Fujitsu MB3887 Processing Without Using the Current AMP, Connection when Current Amp is not used

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MB3887

PROCESSING WITHOUT USING THE CURRENT AMP

When Current Amp is not used, connect the +INC1 terminal (pin 13) , +INC2 terminal (pin 24) , INC1 terminal (pin 12) , and INC2 terminal (pin 1) to VREF, and then leave OUTC1 terminal (pin 10) and OUTC2 terminal (pin 2) open.

“Open”

12

INC1

+INC1

13

1

INC2

+INC2

24

10OUTC1

2 OUTC2

6 VREF

Connection when Current Amp is not used

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Contents Features DescriptionPackage MB3887 TOP View PIN AssignmentPIN Description Pin No Symbol DescriptionsBlock Diagram Absolute Maximum Ratings Parameter Symbol Conditions Rating Unit Min MaxRecommended Operating Conditions Parameter Symbol Conditions Value Unit Min TypElectrical Characteristics Parameter Sym Pin ConditionsBol Min Typ Parameter Sym Pin Conditions Value Unit Bol Min Typ Max Parameter Sym Pin Conditions Value Unit Bol Min Typ OUT = −45 mA Output block Resistor Typical Characteristics Triangular wave oscillation frequency fOSC kHz Error amplifier gain and phase vs. Frequency Gain a Power dissipation vs. Ambient temperature Functional Description PWM comparator block PWM Comp PowerOutput block OUT Control block CTLMethod of Setting the Charging Current Setting the Charging VoltageMethod of Setting the Triangular Wave Oscillation Frequency Soft-start block SoftMethod of Setting the SOFT-START Time AC Adaptor Voltage Detection Operation Timing DiagramConnection when Current Amp is not used Processing Without Using the Current AMPConnection when Error Amp is not used Processing Without Using of the Error AMPConnection when soft-start time is not specified Processing Without Using of the CS TerminalAt 4 cell Application ExampleParts No Parts ListReference Data Batt Vbatt mV Ta = +25 C, VIN = 19 Batt = 12 Ω Usage Precautions Ordering InformationPart number Package Remarks Index Package DimensionFujitsu Limited