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HB6298A-2009 fiches techniques PDF

Huatai Electronics - Switchmode Single-Cell/Two-Cell Li-ion/Li Polymer Battery Charger

Numéro de référence HB6298A-2009
Description Switchmode Single-Cell/Two-Cell Li-ion/Li Polymer Battery Charger
Fabricant Huatai Electronics 
Logo Huatai Electronics 





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HB6298A-2009 fiche technique
Huatai Electronics
HB6298A-2009.12.28
Switchmode Single-Cell/Two-Cell Li-ion/Li Polymer Battery Charger
1HB6298A functions
1.1Features
● High conversion efficiency charger for
1-cell/2-cell Li-ion/Li polymer battery
● 0.5% voltage accuracy
● Full charged voltage trimming by external
resistors
● Build-in battery detection
● 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℃
2Typical application circuit
1.2Applications
● Handheld devices, include medical
handhelds
● Portable-DVD,PDA,cell phones and smart
phones
● Portable instruments
● Self-charging battery packs
● Stand-alone chargers
1.3Introduction
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.
Figure2.1、HB6298A application circuit
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