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T63H0002A Schematic ( PDF Datasheet ) - Taiwan Memory Technology

Teilenummer T63H0002A
Beschreibung Li-Ion Battery Protector
Hersteller Taiwan Memory Technology
Logo Taiwan Memory Technology Logo 




Gesamt 8 Seiten
T63H0002A Datasheet, Funktion
tmCTHE
T63H0002A
T63H0002A
Li-Ion Battery Protector
Features
Low supply current
Supply current
TYP. 5.0uA
Standby current (after detecting over-discharge) TYP. 0.3uA
www.DataSheetH4Ui.gchomaccuracy detector
Over-charge detector(Topt=25ºC)
+/- 25mV
Threshold
Over-charge detector (Topt=0 to 50ºC)
+/- 30mV
Over-discharge detector
+/- 2.5%
Variety of detector threshold Over-charge detector threshold
4.0V to 4.4V step of 0.005V
Over-discharge detector threshold 2.0V to 3.0V step of 0.005V
Built in protection circuit
Excess current protection
0.04V to 0.32V step of 0.04V
Accuracy
±15%
Output delay of over charge Time delay at C3=0.01uF & VDD=4.3V
170mS note1
Output delay of over-discharg
VDD=2.4V with built-in capacitor
10mS
Small package
SOT23-6/6-pin
note1: The result was measured from T63H0002A-AX
Part Number Examples
Part No.
Over charge detection
voltage
T63H0002A-AX
4.25V
T63H0002A-BX
4.35V
T63H0002A-CX
4.30V
T63H0002A-DX
*note1
4.28V
….
note1: New model version and specific
characteristics may be order by customer.
Over charge release
voltage
4.05V
4.15V
4.10V
4.08V
….
marking
002A
002B
002C
002D
Pack type
SOT-23-6
SOT-23-6
SOT-23-6
SOT-23-6
….
General Description
The T63H0002A 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
TM Technology Inc. reserves the right
P. 1
to change products or specifications without notice.
Publication Date: JUL. 2002
Revision:A






T63H0002A Datasheet, Funktion
tmCTHE
T63H0002A
or VDET2, over-discharge condition can be also
released.
An output delay time for the over-discharge
detection is fixed internally, tVDET2 =10ms typ. At
VDD=2.4V. When the VDD level is going down to a
lower level than VDET2 if the VDD voltage would
be back to a level higher than the VDET2 within a
www.DataSheett4iUm.ceopmeriod of the output delay time, VD2 would not
output a signal for turning off the discharge control
FET.
After detection of an over-discharge by VD2, supply
current would be reduced to typ. 0.3uA at
VDD=2.0V and into standby, only the charger
detector is operating.
The output type of Dout pin is CMOS having “H”
level of VDD and “L” level of Vss.
VD3/Excess Current Detector, Short Circuit Protector
Both of the excess current detector and short circuit The V- pin has a built-in pulled down resistor, typ.
protector can work when both control FETs are in
100kOhm with connecting to the Vss pin.
“ON” state. When the V- pin voltage is going
After an excess current or short circuit protection is
up to a value between the short protection voltage
detected, removing a cause of excess current or
Vshort/VDD and excess current threshold VDET3, external short circuit makes an external discharge
the excess current detector operates and further
control FET to an “ON” state automatically with the
soaring of V- pin voltage higher than Vshort makes V- pin level being down to the Vss level through
the short circuit protector enabled. This leads the
pulled down resistor built-in internally.
external discharge control Nch MOSFET turn off
If VDD voltage would be higher than VDET2 at a
with the Dout pin being at “L” level.
time when the excess current is detected the
An output delay time for the excess current detector T63H0002 does not enter a standby mode, or
is internally fixed, 13ms typ. At VDD=3.0V. Aquick otherwise in case of lower VDD voltage than
recovery of V- pin level from a value between
VDET2 would lead the T63H0002 into a standby.
Vshort and VDET3 within the delay time keeps the After detecting short circuit the T63H0002 will not
discharge control FET staying “H” state.
enter a standby mode.
When the short circuit protector is enabled, the Dout
would be low and its delay time would be 5us typ.
TM Technology Inc. reserves the right
P. 6
to change products or specifications without notice.
Publication Date: JUL. 2002
Revision:A

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