Fujitsu MB3878 manual Typical Characteristics

Page 9

MB3878

TYPICAL CHARACTERISTICS

Power supply current vs. power supply voltage

Reference voltage vs. power supply voltage

 

 

12

 

 

 

 

 

10

 

 

 

 

 

 

Ta = +25 °C

(V)

 

Power supply current

 

10

 

 

 

CTL = 5 V

8

 

 

 

 

 

 

Reference voltage VREF

 

8

 

 

 

 

 

ICC (mA)

 

 

 

 

 

6

6

 

 

 

 

 

4

 

 

 

 

4

 

 

 

 

 

2

 

 

 

 

2

 

 

 

 

 

0

 

 

 

 

0

 

 

 

 

 

 

 

 

 

0

5

10

15

20

25

 

 

 

 

 

Ta = +25 °C

 

 

 

 

CTL =

5 V

 

 

 

 

VREF

= 0 mA

0

5

10

15

20

25

Power supply voltage VCC (V)

Power supply voltage VCC (V)

Reference voltage vs. VREF load current

Reference voltage vs. ambient temperature

Reference voltage VREF (V)

10

8

6

4

2

0

Ta = +25 °C

VCC = 19 V

CTL = 5 V

0

5

10

15

20

25

30

)

2.0

 

 

 

 

VCC = 19 V

 

 

 

 

 

 

 

(%

 

 

 

 

 

 

1.5

 

 

 

 

CTL = 5 V

 

VREF

1.0

 

 

 

 

VREF = 0 mA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Δ

0.5

 

 

 

 

 

 

 

voltage

 

 

 

 

 

 

 

0.0

 

 

 

 

 

 

 

0.5

 

 

 

 

 

 

 

Reference

 

 

 

 

 

 

 

1.0

 

 

 

 

 

 

 

1.5

 

 

 

 

 

 

 

2.0

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

40

0

20

40

60

80

100

Reference voltage VREF (V)

VREF load current IREF (mA)

Reference voltage vs. CTL pin voltage

10

 

 

 

 

 

 

 

 

 

 

Ta =

+25 °C

 

 

 

VCC = 19 V

 

8

 

VREF = 0 mA

 

 

 

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

2

0

0

0.5

1

1.5

2

2.5

CTL pin voltage VCTL (V)

CTL pin current ICTL (mA)

Ambient temperature Ta ( °C)

CTL pin current vs. CTL pin voltage

1.0

Ta = +25 °C

VCC = 19 V

0.8

0.6

0.4

0.2

0.0

0

5

10

15

20

25

CTL pin voltage VCTL (V)

(Continued)

9

Image 9
Contents Features DescriptionPackage TOP View PIN AssignmentPIN Description Pin No Symbol DescriptionsBlock Diagram Absolute Maximum Ragings Parameter Symbol Conditions Rating Unit Min MaxRecommended Operating Conditions ParameterParameter Symbol Pin Conditions Value Unit Min Typ Electrical CharacteristicsOutd = 1 mA 100 On resistor Parameter Symbol Pin Conditions Value Unit Min Typ Max200 Amplifier block Output source Typical Characteristics Triangular wave oscillator Deg Functional Description Output block OUT PWM comparator block PWM CompControl block CTL Bias voltage block VHMethod of Setting the Charging Current Setting the Charging VoltageMethod of Setting the SOFT-START Time Method of Setting the Triangular Wave Oscillator FrequencyAC Adaptor Voltage Detection Operation Timing DiagramVcco OUT VIN Batt Processing Without USE of the CS PINOUTC2 Application ExampleParts No Batt Reference DataVCC Vishay Siliconix Ordering Information Usage PrecautionsPart number Package Remarks MB3878PFVIndex Package DimensionFujitsu Limited