參數(shù)資料
型號: 33063AP
廠商: Motorola, Inc.
英文描述: DC-to-DC CONVERTER CONTROL CIRCUITS
中文描述: 型DC - DC變換器控制電路
文件頁數(shù): 6/12頁
文件大?。?/td> 200K
代理商: 33063AP
MC34063A MC33063A
6
MOTOROLA ANALOG IC DEVICE DATA
1.25 V
Ref
Reg
Vout
5.0 V/500 mA
1.0
μ
H
Vout
+
100
Optional Filter
8
7
Rsc
0.33
6
Vin
25 V
100
+
R1
1.2 k
R2
3.6 k
S
Q
R
Q2
Q1
Ipk
Osc
CT
VCC
+
Comp.
1
2
3
CT
4
470
pF
470
CO
+
5
L
1N5819
220
μ
H
Figure 9. Step–Down Converter
Test
Conditions
Results
Line Regulation
Vin = 15 V to 25 V, IO = 500 mA
Vin = 25 V, IO = 50 mA to 500 mA
Vin = 25 V, IO = 500 mA
Vin = 25 V, RL = 0.1
Vin = 25 V, IO = 500 mA
Vin = 25 V, IO = 500 mA
12 mV =
±
0.12%
Load Regulation
3.0 mV =
±
0.03%
Output Ripple
120 mVpp
Short Circuit Current
1.1 A
Efficiency
83.7%
Output Ripple With Optional Filter
40 mVpp
10a. External NPN Switch
10b. External PNP Saturated Switch
8
7
6
Rsc
Vin
1
2
Vout
8
7
6
Rsc
Vin
1
2
Vout
Figure 10. External Current Boost Connections for IC Peak Greater than 1.5 A
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