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LT1507CN8 Datasheet(PDF) 2 Page - Linear Technology |
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LT1507CN8 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 20 page  2 LT1507 Input Voltage ........................................................... 16V Boost Pin Voltage .................................................... 25V Shutdown Pin Voltage ............................................... 7V FB Pin Voltage (Adjustable Part) ............................. 3.5V FB Pin Current (Adjustable Part) ............................. 1mA Sense Voltage (Fixed 3.3V Part) ................................ 5V Sync Pin Voltage ....................................................... 7V Operating Ambient Temperature Range LT1507C .................................................. 0 °C to 70°C LT1507I .............................................. – 40 °C to 85°C Max Operating Junction Temperature ................... 125 °C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION TJMAX = 125°C, θJA = 80°C/W TO 120°C/ W (N) TJMAX = 125°C, θJA = 120°C/W TO 170°C/ W (S) DEPENDING ON PC BOARD LAYOUT 1 2 3 4 8 7 6 5 TOP VIEW VC FB/SENSE GND SYNC BOOST VIN VSW SHDN N8 PACKAGE 8-LEAD PDIP S8 PACKAGE 8-LEAD PLASTIC SO Consult factory for Military grade parts. ORDER PART NUMBER LT1507CN8 LT1507CN8-3.3 LT1507CS8 LT1507CS8-3.3 LT1507IN8 LT1507IN8-3.3 LT1507IS8 LT1507IS8-3.3 S8 PART MARKING ELECTRICAL CHARACTERISTICS TJ = 25°C, VIN = 5V, VC = 1.5V, boost open, switch open unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS Reference Voltage (Adjustable) 2.39 2.42 2.45 V All Conditions q 2.36 2.48 V Sense Voltage (3.3V) 3.25 3.3 3.35 V All Conditions q 3.23 3.37 V Sense Pin Resistance q 4.0 6.6 9.5 k Ω Reference Voltage Line Regulation 4.3V ≤ VIN ≤ 15V q 0.01 0.03 %/V FB Input Bias Current q 0.5 2 µA Error Amplifier Voltage Gain (Note 8) (Note 1) 150 400 Error Amplifier Transconductance (Note 8) ∆I(VC) = ±10µA 1500 2000 2700 µmho q 1100 3000 µmho VC Pin to Switch Current Transconductance 2 A/V Error Amplifier Source Current VFB = 2.1V or VSENSE = 2.9V q 150 225 320 µA Error Amplifier Sink Current VFB = 2.7V or VSENSE = 3.7V 2 mA VC Pin Switching Threshold Duty Cycle = 0 0.9 V VC Pin High Clamp VFB = 2.1V or VSENSE = 2.9V 2.1 V Switch Current Limit VC Open, VFB = 2.1V or VSENSE = 2.9V DC ≤ 50% q 1.50 2 3 A VIN ≥ 5V, VBOOST = VIN + 5V DC = 80% q 1.35 3 A Switch On Resistance (Note 6) ISW = 1.5A, VBOOST = VIN + 5V 0.3 0.4 Ω q 0.5 Ω Maximum Switch Duty Cycle VFB = 2.1V or VSENSE = 2.9V 90 93 % q 86 93 % 1507I 1507I3 1507 15073 |
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