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LP2951CMM-3.0 Datasheet(PDF) 6 Page - Texas Instruments |
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LP2951CMM-3.0 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 43 page  LP2950-N, LP2951-N SNVS764N – JANUARY 2000 – REVISED MAY 2013 www.ti.com ELECTRICAL CHARACTERISTICS (1) (continued) LP2950AC-XX LP2950C-XX LP2951 LP2951AC-XX LP2951C-XX Parameter Conditions(1) Units Typ Tested Typ Tested Design Typ Tested Design Limit(2)(3) Limit(2) Limit(4) Limit(2) Limit(4) Error Comparator Output Leakage VOH = 30V 0.01 1 0.01 1 0.01 1 μA max Current 2 2 2 μA max Output Low Voltage Vin = (VONOM − 0.5)V 150 250 150 250 150 250 mV IOL = 400μA max 400 400 400 mV max Upper Threshold See(13) 60 40 60 40 60 40 mV min Voltage 25 25 25 mV min Lower Threshold See(13) 75 95 75 95 75 95 mV Voltage max 140 140 140 mV max Hysteresis See(13) 15 15 15 mV Shutdown Input Input 1.3 1.3 1.3 V Logic Low (Regulator ON) 0.6 0.7 0.7 V max Voltage High (Regulator OFF) 2.0 2.0 2.0 V min Shutdown Pin Input Vshutdown = 2.4V 30 50 30 50 30 50 μA max Current 100 100 100 μA max Vshutdown = 30V 450 600 450 600 450 600 μA max 750 750 750 μA max Regulator Output See(14) 3 10 3 10 3 10 μA max Current in Shutdown 20 20 20 μA max (13) Comparator thresholds are expressed in terms of a voltage differential at the Feedback terminal below the nominal reference voltage measured at Vin = (VONOM + 1)V. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = VOUT/VREF = (R1 + R2)/R2.For example, at a programmed output voltage of 5V, the Error output is specified to go low when the output drops by 95 mV × 5V/1.235V = 384 mV. Thresholds remain constant as a percent of Vout as Vout is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% ensured. (14) VSHUTDOWN ≥ 2V, VIN ≤ 30V, VOUT = 0, Feedback pin tied to VTAP. 6 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LP2950-N LP2951-N |
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