LTC3567 Series
High Efficiency USB Power Manager Plus 1A Buck-Boost Converter with I2C Control
Manufacturer: Analog Devices
Catalog
High Efficiency USB Power Manager Plus 1A Buck-Boost Converter with I2C Control
Key Features
• High Efficiency Switching PowerPath™Controller with Bat-Track™Adaptive Output Control
• Programmable USB or Wall Current Limit (100mA/500mA/1A)
• Full Featured Li-Ion/Polymer Battery Charger
• "Instant-On" Operation with a Discharged Battery
• 1.5A Maximum Charge Current
• Internal 180mΩ Ideal Diode Plus External Ideal Diode Controller Powers Load in Battery Mode
• Low No-Load IQWhen Powered from BAT (<30μA)
• High Efficiency (1A IOUT)
• 2.25MHz Constant Frequency Operation
• Low No-Load Quiescent Current (~13μA)
• Zero Shutdown Current
• I2C Control of All Functions
Description
AI
The LTC3567 is a highly integrated power management and battery charger IC for Li-Ion/Polymer battery applications. It includes a high efficiency current limited switching PowerPath manager with automatic load prioritization, a battery charger, an ideal diode, and a high efficiency synchronous buck-boost switching regulator. Designed specifically for USB applications, the LTC3567’s switching power manager automatically limits input current to a maximum of either 100mA or 500mA for USB or 1A for adapter-powered applications.The LTC3567’s switching input stage transmits nearly all of the 2.5W available from the USB port to the system load with minimal power wasted as heat. This feature allows the LTC3567 to provide more power to the application and eases thermal budgeting constraints in small spaces.The synchronous buck-boost DC/DC can provide up to 1A output current.The LTC3567 is available in a low profile 24-pin (4mm × 4mm × 0.75mm) QFN surface mount package.ApplicationsHDD Based MP3 Players, PDA, GPS, PMP ProductsOther USB Based Handheld Products