MM1451 查看數據表（PDF） - Mitsumi

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MM1451

Protection of Lithium-Ion Batteries (for Double-Protect)

Mitsumi 

MITSUMI

Application Circuit

Protection of Lithium-Ion Batteries (for Double-Protect) MM1451

Delay time Td(S) = 7 CCt (µF)

Note 1: Can support 1, 2 or 3 cells by shorting each cell. However, be sure to connect a battery for V3 cell.

V3 cell may not operate correctly when shorted.

Note 2: When connecting batteries, be sure to connect in the following order: GND V3, and VCC V1OR

V2.

Note 3: Output may go ON momentarily when starting up power supply. If this error output during startup

becomes a problem, connect the VCC pin last.

Note 4: Operation can not be guaranteed for connections other than the above.

Note 5: The input resistance for each cell should be 1kΩ or lower. Also, please select the appropriate value

for the external capacitor according to the usage environment.

Timing Chart

4.45V

4.40V

V1~V3

Ct

1.8V

0.75V

OUT

1.5S

OUT

(at Ct short)

(at Ct open)

Note: Output goes high simultaneously with overcharge detection at Ct pin short and open.

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