Outline
This IC are secondary protection IC using high voltage CMOS process for overcharge protection of the rechargeable Lithium-ion or Lithium-polymer battery. The high accuracy overcharge detection of each cell of the rechargeable 1-3-cell Lithium-ion or Lithium-polymer battery is possible. Each of these IC composed of four voltage detectors, reference voltage sources, oscillator, counter circuit and logical circuits.The ultra-small package SSON-6A is used to minimize footprints.
Product Series
For 1 to 3 cells secondary protection
Features
1. Range and accuracy of overcharge detection/hysteresis voltage
●Overcharge detection voltage 4.0V to 4.5V, 5mV step Accuracy±25mV
●Overcharge hysteresis voltage -500mV to -50mV Accuracy±50mV to 100mV
2. Range of Overcharge detection delay time
●Overcharge detection delay time 1ms to (1ms × 2n1) + (1ms × 2n2)
∗n1 and n2 can select two arbitrary integers between 0 to 13. (However n1 ≠ n2)
3. Low current consumption
●Typ. 1.5µA Max. 3.0µA (Vcell=4.0V)
●Typ. 0.15µA Max. 0.30µA (Vcell=2.3V)
Specifications
| Product name |
Package | Overcharge detection voltage [V] |
Overcharge hysteresis voltage （V1~V3） [V] |
Overcharge detection delay time [s] |
|---|
