The device provides voltage, temperature and current protection to ensure safe operation under abnormal operating conditions. The ISL8215M also provides automatic restart when the fault is cleared to protect the load and system. It offers a 0.6V - 12V adjustable output voltage, a maximum power density of 60mA/mm2, and a package size of only 13mm x 19mm.
Linear Technology Corporation, a division of Analog Devices, Inc., introduced the LTC4418, a dual-input power prioritizer for 2.5V to 40V systems. In order to achieve portability, maintain memory operation during undervoltage, and ensure smooth shutdown in the event of power loss, the electronic system uses batteries and capacitors as backup power. The LTC4418 typically uses a higher priority main power source such as a wall adapter or main battery to power the load and switch to a backup power source (usually a battery or large value capacitor) in the event of a main power supply undervoltage or missing power supply. The ability to operate at input voltages up to 40V allows the LTC4418 to accommodate a variety of power sources such as wall adapters, USB ports, supercapacitors, and multi-cell lead-acid, lithium-ion, or nickel-metal hydride (NiMH) batteries. The 26μA low operating quiescent current and a shutdown mode make the LTC4418 ideal for portable battery-powered systems.