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参数资料
| 型号： | APW7078OI-TU |
| 厂商： | Anpec Electronics Corporation |
| 英文描述： | Single PWM Switching Controller |
| 中文描述： | 单PWM开关控制器 |
| 文件页数： | 9/16页 |
| 文件大小： | 400K |
| 代理商： | APW7078OI-TU |
C opyright
ANPEC Electronics C orp.
Rev. A.3 - Nov., 2005
APW 7078
www.anpec.com.tw
9
-5
-4
-3
-2
-1
0
1
2
3
4
5
-40
-20
0
20
40
60
80
Typical Characteristics
(T
A
= 25
°
C, V
DD
= 3.3V, unless otherwise specified)
-10
-8
-6
-4
-2
0
2
4
6
8
10
1
2
3
4
5
Frequency Variation Ratio vs. Supply Voltage
Supply Voltage(V)
F
f
F
f
Frequency Variation Ratio vs. Temperature
Temperature(
°
C)
Function Description
Setting Oscillating Frequency
The oscillator circuit generate a triangular sawtooth
wave with a peak of 0.9V and through of 0.16V using
the timing capacitor(Ct) and the timing resistor(Rt) that
are connected to OSC pin. This oscillator can provide
oscillating frequency up to 1MHz.
Time
Vosc
t2
t1
V
H
V(t)
V
L
0.9V
0.16V
t
t
t
1
C
370
2mA
0.16V
0.9V
C
t
t
V
c
i
=
=
=
(
)
)
R
72
.
+
370
(
C
t
t
T
C
R
72
.
V
/
V
ln
C
R
t
e
V
)
V
t
t
2
1
t
t
L
H
t
t
2
C
R
t
H
t
t
=
+
=
=
=
=
Setting Output Voltage
The output voltage is set using the INV pin and a re-
sistor divider connected to the output as shown in the
typical operating circuit. The internal reference volt-
age is 0.5V with 2% variation, so the ratio of the feed-
back resistors sets the output voltage according to
the following equation:
T
A
=25C
R
T
=3.3k
C
T
=270pF
C
T
=270pF
R
T
=3.3k
相关PDF资料 |
PDF描述 |
|---|---|
| APW7078OI-TUL | Single PWM Switching Controller |
| APW7078XI-TR | Single PWM Switching Controller |
| APW7078XI-TRL | Single PWM Switching Controller |
| APW7078XI-TU | Single PWM Switching Controller |
| APW7078XI-TUL | Single PWM Switching Controller |
相关代理商/技术参数 |
参数描述 |
|---|---|
| APW7078OI-TUL | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Single PWM Switching Controller |
| APW7078XI-TR | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Single PWM Switching Controller |
| APW7078XI-TRL | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Single PWM Switching Controller |
| APW7078XI-TU | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Single PWM Switching Controller |
| APW7078XI-TUL | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Single PWM Switching Controller |
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