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參數(shù)資料
| 型號(hào)： | AN8038S |
| 廠商： | PANASONIC CORP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | AC-DC switching power supply control IC with RCC local resonance circuit for improved conformance with energy conservation laws |
| 中文描述： | 2 A SWITCHING CONTROLLER, PDSO8 |
| 封裝： | 0.225 INCH, PLASTIC, SOP-8 |
| 文件頁(yè)數(shù)： | 11/22頁(yè) |
| 文件大小： | 179K |
| 代理商： | AN8038S |
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Voltage Regulators
AN8038, AN8038S
11
I
Application Notes (continued)
[2] Operation descriptions (continued)
2. Oscillator circuit (continued)
CF pin voltage
4.2 V
Control switching voltage V
RSTB
Output monitoring voltage V
FB
0 V
0 V
Figure 2. On-period block diagram and control waveforms
On-period
Off-period
V
CC
1.5 V
Out pin voltage
Input voltage correction
E
IN
: larger
→
On-period: shorter
PC
IFB
TR
Current mirror
1 : 1
I
TR
=
I
ON
C
C
CF
V
CC
GND
Out
I
TR
E
IN
E
IN
+
N
P
N
B
R
TR2
R
TR1
I
TR
Current mirror
5 : 1
I
ON
280
μ
A
typ.
20 k
V
FB
t
ON
is reduced since I
TR
increases when E
IN
is large.
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