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MITSUMI

Lithium-Ion Battery Charge Control IC MM3358

Item

Symbol Measurement

circuit

Measuring circuit

Forced charge time

(*1)

Tistart

C

When increasing VF1 from 2.3V to 5.0V under the condition of

VF10=3.6V, measure the time from forced charge start(|I10|>1mA) to

forced charge stop(|I10|<1mA).

Forced charge OFF

time (*1)

Toff

C

After increasing VF1 from 2.3V to 5.0V under the condition of

VF10=3.6V, the half time from forced charge stop(|I10|<1mA) to

fast charge start(|I10|>1mA) should be Toff.

Battery voltage

detection time (*1)

Tcon

C

When decreasing VF10 from 4.25V to 3.8V after charge complete

mode under the condition of VF10=4.25V, the half time from when

the current of I9 exceeds 100µA to when V3=Low to High and the

charging restarts(|I10|>1mA) should be Tcon.

Fast charge start

voltage detection time

(*1)

Tqstart

C

When increasing VF10 from 2.6V to 3.6V under the condition of trickle

charge mode, VF10=2.6V, and R8=2.32kΩ, measure the time from when

VF10>3.0V(Vqchgon) to when fast charge starts(|I10|>530mA).

Charge completion current

detection time (*1)

Tifc

F

When decreasing IF10 from-80mA to -30mA under the condition

of fast charge mode and R8=2.32kΩ, measure the time from when

IF10>-56mA(Ifc) to when the charging stops (I10>-1mA).

Recharge start voltage

detection time (*1)

Trechg

C

When decreasing VF10 from 4.25V to 3.8V after charge completion

mode under the condition of VF10=4.25V, measure the time from

when VF10<3.97V(Vrechg) to when the current of I9 exceeds 100µA.

Trickle-charge timer (*1)

Tdchg

C

When decreasing VF7 from 5.0V to 0V under the condition of trickle

charge mode, VF7=5.0V, VF10=2.6V, and time reduction mode(See Pin

description), measure the time from when VF10<0.5V (Vtmr) to when V3

starts blinking(V3=High to Low, charge error mode) and the charging

stops(|I10|<1mA). Tdchg=Tdchg2×2.304E + 08/109 in time reduction

mode due to a TH pin.

Fast-charge timer (*1)

Tchg

C

When decreasing VF7 from 5.0V to 0V under the condition of fast

charge mode, VF7=5.0V, VF10=3.6V, and time reduction mode(See

Pin description), measure Tchg2 that is the time from when

VF10<0.5V(Vtmr) to when V3 starts blinking(V3=High to Low, charge

error mode) and the charging stops (|I10|<1mA).

Tchg=Tchg2×1.152E + 09/137 in time reduction mode due to a TH pin.

Battery overvoltage

detection time (*1)

Tov

C

When increasing VF10 from 3.6V to 4.5V under the condition of fast charge

mode and VF10=3.6V, measure the time from when VF10>4.35V(Vov) to

when V3 starts blinking (V3=High to Low, charge error mode).

Charge stop temperature

detection time (*1)

Tpro

C

When increasing(decreasing) VF6 from 1.0V to 2.0V(0V) under the

condition of fast charge mode, VF6=1.0V, and VF10=3.6V, measure

the time from when VF6>VthSL(VF6<VthSH) to when V3=High to

Low and the charging stops(|I10|<1mA).

Charge recovery

temperature detection

time (*1)

Tpro

C

When decreasing (increasing) VF6 from 2.0V(0V) to 1.0V under

the condition of charge stop detection mode, VF6=2.0V(0V), and

VF10=3.6V, measure the time from when VF6<VthRL(VF6>VthRH)

to when V3=Low to High and the charging restarts (|I10|>1mA).

note : 1 The parameter is guaranteed by design.