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LT1431IZ-PBF Datasheet(PDF) 3 Page - Linear Technology |
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LT1431IZ-PBF Datasheet(HTML) 3 Page - Linear Technology |
3 / 14 page LT1431 1431fd elecTrical characTerisTics 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: VKA is the cathode voltage of the LT1431CZ/IZ and corresponds to V+ of the LT1431CN8/IN8/CS8/IS8. IK is the cathode current of the The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. IK = 10mA unless otherwise specified (Note 2) SYMBOL PARAMETER CONDITIONS LT1431I, LT1431M LT1431C UNITS MIN TYP MAX MIN TYP MAX VREF Reference Voltage VKA = 5V, IK = 2mA, (Note 3) l 2.490 2.465 2.500 2.510 2.535 2.490 2.480 2.500 2.510 2.520 V V ∆VREF/∆T Reference Drift VKA = 5V, IK = 2mA l 50 30 ppm/°C ∆VREF/∆VKA Voltage Ratio, Reference to Cathode (Open-Loop Gain) IK = 2mA, VKA = 3V to 36V l 0.2 0.5 0.2 0.5 mV/V |IREF| Reference Input Current VKA = 5V, TA = 25°C l 0.2 1.0 1.5 0.2 1.0 1.2 µA µA IMIN Minimum Operating Current VKA = VREF to 36V 0.6 1.0 0.6 1.0 mA |IOFF| Off-State Cathode Current VKA = 36V, VREF = 0V l 1 15 1 2 µA µA |ILEAK| Off-State Collector Leakage Current VCOLL = 36V, V+ = 5V, VREF = 2.4V l 1 5 1 2 µA µA |ZKA| Dynamic Impedance VKA = VREF, IK = 1mA to 100mA, f ≤ 1kHz 0.2 0.2 Ω ILIM Collector Current Limit VKA = VREF + 50mV l 80 360 100 260 mA 5V Reference Output Internal Divider Used, IK = 2mA 4.950 5.000 5.050 4.950 5.000 5.050 V LT1431CZ/IZ and corresponds to I(V+) + ICOLLECTOR of the LT1431CN8/ IN8/CS8/IS8. Note 3: The LT1431 has bias current cancellation which is effective only for VKA ≥ 3V. A slight (≈2mV) shift in reference voltage occurs when VKA drops below 3V. For this reason, these tests are not performed at VKA = VREF. |
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