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LP3992 Datasheet(PDF) 4 Page - Texas Instruments |
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LP3992 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 18 page  LP3992 SNVS192B – OCTOBER 2002 – REVISED FEBRUARY 2013 www.ti.com Electrical Characteristics Unless otherwise noted, VSD = 1.15, VIN = VOUT + 1.0V, CIN = 1 µF, IOUT = 1 mA, COUT = 1 µF. Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over the full temperature range for operation, −40 to +125°C. (1) Limit Symbol Parameter Conditions Typ Units Min Max VIN Input Voltage 1.9 5.2 V ΔVOUT Output Voltage Tolerance Over full line and load regulation. -90 +90 mV Line Regulation Error VIN = (VOUT(NOM) + 1.0V) to 5.2V, -0.27 +0.27 %/V IOUT = 1mA Load Regulation Error IOUT = 1mA to 30mA 100 220 µV/mA ILOAD Load Current See (2) and (3) 0 µA IQ Quiescent Current VSD = 1.15V, IOUT = 0mA 26 50 VSD = 1.15V, IOUT = 30mA 29 50 µA VSD = 0.4V 0.003 1.5 ISC Short Circuit Current Limit See (4) 90 mA PSRR Power Supply Rejection Ratio f = 1kHz, IOUT = 30mA 40 dB f = 20kHz, IOUT = 30mA 30 EEN Output noise Voltage (3) BW = 10Hz to 1000kHz, 300 µVRMS VIN = 4.2V TSHUTDOWN Thermal Shutdown Temperature 160 °C Thermal Shutdown Hysteresis 20 Enable Control Characteristics ISD Maximum Input Current at SD VEN = 0.0V and VIN = 5.2V 0.001 µA Input VIL Low Input Threshold VIN = 1.8V to 5.2V 0.4 V VIH High Input Threshold VIN = 1.8 to 5.2V 1.15 V Timing Characteristics TON1 Turn On Time (3) 50 to 85% of VOUT(NOM) (5) 15 µS TON2 To 95% Level (6) 40 TOFF1 Turn Off Time (3) 85 to 50% of VOUT(NOM) (7) 15 µS TOFF2 95 to 5% Level (8) 40 Transient Line Transient Response | δVOUT| Trise = Tfall = 10µS (3) 60 Response mV Load Transient Response | δVOUT| Trise = Tfall = 1µS 60 IOUT = 100µA to 5mA (3) (1) All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production at TJ = 25°C or correlated using Statistical Quality Control methods. Operation over the temperature specification is guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control. (2) The device maintains the regulated output voltage without the load. (3) This electrical specification is guaranteed by design. (4) Short circuit current is measured on the input supply line at the point when the short circuit condition reduces the output voltage to 95% of its nominal value. (5) Time for VOUT to rise from 50 to 85% of VOUT(nom). (Figure 2) (6) Time from VSD = 1.15V to VOUT = 95%(VOUT(nom)). (Figure 2) (7) Time for VOUT to fall from 85 to 50% of VOUT(nom). (Figure 2) (8) Time from VSD = 0.4V to VOUT = 5%(VOUT(nom). (Figure 2) Output Capacitor, Recommended Specifications Limit Symbol Parameter Conditions Typ Units Min Max Co Output Capacitor Capacitance(1) 1.0 µF ESR 5 500 m Ω (1) Capacitor types recommended are X7R, Y5V, and Z5U. X7R tolerance is quoted as 15% over temperature. 4 Submit Documentation Feedback Copyright © 2002–2013, Texas Instruments Incorporated Product Folder Links: LP3992 |
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