Features: • 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-pinPinout
Specifications
| Symbol |
Description |
Rating |
Unit |
| VDD |
Supply voltage |
|
-0.3 to 20 |
V |
V-
|
Input Voltage |
|
VDD-28 to VDD+0.3
|
V |
Vcout
Vdout |
Output voltage
|
|
VDD-28 to VDD+0.3
Vss-0.3 toVDD+0.3
|
V |
| PD |
Power dissipation |
150 |
mA |
| TSTG |
Storage Temperaturerange |
-55 to 125 |
°C |
| Topt |
Operating temperature range |
-40 to85 |
°C |
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. DescriptionThe 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 of T63H0006B 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.
T63H0006B Data Sheet
