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LP2951CSDX/NOPB 数据表(PDF) 5 Page - Texas Instruments |
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LP2951CSDX/NOPB 数据表(HTML) 5 Page - Texas Instruments |
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5 / 43 page  LP2950-N, LP2951-N www.ti.com SNVS764N – JANUARY 2000 – REVISED MAY 2013 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) Load Regulation(7) 100 μA ≤ IL ≤ 100 mA 0.04 0.1 0.04 0.1 0.1 0.2 % max 0.3 0.2 0.3 % max Dropout Voltage(9) IL = 100 μA 80 80 80 mV max 50 150 50 150 50 150 mV max IL = 100 mA 450 450 450 mV max 380 600 380 600 380 600 mV max Ground Current IL = 100 μA 75 120 75 120 75 120 μA max 140 140 140 μA max IL = 100 mA 8 12 8 12 8 12 mA max 14 14 14 mA max Dropout Ground Vin = (VONOM − 0.5)V 110 170 110 170 110 170 μA max Current IL = 100 μA 200 200 200 μA max Current Limit Vout = 0 160 200 160 200 160 200 mA max 220 220 220 mA max Thermal Regulation See(10) 0.05 0.2 0.05 0.2 0.05 0.2 %/W max Output Noise, 10 Hz to CL = 1μF (5V Only) 430 430 430 μV rms 100 kHz CL = 200 μF 160 160 160 μV rms CL = 3.3 μF 100 100 100 μV rms (Bypass = 0.01 μF Pins 7 to 1 (LP2951-N) 8-pin Versions Only LP2951 LP2951AC-XX LP2951C-XX Reference Voltage 1.23 1.25 1.23 1.25 1.23 1.26 V max 5 5 5 1.26 1.26 1.27 V max 1.22 1.22 1.21 V min 1.2 1.2 1.2 V min Reference Voltage See(11) 1.27 1.27 1.285 V max 1.19 1.19 1.185 V min Feedback Pin Bias 20 40 20 40 20 40 nA max Current 60 60 60 nA max Reference Voltage See(12) 20 20 50 ppm/°C Temperature Coefficient Feedback Pin Bias 0.1 0.1 0.1 nA/°C Current Temperature Coefficient (9) Dropout Voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V differential. At very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into account. (10) Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a 50 mA load pulse at VIN = 30V (1.25W pulse) for T = 10ms. (11) VREF ≤ VOUT ≤ (VIN − 1V), 2.3V ≤ VIN ≤ 30V, 100 μA ≤ IL ≤ 100 mA, TJ ≤ TJMAX. (12) Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. Copyright © 2000–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LP2950-N LP2951-N |
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