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LD3985M25R 데이터시트(PDF) 5 Page - STMicroelectronics |
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LD3985M25R 데이터시트(HTML) 5 Page - STMicroelectronics |
5 / 14 page LD3985 SERIES 5/14 Note 1 – For VO(NOM) < 2V, VI = 2.5V Note 2 – For VO(NOM) = 1.25V, VI = 2.5V Note 3 – Dropout voltage is the input-to-output voltage difference at which the output voltage is 100mV below its nominal value. This speci- fication does not apply for input voltages below 2.5V. Note 4 – Turn-on time is time measured between the enable input just exceeding VINH High Value and the output voltage just reaching 95% of its nominal value Note 5 – Typical thermal protection hysteresis is 20°C Note 6 - The minimum capacitor value is 1µF, anyway the LD3985 is still stable if the compensation capacitor has a 30% tolerance in all temperature range. TYPICAL PERFORMANCE CHARACTERISTICS (Tj = 25°C, VI = VO(NOM) +0.5V, CI = CO = 1µF, CBYP = 10nF, IO = 1mA, VINH = 1.4V, unless otherwise specified) Figure 4: Output Voltage vs Temperature Figure 5: Output Voltage vs Temperature Figure 6: Output Voltage vs Temperature Figure 7: Shutdown Voltage vs Temperature CO Output Capacitor Capacitance (Note 6) 1 22 µF ESR 5 5000 m Ω Symbol Parameter Test Conditions Min. Typ. Max. Unit |
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