LTC4160-1 Datasheet | Linear Technology

Features n Bidirectional Switching Regulator Makes Optimal Use of Limited Power Available from USB Port and also Provides a 5V Output for USB On-The-Go n Overvoltage Protection Guards Against Damage n 180mΩ Internal Ideal Diode Plus Optional External Ideal Diode Controller Seamlessly Provides Low Loss Power Path When Input Power is Limited or Unavailable n Instant-On Operation with Discharged Battery n Full Featured Li-Ion/Polymer Battery Charger n Bat-Track™ Adaptive Output Control For Efficient Charging n 1.2A Max Input Current Limit n 1.2A Max Charge Current with Thermal Limiting n Battery Float Voltage: 4.2V (LTC4160), 4.1V (LTC4160-1) n Low Battery Powered Quiescent Current (8µA) n 20-pin 3mm × 4mm × 0.75mm QFN Package APPLICATIONS n Media Players and Personal Navigation Devices n Digital Cameras, PDAs, Smart Phones LTC4160/LTC4160-1 Switching Power Manager with USB On-The-Go And Overvoltage Protection DESCRIPTION The LTC®4160/LTC4160-1 are high efficiency power management and Li-Ion/Polymer battery charger ICs. They each include a bidirectional switching Power Path™ controller with automatic load prioritization, a battery charger, and an ideal diode. The LTC4160/LTC4160-1’s bidirectional switching regulator transfers nearly all of the power available from the USB port to the load with minimal loss and heat which eases thermal constraints in small spaces. These devices feature a precision input current limit for USB patibility and Bat-Track output control for efficient charging. In addition, the ICs can also generate 5V at 500m A for USB On-The Go applications. An overvoltage circuit protects the LTC4160/LTC4160-1 from high voltage damage on the USB/wall adapter inputs with an external N-channel MOSFET and a resistor. The LTC4160/LTC4160-1 are available in a 3mm × 4mm × 0.75mm QFN surface mount package. L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks and Power Path and Bat-Track are a trademarks of Linear Technology...