參數(shù)資料
型號(hào)： S-8261ABGBD-G3G-TF
廠商： Seiko Instruments Inc.
英文描述： GT 5C 2#0 3#12 SKT PLUG
中文描述： 電池保護(hù)IC單節(jié)包裝
文件頁(yè)數(shù)： 20/36頁(yè)
文件大?。?/td> 706K
代理商： S-8261ABGBD-G3G-TF
BATTERY PROTECTION IC FOR SINGLE-CELL PACK
S-8261 Series
Rev.1.9
_00
Seiko Instruments Inc.
20
7. Delay Circuits
The detection delay times are determined by dividing a clock of the approximately 3.5 kHz with the
counter.
Remark 1.
The detection delay time for overcurrent 2 (t
IOV2
) and load short-circuiting (t
SHORT
) start when
the overcurrent 1 (V
IOV1
) is detected. When the overcurrent 2 (V
IOV2
) or load short-circuiting
(V
SHORT
) is detected over the detection delay time for each of them (= t
IOV2
or t
SHORT
) after the
detection of overcurrent 1 (V
IOV1
), the S-8261 Series turns the FET off within t
IOV2
or t
SHORT
of
each detection.
DO pin
VM pin
V
DD
V
DD
Time
V
IOV1
V
SS
V
SS
V
IOV2
Overcurrent 2 detection delay time (t
IOV2
)
Time
t
D
0
≦
t
D
≦
t
IOV2
Figure 6
2.
When the overcurrent is detected and continues for longer than the overdischarge detection
delay time (t
DL
) without releasing the load, the condition changes to the power-down condition
when the battery voltage falls below the overdischarge detection voltage (V
DL
). When the
battery voltage falls below the overdischarge detection voltage (V
DL
) due to the overcurrent,
the S-8261 Series turns the discharging control FET off by the overcurrent detection. In this
case the recovery of the battery voltage is so slow that if the battery voltage after the
overdischarge detection delay time (t
DL
) is still lower than the over discharge detection
voltage (V
DL
), the S-8261 Series shifts to the power-down condition.
8. DP Pin
The DP pin is a test pin for delay time measurement and it should be open in the actual application. If a
capacitor whose capacitance is larger than 1000 pF or a resister whose resistance is less than 1 M
is
connected to this pin, error may occur in the delay times or in the detection voltages.
9. 0 V Battery Charging Function “Available”
This function is used to recharge the connected battery whose voltage is 0 V due to the self-discharge.
When the 0 V battery charge starting charger voltage (V
0CHA
) or higher is applied between EB
+
pin and
EB
pin by connecting a charger, the charging control FET gate is fixed to VDD pin voltage. When the
voltage between the gate and source of the charging control FET becomes equal to or higher than the
turn-on voltage due to the charger voltage, the charging control FET is turned on to start charging. At
this time, the discharging control FET is off and the charging current flows through the internal parasitic
diode in the discharging control FET. When the battery voltage becomes equal to or higher than the
overdischarge release voltage (V
DU
), the S-8261 Series enters the normal condition.
Caution Some battery providers do not recommend charging for completely self-discharged
battery. Please ask battery providers before determine whether to enable or inhibit the
0 V battery charging function.
Remark
The 0 V battery charge function has higher priority than the abnormal charge current detection
function. Consequently, a product with the 0 V battery charging function is enabled charges
a battery forcibly and abnormal charge current cannot be detected when the battery voltage is
low.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S-8261ABGBD-G3GTFG 制造商:Seiko Instruments Inc (SII) 功能描述:PROT LI-ION/LI-POL 4.275V 6PIN SNB(B) - Tape and Reel 制造商:Seiko Instruments Inc (SII) 功能描述:IC LI-ION BATT PROTECT SOT23-6
S-8261ABHBD-G3H-TF 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:BATTERY PROTECTION IC FOR SINGLE-CELL PACK
S-8261ABHBD-G3HTFG 制造商:Seiko Instruments Inc (SII) 功能描述:LITHIUM-ION BATTERY PROTECTION (1 CELL) - Tape and Reel 制造商:Seiko Instruments Inc (SII) 功能描述:IC LI-ION BATT PROTECT SOT23-6
S-8261ABIBD-G3I-TF 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:BATTERY PROTECTION IC FOR SINGLE-CELL PACK
S-8261ABIBD-G3ITFG 制造商:Seiko Instruments Inc (SII) 功能描述:PROT LI-ION/LI-POL 4.275V 6PIN SNB(B) - Tape and Reel 制造商:Seiko Instruments Inc (SII) 功能描述:IC LI-ION BATT PROTECT SOT23-6
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