MM3766 Series

The MM3766 series are 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 rechargeable two cells
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.

For 2-cells

(1) Range and accuracy of detection and release voltage
　● Overcharge detection voltage　3.6V to 4.5V, 5mV Step ±15mV
　● Overcharge release voltage　3.4V to 4.5V, 50mV Step　±30mV
　● Overdischarge detection voltage　2.0V to 3.0V, 50mV Step　±35mV
　● Overdischarge release voltage　2.0V to 3.5V, 50mV Step　±50mV
　● Discharging overcurrent detection voltage 1　20mV to 300mV, 5mV Step　 ±ΔV　※1
　● Discharging overcurrent detection voltage 2 40mV to 600mV, 10mV Step　±ΔV　※1
　● Short detection voltage　Selection from 0.7V, 0.8V, 0.9V　±300mV
　● Charging overcurrent detection voltage　-300mV to -40mV, 5mV Step　±ΔV　※1

(2) Range of detection delay time
　● Overcharge detection delay time Selection from 256ms to 4.6s
　● Overdischarge detection delay time　Selection from 8ms to 2s
　● Discharging overcurrent detection delay time 1　Selection from 8ms to 512ms
　● Discharging overcurrent detection delay time 2　Selection from 0.5ms to 6ms
　● Charging overcurrent detection delay time　Selection from 4ms to 64ms
　● Short detection delay time　300usec fixed

(3) 0V battery Charge functionSelectable "Permission" or "inhibition"

(4) Current consumption
　● Current consumption of VDD pin(Vcell=4.0V)　Typ. 4.0uA Max. 8.0uA
　● Current consumption of VDD pin(Vcell=2.0V)　Max. 0.1uA（In case Overdischarge latch function Enable.）
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　Max. 2.5uA（In case Overdischarge latch function Disable.）
　● Current consumption of VBL pin (Vcell=4.0V)　Min. -0.3uA, Max. 0.3uA

Package

• SOT-26B