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LT1501IS8-5 Datasheet(PDF) 6 Page - Linear Technology |
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LT1501IS8-5 Datasheet(HTML) 6 Page - Linear Technology |
6 / 16 page 6 LT1500/LT1501 TYPICAL PERFORMANCE CHARACTERISTICS Peak-to-Peak Inductor Ripple Current AVERAGE SWITCH CURRENT 0 220 200 180 160 140 120 100 80 0.3 0.5 LT1500/01 • TPC07 0.1 0.2 0.4 0.6 0.7 VIN = 3.3V VOUT = 5V L = 50 µH NOTE THAT RIPPLE CURRENT INCREASES WITH SMALLER INDUCTORS DUE TO PROPAGATION DELAY IN THE CURRENT COMPARATOR Switch Saturation Voltage SWITCH CURRENT (A) 0 1.0 0.8 0.6 0.4 0.2 0 0.8 LT1500/01 • TPC06 0.2 0.4 0.6 1.0 TJ = 25°C INPUT VOLTAGE (V) 0 120 100 80 60 40 20 0 2 46 8 LT1500/01 • TPC01 10 12 TJ = 25°C LOAD CURRENT IS REDUCED UNTIL Burst Mode OPERATION STARTS VOUT = 3.3V VOUT = 5V VOUT = 12V Burst Mode Threshold SINK CURRENT (mA) 0 0.6 0.5 0.4 0.3 0.2 0.1 0 1 23 4 LT1500/01 • TPC02 56 TJ = 25°C VLBI ≤ 1.2V Low-Battery Output Saturation Voltage Quiescent Input Supply Current INPUT VOLTAGE (V) 0 15 25 LT1500/01 • TPC04 510 20 400 350 300 250 200 150 100 50 0 TJ = 25°C VFB OR VOUT HELD 5% HIGH, SO THAT Burst Mode OPERATION IS ACTIVATED. DOES NOT INCLUDE OUTPUT DIVIDER CURRENT INPUT VOLTAGE (V) 0 20 16 12 8 4 0 20 LT1500/01 • TPC03 5 10 15 25 TJ = 25°C VSHDN = 0V Input Current in Shutdown Shutdown Input Current vs Feedback Pin Voltage FEEDBACK PIN VOLTAGE (V) 0 140 120 100 80 60 40 20 0 0.6 1.0 LT1500/01 • TPC05 0.2 0.4 0.8 1.2 1.4 TJ = 25°C VIN = 5V ADJUSTABLE PARTS ONLY. FIXED VOLTAGE PARTS DO NOT SHOW SHUTDOWN CURRENT INCREASE WITH FEEDBACK VOLTAGE |
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