Fujitsu MB3887 manual OUT = −45 mA Output block Resistor

Page 11

MB3887

(Continued)

(Ta = +25 °C, VCC = 19 V, VCC (O) = 19 V, VREF = 0 mA)

Parameter

Sym-

Pin

Conditions

 

Value

 

Unit

 

 

 

bol

No.

Min

Typ

Max

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Output source

ISOURCE

20

OUT = 13 V, Duty 5 %

400*

mA

 

current

(t = 1 / fOSC Duty)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Output sink

ISINK

20

OUT = 19 V, Duty 5 %

400*

mA

 

current

(t = 1 / fOSC Duty)

 

 

 

 

 

 

 

8.

 

 

 

 

 

 

 

 

Output ON

ROH

20

OUT = −45 mA

6.5

9.8

Ω

Output block

resistor

ROL

20

OUT = 45 mA

5.0

7.5

Ω

[OUT]

 

 

 

 

 

 

 

 

 

Rise time

tr1

20

OUT = 3300 pF

50*

ns

 

(Si4435 1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fall time

tf1

20

OUT = 3300 pF

50*

ns

 

(Si4435 1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CTL input voltage

VON

14

IC Active mode

2

25

V

9.

 

 

 

 

 

 

 

VOFF

14

IC Standby mode

0

0.8

V

 

Control block

 

 

 

 

 

 

 

 

 

ICTLH

14

CTL = 5 V

100

150

A

[CTL]

Input current

 

 

 

 

 

 

 

 

ICTLL

14

CTL = 0 V

0

1

A

 

 

 

 

 

 

 

 

 

 

 

10.

 

 

 

VCC = VCC (O)

 

 

 

 

Bias voltage

 

 

 

 

 

 

 

Output voltage

VH

19

= 8 V to 25 V,

VCC 6.5

VCC 6.0

VCC 5.5

V

block

 

 

 

VH = 0 to 30 mA

 

 

 

 

[VH]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Standby current

ICCS

18

VCC = VCC (O) ,

0

10

A

11.

CTL = 0 V

 

 

 

 

 

 

 

General

Power supply cur-

ICC

18

VCC = VCC (O) ,

8

12

mA

 

rent

CTL = 5 V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* : Standard design value

11

Image 11
Contents Package FeaturesDescription 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 TypBol Min Typ Electrical CharacteristicsParameter Sym Pin Conditions 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 Part number Package Remarks Usage PrecautionsOrdering Information Index Package DimensionFujitsu Limited