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LP3883 Datasheet(PDF) 3 Page - Texas Instruments |
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LP3883 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 19 page LP3883 www.ti.com SNVS223F – NOVEMBER 2002 – REVISED APRIL 2013 ELECTRICAL CHARACTERISTICS Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range. Unless otherwise specified: VIN = VO(NOM) + 1V, VBIAS = 4.5V, IL = 10 mA, CIN = COUT = 4.7 µF, VS/D = VBIAS. Symbol Parameter Conditions Typical(1) MIN(2) MAX(2) Units VO Output Voltage Tolerance 10 mA < IL < 3A 1.198 1.234 VO(NOM) + 1V ≤ VIN ≤ 5.5V 1.216 4.5V ≤ VBIAS ≤ 6V 1.186 1.246 1.478 1.522 1.5 V 1.455 1.545 1.773 1.827 1.8 1.746 1.854 ΔVO/ΔVIN Output Voltage Line Regulation(3) VO(NOM) + 1V ≤ VIN ≤ 5.5V 0.01 %/V ΔVO/ΔIL Output Voltage Load Regulation(4) 10 mA < IL < 3A 0.04 %/A 0.06 VDO Dropout Voltage(5) IL = 3A 270 210 mV 420 IQ(VIN) Quiescent Current Drawn from VIN 10 mA < IL < 3A 7 3 mA Supply 8 VS/D ≤ 0.3V 1 0.03 µA 30 IQ(VBIAS) Quiescent Current Drawn from 10 mA < IL < 3A 2 1 mA VBIAS Supply 3 VS/D ≤ 0.3V 1 0.03 µA 30 ISC Short-Circuit Current VOUT = 0V 6 A Shutdown Input VSDT Output Turn-off Threshold Output = ON 0.7 1.3 V Output = OFF 0.7 0.3 Td (OFF) Turn-OFF Delay RLOAD X COUT << Td (OFF) 20 µs Td (ON) Turn-ON Delay RLOAD X COUT << Td (ON) 15 IS/D S/D Input Current VS/D =1.3V 1 µA VS/D ≤ 0.3V −1 AC Parameters PSRR (VIN) Ripple Rejection for VIN Input VIN = VOUT +1V, f = 120 Hz 80 Voltage VIN = VOUT + 1V, f = 1 kHz 65 dB PSRR (VBIAS) Ripple Rejection for VBIAS Voltage VBIAS = VOUT + 3V, f = 120 Hz 70 VBIAS = VOUT + 3V, f = 1 kHz 65 Output Noise Density f = 120 Hz µV/root −H 1 z en Output Noise Voltage BW = 10 Hz − 100 kHz 150 µV (rms) VOUT = 1.8V BW = 300 Hz − 300 kHz 90 (1) Typical numbers represent the most likely parametric norm for 25°C operation. (2) Limits are ensured through testing, statistical correlation, or design. (3) Output voltage line regulation is defined as the change in output voltage from nominal value resulting from a change in input voltage. (4) Output voltage load regulation is defined as the change in output voltage from nominal value as the load current increases from no load to full load. (5) Dropout voltage is defined as the minimum input to output differential required to maintain the output with 2% of nominal value. Copyright © 2002–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LP3883 |
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