MB3875 Datasheet, PDF (13/27 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging

MB3875/MB3877
(Continued)
Error amplifier gain and phase vs. frequency
Ta = +25 °C
40
AV
180
φ
20
90
0
0
−20
−90
−40
−180
100 1 k 10 k 100 k 1 M 10 M
4.2 V
VCC = 16 V (MB3875)
VCC = 19 V (MB3877)
240 kΩ
IN
−+
10 kΩ
2.4 kΩ
11 −
(6)
10 kΩ ^{8 +}
(7)
2.088 V
OUT
9
(3)
Frequency f (Hz)
Current detection amplifier gain and phase vs. frequency
Ta = +25 °C
40
180
AV
20
90
0
φ
0
−20
−90
−40
−180
100
1k
10 k
100 k
1M
Frequency f (Hz)
Power dissipation vs. ambient temperature
800
740
700
600
500
400
300
200
100
0
−40 −20 0
20 40
60 80 100
Ambient temperature Ta (°C)
VCC = 16 V (MB3875)
VCC = 19 V (MB3877)
0.1 V
∗
24
+
100 kΩ
(13)
× 25
4
1
−
(10)
OUT
(12)
Current Amp.2
(Current Amp.1)
∗ : MB3875 12.6 V
MB3877 16.8 V
13