General Description

The MAX14571/MAX14572/MAX14573 adjustable over voltage- and overcurrent-protection devices are ideal to protect systems against positive and negative input voltage faults up to Q40V and feature low 100mI (typ) RON FETs.

The overvoltage-protector (OVP) feature protects voltages between 6V and 36V, while the undervoltage-protector (UVP) feature protects voltages between 4.5V and 24V. The overvoltage-lockout (OVLO) and undervoltage-lockout (UVLO) thresholds are set using optional external resistors. The factory-preset internal OVLO threshold is 33V (typ) and the preset internal UVLO threshold is 19.2V (typ).

Features

Wide 4.5V to 36V Operating Input Range

Adjustable OVLO and UVLO Thresholds

 ±3 Accurate Preset Thresholds

 Automatic Internal and External Selection

Programmable Forward Current Limit

 Adjustable Current Limit Up to 4.2A

 ±15 Accuracy Limit

100mω (typ) On-Resistance FET

Dual-Enable Inputs

 High-Voltage-Capable Input, HVEN

 Microprocessor Input, EN

Reverse Current Flow Control Input, RIEN

Thermal-Shutdown Protection

Applications

Industrial Equipment

Consumer Electronics

Marine Equipment

Battery-Powered Applications