MM1433_ Просмотр технического описания (PDF) - Mitsumi

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MM1433_

IC for Control of Lithium-ion Batteries Charging

Mitsumi 

MITSUMI

IC for Control of Lithium-ion Batteries Charging MM1433

Measurement Procedures

(Except where noted otherwise, Ta = 25°C, VCC=5V, V1=V2=0V, V13=4.2V,

SW12, 17, 20, 22, 24:A, I15=0mA Timers are not in time up state.)

Item

Consumption current

Reference voltage

ADP detection voltage L

ADP detection voltage L

Hysteresis voltage width

ADP detection voltage H

ADP detection voltage H

Hysteresis voltage width

Impedance for

ADP Ldetection output

BAT pin leak current

BAT pin output voltage

CNT pin output voltage

CHGSW pin input current

CHGSW pin input voltage H

CHGSW pin input voltage L

RESET pin input current

RESET pin input voltage H

RESET pin input voltage L

Current limit 1

Current limit 2

Full charge detection

Low voltage detection voltage

Low voltage detection voltage

Hysteresis voltage width

Pre-charge detection voltage

Pre-charge detection voltage

Hysteresis voltage width

Re-charge detection voltage

Overvoltage detection voltage

Battery temperature

detection voltage H

Battery temperature

detection voltage L1

Battery temperature

detection voltage L2

TDET input bias current

LED R pin output voltage

LED G pin output voltage

Measurement Procedures

V1 = 1.2V. Measure A18 current value ICC.

Measure T5 potential VREF.

Gradually lower Vcc from 5V; VCC - potential is VADPL when T20 potential drops

below 0.5V.

Gradually lower VCC - from 2V. VCC - potential is VADPL2 when T20 potential

goes over VCC - 0.5V. VADPLW = VADLP2 - VADPL

Gradually increase Vcc from 5V. Vcc potential is VADPH when T20 potential

drops below 0.5V.

Gradually lower VCC from 7V. VCC potential is VADPH2 when T20 potential

goes over VCC - 0.5V. VADPHW = VADPH - VADPH2

VCC = 7V, SW20: B, V20 - 0.5V, impedance between T20-GND is ZADPL.

VCC = 0V, SW17: B, V17 = 0V. Measure A13 current value IBAT.

Gradually lower V13 from 3.5V. T13 potential is VBAT when T15 - T13 potential

difference falls to less than 20mV.

V13 = 3.5V, SW17: B. Gradually raise V17 from 0V. T17 potential is VCNT when

A17 current value 20mA.

Measure A1 current value ISW.

V13 = 3.5V. Raise V1 from 0V to 1.2V. CHGSW: ON when A13 is more than

500mA. CHGSW: OFF when A13 is less than 1mA. Measure VSW.

Measure A2 current value IRE.

V13 = 3.5V. Raise V2 from 0V to 1.2V. Charging control circuit: ON when A13 is more

than 500mA. Charging control circuit: OFF when A13 is less than 1mA. Measure VRE.

V13 = 3.5V. T15-T13 potential difference is VL1.

V13 = 3.5V. T15-T13 potential difference is VL2.

SW24: B, I15 = 100mA. Gradually reduce I15 current value after reset. T15 -

T13 potential difference is VF when T21 potential goes under 0.5V.

Gradually raise V13 from 0V. T13 potential is VLV when A13 current value goes

over 50mA.

Gradually lower V13 from 2.5V. T13 potential is VLV2 when A13 current value

goes over 10mA. VLVW = VLV - VLV2

Gradually raise V13 from 2.5V. T13 potential is VP when A13 current value

goes over 500mA.

Gradually lower V13 from 3.5V. T13 potential is VP2 when A13 current value

goes under 150mA. VPW = VP= VP2

Wait about 1S at V13 = 4.2V; in full charge detection state, gradually lower V13

potential to lower T21 potential to under 0.5V. T13 potential is VR when T21

potential is more than VCC - 0.5V.

Gradually raise V13 from 4V. T13 potential is VOV when T22 potential starts to

repeat HI/LOW.

V13 = 3.5V, SW12: B. Gradually raise V12 from 0.6V. T12 potential is VTH

when A13 current value goes under 1mA.

V13 = 3.5V, SW12: B. Gradually raise V12 from 0V. T12 potential is VTL1 when

A13 current value goes over 500mA.

V13 = 3.5V, SW12: B. Gradually raise V12 from 0.6V. T12 potential is VTL2

when A13 current value goes over 1mA.

SW12: B, V12 = 0V. Measure A12 current value IT.

V13 = 3.5V, SW22: B. Gradually raise V22 from 0V. T22 potential is VLEDR

when A22 current value is 10mA.

Wait about 1S at V13 = 4.2V; in full charge detection state, make T21 potential

0.5V or less. Next at SW21: B, gradually raise V21 from 0V. T21 potential is

VLEDG when A21 current value is 10mA.

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