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MC34063ADR2 Datasheet(PDF) 7 Page - ON Semiconductor |
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MC34063ADR2 Datasheet(HTML) 7 Page - ON Semiconductor |
7 / 16 page MC34063A, MC33063A http://onsemi.com 7 1.25 V Ref Reg Vout 5.0 V/500 mA 1.0 µH Vout + 100 Optional Filter 8 7 Rsc 0.33 6 Vin 25 V 100 + R1 1.2 k R2 3.6 k SQ R Q2 Q1 Ipk Osc CT VCC + - Comp. 1 2 3 4 CT 470 pF 470 CO + 5 L 1N5819 220 µH Test Conditions Results Line Regulation Vin = 15 V to 25 V, IO = 500 mA 12 mV = ±0.12% Load Regulation Vin = 25 V, IO = 50 mA to 500 mA 3.0 mV = ±0.03% Output Ripple Vin = 25 V, IO = 500 mA 120 mVpp Short Circuit Current Vin = 25 V, RL = 0.1 Ω 1.1 A Efficiency Vin = 25 V, IO = 500 mA 83.7% Output Ripple With Optional Filter Vin = 25 V, IO = 500 mA 40 mVpp Figure 9. Step–Down Converter 10a. External NPN Switch 10b. External PNP Saturated Switch 8 7 6 Rsc Vin 1 2 Vout 8 7 6 Rsc Vin 1 2 V Figure 10. External Current Boost Connections for IC Peak Greater than 1.5 A |
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