參數(shù)資料
型號(hào): MC33065DW-H
廠商: MOTOROLA INC
元件分類: 穩(wěn)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, PDSO16
封裝: PLASTIC, SOP-16
文件頁(yè)數(shù): 12/15頁(yè)
文件大?。?/td> 494K
代理商: MC33065DW-H
MC34065 MC33065
12
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
+
_
+
+
+
5.0 V Ref
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 1.0 A. 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) +VO (V) –VO (V)
0
1.0
5.0
10
50
24.4
29.8
28.3
27.9
27.5
–14.7
–13.4
–12.9
–12.5
–9.5
+
+
_
+
_
+
+
+
+
+
+
+
+
+
15
1
3
2
4
5
14
13
12
1.0 nF
12 k
2.5 V
R
R
Bias
Osc
5.0 Vref
20 k
1.0 mA
1.0 mA
R
2R
0.5 V
EA2
8
9
S
R
R
Q
PWM
Latch 2
S
Q
R
PWM
Latch 1
R
16
VCC= 15 V
+
47
15 10
7
47
6
10
11
47
R2
R1
+VO
2.0 VCC
–VO
–VCC
1N5819
1N5819
2R
250
μ
A
15 10
Connect to Pin 4 for
closed–loop regulation.
V
O
2.5
R2
R1
1
EA1
0.5 V
17 V
17 V
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