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LM2590HV-AQ Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM2590HV-AQ Datasheet(HTML) 3 Page - National Semiconductor (TI) |
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3 / 22 page  All Output Voltage Versions Electrical Characteristics Specifications with standard type face are for T J = 25˚C, and those with boldface type apply over full Operating Tempera- ture Range. Unless otherwise specified, V IN = 12V for the 3.3V, 5V, and Adjustable version. ILOAD = 500 mA Symbol Parameter Conditions LM2590HV-XXX-AQ Units Min Typ Max (Note 5) (Note 4) (Note 5) DEVICE PARAMETERS f O Oscillator Frequency (Note 7) 127 110 150 173 173 kHz kHz V SAT Saturation Voltage I OUT = 1A (Note 8) (Note 9) 0.95 1.2 1.3 V V DC Max Duty Cycle (ON) (Note 9) 100 % Min Duty Cycle (OFF) (Note 10) 0 % I CLIM Switch current Limit Peak Current, (Note 8) (Note 9) 1.3 1.2 1.9 2.8 3.0 A A I L Output Leakage Current Output = 0V (Note 8) (Note10) Note 11) 50 µA Output = −1V (Note 8) (Note10) Note 11) 5 30 mA I Q Operating Quiescent Current SD /SS Pin Open (Note 10) 510 mA I STBY Standby Quiescent Current SD /SS pin = 0V (Note 11) 90 200 250 µA µA θ JC Thermal Resistance TO220 or TO263 Package, Junction to Case 2 ˚C/W θ JA TO220 Package, Junction to Ambient (Note 12) 50 ˚C/W θ JA TO263 Package, Junction to Ambient (Note 13) 50 ˚C/W θ JA TO263 Package, Junction to Ambient (Note 14) 30 ˚C/W θ JA TO263 Package, Junction to Ambient (Note 15) 20 ˚C/W SHUTDOWN/SOFT-START CONTROL Test Circuit of Figure 1 V SD Shutdown Threshold Voltage Shutdown Mode, I STBY < 250µA 0.6 1.3 2.0 V V OUT = 1% of Normal Output Voltage 1.8 V V SS Soft-start Voltage V OUT = 20% of Nominal Output Voltage 2 V V OUT = 100% of Nominal Output Voltage 3 V I SD Shutdown Current V SHUTDOWN = 0.5V 510 µA I SS Soft-start Current V Soft-start = 2.5V 1.5 5 µA www.national.com 3 |
Similar Part No. - LM2590HV-AQ |
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