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| LP2980LV Datasheet, PDF (9/14 Pages) National Semiconductor (TI) – Micropower SOT, 50 mA Low-Voltage Low-Dropout Regulator For Applications With Output Voltages < 2V | |||
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Typical Performance Characteristics Unless otherwise specified: TA = 25ËC, 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
Output Reverse Leakage vs
Temperature
10109130
Turn-On Waveform
Turn-Off Waveform
10109131
10109116
ON/OFF Pin current vs VON/OFF
10109117
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).
10109132
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
9
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