MB3887_06 datasheet(10/34 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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10 / 34 page

MB3887

10

(Continued)

(Ta

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

* : Standard design value

Parameter

Sym-

bol

No.

Conditions

Value

Unit

Min

Typ

Max

8.

Output block

[OUT]

Output source

current

ISOURCE

20

OUT

= 13 V, Duty ≤ 5 %

(t

= 1 / fOSC × Duty)

⎯−400*

⎯

mA

Output sink

current

ISINK

20

OUT

= 19 V, Duty ≤ 5 %

(t

= 1 / fOSC × Duty)

⎯

400*

⎯

mA

Output ON

resistor

ROH

20

OUT

= −45 mA

⎯

6.5

9.8

Ω

ROL

20

OUT

= 45 mA

⎯

5.0

7.5

Ω

Rise time

tr1

20

OUT

= 3300 pF

(Si4435

× 1)

⎯

50*

⎯

ns

Fall time

tf1

20

OUT

= 3300 pF

(Si4435

× 1)

⎯

50*

⎯

ns

9.

Power supply

control block

[CTL]

CTL input voltage

VON

14

IC Active mode

2

⎯

25

V

VOFF

14

IC Standby mode

0

⎯

0.8

V

Input current

ICTLH

14

CTL

= 5 V

⎯

100

150

µA

ICTLL

14

CTL

= 0 V

⎯

01

µA

10.

Bias voltage

block

[VH]

Output voltage

VH

19

VCC

= VCC (O)

= 8 V to 25 V,

VH

= 0 to 30 mA

VCC

− 6.5 VCC − 6.0 VCC − 5.5

V

11.

General

Standby current

ICCS

18

VCC

= VCC (O) ,

CTL

= 0 V

⎯

010

µA

Power supply cur-

rent

ICC

18

VCC

= VCC (O) ,

CTL

= 5 V

⎯

812

mA

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