MM3684 Series

The MM3684 series are protection IC using high voltage CMOS process for overcharge, secondary overcharge, overdischarge, overcurrent and temperature protection of the rechargeable Lithium-ion or Lithium-polymer battery. The overcharge, overdischarge, discharging overcurrent, charging overcurrent, temperature of the rechargeable 3 to 5 cells Lithium-ion or Lithium-polymer battery can be detected. The internal circuit of IC is composed by the voltage detector, the reference voltage source, delay time control circuit, and the logical circuit, etc.

For 3 to 5cells

1) Range and accuracy of detection/release voltage
●Overcharge detection voltage 1 (0V output) 3.6V to 4.5V, 5mV steps Accuracy ±25mV
●Overcharge release voltage 1 (0V output) 3.4V to 4.5V, 50mV steps Accuracy ±50mV
●Overcharge detection voltage 2 (PF output) 3.6V to 4.5V, 5mV steps Accuracy ±25mV
●Overdischarge detection voltage 1 2.0V to 3.0V, 50mV steps Accuracy ±80mV
●Overdischarge detection voltage 2 2.0V to 3.0V, 50mV steps Accuracy ±100mV
●Overdischarge release voltage 2.0V to 3.5V, 50mV steps Accuracy ±100mV
●Discharging overcurrent detection voltage 1 30mV to 300mV, 5mV steps Accuracy ±15%
●Discharging overcurrent detection voltage 2 Twice or 4 times of discharging overcurrent 1 Accuracy ±20%
●Short detection voltage 4 or 8 times of discharging overcurrent 1 Accuracy ±100mV
●Charging overcurrent detect voltage -300mV to -20mV, 5mV steps Accuracy ±10mV

2) Range of detection delay time
●Overcharge detection delay time 1 Setting by a capacitor of COV pin. Accuracy ±50%
●Overcharge release delay time 1 Setting by a capacitor of COV pin. Accuracy ±50%
●Overcharge detection delay time 2 Setting by a capacitor of CPF pin. Accuracy ±50%
●Overdischarge detection delay time Setting by a capacitor of CUV pin. Accuracy ±50%
●Overdischarge release delay time Setting by a capacitor of CUV pin. Accuracy ±50%
●Discharging overcurrent detection delay time 1 Setting by a capacitor of DCOC pin. Accuracy ±50%
●Discharging overcurrent detection delay time 2 Setting by a capacitor of DCOC pin. Accuracy ±50%
●Short detection delay time Selection from 100µs, 200µs, 300µs Accuracy -50%, +100%
●Discharging overcurrent release delay time Setting by a capacitor of DCOC pin. Accuracy ±50%
●Charging overcurrent detection delay time Setting by a capacitor of CCOC pin. Accuracy ±50%
●Charging overcurrent release delay time Setting by a capacitor of CCOC pin. Accuracy ±50%
●Temperature protection detection ON time Setting by a capacitor of CIOT pin. Accuracy ±50%
●Temperature protection detection OFF time Setting by a capacitor of CIOT pin. Accuracy ±50%

3) The setting for three cell , for four cell , and for fi ve cell protection can be set with the SEL1,2 pin.

4) Threshold of over-discharge detection can be switched to over-discharge detection voltage 1, 2 at the DVSEL terminal.

5) 0V battery charge function Selection from ”Prohibition” or ”Permission”

6) Power save mode built-in

7) Achieve low consumption by making the temperature detection for regulator and temperature detection circuit to intermittent operation

8) Low current consumption
●VDD pin current consumption (Vcell=4.3V) Typ. 15.0µA, Max. 25.0µA
●VDD pin current consumption (Vcell=3.5V) Typ. 10.0µA, Max. 20.0µA
●VDD pin current consumption at power save(Vcell=1.8V) Typ. 3.0µA, Max. 6.0µA
●V5 pin current consumption (Vcell=4.3V) Typ. 1.0µA, Max. 2.0µA
●V5 pin current consumption (Vcell=3.5V) Typ. 0.8µA, Max. 1.5µA
●V5 pin current consumption (Vcell=1.8V) Max. 0.5µA

Package

• VSOP-24A