Processing Without Using the Current AMP | Fujitsu MB3887 instruction

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

Contents

Features DescriptionPackage MB3887 TOP View PIN Assignment PIN Description Pin No Symbol Descriptions Block Diagram Absolute Maximum Ratings Parameter Symbol Conditions Rating Unit Min Max Recommended Operating Conditions Parameter Symbol Conditions Value Unit Min Typ Electrical 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 CTL Method of Setting the Charging Current Setting the Charging VoltageMethod of Setting the Triangular Wave Oscillation Frequency Soft-start block Soft Method of Setting the SOFT-START Time AC Adaptor Voltage Detection Operation Timing Diagram Connection when Current Amp is not used Processing Without Using the Current AMP Connection when Error Amp is not used Processing Without Using of the Error AMP Connection when soft-start time is not specified Processing Without Using of the CS Terminal At 4 cell Application Example Parts No Parts List Reference Data Batt Vbatt mV Ta = +25 C, VIN = 19 Batt = 12 Ω Usage Precautions Ordering InformationPart number Package Remarks Index Package Dimension Fujitsu Limited