tm
Features
TE
CH
T63H0006B
T63H0006B
• Low supply current :
operating current : 3.0uA (TYP.)
Standby current : 0.15uA (TYP.)
(after detecting over-discharge)
• High 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
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.
Part Number Examples
Part No.
Over
Over
charge charge
marking Pack type
detection release
voltage voltage
4.25V
4.35V
4.30V
4.28V
….
4.05V
4.15V
4.10V
4.08V
….
006A
006B
006C
006D
SOT-23-6
SOT-23-6
SOT-23-6
SOT-23-6
….
T63H0006B-AX
T63H0006B-BX
T63H0006B-CX
T63H0006B-DX
…note
Note : New model version and specific
characteristics may be order by customer.
TM Technology Inc. reserves the right
P. 1
to change products or specifications without notice.
Publication Date: JUN. 2004
Revision:B
TMT [ TAIWAN MEMORY TECHNOLOGY ]
