Fujitsu MB3887 Recommended Operating Conditions, Parameter Symbol Conditions Value Unit Min Typ

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MB3887

RECOMMENDED OPERATING CONDITIONS

Parameter

Symbol

Conditions

 

Value

 

Unit

 

 

 

Min

Typ

Max

 

 

 

 

 

 

 

 

 

 

 

Power supply voltage

VCC

VCC, VCC (O) terminal

8

25

V

 

 

 

 

 

 

 

Reference voltage output

IREF

1

0

mA

current

 

 

 

 

 

 

 

 

 

 

 

 

 

VH terminal output current

IVH

0

30

mA

 

 

 

 

 

 

 

 

VINE

INE1 to INE3, +INE1,

0

VCC 1.8

V

 

+INE2 terminal

Input voltage

 

 

 

 

 

 

 

 

 

 

 

VINC

+INC1, +INC2, INC1,

0

VCC

V

 

 

INC2 terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTD terminal

VOUTD

0

17

V

output voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTD terminal

IOUTD

0

2

mA

output current

 

 

 

 

 

 

 

 

 

 

 

 

 

CTL terminal input voltage

VCTL

0

25

V

 

 

 

 

 

 

 

Output current

IOUT

45

+45

mA

 

 

 

 

 

 

 

Peak output current

IOUT

Duty 5 %

600

+600

mA

(t = 1 / fosc Duty)

 

 

 

 

 

 

 

 

 

 

 

 

 

Oscillation frequency

fOSC

100

290

500

kHz

 

 

 

 

 

 

 

Timing resistor

RT

27

47

130

kΩ

 

 

 

 

 

 

 

Soft-start capacitor

CS

0.022

1.0

F

 

 

 

 

 

 

 

VH terminal capacitor

CVH

0.1

1.0

F

 

 

 

 

 

 

 

Reference voltage output

CREF

0.1

1.0

F

capacitor

 

 

 

 

 

 

 

 

 

 

 

 

 

Operating ambient

Ta

30

+25

+85

°C

temperature

 

 

 

 

 

 

 

 

 

 

 

 

 

WARNING: The recommended operating conditions are required in order to ensure the normal operation of the semiconductor device. All of the device’s electrical characteristics are warranted when the device is operated within these ranges.

Always use semiconductor devices within their recommended operating condition ranges. Operation outside these ranges may adversely affect reliability and could result in device failure.

No warranty is made with respect to uses, operating conditions, or combinations not represented on the data sheet. Users considering application outside the listed conditions are advised to contact their FUJITSU representatives beforehand.

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Contents Description FeaturesPackage 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 TypParameter Sym Pin Conditions Electrical CharacteristicsBol 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 Control block CTL PowerPWM comparator block PWM Comp Output block OUTSoft-start block Soft Setting the Charging VoltageMethod of Setting the Charging Current Method of Setting the Triangular Wave Oscillation FrequencyMethod 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 Ordering Information Usage PrecautionsPart number Package Remarks Index Package DimensionFujitsu Limited