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LR12 数据表(PDF) 4 Page - Supertex, Inc |
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LR12 数据表(HTML) 4 Page - Supertex, Inc |
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4 / 9 page  4 LR12 A081605 Typical Application Circuits LR12 VIN = 15V to 100V VOUT ADJ VIN R IOUT = 1.20V R + - 100nF Figure 3: High Voltage Adjustable Constant Current Source PWM IC LR12 Vout1 Vout2 + + - - Vcc VAuxiliary VIN=15V to 100V V OUT ADJ V IN FB Figure 2: SMPS Start-Up Circuit LR12 VIN=17V to 100V V OUT ADJ V IN * R1 6.04KΩ ±1% R2 18.2KΩ ±1% C2 100nF C1 V OUT =5.0V V OUT = 1.20V 1+ R2 R1 + IADJ R2 Figure 1: High Input Voltage, 5.0V Output Linear Regulator * Required for conditions where VIN is less than VOUT. |
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