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MC33064D-5R2 Scheda tecnica(PDF) 5 Page - ON Semiconductor |
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MC33064D-5R2 Scheda tecnica(HTML) 5 Page - ON Semiconductor |
5 / 12 page 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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