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SA1412 Datasheet(PDF) 3 Page - Silan Microelectronics Joint-stock |
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SA1412 Datasheet(HTML) 3 Page - Silan Microelectronics Joint-stock |
3 / 5 page SA1412 HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:2.2 2007.09.28 Http: www.silan.com.cn Page 3 of 5 (Continued) Characteristics Symbol Test condition Min. Typ. Max. Unit OC Pin Output Current IOCH VH=VL =4.5V 30 150 -- µA Overcurrent Detection Threshold Value VCS1 135 150 165 mV Overcurrent Short Threshold Value VCS2 0.35 0.45 0.55 V Overcurrent Release Load release: Load of 5M Ω or more between both battery pack pins Overcurrent Detection Delay Time 1 TOC1 7 12 18 ms Overcurrent Detection Delay Time 2 TOC2 -- 30 100 µs Overdischarge Detection Delay Time Tod 8 13 20 ms Overcharge Detection Dead Time Toch CTC=0.18Uf 0.5 1.0 1.5 s Start-Up Voltage VST VH=VL=2.5V -0.24 -0.12 -0.04 V PIN DESCRIPTIONS PIN DESCRIPTION Pin no. Pin name I/O Description 1 OC O Overcharge detection output pin 2 GD O Discharge control FET (N-ch) control output pin 3 CS I Overcurrent detection input pin 4 GND -- Ground pin, or lower cell load negative pole input pin. 5 TD -- Overcharge detection dead time setting pin 6 VL -- Connection pin for lower cell positive electrode side and upper cell negative electrode side. 7 VCC -- Power supply input pin 8 VH -- Upper cell positive electrode input pin FUNCTION DESCRIPTION This IC is a lithium ion battery (2-cell in-series type) protection IC. It has functions below: Overcharge detection, Overdischarge detection, Overcurrent detection. It controls the batteries charging or discharging by control the |
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