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SS6803BCSTB 데이터시트(PDF) 1 Page - Silicon Standard Corp. |
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1 / 12 page www.SiliconStandard.com 1 of 12 SS6803 Three-cell Lithium-Ion Battery Protection IC FEATURES Ultra-low quiescent current of 13 µA (Vcell = 3.5V). Ultra-low power-down current of 1.3 µA (Vcell = 2.3V). Wide supply voltage range: 2V to 18V. Precision over-charge protection voltage: 4.35V ±30mV for the SS6803A 4.30V ±30mV for the SS6803B 4.25V ±30mV for the SS6803C 4.20V ±30mV for the SS6803D Externally set over-charge, over-discharge and over-current delay time. Built-in cell-balancing bleeding network under over-charge condition. Three detection levels for over-current protection. APPLICATIONS Protection IC for three-cell lithium-ion battery pack. DESCRIPTION The SS6803 is designed to protect a lithium-ion battery from damage or degraded lifetime due to over-charging, over-discharging and over-current for three-cell lithium-ion battery powered systems such as notebook PCs. It provides the cell-balancing "bleeding" function to automatically discharge the over-charged cell until the over-charge condition is eliminated. Safe charging with full utilization is ensured by the accurate ±30mV over-charge detection. Four different specification values for over-charge protection voltage are provided for various protection requirements. The very low standby current represents little drain from the cell while in storage. TYPICAL APPLICATION CIRCUIT 1k 1M BATT+ FUSE R8 R4 R1 2k 1k 0.1 µF C4 VC1 SS6803 UD1 VCC OC CS OD 3 2 1 16 15 14 1M BAT1 0.1 µF NC 4 VC2 VC3 UD3 GND UD2 11 10 9 13 12 NC TI 6 TC 7 8 TD 5 R6 R5 BATT- R7 33k R3 BAT3 1M BAT2 C1 Q1 M2 M1 2K R2 0.1 µF C2 0.1 µF C3 CTD CTI CTC 82nF 2.2nF 82nF Protection Circuit for a Three-cell Lithium-Ion Battery Pack 12/29/2003 Rev.2.02 |
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