Lithium-Ion Battery ICs
3 to 4 cell Lithium-ion/Lithium-polymer battery secondaryr potection protection IC
MM3625 Series
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The MM3625 series are secondary protection IC using high voltage CMOS process for overcharge protection of the rechargeable Lithium-ion or Lithium-polymer battery.
The high accuracy overcharge detection of each cell of the rechargeable 3 to 4 cell Lithium-ion or Lithiumpolymer battery is possible.
The IC has a regulator and it is possible to stop regulator by detected overdischarge.
The internal circuit of IC is composed by the voltage detector, the reference voltage source, delay time control circuit, the logical circuit, and regulator circuit etc.

[Features] (Unless otherwise specified, Topr=+25°C)

1. Range and accuracy of detection/release voltage

●Overcharge detection voltage 3.6V to 4.5V, 5mV steps Accuracy±25mV (Topr=±0 to +50℃)
●Overcharge release voltage 3.4V to 4.5V, 50mV steps Accuracy±50mV
●VOUT OFF voltage 2.1V to 3.2V, 10mV steps Accuracy±50mV
●VOUT ON voltage (Note1) 2.3V to 3.4V, 50mV steps Accuracy±75mV
Note1 : This parameter can set when starting conditions of VOUT are voltage release

2. Range and accuracy of detection/release delay time (Note2)

●Overcharge detection delay time 1ms to (1ms2n1)+(1ms2n2)+(1ms2n3) Accuracy±25%
●Overcharge release delay time 1ms to (1ms2n1) Accuracy±25%
●VOUT OFF delay time 1ms to (1ms2n1)+(1ms2n2)+(1ms2n3) Accuracy±25%
Note2 : n1,n2 and n3 can select arbitrary integers between 0 to 17. (However n1≠n2≠n3)

3. Range and accuracy of regulator output voltage

●VOUT pin output voltage 1.8V to 5.0V, 50mV steps Accuracy±100mV

4. The setting for three cell and for four cell protection can be set with the SEL pin

5. Regulator output can be control with the EN pin

It does not stop regulator during H level is applied to EN pin. When EN pin is L level and
cell voltage lower than VOUT OFF voltage, it stop regulator

6. FUSE pin can control with the CTL pin

If H level is applied to CTL pin without cell voltage, FUSE pin outputs H level.
In case of L level is applied to CTL pin, FUSE pin outputs H level by overcharge detection

7. Low current consumption

●Current consumption1(VDD pin) Vcell=3.5V Typ. 4.5µA, Max. 6.5µA
●Current consumption1(VDD pin) Vcell=2.5V Max. 0.1µA
(When starting conditions of VOUT are EN pin.)
  Max. 1.0µA
(When starting conditions of VOUT are cell voltage.)

8. Absolute maximum ratings

●VDD pin VSS-0.3V to VSS+20V
●Voltage between the input pins of voltage of battery -0.3V to +10V
●FUSE pin, EN pin, SEL pin,CTL pin supply voltage VSS-0.3V to VDD+0.3V
●VOUT pin output current 150µA
●Storage temperature -55℃ to +125℃
●Operation temperature -55℃ to +125℃

9. Recommened operating conditions

●Operation temperature -40℃ to +85℃
●Supply Voltage VSS 4.5V to VSS 18.0V
●VOUT pin output current 0 to 100µA


[Pin Assignment]


-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.