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LP3987 数据表(PDF) 4 Page - National Semiconductor (TI) |
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LP3987 数据表(HTML) 4 Page - National Semiconductor (TI) |
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4 / 17 page ![]() Absolute Maximum Ratings (Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V IN −0.3 to 6.5V V EN,VMODE −0.3 to 6.5V V OUT −0.3V to(V IN+ 0.3V) ≤ 6.5 Storage Temperature −65˚C to +150˚C ESD (Note 4) Human Body Model 2KV Machine Model 200V Maximum Power Dissipation (Note 3) θ JA (micro SMD small bump) 255˚C/W Operating Ratings (Notes 1, 2) V IN V OUT+ 200mV to 6V V EN,VMODE 0 to 6.0V Junction Temperature −40˚C to +125˚C Maximum Power Dissipation (Note 3) 392mW at 25˚C Electrical Characteristics Unless otherwise specified: V EN = 1.8V, MODE = 1.8V, VIN =VOUT(nom) + 0.5V, CIN = 1 µF, IOUT = 1mA, COUT = 1 µF. Typical values and limits appearing in standard typeface are for T J = 25˚C. Limits appearing in boldface type apply over the entire junction temperature range for operation, −40˚C to +125˚C. (Note 10) (Note 11) Symbol Parameter Conditions Typ Limit Units Min Max ∆V OUT Output Voltage Tolerance I OUT = 1mA, 25˚C -2 2 %of V OUT(nom) I OUT = 1mA −3 3 Line Regulation Error V IN =(VOUT(nom) + 0.5V) to 6.0V, I OUT =1 mA −0.1 0.1 %/V Load Regulation Error I OUT = 1mA to 150 mA 0.0004 0.002 %/mA Dropout Voltage (Note 6) I OUT = 1mA 0.4 2 mV I OUT = 150mA 60 100 ∆V OUT(SLEEP) Output Voltage difference at MODE = 0V MODE = 0V, (Note 7) -150 +100 mV Transient Response Line Transient Response (Note 5) MODE = 1.8V, I LOAD = 100mA, T RISE =TFALL = 10µS, V IN = 600mV P-P AC Square wave, (Note 8) 21 mVpp Load Transient Response (Note 5) MODE = 1.8V, C OUT = 4.7µF, T RISE =TFALL = 100nS, V IN = 3.1V, 3.6V, 4.2V, (Notes 9, 12) 100 mVpk PSRR Power Supply Rejection Ratio (Note 5) V IN =VOUT(nom) + 1V, MODE = 1.8V, f = <10 kHz, I OUT = 1mA 50 dB V IN =VOUT(nom) + 1V, MODE = 0V, f = <10 kHz, I OUT = 1mA 10 I Q(ON) Quiescent Current MODE = 1.8V, I OUT = 0mA, V IN = 4.2V 85 120 µA MODE = 1.8V, I OUT = 150mA, V IN = 4.2V 160 200 I Q(OFF) Quiescent Current ENABLE = 0V, V IN = 4.2V 1 3 µA I Q(SLEEP) Current in Standby Mode MODE = 0V, I OUT = 50µA, VIN = 4.2V 14 21 µA I SC Short Circuit Current Limit (Note 5) Output Grounded 600 mA www.national.com 4 |
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