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LD3985J28R Folha de dados(PDF) 8 Page - STMicroelectronics |
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LD3985J28R Folha de dados(HTML) 8 Page - STMicroelectronics |
8 / 22 page Electrical characteristics LD3985xx 8/22 Note: 1 For VO(NOM) < 2 V, VI = 2.5 V 2For VO(NOM)= 1.25 V, VI = 2.5 V 3 Dropout voltage is the input-to-output voltage difference at which the output voltage is 100mV below its nominal value. This specification does not apply for input voltages below 2.5V. 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 5 Typical thermal protection hysteresis is 20 °C 6 The minimum capacitor value is 1 µF, anyway the LD3985 is still stable if the compensation capacitor has a 30 % tolerance in all temperature range. IO(PK) Peak output current VO ≥ VO(NOM) - 5% 300 550 mA VINH Inhibit input logic low VI = 2.5V to 6V, TJ= -40 to 125°C 0.4 V Inhibit input logic high 1.2 IINH Inhibit input current VINH = 0.4V, VI = 6V ±1 nA eN Output noise voltage BW = 10 Hz to 100 kHz, CO = 1µF 30 µVRMS tON Turn On time (Note 4)CBYP = 10 nF 100 250 µs TSHDN Thermal shutdown Note 5 160 °C CO Output capacitor Capacitance (Note 6) 1 22 µF ESR 5 5000 m Ω Table 5. Electrical characteristics for LD3985 (continued) (TJ = 25 °C, VI = VO(NOM) +0.5 V, CI = 1 µF, CBYP = 10 nF, IO = 1 mA, VINH = 1.4 V, unless otherwise specified) Symbol Parameter Test conditions Min. Typ. Max. Unit |
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Descrição semelhante - LD3985J28R |
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