MC34163 ON Semiconductor, MC34163 Datasheet - Page 12

• Manufacturer Part Number: MC34163
• Description: (MC33163 / MC33163) Step-Up/Down/Inverting Switching Regulators
• Manufacturer: ON Semiconductor

8
7
6
5
4
3
2
1
Figure 26A. External NPN Switch
Line Regulation
Load Regulation
Output Ripple
Short Circuit Current
Efficiency, Without Bootstrap
Efficiency, With Bootstrap
Figure 26. External Current Boost Connections for I
+
12 V
470 pF
V
in
C
T
0.075
R
(Bottom View)
R
8.2 k
330
C
SC
2
+
in
Test
+
+
953
R
8
7
6
5
4
3
2
1
1
Q
1
LVI
+
Q
0.25 V
Oscillator
2
+
+
−
Figure 25. Voltage−Inverting Converter
10
11
12
13
14
15
16
Thermal
+
9
+
45 k
+
+
−
1.125 V
1.25 V
+
+
−
Current
Limit
(Bottom View)
MC34163, MC33163
V
V
V
V
V
V
in
in
in
in
in
in
Feedback
Comparator
15 k
http://onsemi.com
Q
= 12 V, I
= 12 V, R
= 12 V, I
= 12 V, I
= 9.0 V to 16 V, I
= 12 V, I
3
+
Latch
R
S
Q
Condition
O
O
O
+
O
12
L
= 1.0 A
= 1.0 A
= 1.0 A
= 0.6 A to 1.0 A
7.0 V
= 0.1 W
2.0 mA
Q
1
60
Q
O
2
= 1.0 A
Figure 26B. External PNP Saturated Switch
10
11
12
13
14
15
16
9
0.02
8
7
6
5
4
3
2
1
pk (Switch)
Coilcraft LO451−A
1N5822
2200
180 mH
R
C
+
B
B
L
+
5.0 mV = ± 0.02%
2.0 mV = ± 0.01%
130 mVpp
3.2 A
73.1%
77.5%
Greater Than 3.4 A
C
O
(Bottom View)
+
Results
+
V
− 12 V/1.0 A
out
Q
1
Q
2
10
11
12
13
14
15
16
9
Q
3