MC34163 ON Semiconductor, MC34163 Datasheet - Page 10

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

Indicator Output
Figure 22A. External NPN Switch
Low Voltage
8
7
6
5
4
3
2
1
Line Regulation
Load Regulation
Output Ripple
Short Circuit Current
Efficiency, Without Bootstrap
Efficiency, With Bootstrap
Figure 22. External Current Boost Connections for I
+
12 V
V
in
(Bottom View)
680 pF
0.075
R
330
Test
C
SC
C
in
+
T
R
10 k
C
LVI
DLY
+
+
8
7
6
5
4
3
2
1
Q
1
LVI
+
Q
0.25 V
Oscillator
2
+
+
−
10
11
12
13
14
15
16
9
Thermal
+
Figure 21. Step−Down Converter
+
45 k
+
−
+
1.125 V
1.25 V
+
+
−
MC34163, MC33163
Current
V
V
V
V
V
V
Limit
(Bottom View)
in
in
in
in
in
in
http://onsemi.com
= 12 V, I
= 12 V, R
= 12 V, I
= 12 V, I
= 8.0 V to 24 V, I
= 12 V, I
Feedback
Comparator
15 k
Q
3
+
Latch
Condition
R
S
Q
O
O
O
O
10
L
= 3.0 A
= 3.0 A
= 3.0 A
= 0.6 A to 3.0 A
+
= 0.1 W
7.0 V
2.0 mA
Q
60
1
O
Figure 22B. External PNP Saturated Switch
Q
= 3.0 A
2
8
7
6
5
4
3
2
1
10
11
12
13
14
15
16
9
pk (Switch)
1N5822
C
+
B
0.02
(Bottom View)
R
6.0 mV = ± 0.06%
2.0 mV = ± 0.02%
36 mVpp
3.3 A
76.7%
81.2%
B
Greater Than 3.4 A
2200
+
L
Results
+
C
+
O
180 mH
Coilcraft LO451−A
Q
1
Q
2
10
11
12
13
14
15
16
9
V
5.05 V/3.0 A
out
Q
3