Maxim MAX14571-73 Overvoltage & Overcurrent Protectors
Maxim Integrated MAX14571 / MAX14572 / MAX14573 Adjustable Overvoltage and Overcurrent Protectors are ideal for protecting systems against positive and negative input voltage faults up to ±40V and feature low 100mΩ (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). These Maxim protection devices also feature programmable current-limit protection up to 4.2A. Once current reaches the threshold, MAX14571 turns off after the 20.7ms (typ) blanking time and stays off during the retry period. MAX14572 latches off after the blanking time, and MAX14573 limits the current continuously. MAX14571-73 also offer reverse current and thermal-shutdown protection. These devices are designed for use in a variety of battery-power applications, consumer electronics, industrial equipment, and marine equipment.