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參數(shù)資料
| 型號(hào)： | T63H0002A-CX |
| 廠商： | TM Technology, Inc. |
| 英文描述： | T63H0002A |
| 中文描述： | T63H0002A |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大小： | 165K |
| 代理商： | T63H0002A-CX |
TE
CH
tm
T63H0002A
TM Technology Inc. reserves the right
P. 5
Publication Date: JUL. 2002
to change products or specifications without notice. Revision:A
OPERATION
VD1/Over-Charge Detector
The VD1 monitors VDD pin voltage. When the
VDD voltage crosses over charge detector threshold
VDET1 from a low value to a value higher than the
VDET1, the VD1 can sense a over-charging and an
external charge control Nch-MOS-FET turns to
“OFF” with Cout pin being at “L” level.
There can be two cases to reset the VD1 making the
Cout pin level to “H” again after detecting
over-charge. Resetting the VD1 can make charging
system allowable to resumption of charging process.
The first case is in such conditions that a time when
the VDD voltage is coming down to a level lower
than “VREL1”. While in the second case,
connecting a kind of loading to VDD after
disconnecting a charger from the battery pack can
make the VD1 resetting when the VDD level is in
between “VDET1” and “VREL1”.
After detecting over-charge with the VDD voltage of
higher than VDET1, connecting system load to the
battery pack makes load current allowable through
parasitic diode of external charge control FET. The
Cout level would be high when the VDD level is
coming down to a level below the VDET1 by
continuous drawing of load current.
An output delay time for over-charge detection can
be set by external capacitor C3 connecting between
the Vss pin and Ct pin. The external capacitor can
make a delay time from a moment detecting
over-charge to a time output a signal which enables
charge control FET turn off.
When the VDD level is going up to a higher level
than VDET1 if the VDD voltage would be back to a
level lower than the VDET1 within a time period of
the output delay time, VD1 would not output a signal
for turning off the charge control FET.
A level shifter incorporated in a buffer driver for the
Cout pin makes the “L” level of Cout pin to the V-
pin voltage and the “H” level of Cout pin is set to
VDD voltage with CMOS buffer
VD2/Over-Discharge Detector
The VD2 is monitoring a VDD pin voltage. When
the VDD voltage crosses the over-discharge detector
threshold VDET2 from a high value to a value lower
than the VDET2, the VD2 can sense an
over-discharging and the external discharge control
Nch MOSFT turns to “OFF” with the Dout pin being
at “L” level.
To reset the VD2 with the Dout pin level being “H”
again after detecting over-discharge it is necessary to
connect a charger to the battery pack for T63H0002.
When the VDD voltage stays under over-discharge
detector threshold VDET2 charge current can flow
through parasitic diode of external discharge control
MOSFET, then after the VDD voltage comes up to a
value larger than VDET2, Dout becomes “H” and
discharging process would be able to advance
through ON state MOSFET for discharge control.
Connecting a charger to the battery pack makes the
Dout level being “H” instantaneously when the
VDD voltage is higher than VDET2.
Besides, for T63H0002, when a cell voltage reaches
equal or more than over-discharge released voltage,
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| T63H0002A-DX | T63H0002A |
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相關(guān)代理商/技術(shù)參數(shù) |
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| T63H0002A-DX | 制造商:TMT 制造商全稱:TMT 功能描述:T63H0002A |
| T63H0006B | 制造商:TMT 制造商全稱:TMT 功能描述:Li-Ion Battery Protector |
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| T63H0006B-BX | 制造商:TMT 制造商全稱:TMT 功能描述:Li-Ion Battery Protector |
| T63H0006B-CX | 制造商:TMT 制造商全稱:TMT 功能描述:Li-Ion Battery Protector |
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