LTC3576-1 Datasheet | Linear Technology

LTC3576/LTC3576-1 Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs Features DESCRIPTION n Bidirectional Switching Regulator with Bat-Track™ Adaptive Output Control Provides Efficient Charging and a 5V Output for USB On-The-Go n Bat-Track Control of External High Voltage Step Down Switching Regulator n Overvoltage Protection Guards Against Damage n Instant-On Operation with Discharged Battery n Triple Step-Down Switching Regulators with I2C Adjustable Outputs (1A/400m A/400m A IOUT) n 180mΩ Internal Ideal Diode + External Ideal Diode Controller Powers the Load in Battery Mode n Li-Ion/Polymer Battery Charger (1.5A Max ICHG) n Battery Float Voltage: 4.2V (LTC3576), 4.1V (LTC3576-1) n pact (4mm × 6mm × 0.75mm) 38-Pin QFN Package APPLICATIONS n HDD-Based Media Players n GPS, PDAs, Digital Cameras, Smart Phones n Automotive patible Portable Electronics The LTC®3576/LTC3576-1 are highly integrated power management and battery charger ICs for Li-Ion/Polymer battery applications. They each include a high efficiency, bidirectional switching Power Path™ manager with automatic load prioritization, a battery charger, an ideal diode, a controller for an external high voltage switching regulator and three general purpose step-down switching regulators with I2C adjustable output voltages. The internal switching regulators automatically limit input current for USB patibility and can also generate 5V at 500m A for USB on-the-go applications when powered from the battery. Both the USB and external switching regulator power paths feature Bat-Track optimized charging to provide maximum power to the application from supplies as high as 38V. An overvoltage circuit protects the LTC3576/LTC3576-1 from damage due to high voltage on the VBUS or WALL pins with just two external ponents. The LTC3576/LTC3576-1 are available in a low profile 38-pin (4mm × 6mm × 0.75mm) QFN package. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of...