MB39A125 Datasheet, PDF (18/64 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging Li-ion Battery

MB39A125/126
(VCC = 19 V, VREF = 0 mA, Ta = +25 °C)
Parameter
Sym-
bol
Pin No.
Condition
Min
Value
Typ
Unit
Max
Re-
marks
6.
Frequency
bandwidth
BW
2, 10 AV = 0 dB
⎯
2*
⎯ MHz
Current
Detection ^Output
VOUTCH 2, 10
⎯
4.7 4.9 ⎯ V
Amplifier ^voltage
VOUTCL 2, 10
⎯
⎯
20 200 mV
Block
Output
[Current
source cur- ISOURCE 2, 10 OUTC1 = OUTC2 = 2 V ⎯
−2
−1 mA
Amp1,
rent
Current
Amp2]
Output sink
current
ISINK
2, 10 OUTC1 = OUTC2 = 2 V 150
300
⎯ µA
7.
VTL
PWM Comp.
Block
[PWM
Threshold
voltage
VTH
Comp.]
15 Duty cycle = 0%
15 Duty cycle = 100%
1.4 1.5 ⎯ V
⎯ 2.5 2.6 V
Output
source cur- ISOURCE
rent
OUT = 13 V,
20 Duty ≤ 5%
(t = 1 / fosc × Duty)
⎯ −400* ⎯ mA
8.
Output
block
[OUT]
Output sink
current
ISINK
Output ON ^ROH
resistance _ROL
OUT = 19 V,
20 Duty ≤ 5%
(t = 1 / fosc × Duty)
20 OUT = −45 mA
20 OUT = 45 mA
⎯ 400* ⎯ mA
⎯ 6.5 9.8 Ω
⎯ 5.0 7.5 Ω
Rise time
tr1
20 OUT = 3300 pF
⎯
50* ⎯ ns
Fall time
tf1
20 OUT = 3300 pF
⎯
50* ⎯ ns
9.
VTLH
Low Input ^Threshold
Voltage
Detection
voltage
VTHL
Block
Hysteresis
[UV Comp.] _width
VH
21
VCC = ,
−INC1 = 16.8 V
21
VCC = ,
−INC1 = 16.8 V
21
⎯
17.2 17.4 17.6 V
16.8 17.0 17.2 V
⎯ 0.4* ⎯ V
10.
Threshold ^VTLH
AC Adapter _voltage
Voltage
VTHL
Detection
Block
Hysteresis
width
VH
[AC Comp.]
7 ACIN =
7 ACIN =
7
⎯
1.3 1.4 1.5 V
1.2 1.3 1.4 V
⎯ 0.1* ⎯ V
* : Standard design value
(Continued)
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