Switchmode Single-Cell/Two-Cell Li-ion/Li Polymer Battery ChargerOutline
HB6298A is an integrated 1-cell/2-cell Li-ion/Li polymer switch-mode charge management device, targeted at a wide range of portable applications. HB6298A offers integrated power FET, high-accuracy current and voltage regulation, charge preconditioning, charge status, and charge termination, in a small TSSOP20 package. HB6298A charges the battary in three phase: preconditioning, constant current(CC), and constant voltage(CV). The charge current is programmable with an external resistor up to 1.5A. HB6298A features cycle-by-cycle current limit, charge current thermal foldback and short circuit protection to guarantee safe operation. Additional features include NTC thermistor interface to monitor the battery temperature.
Features
●High conversion efficiency charger for 1-cell/2-cell Li-ion/Li polymer battery
● Build-in battery detection
● 0.8% voltage accuracy
● Full charged voltage trimming by external resistors
● Integrated power MOSFET
● Soft starting
● 300kHz PWM Oscillator frequency
● Programmable charge current up to 1.5A
● Reverse leakage protection prevents battery drainage
●NTC Thermistor interface for battery temperature monitor
● Status outputs for LED
● Cycle-by-cycle current limit, charge current thermal foldback , short circuit protection
● 18V absolute maximum voltage rating on IN pins
● Ambient temperature range: -20℃～70℃
Application
● Handheld devices, include medical handhelds
● Portable-DVD,PDA,cell phones and smart phones
● Portable instruments
● Self-charging battery packs
● Stand-alone chargers
