R5471K Series [ Non-promotion Products ]
High Accuracy Li-ion/polymer 1Cell protector IC
The R5471 Series are high input voltage CMOS-based protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion (Li-ion) / Lithium polymer excess load current, further include a short circuit protector for preventing large external short circuit current and excess charge/discharge-current.
Each of these ICs is composed of four voltage detectors, reference units, a delay circuit, a short circuit protector, an oscillator, a counter, and a logic circuit.
|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|
|Standby Current (Is)||Max.0.1µA|
|High accuracy detector threshold||Over-charge||±10 mV (0 to 50°C)|
|Variety of detector threshold||Over-charge||4.1V to 4.5V (0.005V steps)|
|Over-discharge||2.0V to 3.0V (0.1V steps)|
|Excess discharge-current||0.05V to 0.13V (0.005V steps)|
|Excess charge-current||-0.05 to -0.15V (0.005V steps)|
|Internal fixed Output delay time||Over-charge detector Output Delay||1.0s|
|Over-discharge detector Output Delay||Typ.20ms|
|Short Circuit detector Output Delay||Typ.250µs|
|Output Delay Time Shortening Function||At COUT is “H”, if V-level is set at –2.0V, the Output Delay time of detector and release the over-charge and over-discharge can be reduced.
Delay time for over-charge becomes about 1/110 of normal state.
- •Li-ion / Li polymer protector of over-charge, over-discharge, excess discharge-current, excess charge-current for battery pack
- •High precision protectors for cell-phones and any other gadgets using on board Li-ion / Li polymer battery
R5471K Series will be discontinued at the end of March, 2015. New adoption is not recommended.