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LP2980LV Datasheet(PDF) 9 Page - National Semiconductor (TI) |
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LP2980LV Datasheet(HTML) 9 Page - National Semiconductor (TI) |
9 / 14 page Typical Performance Characteristics Unless otherwise specified: T A = 25˚C, COUT = 4.7 µF, CIN = 1µF, ON/OFF pin tied to VIN,VIN =VO(NOM) + 1V, VOUT(NOM) = 1.8V. (Continued) Ripple Rejection Input to Output Leakage vs Temperature 10109112 10109130 Output Reverse Leakage vs Temperature Turn-On Waveform 10109131 10109116 Turn-Off Waveform ON/OFF Pin current vs V ON/OFF 10109117 10109132 Application Hints INPUT CAPACITOR An input capacitor whose capacitance is ≥ 1 µF is required between the LP2980 input pin and ground (the amount of capacitance may be increased without limit). The input capacitor must be located a distance of not more than 1 cm away from the input pin and returned to a clean analog ground. Any good quality ceramic, Tantalum, or film capacitor may be used at the input. IMPORTANT: Tantalum capacitors may suffer catastrophic failure due to surge current when connected to a low- impedance source of power (like a battery or very large www.national.com 9 |
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