Designed for Single-Cell Li-Ion- or Li-Polymer-Based Portable Applications
Integrated Dynamic Power-Path Management (DPPM) Feature Allowing the AC Adapter or the USB Port to Simultaneously Power the System and Charge the Battery
Power Supplement Mode Allows Battery to Supplement the USB or AC Input Current
Autonomous Power Source Selection (AC Adapter or USB)
Integrated USB Charge Control With Selectable 100-mA and 500-mA Maximum Input Current Regulation Limits
Dynamic Total Current Management for USB
Supports Up to 2-A Total Current
3.3-V Integrated LDO Output
Thermal Regulation for Charge Control
Charge Status Outputs for LED or System Interface Indicates Charge and Fault Conditions
Reverse Current, Short-Circuit, and Thermal Protection
Power Good (AC Adapter and USB Port Present) Status Outputs
Charge Voltage Options: 4.1V, 4.2V, or 4.36V
APPLICATIONS
Smart Phones and PDA
MP3 Players
Digital Cameras Handheld Devices
Internet Appliances
说明
The bqTINY III-series of devices are highly integrated Li-ion linear chargers and system power-path management devices targeted at space-limited portable applications. The bqTINY III-series offer integrated USB-port and DC supply (AC adapter), power-path management with autonomous power-source selection, power FETs and current sensors, high accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device.
The bqTINY III-series powers the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination and allows the system to run with an absent or defective battery pack.
