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MC34063A Datasheet(PDF) 8 Page - ON Semiconductor

Part No. MC34063A
Description  1.5 A, Step-Up/Down/Inverting Switching Regulators
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

MC34063A Datasheet(HTML) 8 Page - ON Semiconductor

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MC34063A, MC33063A, SC34063A, SC33063A, NCV33063A
www.onsemi.com
8
1.25 V
Ref
Reg
Vout
-12 V/100 mA
Vout
1.0
mH
+
100
Optional Filter
8
7
Rsc
0.24
6
Vin
4.5 V to 6.0 V
100
+
5
R2
8.2 k
SQ
R
Q2
Q1
Ipk
OSC
CT
Comp.
R1
953
1
2
3
4
+
1500
pF
+
-
1N5819
1000
mf
+
88
mH
VCC
CO
L
Test
Conditions
Results
Line Regulation
Vin = 4.5 V to 6.0 V, IO = 100 mA
3.0 mV =
±0.012%
Load Regulation
Vin = 5.0 V, IO = 10 mA to 100 mA
0.022 V =
±0.09%
Output Ripple
Vin = 5.0 V, IO = 100 mA
500 mVpp
Short Circuit Current
Vin = 5.0 V, RL = 0.1 W
910 mA
Efficiency
Vin = 5.0 V, IO = 100 mA
62.2%
Output Ripple With Optional Filter
Vin = 5.0 V, IO = 100 mA
70 mVpp
Figure 13. Voltage Inverting Converter
13a. External NPN Switch
13b. External PNP Saturated Switch
8
7
6
Vin
1
2
Vout
8
7
6
Vin
1
2
Vout
Figure 14. External Current Boost Connections for IC Peak Greater than 1.5 A
3
4
+
3
4
+


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