MC33063A, MC34063A
1.5 A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
TYPICAL CHARACTERISTICS
8
1
S Q
R
7
Q2
Q1
2
L
88
µH
CT
3
1.25-V
Reference
Regulator
1N5819
+
1500 pF
4
1.0
µH
Vout
−12 V/100 mA
CO
1000
µF
100
µF
+
+
Vout
Vin
4.5 V to
6.0 V
RSC
0.24
Ω
6
+
VCC
Ipk
Oscillator
100
µF
5
+
_ Comparator
R1
R2
8.2 kΩ
953
Ω
Optional Filter
TEST
Line Regulation
Load Regulation
Output Ripple
Short-Circuit Current
Efficiency
Output Ripple With Optional Filter
CONDITIONS
VIN = 4.5 V to 6 V, IO = 100 mA
VIN = 5 V, IO = 10 mA to 100 mA
VIN = 5 V, IO = 100 mA
VIN = 5 V, RL = 0.1
Ω
VIN = 5 V, IO = 100 mA
VIN = 5 V, IO = 100 mA
RESULTS
3 mV
±
0.12%
0.022 V
±
0.09%
500 mVPP
910 mA
62.2%
70 mVPP
Figure 10. Voltage-Inverting Converter
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
9
TI [ TEXAS INSTRUMENTS ]
