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LT1507IS8 Datasheet(PDF) 4 Page - Linear Technology |
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LT1507IS8 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 20 page  4 LT1507 Shutdown Pin Bias Current JUNCTION TEMPERATURE ( °C) –50 2.40 2.36 2.32 0.8 0.4 0 25 75 LT1507 • TPC05 –25 0 50 100 125 STANDBY STARTUP SHUTDOWN Standby and Shutdown Thresholds TYPICAL PERFORMANCE CHARACTERISTICS INPUT VOLTAGE (V) 0 0 5 10 15 20 25 30 369 12 LT1507 • TPC06 15 VSHDN = 0V Shutdown Supply Current Shutdown Supply Current Error Amplifier Transconductance TEMPERATURE ( °C) –50 500 400 300 200 8 4 0 25 75 L11507 • TPC04 –25 0 50 100 125 CURRENT REQUIRED TO FORCE SHUTDOWN (FLOWS OUT OF PIN). AFTER SHUTDOWN, CURRENT DROPS TO A FEW µA AT 2.38V STANDBY THRESHOLD (CURRENT FLOWS OUT OF PIN) JUNCTION TEMPERATURE ( °C) –50 2500 2000 1500 1000 500 0 0 50 75 LT1507 • TPC08 –25 25 100 125 SHUTDOWN VOLTAGE (V) 0 150 125 100 75 50 25 0 0.1 0.2 0.3 0.4 LT1507 • TPC07 0.5 VIN = 10V FREQUENCY (Hz) 3000 2500 2000 1500 1000 500 200 150 100 50 0 –50 100 10k 100k 10M LT1507 • TPC09 1k 1M GAIN PHASE ROUT 200k COUT 12pF VC VFB × 2e –3 ERROR AMPLIFIER EQUIVALENT CIRCUIT RLOAD = 50Ω Error Amplifier Transconductance Minimum Input Voltage with 3.3V Output Switching Frequency FEEDBACK PIN VOLTAGE (V) 0 500 400 300 200 100 0 2.0 LT1507 • TPC10 0.5 1.0 1.5 2.5 SWITCHING FREQUENCY FEEDBACK PIN CURRENT Frequency Foldback JUNCTION TEMPERATURE ( °C) –50 600 550 500 450 400 100 LT1507 • TPC11 –25 0 25 50 75 125 LOAD CURRENT (mA) 1 5.0 5.5 6.0 6.5 10 100 1000 LT1507 • TPC12 4.5 4.0 3.5 3.0 MINIMUM VOLTAGE TO START WITH STANDARD CIRCUIT MINIMUM VOLTAGE TO RUN WITH STANDARD CIRCUIT MINIMUM INPUT VOLTAGE CAN BE REDUCED BY ADDING A SMALL EXTERNAL PNP. SEE APPLICATIONS INFORMATION |
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