MM1438 查看數據表（PDF） - Mitsumi

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MM1438

IC for Control of Lithium-ion Betteries Charging (one cell)

Mitsumi 

MITSUMI

IC for Control of Lithium-ion Betteries Charging (one cell) MM1438

Measurement Procedures (Except where noted otherwise, Ta=25°C, VCC=5V, SW3 : A, SW6 : A, SW7 : A)

Item

Consumption current 1

Consumption current 2

Output voltage

Current limit

Inflow current between

CEL-CS during operation

Leak current between CEL-CS

SW1 input current

SW1 input voltage

Low voltage detection voltage

SW2 input current

SW2 input voltage

Low voltage detection

output leak current

Low voltage detection

output saturation voltage

EXT pin inflow current

EXT pin output voltage

Measurement Procedures

V3 = VCC, V4 = 0V. Next, measure A5 current value Icc1 when V3 is changed

from VCC 0V.

V3 = Vd = VCC. Measure A6 current value ICC2 at this time.

V3 = VCC, V4 = 0V. Measure T7 voltage VO at this time.

V3 = Vcc, V4 = 0V. Set V7 voltage 1V lower than T7 (output voltage) potential

and set SW7 to B. Measure T8 voltage VCL at this time.

V3 = VCC, V4 = 0V, SW6: C. V7 = 4.5V, SW7: B. Measure A7 current value

ICEL1 at this time.

V3 = V4 = VCC = 0V, SW6: C. V7 = 4.5V, SW7: B. Measure A7 current value

ICEL2 at this time.

Measure A4 current value ISW1 when V4 = 0V.

V3 = VCC. Charge: ON (VL1) when V4 potential is varied and T7 voltage is the

prescribed output voltage; Charge OFF (VH1) when 0 ~ 0.05V.

V3 = V4 = 0V. Set V7 voltage 1V lower than T7 (output voltage) potential, and

SW7: B.

Next gradually lower V7 voltage; V7 voltage is LV when A7 current value is

within ±10µA.

Measure A3 current value ISW2 when V3 = 0V.

V4 = 0V, V7 = 1V, SW7: B. Low voltage detection circuit: ON (VL2) when V3

voltage is varied and A7 current value is within ±10µA; low voltage detection

circuit: OFF (VH2) otherwise.

V3 = VCC, V4 = 0V. Measure A2 current value ILV when V3 is changed from

Vcc 0V.

V3 = V4 = 0V. SW3: B, SW7: B. Measure T2 voltage VLV when V7 voltage is 0V.

V3 = V4 = 0V. SW6: B, SW7: B, V6 = 4V, V7 = 3V. Measure A6 current value IEXT.

V3 = V4 = 0V. SW6: C, SW7: B. T6 voltage when V7 = 3V and V7 = 5V is VEXT.

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