Shenzhen Huatai Electronics Co., Ltd. |
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Outline
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 batterytemperature 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 medicalhandhelds
Portable-DVD,PDA,cell phones and smart phones
Portable instruments
Self-charging battery packs
Stand-alone chargers
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