MB3888 Datasheet, PDF (13/30 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging Li-ion Battery

MB3888
(Continued)
Error amplifier gain and phase vs. Frequency
Ta = +25 °C
40
AV
180
20
φ
90
0
0
−20
−90
−40
−180
10 kΩ
1 µF₊
IN
10 kΩ
2.4 kΩ
10 kΩ
2.5 V
VCC = 19 V
4.2 V
240 kΩ
(7)
14
20
13
(8)
10 kΩ
−
+
15
+
(6)
Error Amp1
(Error Amp2)
OUT
1k
10 k
100 k
1M
10 M
Frequency f (Hz)
Current detection amplifier and phase vs. Frequency
Ta = +25 °C
40
180
AV
20
90
φ
0
0
−20
−90
10 kΩ
1 µF
+
IN
10 kΩ
−40
−180
VCC = 19 V
11 ₊
12
10 ^−
Current Amp
16.8 V
OUT
1k
10 k 100 k
1M
10 M
Frequency f (Hz)
Power dissipation vs. Ambient temperature
600
540
500
400
300
200
100
0
−40 −20 0
20 40 60 80 100
Ambient temperature Ta ( °C)
13