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LP3999 Datasheet(PDF) 5 Page - Texas Instruments |
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LP3999 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 19 page  LP3999 www.ti.com SNVS207E – JUNE 2003 – REVISED MAY 2013 Electrical Characteristics (continued) Unless otherwise noted, VEN = 1.5, VIN = VOUT(NOM) + 1.0V, CIN = 1 µF, IOUT = 1 mA, COUT = 1 µF, CBP = 0.01 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) (2) Limit Symbol Parameter Conditions Typical Units Min Max VDO Dropout Voltage IOUT = 1 mA 0.4 2 mV IOUT = 150 mA 60 100 PSRR Power Supply Rejection Ratio(3) f = 1 kHz, IOUT = 1 mA 60 dB f = 10 kHz, IOUT = 1 mA 50 FULL VOUT RANGE ILOAD Load Current See (4) and (3) 0 µA IQ Quiescent Current VEN = 1.5V, IOUT = 0 mA 85 150 VEN = 1.5V, IOUT = 150 mA 140 200 µA VEN = 0.4V 0.003 1.5 ISC Short Circuit Current Limit 450 mA EN Output Noise Voltage(3) BW = 10 Hz to 100 kHz, 10 VIN = 4.2V, No Load µVrms BW = 10 Hz to 100 kHz, 30 VIN = 4.2V, 1mA Load TSHUTDOWN Thermal Shutdown Temperature 160 °C Hysteresis 20 ENABLE CONTROL CHARACTERISTICS IEN Maximum Input Current at VEN VEN = 0.0V and VIN = 6.0V 0.001 µA Input VIL Low Input Threshold 0.4 V VIH High Input Threshold 0.9 V TIMING CHARACTERISTICS TON Turn On Time (5) To 95% Level (6) 140 µs (4) The device maintains the regulated output voltage without load. (5) This electrical specification is ensured by design. (6) Time from VEN = 0.9V to VOUT = 95% (VOUT(NOM)) Recommended Output Capacitor Limit Symbol Parameter Conditions Typical Units Min Max COUT Output Capacitor Capacitance (1) 1.0 0.70 µF ESR 5 500 m Ω (1) The capacitor tolerance should be 30% or better over temperature. Recommended capacitor type is X7R however dependant on application X5R,Y5V and Z5U can also be used. Copyright © 2003–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LP3999 |
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