Designed to enable simultaneous battery charging and system operation of a Li-ion-powered USB peripheral from a USB host, the LTC4410 from Linear Technology powers the system load from the USB 5V supply—not the battery’s 3.6V terminal—thus cutting charging time by up to 39%. The IC ensures that the portable device remains in compliance with USB overcurrent specifications by keeping the total current draw from the USB port constant. The 6-lead thin SOT device routes system load to the battery immediately when the USB cable is detached from the peripheral device, thus ensuring seamless, non-glitching operation of the end device. The vendor offers a matching USB-specific Li-ion battery charging IC or general-purpose Li-ion charging IC to complement this US$1.20 (1000 piece) device.
Designed to enable simultaneous battery charging and system operation of a Li-ion-powered USB peripheral from a USB host, the LTC4410 from Linear Technology powers the system load from the USB 5V supply—not the battery’s 3.6V terminal—thus cutting charging time by up to 39%. The IC ensures that the portable device remains in compliance with USB overcurrent specifications by keeping the total current draw from the USB port constant. The 6-lead thin SOT device routes system load to the battery immediately when the USB cable is detached from the peripheral device, thus ensuring seamless, non-glitching operation of the end device. The vendor offers a matching USB-specific Li-ion battery charging IC or general-purpose Li-ion charging IC to complement this US$1.20 (1000 piece) device.
