MM3722 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

MM3722 series are Li-ion battery protection IC and detect charge current / discharge current with high precision by current sensing resistor (Rsns). In the One-cell battery pack, on resistance of the FET SW has been used for over-current/short-current detection. MM3722 realize over-current/short-current protection with high accuracy and with no temperature dependence by using a chip resistor.

For one-cell
1. Range and accuracy of detection voltage
●Overcharge detection voltage 3.6V to 5.0V, 5mV step Accuracy±20mV
●Overcharge release voltage Vdet1-0.2V to Vdet1, 5mV step Accuracy±30mV
●Overdischarge detection voltage 2.0V to 3.0V, 50mV step Accuracy±35mV
●Overdischarge release voltage 2.0V to 3.0V, 50mV step Accuracy+65/-35mV (In case Vdet2=Vrel2)
Accuracy+90/-65mV (In case Vdet2≠Vrel2)
●Discharging overcurrent detection voltage 20mV to 150mV, 1mV step Accuracy±Δ ※1
●Charging overcurrent detection voltage -150mV to -20mV, 1mV step Accuracy±Δ ※1
●Short detection voltage1 40mV to 250mV, 1mV step Accuracy±Δ ※2
●Short detection voltage2 VDD-0.9V Accuracy±300mV
●0V battery charge inhibition battery voltage 1.3V to 1.8V/0.1V step Accuracy±100mV
0.9V Accuracy±300mV

2. Delay time setting
●Overcharge detection delay time 256ms to 4.6s
●Overdischarge detection delay time 8ms to 256ms
●Discharging overcurrent detection delay time 8ms to 256ms
●Charging overcurrent detection delay time 6ms to 64ms
●Short detection delay time 250µs to 400µs

3. 0V battery Charge functionSelectable ”Permission” or ”Inhibition”

4. Current consumption
●Normal mode Typ. 3.0µA, Max. 6.0µA
●Stand-by mode Max. 0.1µA (In case Overdischarge latch function Enable)
Max. 0.6µA (In case Overdischarge latch function Disable)

