) and must be tied to GND or left floating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPD3S014RTER and LT4363IMS-2#PBF, the MAX14586ETA+T uniquely balances 3A current handling, 7V precision OVLO, and 2mm×2mm footprint-making it optimal for consumer portable devices where board space, accuracy, and integration density are critical.

Availability

MAX14586ETA+T is available at Aetrix Electronics and suitable for smartphone charging interfaces, tablet PC power input protection, and portable medical monitor power inputs requiring stable component supply and RoHS-compliant packaging.

Supply support for MAX14586ETA+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 performance and reliability in constrained environments.

The MAX14586ETA+T belongs to Maxim's overvoltage protection product line, engineered specifically for high-current, space-sensitive mobile power architectures requiring accurate, self-contained fault isolation without external FETs or controllers.

FAQ

What is the exact overvoltage trip threshold of MAX14586ETA+T?

The MAX14586ETA+T has a factory-trimmed internal overvoltage lockout (OVLO) threshold of 7V ±2.9%, measured at the IN pin. This value is guaranteed across -40°C to +85°C and applies when the OVLO pin is grounded. The MAX14586ETA+T does not default to the MAX14590's 15V threshold - the part number suffix '86' explicitly denotes the 7V variant.

Can MAX14586ETA+T support 1000µF output capacitance without tripping on in-rush current?

Yes. The MAX14586ETA+T incorporates a 15ms soft-start function that linearly ramps the output voltage, enabling safe charging of up to 1000µF output capacitance without triggering overcurrent protection. This behavior is verified in the datasheet's Typical Operating Characteristics (Figure MAX14586 toc08) and eliminates need for external in-rush limiters.

What is the recommended IN bypass capacitor for MAX14586ETA+T?

A 1µF ceramic capacitor placed as close as possible to the MAX14586ETA+T IN pins (pins 1 and 2) is required to achieve ±15kV Human Body Model (HBM) ESD protection. Without this capacitor, IN ESD rating drops significantly. The capacitor must connect directly between IN and GND, with minimal trace length and loop area.

Does MAX14586ETA+T require external components to operate at its internal 7V OVLO setting?

No. To use the internal 7V OVLO threshold, simply connect the OVLO pin (pin 3) directly to GND. No resistors, dividers, or additional passive components are needed. The MAX14586ETA+T automatically disables the external threshold detection circuitry when OVLO ≤ 0.25V, ensuring deterministic 7V trip behavior.

What thermal derating applies to MAX14586ETA+T at elevated ambient temperatures?

The MAX14586ETA+T has a junction-to-ambient thermal resistance (θ_JA) of 83.9°C/W. At ambient temperatures above +70°C, power dissipation must be derated at 11.9mW/°C. For example, at +85°C ambient, maximum allowable continuous power dissipation drops to 954mW − (15°C × 11.9mW/°C) = 775.5mW - corresponding to ~3.9A at 48mΩ R_ON.