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BA17818T Scheda tecnica(PDF) 9 Page - Rohm |
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BA17818T Scheda tecnica(HTML) 9 Page - Rohm |
9 / 11 page BA178!!T / FP series Regulator ICs " " " " Measurement circuits 0.1 µF IO VIN V OUTPUT INPUT COMMON Fig. 1 Measurement circuit for output voltage, input stability,load regulation, temperature coefficient of output voltage 0.1 µF 0.33 µF 100 µF VIN IO eOUT eIN 10 Ω5W eIN=1Vrms f=120Hz Ripple rejection ratio R.R. = 20 log eIN eOUT V ~ OUTPUT INPUT COMMON V ~ Fig. 2 Measurement circuit for ripple rejection rario () OUTPUT INPUT COMMON 0.1 0.33 µF IO VIN Noise meter BPF 10Hz ∼ 100kHz 10 µF + µF Fig. 3 Measurement circuit for output noise voltage V OUTPUT INPUT COMMON 0.1 µF 0.33 µF IO IA VIN V ∆V= 100mA Fig. 4 Measurement circuit for Minimum I / O voltage differential IO OUTPUT INPUT COMMON 0.1 0.33 VIN A µF µF Fig. 5 Measurement circuit for bias current and bias current change A OUTPUT INPUT COMMON 0.1 0.33 IO VIN µF µF Fig. 6 Measurement circuit for Fig. 1 output short-circuit current " " " " Electrical characteristic curves OUTPUT CURRENT : IOUT (A) VIN=10V BA17805T 10 8 6 4 2 0 1.0 1.2 1.4 1.6 1.8 2.0 Fig. 7 Current limit characteristics JUNCTION TEMPERATURE : Tj (˚C) 6 5 4 3 2 1 0 25 50 75 100 125 150 175 200 VIN=10V, IOUT=0 BA17805T Fig. 8 Thermal cutoff circuit Fig. 2 characteristics 25 20 15 10 5 0 25 50 75 100 125 150 (1) Infinite heat sink, θj-c = 5.7 (˚C/W) (2) 100 ×100×2 (mm3), with Al heat sink (3) 50 ×50×2 (mm3), with Al heat sink (4) No heat sink θj-a = 62.5 (˚C/W) (3) 6.5 (4) 2.0 AMBIENT TEMPERATURE : Ta (˚C) (1) 22.0 (2) 11.0 Fig.9 Ta - power dissipation characteristics (TO220) Note: With Al heat sink, tightening torque = 6 kg/cm and silicon grease as lubricant |
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