MC34163 ON Semiconductor, MC34163 Datasheet - Page 11

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

Figure 24A. External NPN Switch
8
7
6
5
4
3
2
1
Line Regulation
Load Regulation
Output Ripple
Efficiency
Figure 24. External Current Boost Connections for I
Low Voltage
+
Indicator
Output
(Bottom View)
12 V
V
in
2.2 k
Test
R
+
1
680 pF
0.075
R
C
330
SC
C
in
+
T
R
1.0 k
LVI
Q
+
1
47 k
R
Q
2
8
7
5
4
3
2
1
6
2
10
12
13
14
15
16
11
LVI
9
+
0.25 V
Oscillator
Figure 23. Step−Up Converter
+
+
−
+
Thermal
MC34163, MC33163
V
V
V
V
Q
+
45 k
+
in
in
in
in
3
−
1.25 V
+
1.125 V
http://onsemi.com
= 12 V, I
= 12 V, I
+
+
−
= 9.0 V to 16 V, I
= 12 V, I
Current
Limit
(Bottom View)
Feedback
Comparator
15 k
Condition
+
O
O
O
11
= 0.6 A
= 0.6 A
= 0.1 A to 0.6 A
Latch
R
S
Q
+
Figure 24B. External PNP Saturated Switch
O
7.0 V
Q
2.0 mA
= 0.6 A
1
60
Q
pk (Switch)
2
8
7
6
5
4
3
2
1
10
12
13
14
15
16
11
9
L
+
+
30 mV = ± 0.05%
50 mV = ± 0.09%
140 mVpp
88.1%
1N5822
Greater Than 3.4 A
C
330
(Bottom View)
O
180 mH
Coilcraft
LO451−A
+
Results
V
28 V/600 mA
out
+
Q
1
Q
2
10
11
12
13
14
15
16
9
Q3