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LP38501TS-ADJ Datasheet(PDF) 5 Page - National Semiconductor (TI) |
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LP38501TS-ADJ Datasheet(HTML) 5 Page - National Semiconductor (TI) |
5 / 16 page Symbol Parameter Conditions Min Typ Max Units AC Parameters PSRR Ripple Rejection V IN = 3.0V, IOUT = 3A f = 120Hz — 58 — dB V IN = 3.0V, IOUT = 3A f = 1 kHz — 56 — ρ n(l/f) Output Noise Density f = 120Hz, C OUT = 10 µF CER — 1.0 — µV/ √Hz e n Output Noise Voltage BW = 100Hz – 100kHz C OUT = 10 µF CER — 100 — µV (rms) Thermal Characteristics T SD Thermal Shutdown T J rising — 170 — °C ΔT SD Thermal Shutdown Hysteresis TJ falling from TSD — 10 — θ J-A Thermal Resistance Junction to Ambient TO-263, TO-263 THIN(Note 8) 1 sq. in. copper 37 °C/W θ J-C Thermal Resistance Junction to Case TO-263, TO-263 THIN — 5 — Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but does not guarantee specific performance limits. For guaranteed specifications and conditions, see the Electrical Characteristics. Note 2: The human body model is a 100pF capacitor discharged through a 1.5k Ω resistor into each pin. Note 3: Operating junction temperature must be evaluated, and derated as needed, based on ambient temperature (T A), power dissipation (PD), maximum allowable operating junction temperature (T J(MAX)), and package thermal resistance (θJA). See Application Information. Note 4: Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the voltage at the input. Note 5: Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in the load current at the output. Note 6: The line and load regulation specification contains only the typical number. However, the limits for line and load regulation are included in the output voltage tolerance specification. Note 7: Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. For any output voltage less than 2.5V, the minimum V IN operating voltage is the limiting factor. Note 8: The value of θ JA for the TO-263 (TS) package and TO-263 THIN (TJ) package can range from approximately 30 to 60°C/W depending on the amount of PCB copper dedicated to heat transfer (See Application Information). 5 www.national.com |
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