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LP38843T-1.2 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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LP38843T-1.2 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
4 / 11 page Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range −65˚C to +150˚C Lead Temp. (Soldering, 5 seconds) 260˚C ESD Rating Human Body Model (Note 3) Machine Model (Note 9) 2kV 200V Power Dissipation (Note 2) Internally Limited V IN Supply Voltage (Survival) −0.3V to +6V V BIAS Supply Voltage (Survival) −0.3V to +7V Shutdown Input Voltage (Survival) −0.3V to +7V I OUT (Survival) Internally Limited Output Voltage (Survival) −0.3V to +6V Junction Temperature −40˚C to +150˚C Operating Ratings V IN Supply Voltage (V OUT +VDO) to 5.5V Shutdown Input Voltage 0 to +5.5V I OUT 3A Operating Junction Temperature Range −40˚C to +125˚C V BIAS Supply Voltage 4.5V to 5.5V V OUT 0.8V to 1.5V Electrical Characteristics Limits in standard typeface are for T J = 25˚C, and limits in boldface type apply over the full operating temperature range. Unless otherwise specified: V IN =VO(NOM) + 1V, VBIAS = 4.5V, IL = 10 mA, CIN = 10 µF CER, C OUT = 22 µF CER, CBIAS = 1 µF CER, VS/D =VBIAS. Min/Max limits are guaranteed through testing, statistical correlation, or design. Symbol Parameter Conditions MIN TYP (Note 4) MAX Units V O Output Voltage Tolerance 10 mA < I L < 3A V O(NOM) + 1V ≤ V IN ≤ 5.5V 4.5V ≤ V BIAS ≤ 5.5V 0.788 0.776 0.8 0.812 0.824 V 1.182 1.164 1.2 1.218 1.236 1.478 1.455 1.5 1.523 1.545 ∆V O/ ∆V IN Output Voltage Line Regulation (Note 6) V O(NOM) + 1V ≤ V IN ≤ 5.5V 0.01 %/V ∆V O/ ∆I L Output Voltage Load Regulation (Note 7) 10 mA < I L < 3A 0.1 0.4 0.6 %/A V DO Dropout Voltage (Note 8) I L =3A 210 270 500 mV I Q(VIN) Quiescent Current Drawn from V IN Supply 10 mA < I L < 3A 30 35 40 mA V S/D ≤ 0.3V 0.06 1 30 µA I Q(VBIAS) Quiescent Current Drawn from V BIAS Supply 10 mA < I L < 3A 2 4 6 mA V S/D ≤ 0.3V 0.03 1 30 µA I SC Short-Circuit Current V OUT =0V 8 A Shutdown Input V SDT Output Turn-off Threshold Output = ON 0.7 1.3 V Output = OFF 0.3 0.7 Td (OFF) Turn-OFF Delay R LOAD XCOUT << Td (OFF) 20 µs Td (ON) Turn-ON Delay R LOAD XCOUT << Td (ON) 15 I S/D S/D Input Current V S/D =1.3V 1 µA V S/D ≤ 0.3V −1 θ J-A Junction to Ambient Thermal Resistance TO-220, No Heatsink 65 ˚C/W TO-263, 1 sq.in Copper 35 www.national.com 4 |
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