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LT3505IMS8E Datasheet(PDF) 6 Page - Linear Technology |
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LT3505IMS8E Datasheet(HTML) 6 Page - Linear Technology |
6 / 24 page LT3505 6 3505fc TYPICAL PERFORMANCE CHARACTERISTICS Switch Current Limit Typical Minimum On Time RT Pin Bias Voltage Operating Waveforms Operating Waveforms, Discontinuous Mode TEMPERATURE ( °C) –50 1.0 1.1 1.3 1.4 1.5 2.0 1.7 0 25 100 125 1.2 1.8 1.9 1.6 –25 50 75 Switch Current Limit, RT = 75.0k TEMPERATURE ( °C) –50 80 120 125 40 0 0 50 100 –25 25 75 160 60 100 20 140 Switching Frequency Switching Frequency TEMPERATURE( °C) –50 495 500 505 25 75 125 490 485 480 –25 0 50 100 VFB = 0.78V RT PIN BIAS CURRENT (µA) 0 0 0.5 1.5 2.0 2.5 20 35 3.0 1.0 10 30 5 25 15 TA = 25°C RT PIN RESISTANCE (kΩ) 10 0.1 1 100 3505 G24 TA = 25°C VSW 5V/DIV IL 0.5A/DIV 0 VOUT 20mV/DIV VIN = 12V VOUT = 3.3V IOUT = 0.5A L = 10 µH COUT = 10µF RT = 75.0k 1 µs/DIV 3505 G18 VSW 5V/DIV IL 0.5A/DIV 0 VOUT 20mV/DIV 1 µs/DIV 3505 F26 VIN = 12V VOUT = 3.3V IOUT = 50mA L = 10 µH COUT = 10µF RT = 75.0k DUTY CYCLE (%) 1.2 1.4 1.6 1.8 1.3 1.5 1.7 20 40 60 80 3505 G20 100 0 30 50 70 90 10 TA = 25°C |
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