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MC33064D-005 データシート(Datasheet) 5 Page - ON Semiconductor

部品番号. MC33064D-005
部品情報  UNDERVOLTAGE SENSING CIRCUIT
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メーカー  ONSEMI [ON Semiconductor]
ホームページ  http://www.onsemi.com
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Figure 11. Voltage Monitor
Figure 12. Solar Powered Battery Charger
Figure 13. Low Power Switching Regulator
Figure 14. MOSFET Low Voltage Gate Drive Protection
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 L2
MOSFET.
270
4.6V
VCC
RL
MTP3055EL
2 (2)
1 (1)
3 (4)
+
1.2Vref
2 (2)
1 (1)
3 (4)
+
1.2Vref
Power
Supply
+
1.0k
2 (2)
1 (1)
3 (4)
+
1.2Vref
+
Solar
Cells
2 (2)
1 (1)
3 (4)
+
1.2Vref
Vin = 11.5
to 14.5V
470
+
MPSW51A
25
mH
VO = 5.0 V
IO = 50 mA
470
+
680
22
+
1N5819
1.2k
330
1N756
4.7k
MC34064, MC33064, NCV33064
http://onsemi.com
5
Test
Conditions
Results
Line Regulation
Vin = 11.5 V to 14.5 V, IO = 50 mA
35 mV
Load Regulation
Vin = 12.6 V, IO = 0 mA to 50 mA
12 mV
Output Ripple
Vin = 12.6 V, IO = 50 mA
60 mVpp
Efficiency
Vin = 12.6 V, IO = 50 mA
77%




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