The R5461K Series are high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable two-cell Li-ion/Lithium polymer, further include an alarm function and a short protection for preventing large external short circuit current and the protection circuits against the excess discharge-current and excess charge current.
Each of these ICs is composed of detectors, a temperature detector, reference units, a delay circuit, a short circuit protector, an oscillator, a counter, and logic circuits. The signal is outputted before detecting over-charge due to having an alarm function.
They are settable for normal, high and low temperature. So they can make it safer to charge a battery. The Over-charge detector threshold and the alarm detector threshold are high accuracy such as +10mV/-15mV. DFN(PLP)2527-10 package is available.
|Manufactured with High Voltage Tolerant Absolute Maximum Rating Process||Supply Voltage (VDD)||12V (Absolute Maximum Rating)|
|Charge Negative Input voltage (V-)||-30V (Absolute Maximum Rating)|
|Low supply current||Supply Current (IDD)||Typ.4.0µA (G Version)
Typ.5.0µA (C Version)
|Standby Current (Is)||Typ.0.1µA|
|High accuracy detector threshold||Alarm||+10mV/-15mV (0∼60°C)|
|Variety of detector threshold||Alarm||3.2V to 4.5V (0∼45°C)
3.1V to 4.4V (45∼60°C)
|Over-charge||3.6V to 4.3V (0∼50°C)|
|Over-discharge||2.0V to 3.0V|
|Excess Discharge-current||0.05V to 0.24V|
|Excess Charge-current||-0.22V to -0.1V|
|Internal fixed Output delay time||Alarm||Typ.6ms|
|Alarm threshold can be changed by the temperature||Alarm temperature||45°C|
|Output Delay Time Shortening Function||At COUT is "H", if V- is set at -1.6V, the Output Delay time of detector and release for the over-charge and over-discharge can be reduced.|