MB3878 Datasheet, PDF (5/24 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging

MB3878
s ABSOLUTE MAXIMUM RAGINGS
Parameter
Symbol
Conditions
Rating
Unit
Min.
Max.
Power supply voltage
VCC VCC, VCC (O)

28
V
Output current
IOUT


60
mA
Peak output current
IOUT Duty ≤ 5 % (t = 1 / fOSC × Duty)

500
mA
Power dissipation
PD Ta ≤ +25 °C

740*
mW
Storage temperature
Tstg

−55
+125
°C
* : The package is mounted on the dual-sided epoxy board (10 cm × 10 cm).
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
s RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Conditions
Min.
Value
Typ.
Unit
Max.
Power supply voltage
VCC VCC, VCC (O)
7

25
V
Reference voltage output
current
IREF

−1

0 mA
VH pin output current
IVH

0

30 mA
Input voltage
VINE −INE1 to −INE3, +INE1, +INE2
0
VINC +INC1, +INC2, −INC1, −INC2
0
 VCC − 1.8 V

VCC
V
OUTD pin output voltage
VOUTD

0

17
V
OUTD pin output current
IOUTD

0

2 mA
CTL pin input voltage
VCTL

0

25
V
output current
IOUT

−45

45 mA
Peak output current
IOUT Duty ≤ 5 % (t = 1 / fosc × Duty) −450

450 mA
Oscillator frequency
fOSC

100
290
500 kHz
Timing resistor
RT

33
47
130 kΩ
Soft-start capacitor
CS


2200 100000 pF
VH pin capacitor
CVH


0.1
1.0 µF
Reference voltage output
capacitor
CREF


0.1
1.0 µF
Operating ambient temperature Ta

−30
+25
+85 °C
WARNING: The recommended operating conditions are required in order to ensure the normal operation of the
semiconductor device. All of the device’s electrical characteristics are warranted when the device is
operated within these ranges.
Always use semiconductor devices within their recommended operating condition ranges. Operation
outside these ranges may adversely affect reliability and could result in device failure.
No warranty is made with respect to uses, operating conditions, or combinations not represented on
the data sheet. Users considering application outside the listed conditions are advised to contact their
FUJITSU representatives beforehand.
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