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PDF T63H0006B Data sheet ( Hoja de datos )
| Número de pieza | T63H0006B | |
| Descripción | Li-Ion Battery Protector | |
| Fabricantes | Taiwan Memory Technology | |
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tm TE
CH
T63H0006B
Features
• Low supply current :
operating current : 3.0uA (TYP.)
Standby current : 0.15uA (TYP.)
(after detecting over-discharge)
www.DataSheet•4UH.cigomh accuracy detector Threshold :
Over-charge detector (Topt=25ºC) +/- 25mV
• Variety of detector threshold :
-Over-charge detector threshold
4.225V to 4.375V step of 0.005V
-Over-discharge detector threshold
2.4V to 2.6V step of 0.005V
• Built in protection circuit :
-Excess current protection
0.13V to 0.17V step of 0.04V
-Accuracy ±15%
• Output delay of over charge :
Time delay VDD=3.6V to 4.3V 110ms
(The result was measured from T63H0006B-AX)
• Output delay of over-discharg :
VDD=3.6V to 2.4V with built-in capacitor 10ms
• Small package SOT23-6/6-pin
Part Number Examples
Part No.
Over Over
charge charge
detection release
marking
Pack type
voltage voltage
T63H0006B-AX 4.25V 4.05V 006A SOT-23-6
T63H0006B-BX 4.35V 4.15V 006B SOT-23-6
T63H0006B-CX 4.30V 4.10V 006C SOT-23-6
T63H0006B-DX 4.28V 4.08V 006D SOT-23-6
…note
…. ….
….
Note : New model version and specific
characteristics may be order by customer.
T63H0006B
Li-Ion Battery Protector
General Description
The T63H0006B is protection IC for
over-charge / discharge of rechargeable one-cell
Lithium-ion(Li+) excess load current, further
include a short circuit protector for preventing
large external short circuit current.
Each of these IC is composed of three voltage
detectors, a reference unit, a delay circuit, a short
circuit protector, and a logic circuit. When
charging voltage crosses the detector threshold
from a low value to value higher than VDET1, the
output of Cout pin, the output of over-charge
detector/VD1, switches to low level, charger’s
negative pin level. After detecting over-charge the
VD1 can be reset and the output of Cout becomes
high when the VDD voltage is coming down to a
level lower than “VREL1”, or when a kind of
loading is connected to VDD after a charger is
disconnected from the battery pack while the VDD
level is in between “VDET1” and “VREL1” in the
T63H0006B.
The output of Dout pin, the output of
over-discharge detector/VD2, switches to low
level after internally fixed delay time passed, when
discharging voltage crosses the detector threshold
from a high value lower than VDET2. After
T63H0006B detect the over-discharge voltage,
connect a charger to the battery pack, and when the
battery supply voltage becomes higher than the
over-discharge detector threshold, VD2 is released
and the voltage of Dout becomes “H” level.
An excess load current can be sensed and cut off
after internally fixed delay time passed through the
built in excess current detector, VD3 with Dout
being enabled to low level. Once after detecting
excess current, the VD3 is released and Dout level
switches to high by detaching a battery pack from a
load system.
Further, short circuit protector makes Dout level
to low immediately with external short circuit
current and re-moving external short circuit leads
Dout level to high. After detecting over-discharge,
supply current will be kept extremely low by halt
some internal circuits operation. The output delay
of over-charge detectors can be set by connecting
external capacitors. Output type of Cout and Dout
are CMOS. 6-pin, SOT23-6 is available.
TM Technology Inc. reserves the right
P. 1
to change products or specifications without notice.
Publication Date: JUN. 2004
Revision:B
1 page  
tm TE
CH
VD3/Excess Current Detector, Short Circuit
Protector
Both of the excess current detector and short
circuit protector can work when both control
FETs are in “ON” state. When the V- pin
voltage is going up to a value between the short
protection voltage Vshort/VDD and excess
current threshold VDET3, the excess current
detector operates and further soaring of V- pin
www.DataSheetv4Uo.lctoamge higher than Vshort makes the short
circuit protector enabled. This leads the external
discharge control Nch MOSFET turn off with
the Dout pin being at “L” level.
An output delay time for the excess current
detector is internally fixed, 11ms typ. At
VDD=3.0V. Aquick recovery of V- pin level
from a value between Vshort and VDET3 within
the delay time keeps the discharge control FET
staying “H” state.
When the short circuit protector is enabled,
the Dout would be low and its delay time would
be 5us typ.
The V- pin has a built-in pulled down resistor,
typ. 130kOhm with connecting to the Vss pin.
After an excess current or short circuit
protection is detected, removing a cause of
excess current or external short circuit makes an
external discharge control FET to an “ON” state
automatically with the V- pin level being down
to the Vss level through pulled down resistor
built-in internally.
If VDD voltage would be higher than VDET2
at a time when the excess current is detected the
T63H0006B does not enter a standby mode, or
otherwise in case of lower VDD voltage than
VDET2 would lead the T63H0006B into a
standby.
After detecting short circuit the T63H0006B
will not enter a standby mode.
T63H0006B
Application Circuits
R1
100 ohm
+
C1
0.1uF
4
6
5
T63H0006B
2
C2
0.1uF
13
R2
1 k ohm
-
Application Hints
R1 and C1 will stabilize a supply voltage to
the T63H0006B. A recommended R1 value is
less than 100 Ohm. A larger value of R1 leads
higher detection voltage, makes some errors,
because of shoot through current flowed in the
T63H0006B.
R2 and C2 will stabilize a V- pin voltage. The
resetting from over-discharge with connecting a
charger possibly be disabled by larger value of
R2.
Recommended value is less than 1kOhm.
After over-charge detection even connecting
battery pack to a system probably could not
allow a system to draw load current by a larger
R2xC2 time constant in the T63H0006B.
Recommended C2 value is less than 1uF.
R1 and R2 may cause power consumption over
rating of power dissipation of the T63H0006B
and a total of “R1+R2” should be more than
1kOhm.
The time constants R1xC1 or R2xC2 must
have a relation as below:
R1xC1<=R2xC2
Because in case that R1xC1, time constant for
VDD pin, would be larger than R2xC2, time
constant for V- pin then the T63H0006B might
be into a standby mode after detecting excess
current or short circuit current.
TM Technology Inc. reserves the right
P. 5
to change products or specifications without notice.
Publication Date: JUN. 2004
Revision:B
5 Page | ||
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