MB3817 Datasheet, PDF (10/29 Pages) Fujitsu Component Limited. – Switching Regulator Controller

MB3817
(Continued)
50
40
30
20
10
0
−10
−20
−30
−40
−50
1k
Error amp. frequency
225
Ta = +25 °C
180
135
φ
90
45
Av
0
−45
−90
−135
−180
−225
10 k
100 k
1M
10 M
Frequency fOSC (Hz)
• Measurement circuit
11 kΩ
10 µF
11 kΩ
VCC = 6 V
240 kΩ
2.4 kΩ
4−
5
3+
VREF
Error Amp.
Output current setting pin voltage vs.
output current setting pin current
1.0
0.9
VCC = 6 V
Ta = +25 °C
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
−10
−20
−30
−40
−50
Output current setting pin current IE (mA)
Power dissipation vs. ambient temperature
500
440
400
300
200
100
0
−40 −20 0
20 40 60 80 100 120
Ambient temperature Ta (°C)
10