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3507 Datasheet(PDF) 4 Page - Linear Technology |
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3507 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 28 page  LT3507 4 3507f ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN1, VIN2, VIN3 = 12V, VBOOST1, VBOOST2, VBOOST3 = 17V, unless otherwise noted (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS Load Regulation IDRIVE from 0.1mA to 10mA 0.005 %/mA DRIVE Output Current Limit l 10 15 22.5 mA Dropout Voltage, VIN1 to DRIVE IDRIVE = 10mA 1.7 2.0 V Dropout Voltage, BIAS to DRIVE IDRIVE = 10mA 0.5 0.8 V Over/Undervoltage Lockout Undervoltage Lockout Threshold 1.15 1.20 1.25 V Overvoltage Lockout Threhold 1.15 1.20 1.25 V Undervoltage Lockout Hysteresis Current V(UVLO) < 1.2V 7 10 13 μA Overvoltage Lockout Hysteresis Current V(OVLO) > 1.2V –7 –10 –13 μA Input Bias Current (OVLO and UVLO) –100 –200 nA Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LT3507E is guaranteed to meet performance specifications from 0°C to 125°C junction temperature. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The LT3507I is guaranteed to meet performance specifications from –40°C to 125°C junction temperature. The LT3507H is guaranteed over the full –40°C to 150°C operating junction temperature range. High junction temperatures degrade operating lifetimes. Operating lifetime is derated at junction temperatures greater than 125°C. Note 3: Current limit is guaranteed by design and/or correlation to static test. Slope compensation reduces current limit at higher duty cycles. Note 4: This is the minimum voltage across the boost capacitor needed to guarantee full saturation of the internal power switch. Note 5: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed the maximum operating range when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. |
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