MC33063A-Q1_15 Datasheet, PDF (15/26 Pages) Texas Instruments – MC33063A-Q1 1.5-A Peak Boost, Buck, Inverting Switching Regulator

www.ti.com
8.2.3 Voltage Inverter Converter
MC33063A-Q1
SLLS654C – APRIL 2005 – REVISED DECEMBER 2014
8
1
SQ
R
Q2
Q1
7
R_SC
0.24 W
V_IN
4.5 V to 6.0 V
6
V_CC
+
100 mF
5
I_pk
Oscillator ^CT
+
_ ^Comparator
R2
8.2 kW
R1
953 W
2
L
88 mH
1.25-V
Reference
Regulator
3
+
1500 pF
4
1N5819
1.0 mH
V_OUT
−12 V/100 mA
C_O
1000 mF ₊
100 mF
V_OUT
+
1.25 (1 ^RR21)
Figure 16. Voltage-Inverting Converter
Optional Filter
8
7
R_SC
V_IN
6
1
8
2
7
V_{OUT RSC}
V_IN
6
1
V_OUT
2
a) EXTERNAL npn SWITCH
b) EXTERNAL pnp SATURATED SWITCH
Figure 17. External Current-Boost Connections for Voltage Inverter Converter
Copyright © 2005–2014, Texas Instruments Incorporated
Product Folder Links: MC33063A-Q1
Submit Documentation Feedback
15