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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)： | 5/22頁(yè) |
| 文件大?。?/td> | 179K |
| 代理商： | AN8038S |
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Voltage Regulators
AN8038, AN8038S
5
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Low-voltage protection (U.V.L.O.)
start/stop supply voltage difference
V
CC
5.4
V
Transformer reset (TR) detection
threshold hysteresis width
TR
V
TH
0.1
V
Oscillator (CF) upper limit voltage
V
CLH
I
IFB
=
0.5 mA, C
F
=
1 000 pF
I
IFB
=
0.5 mA, C
F
=
1 000 pF
I
IFB
=
0.2 mA, C
F
=
1 000 pF
I
IFB
=
0.2 mA, C
F
=
1 000 pF
V
TR
=
0.1 V
I
IFB
=
0.2 mA, C
F
=
1 000 pF
V
TR
=
0.1 V
I
IFB
=
1.3 mA, C
F
=
1 000 pF
I
TR
=
450
μ
A
I
IFB
=
1.3 mA, C
F
=
1 000 pF
I
TR
=
450
μ
A
10% to 90%, I
OUT
=
0 mA
10% to 90%, I
OUT
=
0 mA
4.2
V
Oscillator (CF) lower limit voltage 1
V
CFL1
1.0
V
Oscillator (CF) lower limit voltage 2
V
CFL2
t
ON(max)
0.1
V
Maximum on-period
12
μ
s
Minimum off-period 1
t
OFF(min)1
2.6
μ
s
Minimum off-period 2
t
OFF(min)2
67
μ
s
Light-load oscillator frequency
f
OSC2
15
kHz
Output rise time
t
r
40
ns
Output fall time
t
f
20
ns
TR output response time
t
TR
400
ns
CLM output response time
t
CLM
100
ns
Circuit current during startup 2
I
START2
T
a
=
30
°
C to
+
85
°
C
100
190
300
μ
A
I
Electrical Characteristics at V
CC
=
18 V, T
a
=
25
°
C (continued)
Design Reference Data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Pin No.
Equivalent Circuit
Description
I/O
1
TR:
Transformer reset detection input.
When a transformer reset is detected, i.e., a low
level is input to this pin, the IC output goes high.
However, the transformer reset signal is ignored
if the signal is shorter than the minimum off-
period determined by the C
F
pin. Also note that
the maximum on-period is corrected according
to the source current.
I
I
Terminal Equivalent Circuits
1
TR
V
REF
7 V
High-side
clamp
Low-side
clamp
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