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LT1521IST-5 Datasheet(PDF) 3 Page - Linear Technology |
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LT1521IST-5 Datasheet(HTML) 3 Page - Linear Technology |
3 / 16 page 3 LT1521/LT1521-3 LT1521-3.3/LT1521-5 PARAMETER CONDITIONS MIN TYP MAX UNITS Regulated Output Voltage LT1521-3 VIN = 3.5V, IOUT = 1mA, TJ = 25°C 2.950 3.000 3.050 V (Note 4) 4V < VIN < 20V, 1mA < IOUT < 300mA q 2.900 3.000 3.100 V LT1521-3.3 VIN = 3.8V, IOUT = 1mA, TJ = 25°C 3.250 3.300 3.350 V 4.3V < VIN < 20V, 1mA < IOUT < 300mA q 3.200 3.300 3.400 V LT1521-5 VIN = 5.5V, IOUT = 1mA, TJ = 25°C 4.925 5.000 5.075 V 6V < VIN < 20V, 1mA < IOUT < 300mA q 4.850 5.000 5.150 V LT1521 (Note 5) VIN = 4.3V, IOUT = 1mA, TJ = 25°C 3.695 3.750 3.805 V 4.8V < VIN < 20V, 1mA < IOUT < 300mA q 3.640 3.750 3.860 V Line Regulation LT1521-3 ∆VIN = 4.5 to 20V, IOUT = 1mA q 1.5 20 mV LT1521-3.3 ∆VIN = 4.8 to 20V, IOUT = 1mA q 1.5 20 mV LT1521-5 ∆VIN = 5.5 to 20V, IOUT = 1mA q 1.5 20 mV LT1521 (Note 5) ∆VIN = 4.3 to 20V, IOUT = 1mA q 1.5 20 mV Load Regulation LT1521-3 ∆ILOAD = 1mA to 300mA, TJ ≤ 25°C– 20 – 30 mV LT1521-3.3 ∆ILOAD = 1mA to 300mA, TJ ≤ 25°C– 20 – 30 mV LT1521-5 ∆ILOAD = 1mA to 300mA, TJ ≤ 25°C– 25 – 45 mV LT1521 (Note 5) ∆ILOAD = 1mA to 300mA, TJ ≤ 25°C– 20 – 30 mV LT1521-3 ∆ILOAD = 1mA to 300mA, TJ >25°C– 20 – 55 mV LT1521-3.3 ∆ILOAD = 1mA to 300mA, TJ > 25°C– 20 – 55 mV LT1521-5 ∆ILOAD = 1mA to 300mA, TJ > 25°C– 25 – 75 mV LT1521 (Note 5) ∆ILOAD = 1mA to 300mA, TJ > 25°C– 20 – 55 mV Dropout Voltage (Note 6) ILOAD = 1mA, TJ = 25°C 130 170 mV ILOAD = 1mA q 250 mV ILOAD = 50mA, TJ = 25°C 290 350 mV ILOAD = 50mA q 450 mV ILOAD = 100mA, TJ = 25°C 350 420 mV ILOAD = 100mA q 550 mV ILOAD = 150mA, TJ = 25°C 400 470 mV ILOAD = 150mA q 600 mV ILOAD = 300mA, TJ = 25°C 500 600 mV ILOAD = 300mA q 750 mV Ground Pin Current (Note 7) ILOAD = 0mA q 12 20 µA ILOAD = 1mA q 65 100 µA ILOAD = 10mA q 300 450 µA ILOAD = 50mA q 0.8 1.5 mA ILOAD = 100mA q 1.4 2.5 mA ILOAD = 150mA q 2.2 4.0 mA ILOAD = 300mA q 6.5 12.0 mA Adjust Pin Bias Current (Notes 5, 8) TJ = 25°C 50 100 nA Shutdown Threshold VOUT = Off to On q 1.20 2.80 V VOUT = On to Off q 0.25 0.75 V Shutdown Pin Current (Note 9) VSHDN = 0V q 2.0 5.0 µA Quiescent Current in Shutdown (Note 10) VIN = VOUT (NOMINAL) + 1V, VSHDN = 0V q 612 µA Ripple Rejection VIN – VOUT = 1V(Avg), VRIPPLE = 0.5VP–P,50 58 dB fRIPPLE = 120Hz, ILOAD = 150mA Current Limit VIN – VOUT = 7V, TJ = 25°C 400 800 mA VIN = VOUT (NOMINAL) + 1.5V, ∆VOUT = – 0.1V q 320 400 mA ELECTRICAL CHARACTERISTICS |
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