MB3870 Datasheet, PDF (7/25 Pages) Fujitsu Component Limited. – Pentium II DC/DC Converter IC

MB3870
s RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Condition
Power supply voltage
Bias voltage
Boot voltage
Reference voltage output
current
Input voltage
Output current
Peak output current
Oscillator frequency
Timing resistance
Boot capacitance
Reference voltage output
capacitance
Soft start capacitance
Discharge control resistance
Short detection capacitance
Operating temperature
VCC
VB
VCB
IOR
VIN
VIN
VIN
IO
IPG
IO
fOSC
RT
CB
CREF
CS
RS
CSCP
Ta
—
—
—
—
–IN pin
CTL, ENB,
VD4 to VD0 pins
VSENSE
OUT pin
PWRGOOD pin
Duty ≤ 5%
(t = 1/fOSC × Duty)
—
—
—
—
—
—
—
—
Min.
4.6
—
—
–1
0
0
0
–100
—
–700
100
51
—
—
—
—
—
–30
Value
Typ.
5
5
—
—
—
—
—
—
—
—
200
130
0.1
0.1
4700
100
2200
+25
Unit
Max.
18
V
18
V
30
V
0
mA
VCC – 0.9 V
18
V
VCC
V
100
mA
1
mA
700
mA
500
kHz
270
kΩ
1.0
µF
1.0
µF
10000 pF
470
kΩ
10000 pF
+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 the recommended operating conditions. 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 representative beforehand.
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