*1 Accuracy of overcurrent detection voltage

*2 Accuracy of Short detection voltage1

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

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Product name	Package	0V battery charge function	Overcharge release function	Overdischarge release function	Discharging overcurrent release function	Overcharge detection voltage [V]	Overcharge release voltage [V]	Overdischarge detection voltage [V]	Overdischarge release voltage [V]	Discharging overcurrent detection voltage [V]	Charging overcurrent detection voltage [V]	Short detection voltage [V]	Overcharge detection delay time [s]	Overcharge release delay time [ms]	Overdischarge detection delay time [ms]	Overdischarge release delay time [ms]	Discharging overcurrent detection delay time [ms]	Discharging overcurrent release delay time [ms]	Charging overcurrent detection delay time [ms]	Charging overcurrent release delay time [ms]	Short detection delay time [ms]
MM3722AC1YRE	SON-6C	Prohibition	voltage	voltage	voltage	4.425	4.225	2.500	2.900	0.032	-0.0200	0.060	1.020	16.0	96.0	1.0	12.0	1.00	10.0	1.0	0.300
MM3722AJ1YRE	SON-6C	Permission	voltage	voltage	voltage	4.425	4.225	2.500	2.900	0.036	-0.0200	0.060	1.020	16.0	96.0	1.0	12.0	1.00	10.0	1.0	0.300
MM3722AJ2RRE	SSON-6J	Permission	voltage	voltage	voltage	4.475	4.275	2.500	2.900	0.036	-0.0200	0.060	1.020	16.0	96.0	1.0	12.0	1.00	10.0	1.0	0.300
MM3722AJ4RRE	SSON-6J	Permission	voltage	voltage	voltage	4.470	4.270	2.500	2.900	0.049	-0.0310	0.160	1.020	16.0	125.0	1.0	16.0	1.00	8.0	1.0	0.250
MM3722AJ4YRE	SON-6C	Permission	voltage	voltage	voltage	4.470	4.270	2.500	2.900	0.049	-0.0310	0.160	1.020	16.0	125.0	1.0	16.0	1.00	8.0	1.0	0.250
MM3722AM1RRE	SSON-6J	Prohibition	voltage	voltage	voltage	4.475	4.275	2.500	2.900	0.032	-0.0200	0.060	1.024	16.0	96.0	1.0	12.0	1.00	10.0	1.0	0.300
MM3722AM5RRE	SSON-6J	Prohibition	voltage	voltage	voltage	4.475	4.275	2.600	3.000	0.050	-0.0300	0.180	1.024	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722AM6YRE	SON-6C	Prohibition	voltage	voltage	voltage	4.475	4.275	2.500	2.900	0.027	-0.0210	0.090	1.020	16.0	96.0	1.0	12.0	1.00	10.0	1.0	0.300
MM3722AM7RRE	SSON-6J	Prohibition	voltage	voltage	voltage	4.500	4.300	2.600	3.000	0.040	-0.0350	0.180	1.024	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722AM9RRE	SSON-6J	Prohibition	voltage	voltage	voltage	4.590	4.390	2.500	2.900	0.050	-0.0500	0.240	1.024	16.0	32.0	1.0	20.0	1.00	32.0	1.0	0.500
MM3722AMBRRE	SSON-6J	Prohibition	voltage	voltage	voltage	4.600	4.400	2.500	2.900	0.065	-0.0500	0.210	1.024	16.0	32.0	1.0	20.0	1.00	32.0	1.0	0.500
MM3722AMCRRE	SSON-6J	Prohibition	voltage	voltage	voltage	4.600	4.400	2.100	2.300	0.065	-0.0500	0.210	1.024	16.0	32.0	1.0	20.0	1.00	32.0	1.0	0.500
MM3722CM1RRE	SSON-6J	Prohibition	voltage	Latch	voltage	4.275	4.075	2.400	2.400	0.034	-0.0220	0.180	1.024	16.0	20.0	1.0	32.0	4.00	16.0	1.0	0.250
MM3722CM2RRE	SSON-6J	Prohibition	voltage	Latch	voltage	4.380	4.180	2.400	2.400	0.034	-0.0220	0.180	1.024	16.0	20.0	1.0	32.0	4.00	16.0	1.0	0.250
MM3722EF1RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.475	4.475	2.800	2.800	0.030	-0.0250	0.180	1.024	16.0	20.0	1.0	12.0	1.00	10.0	1.0	0.250
MM3722EM1RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.275	4.275	2.300	2.300	0.035	-0.0250	0.060	1.024	16.0	96.0	1.0	12.0	1.00	10.0	1.0	0.300
MM3722EM2RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.275	4.275	2.200	2.200	0.035	-0.0250	0.060	1.024	32.0	256.0	1.0	24.0	1.00	20.0	1.0	0.530
MM3722EM3RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.275	4.275	2.300	2.300	0.020	-0.0200	0.060	1.024	16.0	768.0	1.0	704.0	1.00	10.0	1.0	0.300
MM3722EM4RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.275	4.275	2.200	2.200	0.020	-0.0200	0.060	1.024	32.0	1280.0	1.0	832.0	1.00	20.0	1.0	0.530
MM3722EN1RRE	SSON-6J	Permission	Latch	Latch	voltage	4.525	4.525	2.700	2.700	0.020	-0.0250	0.075	1.024	16.0	96.0	1.0	640.0	1.00	8.0	1.0	0.300
MM3722EN2RRE	SSON-6J	Permission	Latch	Latch	voltage	4.250	4.250	2.500	2.500	0.024	-0.0200	0.060	1.024	16.0	128.0	4.0	256.0	4.00	8.0	4.0	0.280
MM3722EN3RRE	SSON-6J	Permission	Latch	Latch	voltage	4.525	4.525	2.500	2.500	0.020	-0.0250	0.075	1.024	16.0	96.0	1.0	640.0	1.00	8.0	1.0	0.300
MM3722JJ1RRE	SSON-6J	Permission	Latch	voltage	voltage	4.475	4.475	2.600	3.000	0.021	-0.0210	0.050	1.024	16.0	64.0	1.0	16.0	1.00	8.0	1.0	0.280
MM3722KF1RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.280	4.280	2.400	2.400	0.032	-0.0300	0.180	1.000	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722KF2RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.425	4.425	2.400	2.400	0.034	-0.0220	0.180	1.000	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722KF3RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.425	4.425	2.800	2.800	0.040	-0.0300	0.180	1.000	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722KF4RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.425	4.425	2.600	2.600	0.040	-0.0300	0.180	1.000	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722KF6RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.475	4.475	2.400	2.400	0.040	-0.0250	0.180	1.000	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722KF7RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.475	4.475	2.400	2.400	0.020	-0.0300	0.180	1.000	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722KF8RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.475	4.475	2.400	2.400	0.034	-0.0220	0.180	1.000	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722KF9RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.525	4.525	2.300	2.300	0.020	-0.0300	0.180	1.000	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722KFARRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.425	4.425	2.800	2.800	0.034	-0.0220	0.180	1.000	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722KFCRRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.475	4.475	2.800	2.800	0.040	-0.0250	0.180	1.000	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250
MM3722PF1RRE	SSON-6J	Prohibition	Latch	Latch	voltage	4.250	4.250	2.600	2.600	0.060	-0.0600	0.180	1.020	16.0	20.0	1.0	12.0	1.00	16.0	1.0	0.250