MB3878PFV 데이터 시트보기 (PDF) - Fujitsu

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MB3878PFV

DC/DC Converter IC for Charging

Fujitsu 

MB3878

s ELECTRICAL CHARACTERISTICS

Parameter

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

Symbol

Pin

No.

Conditions

Min.

Value

Typ.

Unit

Max.

Reference

voltage block

(Ref)

Output voltage

Input stability

Load stability

VREF

Line

Load

Ta = +25 °C

4.995

6

Ta = −30 °C to +85 °C 4.945

6 VCC = 7 V to 25 V



6 VREF = 0 mA to −1 mA 

5.000

5.000

3

1

5.045 V

5.055 V

10 mV

10 mV

Short-circuit

output current

Ios

6 VREF = 1 V

−25 −15

−5 mA

VTLH

Threshold voltage

Under voltage

VTHL

lockout protection

circuit block

Hysteresis width

VH

(UVLO)

Threshold voltage

VTLH

VTHL

18

VCC = VCC (O) ,

VCC =

18

VCC = VCC (O) ,

VCC =

18 VCC = VCC (O)

6 VREF =

6 VREF =

6.1

6.4

6.7 V

5.1

5.4

5.7 V

0.7

1.0

1.3 V

2.6

2.8

3.0 V

2.4

2.6

2.8 V

Hysteresis width

VH

6 VH = VTLH − VTHL

0.05 0.20 0.35 V

Soft-start block

(SOFT)

Charge current

ICS

22



−1.3 −0.8 −0.5 µA

Triangular

waveform

oscillator circuit

block (OSC)

Oscillation

frequency

Frequency

temperature

stability

fOSC 20 RT = 47 kΩ

260 290 320 kHz

∆f/fdt 20 Ta = −30 °C to +85 °C 

1*



%

Input offset

voltage

VIO

3, 4,

8, 9

FB1 = FB2 = 2 V



1

5 mV

Input bias current

IB

3, 4,

8, 9



−100 −30

 nA

Error amplifier

block

(Error Amp.1,

Error Amp.2)

Common mode

input voltage

range

Voltage gain

Frequency

bandwidth

VCM

3, 4,

8, 9



AV 5, 7 DC

BW 5, 7 AV = 0 dB

0



VCC −

1.8

V



100*  dB



2.0*

 MHz

VFBH 5, 7



Output voltage

VFBL 5, 7



4.7

4.9



V



20

200 mV

Output source

current

ISOURCE 5, 7 FB1 = FB2 = 2 V



−2.0 −0.6 mA

Output sink

current

ISINK 5, 7 FB1 = FB2 = 2 V

150 300

 µA

* : Standard design value.

6

(Continued)

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