Datasheet

MC34151, MC33151
http://onsemi.com
9
Output Load Regulation
I
O
(mA) +V
O
(V) −V
O
(V)
0 27.7 −13.3
1.0 27.4 −12.9
10 26.4 −11.9
20 25.5 −11.2
30 24.6 −10.5
50 22.6 −9.4
Figure 23. Controlled MOSFET Drive Figure 24. Bipolar Transistor Drive
Figure 25. Dual Charge Pump Converter
The totem-pole outputs can furnish negative base current for enhanced
transistor turn-off, with the addition of capacitor C
1
.
The capacitor's equivalent series resistance limits the Drive Output Current
to 1.5 A. An additional series resistor may be required when using tantalum or
other low ESR capacitors.
In noise sensitive applications, both conducted and radiated EMI can
be reduced significantly by controlling the MOSFET's turn-on and
turn-off times.
+
100k
V
in
R
g(on)
R
g(off)
+
I
B
+
0
-
Base Charge
Removal
100k
C
1
V
in
+
-
V
CC
= 15 V
4.7 0.1
6
5.7V
6.8 10
7
1N5819
2
+ V
O
≈ 2.0 V
CC
47
100k
100k
5
6.8 10
1N5819
4
- V
O
≈ - V
CC
330pF
47
3
10k
+
+
+
+
+
+
+
+
+
+
+