an8049sh Panasonic Corporation of North America, an8049sh Datasheet - Page 24

• Manufacturer Part Number: an8049sh
• Description: 1.8-volt 3-channel Step-up, Step-down, And Polarity Inverting Dc-dc Converter Control Ic
• Manufacturer: Panasonic Corporation of North America

AN8049SH
I Application Notes (continued)
24
[12] Error amplifier frequency characteristics
V
4 mV[p-p]
1. Error amplifiers 1 and 2
2. Error amplifier 3
IN
V
4 mV[p-p]
(Test circuit)
(Test circuit)
IN
10 µF
2.3 V
10 µF
100 kΩ
1 V
1 kΩ
1 kΩ
1 kΩ
IN−3
IN+3
1 kΩ
IN−1
10 µF
Amp.3
100 kΩ
100 kΩ
Amp.1
1.26 V
V
REF
FB3
FB1
V
OUT
V
OUT
SDH00012BEB
−135
−180
−225
−10
−20
−45
−10
−20
−45
−90
180
135
40
30
20
10
90
45
40
30
20
10
0
0
0
0
1k
1k
10k
10k
100k
100k
Frequency (Hz)
Frequency (Hz)
1M
1M
10M
10M
100M
100M