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LP2985IM5X-3.8 Datasheet(PDF) 4 Page - Texas Instruments |
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LP2985IM5X-3.8 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 36 page LP2985-N SNVS018V – MARCH 2000 – REVISED JUNE 2013 www.ti.com ELECTRICAL CHARACTERISTICS (1) (continued) Limits in standard typeface are for TJ = 25°C. and limits in boldface type apply over the full operating temperature range. Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 1 mA, CIN = 1 µF, COUT = 4.7 µF, VON/OFF = 2V. LP2985AI-X.X(2) LP2985I-X.X(2) Symbol Parameter Conditions Typ Units Min Max Min Max VIN–VO Dropout Voltage(3) IL = 0 1 3 3 5 5 IL = 1 mA 7 10 10 15 15 IL = 10 mA 40 60 60 mV 90 90 IL = 50 mA 120 150 150 225 225 IL = 150 mA 280 350 350 575 575 IGND Ground Pin Current IL = 0 65 95 95 125 125 IL = 1 mA 75 110 110 170 170 IL = 10 mA 120 220 220 400 400 µA IL = 50 mA 350 600 600 1000 1000 IL = 150 mA 850 1500 1500 2500 2500 VON/OFF < 0.3V 0.01 0.8 0.8 VON/OFF < 0.15V 0.05 2 2 VON/OFF ON/OFF Input High = O/P ON 1.4 1.6 1.6 V Voltage(4) Low = O/P OFF 0.55 0.15 0.15 ION/OFF ON/OFF Input Current VON/OFF = 0 0.01 −2 −2 µA VON/OFF = 5V 5 15 15 en Output Noise BW = 300 Hz to 50 kHz, Voltage (RMS) COUT = 10 µF 30 µV CBYPASS = 10 nF Ripple Rejection f = 1 kHz, CBYPASS = 10 nF 45 dB COUT = 10 µF IO(SC) Short Circuit Current RL = 0 (Steady State) (5) 400 mA IO(PK) Peak Output Current VOUT ≥ Vo(NOM) −5% 350 mA (3) Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a 1V differential. (4) The ON/OFF input must be properly driven to prevent possible misoperation. For details, refer to APPLICATION HINTS. (5) The LP2985-N has foldback current limiting which allows a high peak current when VOUT > 0.5V, and then reduces the maximum output current as VOUT is forced to ground (see TYPICAL PERFORMANCE CHARACTERISTICS curves). 4 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LP2985-N |
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