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TS2207AB Fiches technique(PDF) 1 Page - Taiwan Semiconductor Company, Ltd |
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TS2207AB Fiches technique(HTML) 1 Page - Taiwan Semiconductor Company, Ltd |
1 / 6 page TS2207A/B series 1-6 2003/12 rev. B TS2207A/B Li-Ion Battery Protector Ideal for One-Cell Rechargeable Li-Ion Battery General Description The TS2207A/B series are protection ICs design to safe guard one-cell Lithium-ion battery pack against over charge/discharge, over current and short circuit. The TS2207A/B series use advanced high voltage CMOS process to provide high accuracy voltage detection and low current consumption. The TS2207A/B series incorporate a reference unit and three voltage detectors. During charging process, when the cell voltage(VDD) is charged to a value higher than the over-charge threshold voltage (VC1), the over charge detector (COM1) will switch the output pin (COUT) to a low level within a delay time (tC1), and thus turning off the MOSFET connected to the charging path. The COUT pin may change to high level again when the VDD voltage falls below “VC1-VHYS”, or when VDD falls below VC1 while the charger is disconnected from the battery pack. During the discharging process, when the VDD voltage drops to a value lower than the over-discharge threshold voltage (VD1), the over-discharge detector (COM2) will switch DOUT to low level within a delay time (tD1), and thus turning off the MOSFET connecting the discharging path. In the mean time, the TS2207A/B series will enter a low current standby mode. Once into standby mode, the system can only be released from standby mode right after the battery pack is connected to a charger. The conditions of over current and short circuit protection are both determined by the voltage at the V- pin. As the voltage of V- pin reaches a higher value than VOC, which indicates an undesirable large current is flowing through the path, DOUT will be switched to a low level and the path is cutoff after internally pre-set delay time (tOC) elapses. In the case of short circuit, i.e. V- rises above VSHORT, the path will also be cutoff but with almost no delay time. Once the over current or factors contributing to short circuit is removed, the built-in resistor at the V- pin, typically 100kΩ, will pull V- down to VSS and bringing the IC back to normal operation. Together with the application circuit, the TS2207A/B will function as a consummate protector, which promotes safe usage and the sustainability of Li-ion battery packs. Ordering Information Note: Marking BXX, XX is wafer and assembly lot code (A~Z & 1~9) Part No. Threshold Voltage Reel TS2207ACX6 4.30V ~ 4.40V Black TS2207BCX6 4.23V ~ 4.33V White Features Low current consumption Supply current 3uA (typ) and standby current 0.6uA High withstand voltage up to 22V (VDD ~ V-) High accuracy voltage detection Over charge detector: ± 50mV Over discharge detector: ± 3.2% Over current and short circuit protection Small package of SOT-26 Applications Over-charge and over-discharge protection for Li-ion cell pack High precision protectors for cell-phones and other gadget using on board Li-ion cell battery Pin Description No. Symbol Description 1 DOUT Output of over discharge detection 2 V - Pin for charger negative input 3 COUT Output of over charge detection 4 CEXT Pin for external capacitor Setting COM1 delay time 5 VDD Power supply 6 VSS Ground Pin assignment 1. DOUT 2. V - 3. COUT 4. CEXT 5. VDD 6. VSS |
Numéro de pièce similaire - TS2207AB |
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Description similaire - TS2207AB |
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