MB3887 View Datasheet(PDF) - Fujitsu

Part Name

Description

Manufacturer

MB3887

DC/DC Converter IC for Charging Li-ion battery

Fujitsu 

MB3887

Triangular wave oscillation frequency

vs. Timing resistor

1M

Ta = +25 °C

VCC = 19 V

CTL = 5 V

100 k

10 k

10

100

1000

Timing resistor RT (kΩ)

Triangular wave oscillation frequency

vs. Ambient temperature

320

315

VCC = 19 V

310

CTL = 5 V

305

RT = 47 kΩ

300

295

290

285

280

275

270

265

260

−40 −20 0 +20 +40 +60 +80 +100

Ambient temperature Ta ( °C)

Triangular wave oscillation frequency

vs. Power supply voltage

340

330

320

310

300

290

280

270

260

0

Ta = +25 °C

CTL = 5 V

RT = 47 kΩ

5

10

15

20

25

Power supply voltage VCC (V)

Error amplifier threshold voltage

vs. Ambient temperature

4.25

2.24

VCC = 19 V

CTL = 5 V

4.23

2.22

4.21

4.20

4.19

4.18

4.17

4.16

4.15

−40 −20 0 +20 +40 +60 +80 +100

Ambient temperature Ta ( °C)

(Continued)

12

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