MM1475 View Datasheet(PDF) - Mitsumi
Part Name
Description
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MM1475 Datasheet PDF : 11 Pages
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MITSUMI
Lithium Ion Battery Charging Control (microcomputer-controlled type) (one cell) MM1475
Measurement method
(Except where otherwise indicated, Ta = 25°C, Vcc = 5V, VCC : current limit 0.5A,
V1 = V2 = 0V, V13 = 4.2V, S10, 11, 12, 17, 19, 20, 24:A, timer time is not up)
Item
Consumption current 1
Consumption current 2
Reference voltage
ADP detection voltage L
ADP detection voltage L
Hysteresis voltage width
ADP detection voltage H
ADP detection voltage H
Hysteresis voltage width
BAT pin leak current
BAT pin output voltage
CNT pin output voltage
SW1 pin input current
SW1 pin input voltage H
SW1 pin input voltage L
SW2 pin input current
SW2 pin input voltage H
SW2 pin input voltage L
Current limit 1
Current limit 2
Current detection amp gain
Current detection amp
input offset voltage
Current detection amp
output current
VOUT1 pin output voltage
VOUT2 pin output voltage
Battery temperature
detection voltage
Battery temperature
detection voltage
hysteresis voltage width
TOUT pin output voltage
TDET input bias current
Measurement method
Measure A18 current value ICC1 when V1 = V2 = 1.2V.
Measure A18 current value ICC2.
Measure T5 potential VREF.
Gradually lower VCC from 5V. VCC potential when T19 potential goes over VCC -
0.5V is VADPL.
Gradually lower VCC from 2V. VCC potential when T19 potential drops below
0.5V is VADPL2. VADPLW=VADPL2-VADPL
Gradually raise VCC from 5V. VCC potential when T20 potential goes over VCC -
0.5V is VADPH.
Gradually lower VCC from 7V. VCC potential when T20 potential drops below
0.5V is VADPH2. VADPHW=VADPH-VADPH2
Measure A13 current value IBAT when VCC = 0V, S17: B, V17 = 0V.
Gradually raise V13 from 3.5V. T13 potential when T15-T14 potential
difference is 20mV or less is VBAT.
Gradually raise V17 from 0V when V13 = 3.5V and S17: B. T17 potential when
A17 current value reaches 20mA is VCNT.
Measure A1 current value ISW1.
Change V1 from 0V to 1.2V when V13 = 3.5V and V2 = 1.2V. To identify VSW1 H
and L, when A13 is over 50mA, charging is ON at current limit 2, and when A13
is 1mA or under, charging is OFF.
Measure A2 current value ISW2.
Change V2 from 0V to 1.2V when V13 = 3.5V. To identify VSW2 H and L, when
A13 is over 450mA, charging is ON at current limit 1, and when A13 is 1mA or
under, charging is OFF.
Gradually raise VCC current limit value when V13 = 3.5V, and measure T15 -T14
potential difference VL1.
V13 = 2.5V, V1 = V2 = 1.2V, and T15-T14 potential difference is VL2.
T15-T14 potential difference fluctuation is Va and T10 potential fluctuation is
Vb when V13 = 3.5V and VCC current limit value is changed from 100mA to
200mA.
GI=20log Vb/ Va
T10 potential is Vb2 when V13 = 4.0V and VCC current limit value is 100mA.
VOFF=Vb2/8 -30mV
Measure A10 current value when V13 = 3.5V, VCC current limit value is 300mA,
S10: B and V10 = 0V.
Gradually raise V20 from 0V when S20: B. T20 potential when A20 current
value is 0.12mA is VOUT1.
Gradually raise V19 from 0V when S19: B. V19 potential when A19 current
value is 0.12mA is VOUT2.
At S12:B, lower gradually from V12 = 0V. T12 potential is VTDET when T11
potential falls below 0.3V.
At S12:B, lower gradually fromV12 = 0V. T12 potential is VTDET2 when T11
potential goes above 0.8V. VTDETW = VTDET2 - VTDET
Raise V11 gradually from 0V when S12:B, V12 = 0V, S11:B. T11 potential is
VTOUT when A11 current value is 0.12mA.
Measure A12 current value IT for S12:B, V12 = 0V.
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