MB3887 datasheet(9/33 Pages) FUJITSU

Part #	MB3887

Description	DC/DC Converter IC for Charging Li-ion battery

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Manufacturer	FUJITSU [Fujitsu Component Limited.]

Direct Link	http://edevice.fujitsu.com/fmd/en/index.html

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9 / 33 page

MB3887

9

(Ta

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

* : Standard design value

(Continued)

Parameter

Sym-

bol

No.

Conditions

Value

Unit

Min

Typ

Max

5-2.

Error amplifier

block

[Error Amp3]

Threshold voltage

VTH1

16

FB3

= 2 V, Ta = +25 °C

4.183

4.200

4.225

V

VTH2

16

FB3

= 2 V,

Ta

= −10 °C to +85 °C

4.169

4.200

4.231

V

Input current

IINE3

16

−INE3 = 0 V

−100

−30

⎯

nA

Voltage gain

AV

15

DC

⎯

100*

⎯

dB

Frequency

bandwidth

BW

15

AV

= 0 dB

⎯

2*

⎯

MHz

Output voltage

VFBH

15

⎯

4.7

4.9

⎯

V

VFBL

15

⎯⎯

20

200

mV

Output source

current

ISOURCE

15

FB3

= 2 V

⎯−2

−1mA

Output sink current

ISINK

15

FB3

= 2 V

150

300

⎯µA

OUTD terminal

output leak current

ILEAK

11

OUTD

= 17 V

⎯

01

µA

OUTD terminal

output ON resistor

RON

11

OUTD

= 1 mA

⎯

35

50

Ω

6.

Current detec-

tion amplifier

block

[Current

Amp1, Current

Amp2]

Input offset voltage

VIO

1,

12,

13,

24

+INC1 = +INC2 =

−INC1 = −INC2 =

3 V to VCC

−3

⎯+3mV

Input current

I+INCH

13,

24

+INC1 = +INC2 =

3 V to VCC,

∆VIN = −100 mV

⎯

20

30

µA

I−INCH

1, 12

+INC1 = +INC2 =

3 V to VCC,

∆Vin = −100 mV

⎯

0.1

0.2

µA

I+INCL

13,

24

+INC1 = +INC2 = 0 V,

∆Vin = −100 mV

−180

−120

⎯µA

I−INCL

1, 12 +

INC1

= +INC2 = 0 V,

∆Vin = −100 mV

−195

−130

⎯µA

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