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MC34063A Datasheet(PDF) 9 Page - Texas Instruments

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Part No. MC34063A
Description  1.5-A Peak Boost/Buck/Inverting Switching Regulators
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

MC34063A Datasheet(HTML) 9 Page - Texas Instruments

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Q
S
R
CT
Ipk
Q2
Q1
2
1
Oscillator
_
+
1.25-V
Reference
Regulator
4
5
3
8
7
6
RSC
0.24 W
953 W
R1
CO
1N5819
1500 pF
R2
8.2 kW
100 mF
+
VCC
VOUT
−12 V/100 mA
1.0 mH
100 mF
Optional Filter
VIN
4.5 V to 6.0 V
+
+
1000 mF
+
L
88 mH
Comparator
V
OUT = –1.25 (1+
R2
R1
)
V
IN
V
OUT
V
IN
V
OUT
8
7
6
4
3
2
1
8
7
6
4
3
2
1
5
5
a) External NPN Switch
b) External PNP Saturated Switch
VIN
8
7
6
1
2
8
7
6
1
2
RSC
VIN
RSC
VOUT
VOUT
a) EXTERNAL npn SWITCH
b) EXTERNAL pnp SATURATED SWITCH
MC33063A, MC34063A
www.ti.com
SLLS636N – DECEMBER 2004 – REVISED JANUARY 2015
Application Information (continued)
Figure 6. Buck Regulator Connections for IC Peak Greater Than 1.5 A
Figure 7. Inverting Regulator Connections for IC Peak Greater Than 1.5 A
9.2 Typical Application
9.2.1
Voltage-Inverting Converter Application
Copyright © 2004–2015, Texas Instruments Incorporated
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9
Product Folder Links: MC33063A MC34063A


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