Maxim’s MAX4959/MAX4960 are overvoltage-protection (OVP) controllers with battery-switchover functionality.
Designed to protect low-voltage systems up to 28 V, these devices provide resistor-programmable overvoltage (6 V to 28 V) and undervoltage (5 V to 28 V) trip levels.
To implement this OVP and prevent damage to protected components, the devices turn off an external pFET when the input voltage exceeds the overvoltage threshold. Subsequently, they hold the external pFET off until the input voltage rises above the undervoltage-lockout (UVLO) threshold. These controllers also feature a control-bit pin that switches to the battery when the host system detects a disconnection at the AC adapter. This combination of OVP and battery-switchover functionality makes the controllers ideal for low-voltage systems such as ultra-mobile PCs, notebooks and camcorders.
The modules provide ±15 kV ESD protection on the input when the input is bypassed with an external 1 μF ceramic capacitor. They are available in 2 mm x 2 mm, 10-pin microDFN and 3 mm x 5 mm, 10-pin microMAX packages.
Clearing the Static: Effectively control static in your workplace Actum Electronics
Circuit & System Protection
Controlling electrostatic discharge in the workplace is crucial to protect sensitive electronic equipment from damage. Implementing an ESD control program involves various measures and tests.
Read more...Robust PoE module CST Electronics
Power Electronics / Power Management
The Ag59800-LPB high power, IEEE 802.3bt compliant, PD module from Silvertel offers typical efficiency of 95% making it an ideal choice for higher power, space-constrained applications.
Read more...LED driver for industrial power supply indication Altron Arrow
Editor's Choice Circuit & System Protection
A simple and small solution for driving an LED to provide visual feedback in the presence/absence of a system’s power using a chip not originally designed for this purpose.
Read more...Clearing the Static: Cleaning in an ESD-protected area Actum Electronics
Circuit & System Protection
Cleaning in a protected electrostatic discharge area is a critical task to maintain the integrity of sensitive electronic components and prevent damage caused by static electricity.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.