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LT1303 数据表(PDF) 2 Page - Linear Technology |
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LT1303 数据表(HTML) 2 Page - Linear Technology |
2 / 12 page 2 LT1303/LT1303-5 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IQ Quiescent Current VSHDN = 0.5V, VSEL = 5V, VSENSE = 5.5V q 120 200 µA VSHDN = 1.8V q 715 µA VIN Input Voltage Range 1.8 1.55 V q 2.0 V Feedback Voltage LT1303 q 1.22 1.24 1.26 V Output Sense Voltage LT1303-5 q 4.8 5.0 5.2 V Comparator Hysteresis LT1303 (Note 1) q 6 12.5 mV Output Hysteresis LT1303-5 (Note 1) q 22 50 mV Feedback Pin Bias Current LT1303, VFB = 1V q 720 nA Oscillator Frequency Current Limit Not Asserted 120 155 185 kHz Oscillator TC 0.2 %/ °C DC Maximum Duty Cycle q 75 86 95 % tON Switch On Time Current Limit Not Asserted 5.6 µs Output Line Regulation 1.8V < VIN < 6V q 0.06 0.15 %/V VCESAT Switch Saturation Voltage ISW = 700mA q 130 200 mV Switch Leakage Current VSW = 5V, Switch Off q 0.1 10 µA Peak Switch Current VIN = 2V q 0.75 1.0 1.25 A VIN = 5V 0.65 0.9 1.15 A LBI Trip Voltage q 1.21 1.24 1.27 V LBI Input Bias Current VLBI = 1V q 720 nA LBO Output Low ILOAD = 100µA q 0.11 0.4 V LBO Leakage Current VLBI = 1.3V, VLBO = 5V q 0.1 5 µA VSHDNH Shutdown Pin High q 1.8 V VSHDNL Shutdown Pin Low 0.5 V ISHDN Shutdown Pin Bias Current VSHDN = 5V q 8.0 20 µA VSHDN = 2V q 3.0 µA VSHDN = 0V q 0.1 1 µA ABSOLUTE MAXIMUM RATINGS VIN Voltage .............................................................. 10V SW1 Voltage ............................................................ 25V Sense Voltage (LT1303-5) ....................................... 20V FB Voltage (LT1303) ................................................ 10V Shutdown Voltage ................................................... 10V LBO Voltage ............................................................. 10V LBI Voltage .............................................................. 10V Maximum Power Dissipation ............................. 500mW Operating Temperature Range ..................... 0 °C to 70°C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C PACKAGE/ORDER INFORMATION TA = 25°C, VIN = 2.0V, unless otherwise noted. ELECTRICAL C C HARA TERISTICS Note 1: Hysteresis specified is DC. Output ripple may be higher if output capacitance is insufficient or capacitor ESR is excessive. The q denotes specifications which apply over the 0 °C to 70°C operating temperature range. ORDER PART NUMBER LT1303CN8 LT1303CS8 LT1303CN8-5 LT1303CS8-5 S8 PART MARKING 1303 13035 Consult factory for Industrial and Military grade parts. 1 2 3 4 8 7 6 5 TOP VIEW GND LBO SHDN FB (SENSE)* PGND SW VIN LBI N8 PACKAGE 8-LEAD PDIP S8 PACKAGE 8-LEAD PLASTIC SO *FIXED VERSION TJMAX = 100°C, θJA = 130°C/W (N8) TJMAX = 100°C, θJA = 150°C/W (S8) |
类似零件编号 - LT1303 |
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类似说明 - LT1303 |
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