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LT1521IST-5 Datasheet(PDF) 7 Page - Linear Technology |
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LT1521IST-5 Datasheet(HTML) 7 Page - Linear Technology |
7 / 16 page 7 LT1521/LT1521-3 LT1521-3.3/LT1521-5 TYPICAL PERFORMANCE CHARACTERISTICS Current Limit TEMPERATURE ( °C) –50 0.6 0.5 0.4 0.3 0.2 0.1 0 25 75 LT1521 • TPC28 –25 0 50 100 125 VIN = 7V VOUT = 0V Current Limit Adjust Pin Bias Current TEMPERATURE ( °C) –50 25 LT1521 • TPC25 –25 0 50 200 175 150 125 100 75 50 25 0 75 100 125 Reverse Output Current OUTPUT VOLTAGE (V) 0 50 45 40 35 30 25 20 15 10 5 0 8 LT1521 • TPC26 35 79 4 6 10 TJ = 25°C VIN = 0V CURRENT FLOWS INTO OUTPUT PIN VOUT = VSENSE (LT1521-3/LT1521-3.3 LT1521-5) VOUT = VADJ (LT1521) LT1521 LT1521-3.3 LT1521-3 LT1521-5 2 1 TEMPERATURE ( °C) –50 25 LT1521 • TPC29 –25 0 50 8 7 6 5 4 3 2 1 0 75 100 125 VIN = 0V VOUT = 3V (LT1521-3) VOUT = 3.3V (LT1521-3.3) VOUT = 5V (LT1521-5) VOUT = 3.75V (LT1521) Reverse Output Current Ripple Rejection TEMPERATURE ( °C) –50 66 64 62 60 58 56 54 52 25 75 LT1521 • TPC30 –25 0 50 100 125 VIN = VOUT (NOMINAL) + 1V + 0.5VP-P RIPPLE AT f = 120Hz ILOAD = 150mA INPUT VOLTAGE (V) 0 0.6 0.5 0.4 0.3 0.2 0.1 0 35 LT1521 • TPC27 12 46 7 VOUT = 0V Shutdown Pin Threshold (Off-to-On) TEMPERATURE ( °C) –50 3.0 2.5 2.0 1.5 1.0 0.5 0 25 75 LT1521 • TPC23 –25 0 50 100 125 VSHDN = 0V TEMPERATURE ( °C) –50 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 0 50 75 LT1521 • TPC22 –25 25 100 125 ILOAD = 1mA ILOAD = 300mA Shutdown Pin Current Shutdown Pin Input Current SHUTDOWN PIN VOLTAGE (V) 0 25 20 15 10 5 0 2 4 59 LT1521 • TPC24 13 6 7 8 |
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