MM3508B Series

Lithium-Ion Battery protection IC using high voltage CMOS process for overcharge, overdischarge and overcurrent protection of the rechargeable Lithium-ion or Lithium-polymer battery. The overcharge, overdischarge, discharging overcurrent, charging overcurrent, and short protection of the rechargeable Lithium-ion or Lithium-polymer battery can be detected. Each of these IC composed of four voltage detectors, short detection circuit, reference voltage sources, oscillator, counter circuit and logical circuits.

Outline

MM3508B series is a double protection IC for 2 to 4 serial cells lithium-ion / lithium-polymer rechargable secondary battery.It detects battery voltage for each cell.Each of these IC composed of four voltage detectors, reference voltage sources, oscillator, counter circuit and logical circuits.

For 2 to 4 cells secondary protection
1. Range and accuracy of overcharge detection/hysteresis voltage
　●Overcharge detection voltage 4.0V to 4.5V, 5mV step Accuracy±20mV
　●Overcharge hysteresis voltage -500mV to -50mV, 50mV step Accuracy±20%

2. Range of 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. 3.5µA, Max. 5.0µA (Vcell=4.0V)
　●Typ. 0.15µA, Max. 0.30µA (Vcell=2.3V)

Click the arrow icon in the table below to switch from ascending to descending order.

scroll

Product name	Package	Stand by function	Overcharge detection voltage [V]	Overcharge hysteresis voltage （V4） [V]	Overcharge hysteresis voltage （V1~V3） [V]	Overcharge detection delay time [s]
MM3508B01RRE	SSON-6A	〇	4.450	0.500	0.500	5.000
MM3508B06RRE	SSON-6A	〇	4.350	0.620	0.270	4.000
MM3508B07RRE	SSON-6A	〇	4.300	0.620	0.270	4.000
MM3508B08RRE	SSON-6A	〇	4.450	0.620	0.270	4.000
MM3508B09RRE	SSON-6A	〇	4.500	0.620	0.270	4.000
MM3508B10RRE	SSON-6A	〇	4.400	0.620	0.270	4.500