MM3723 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

The MM3723 series integrates into 1.09mm × 0.81mm × 0.46mm WLCSP Package. It's using high voltage CMOS process for overcharge, overdischarge and overcurrent protection of the rechargeable Lithium-ion and Lithium-polymer battery. The overcharge, overdischarge, discharging overcurrent, charging overcurrent and short protection of the rechargeable one-cell Lithium-ion and Lithium-polymer battery can be detected.

For one-cell
1. Range and accuracy of detection/release voltage
●Overcharge detection voltage 3.6V to 4.6V, 5mV step Accuracy±12mV
●Overdischarge detection voltage 2.0V to 3.0V, 50mV step Accuracy±35mV
●Discharging overcurrent detection voltage 20mV to 100mV, 1mV step Accuracy±ΔV ※1
●Charging overcurrent detection voltage -100mV to -20mV, 1mV step Accuracy±ΔV ※1
●Short detection voltage 100mV to 300mV,10mV step Accuracy±8%

2. Range of detection delay time
●Overcharge detection delay time 1.0s, 1.2s, 4.0s
●Overdischarge detection delay time 20ms, 24ms, 32ms, 96ms, 128ms
●Discharging overcurrent detection delay time 8ms, 12ms, 16ms, 20ms, 256ms, 512ms
●Charging overcurrent detection delay time 4ms, 6ms, 8ms, 10ms, 12ms, 16ms, 96ms
●Short detection delay time 250µs to 400µs

3. 0V battery Charge functionSelection from "Permission" or "Prohibition"

4. Low current consumption
●Normal mode Typ. 2.5µA, Max. 4.0µA
●Stand-by mode Max. 0.1µA (Overdischarge latch function Enable)
Max. 0.6µA (Overdischarge latch function Disable)

*1 Accuracy of overcurrent detection voltage

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]
MM3723CL1LRE	WLCSP-6B	Permission	voltage	Latch	voltage	4.425	4.225	2.300	2.300	0.040	-0.0250	0.150	1.020	16.0	96.0	1.0	12.0	1.00	10.0	1.0	0.300
MM3723CL3LRE	WLCSP-6B	Permission	voltage	Latch	voltage	4.425	4.225	2.300	2.300	0.060	-0.0200	0.150	1.020	16.0	96.0	1.0	12.0	1.00	10.0	1.0	0.300
MM3723CL4LRE	WLCSP-6B	Permission	Latch	Latch	voltage	4.475	4.275	2.200	2.200	0.070	-0.0300	0.200	1.020	32.0	96.0	1.0	24.0	1.00	20.0	1.0	0.650