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參數資料
| 型號： | MC34065P-L |
| 廠商： | MOTOROLA INC |
| 元件分類： | 穩壓器 |
| 英文描述： | HIGH PERFORMANCE DUAL CHANNEL CURRENT MODE CONTROLLERS |
| 中文描述： | 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數： | 11/16頁 |
| 文件大小： | 419K |
| 代理商： | MC34065P-L |
MC34065–H, L MC33065–H, L
11
MOTOROLA ANALOG IC DEVICE DATA
Figure 25. Bipolar Transistor Drive
Figure 26. Isolated MOSFET Drive
Figure 27. Dual Charge Pump Converter
The totem–pole outputs can furnish negative base current for enhanced
transistor turn–off, with the addition of capacitor C1.
IB
+
–
0
Base Charge
Removal
Vin
C1
RS
–
+
Q1
+
_
+
–
–
+
+
–
5.0Vref
S
R
Q
VCC
Vin
16
PWM
Latch 1
7
6
D1
NP
NS
C
R
Isolation
Boundary
Ipk
V(Pin 6)
1.4
3RS
NP
NS
The capacitor’s equivalent series resistance must limit the Drive Output current to 400 mA. An additional series resistor may be required
when using tantalum or other low ESR capacitors. The positive output can provide excellent line and load regulation by connecting the
R2/R1 resistor divider as shown.
Output Load Regulation
IO (mA)
0
1.0
5.0
10
50
+VO (V)
28.43
27.72
27.04
26.20
20.52
–VO (V)
–13.89
–12.90
–12.25
–11.44
–5.80
–
+
+
_
+
_
–
+
+
–
–
+
+
–
–
+
+
+
+
+
15
1
3
2
4
5
14
13
12
1.0nF
12k
2.5V
R
R
Bias
Osc.
5.0Vref
20k
1.0mA
1.0mA
R
2R
1.0V
EA2
8
9
S
R
R
Q
PWM
Latch 2
S
Q
R
PWM
Latch 1
R
16
VCC= 15V
+
47
27
10
7
47
6
10
11
47
R2
R1
+VO
≈
2.0 VCC
–VO
≈
–VCC
1N5819
1N5819
2R
250
μ
A
10
10
10
10
27
10
Connect to Pin 4 for
closed–loop regulation.
VO
2.5
R2
R1
1
EA1
1.0V
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