Fujitsu MB3878 manual PIN Assignment, TOP View

Page 2

MB3878

(Continued)

•Built-in current detector amplifier with wide in-phase input voltage range : 0 V to Vcc

•In standby mode, leave output voltage setting resistor open to prevent inefficient current loss

•Built-in standby current function : 0 ∝A (standard)

•Built-in soft-start function

•Built-in totem-pole output stage supporting P-channel MOS FETs devices

■PIN ASSIGNMENT

(TOP VIEW)

−INC2

:

1

24

: +INC2

OUTC2

:

2

23

: GND

+INE2

:

3

22

: CS

−INE2

:

4

21

: VCC (O)

FB2

:

5

20

: OUT

VREF

:

6

19

: VH

FB1

:

7

18

: VCC

−INE1

:

8

17

: RT

+INE1

:

9

16

: −INE3

OUTC1

: 10

15

: FB3

OUTD

: 11

14

: CTL

−INC1

: 12

13

: +INC1

(FPT-24P-M03)

2

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Contents Package FeaturesDescription PIN Assignment TOP ViewPin No Symbol Descriptions PIN DescriptionBlock Diagram Recommended Operating Conditions Parameter Symbol Conditions Rating Unit Min MaxAbsolute Maximum Ragings ParameterElectrical Characteristics Parameter Symbol Pin Conditions Value Unit Min TypParameter Symbol Pin Conditions Value Unit Min Typ Max Outd = 1 mA 100 On resistor200 Amplifier block Output source Typical Characteristics Triangular wave oscillator Deg Functional Description Control block CTL PWM comparator block PWM CompOutput block OUT Bias voltage block VHMethod of Setting the SOFT-START Time Setting the Charging VoltageMethod of Setting the Charging Current Method of Setting the Triangular Wave Oscillator FrequencyOperation Timing Diagram AC Adaptor Voltage DetectionProcessing Without USE of the CS PIN Vcco OUT VIN BattApplication Example OUTC2Parts No Reference Data BattVCC Vishay Siliconix Part number Package Remarks Usage PrecautionsOrdering Information MB3878PFVPackage Dimension IndexFujitsu Limited
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