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 Lithium-Ion Battery ICs
ICS
3 to 5 cells Lithium-ion/Lithium-polymer battery protection IC
MM3684 Series
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[Outline]
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.

[Features]   (Unless otherwise specified, Topr=+25°C)
1) Range and accuracy of detection/release voltage
●Overcharge detection voltage 1 (0V output)3.6V to 4.5V, 5mV stepsAccuracy ±25mV
(Topr=±0 to +50°C)
●Overcharge release voltage 1 (0V output) *13.4V to 4.5V, 50mV stepsAccuracy ±50mV
●Overcharge detection voltage 2 (PF output)3.6V to 4.5V, 5mV stepsAccuracy ±25mV
(Topr=±0 to +50°C)
●Overdischarge detection voltage 12.0V to 3.0V, 50mV stepsAccuracy ±80mV
●Overdischarge detection voltage 22.0V to 3.0V, 50mV stepsAccuracy ±100mV
●Overdischarge release voltage *22.0V to 3.5V, 50mV stepsAccuracy ±100mV
●Discharging overcurrent detection voltage 130mV to 300mV, 5mV stepsAccuracy ±15%
●Discharging overcurrent detection voltage 2Twice or 4 times of discharging overcurrent 1 *3Accuracy ±20%
●Short detection voltage4 or 8 times of discharging overcurrent 1 *3Accuracy ±100mV
●Charging overcurrent detect voltage-300mV to -20mV, 5mV stepsAccuracy ±10mV
2) Range of detection delay time
●Overcharge detection delay time 1Setting by a capacitor of COV pin.Accuracy ±50%
●Overcharge release delay time 1Setting by a capacitor of COV pin.Accuracy ±50%
●Overcharge detection delay time 2Setting by a capacitor of CPF pin.Accuracy ±50%
●Overdischarge detection delay timeSetting by a capacitor of CUV pin.Accuracy ±50%
●Overdischarge release delay timeSetting by a capacitor of CUV pin.Accuracy ±50%
●Discharging overcurrent detection delay time 1Setting by a capacitor of DCOC pin.Accuracy ±50%
●Discharging overcurrent detection delay time 2Setting by a capacitor of DCOC pin.Accuracy ±50%
●Short detection delay timeSelection from 100µs, 200µs, 300µsAccuracy -50%, +100%
●Discharging overcurrent release delay timeSetting by a capacitor of DCOC pin.Accuracy ±50%
●Charging overcurrent detection delay timeSetting by a capacitor of CCOC pin.Accuracy ±50%
●Charging overcurrent release delay timeSetting by a capacitor of CCOC pin.Accuracy ±50%
●Temperature protection detection ON timeSetting by a capacitor of CIOT pin.Accuracy ±50%
●Temperature protection detection OFF timeSetting by a capacitor of CIOT pin.Accuracy ±50%
*1 : Overcharge release function is selectable from 3 options.(voltage decrease, charger remove, load connect)
*2 : Overdischarge release function is selectable from 3 options.(voltage increase , charger remove, load connect)
*3 : option


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
●When all cells is detected overdischarge and charger disconnecting, IC becomes low consumption mode.
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
9) Input cerrent
●V4 pin input current (Vcell=3.5V)Max. 0.3µA
●V3 pin input current (Vcell=3.5V)Max. 0.3µA
●V2 pin input current (Vcell=3.5V)Max. 0.3µA
●V1 pin input current (Vcell=3.5V)Max. 0.3µA
10) Absolute maximum ratings
●VDD pinVSS-0.3V to VSS+30V
●V5 pinV4-0.3V to VDD+0.3V
●Voltage between the input terminals-0.3V to +10V
●V-, 0V pinVDD-30V to VDD+0.3V
●PF, DCHG, CS pinVSS-0.3V to VDD+0.3V
●SEL1, SEL2, DVSEL pinVSS-0.3V to VDD+0.3V
●CPF, COV, CUV pinVSS-0.3V to VDD+0.3V
●CDOC, CCOC, CIOT pinVSS-0.3V to VDD+0.3V
●REG, TH pinVSS-0.3V to VDD+0.3V
●Storage temperature-55 to +125°C
11) Recommended operating conditions
●Operating Temperature-40 to +85°C
●Supply VoltageVSS+3.5V to +22.5V


[Pin Assignment]
Top view
Pin No.
Symbol
Pin No.
Symbol
Pin No.
Symbol
VSOP-24A
1
V-
11
SEL1
21
V4
2
OV
12
SEL2
22
V5
3
DCHG
13
CS
23
VDD
4
CUV
14
TH
24
PF
5
CPF
15
REG
6
COV
16
VSS_CS
7
CDOC
17
VSS
8
CCOC
18
V1
9
CIOT
19
V2
10
DVSEL
20
V3
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[NOTE]
-Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
-The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
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