LTC4098-3.6 Datasheet | Linear Technology

Features n LTC4098-3.6 USB patible Switching Power Manager/Li Fe PO4 Charger with Overvoltage Protection Description The LTC®4098-3.6 is a high efficiency USB Power Path controller and full-featured Li Fe PO4 battery charger. It seamlessly manages power distribution from multiple sources including USB, wall adapter, automotive, Firewire or other high voltage DC/DC converters, and a Li Fe PO4 battery. The LTC4098-3.6 charge algorithm is optimized for Li Fe PO4 by implementing a 1-hour float voltage termination timer and a 0°C to 60°C NTC-based charge qualification range. Furthermore, pletely discharged batteries are charged at the full programmed charge current. The LTC4098-3.6’s switching regulator can automatically limit its input current for USB patibility. For automotive and other high voltage applications, the LTC4098‑3.6 interfaces with an external switching regulator. Both the USB input and the auxiliary input controller feature Bat Track optimized charging to provide maximum power to the application and reduced heat in high power density applications with input supplies from 5V to as high as 38V. An overvoltage protection circuit guards the LTC4098-3.6 from high voltage damage on the VBUS pin with just two external ponents. The LTC4098-3.6 is available in a 20-lead 3mm × 4mm × 0.75mm QFN surface mount package. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Bat Track and Power Path are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. .. Switching Regulator with Bat-Track TM Adaptive Output Control Makes Optimal Use of Limited Power Available from USB Port to Charge Battery and Power Application n Charge Control Algorithm Specifically Designed for Li Fe PO4 (Lithium Iron Phosphate) n Overvoltage Protection Guards Against Damage n Bat-Track External Step-Down Switching Regulator Control Maximizes Efficiency from Automotive, Firewire and...