HB6266--Switch Mode Single Li+ Battery Charge and BOOST Discharge ControllerOutline
The HB6266 is a high-efficiency synchronous Li-ion and Li-polymer battery charge and discharge controller targeted at power management applications of portable equipment.
The HB6266 offers high-accuracy voltage and current regulation, charge preconditioning, charge status, and charge termination, and discharge part automatically detects the load into standby mode and offers battery low alarm.
The HB6266 charges the battery in three phases: pre-charge, constant current and constant voltage, constant current is decided by the external resistance, and the constant voltage can be fine-tuned by external resistance.
The HB6266 integrates input current limit loop, dynamic adjustment of the current distribution according to the load, and offers rapid response and over current shutdown functions.
The HB6266 indicates the remaining capacity of battery in charge or discharge state effectively. The HB6266 can drive LED flashlight under the control of single Key.
The HB6266 combines battery temperature detection, charge time limit, Cycle-by-cycle current limit, and Boost output over current, over voltage and short circuit protection to ensure chip safety at work.
Features
Synchronous High-efficiency Buck charge controller for single Li+ and Li-Polymer Battery
Synchronous High-efficiency Boost discharge controller for battery power
Input Maximum Voltage of 10V
Battery Discharge as low as 3V
0.5% Charge Voltage Accuracy
1.5% Boost Discharge Voltage Accuracy
Charge Enable and Current Setup control on ISET pin
Singe Key with multi-Function
Switch from Boost mode to Standby Mode automatically according to the load
Total standby current as low as 10uA
ILOAD pin discharge current standby threshold set
Constant Charge Voltage fine-tuned by External Resistance
Integrated Soft Start
Integrated Boot-Strap Diode
Integrated Peak Current Mode Compensation
750KHz Switch Frequency
Charge States and Battery power display
Integrated max 100mA LED Driver
Battery Short Detection and Protection
Integrated Over Temperature Shutdown
Battery Charge Over Voltage Protection
Input Power Current Limit and Over Current Protection
Cycle-by-cycle Current Limit
Boost Output Over Current Protection
External Charge Time Setup
Integrated Input Under-Voltage and Over-Voltage Protection
Temperature range: -40℃~125℃
TSSOP-24 or QFN-24 Package
Application
Handheld Equipment
PDVD,PDA and Smartphone
Power Management
