mc33064dm ON Semiconductor, mc33064dm Datasheet - Page 5

• Manufacturer Part Number: mc33064dm
• Description: Undervoltage Sensing Circuit
• Manufacturer: ON Semiconductor

V
to 14.5V
in
Supply
Power
= 11.5
+
-
Figure 11. Voltage Monitor
4.7k
470
Input
Input
Overheating of the logic level power MOSFET due to insufficient gate voltage can be prevented with the above
circuit. When the input signal is below the 4.6 V threshold of the MC34064, its output grounds the gate of the L
MOSFET.
4.6V
1.2V
+
1.2V
ref
GND
-
+
ref
GND
-
+
330
22
Figure 14. MOSFET Low Voltage Gate Drive Protection
+
Figure 13. Low Power Switching Regulator
680
MPSW51A
Reset
Reset
1.2k
1N756
1.0k
Input
http://onsemi.com
1N5819
1.2V
25mH
470
ref
GND
-
+
Line Regulation
Load Regulation
Output Ripple
Efficiency
5
+
Test
+
-
270
I
V
O
O
= 50 mA
= 5.0 V
Figure 12. Solar Powered Battery Charger
Reset
Input
V
V
V
V
in
in
in
in
1.2V
= 11.5 V to 14.5 V, I
= 12.6 V, I
= 12.6 V, I
= 12.6 V, I
ref
GND
-
+
V
CC
Conditions
MTP3055EL
R
O
O
O
L
= 0 mA to 50 mA
= 50 mA
= 50 mA
2
O
= 50 mA
Reset
35 mV
12 mV
60 mVpp
77%
Results
Solar
Cells