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LM2594HVN-5.0 Fiches technique(PDF) 4 Page - National Semiconductor (TI) |
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LM2594HVN-5.0 Fiches technique(HTML) 4 Page - National Semiconductor (TI) |
4 / 28 page LM2594/LM2594HV-ADJ 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 Symbol Parameter Conditions LM2594/LM2594HV-ADJ Units (Limits) Typ Limit (Note 3) (Note 4) SYSTEM PARAMETERS (Note 5) Test Circuit Figure 1 V FB Feedback Voltage 4.5V ≤ V IN ≤ VINmax, 0.1A ≤ ILOAD ≤ 0.5A 1.230 V V OUT programmed for 3V. Circuit of Figure 1 1.193/1.180 V(min) 1.267/1.280 V(max) η Efficiency V IN = 12V, ILOAD = 0.5A 80 % 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 and VIN = 24V for the 12V ver- sion. I LOAD = 100 mA Symbol Parameter Conditions LM2594/LM2594HV-XX Units (Limits) Typ Limit (Note 3) (Note 4) DEVICE PARAMETERS I b Feedback Bias Current Adjustable Version Only, VFB = 1.3V 10 50/100 nA f O Oscillator Frequency (Note 6) 150 kHz 127/110 kHz(min) 173/173 kHz(max) V SAT Saturation Voltage I OUT = 0.5A (Note 7) (Note 8) 0.9 V 1.1/1.2 V(max) DC Max Duty Cycle (ON) (Note 8) 100 % Min Duty Cycle (OFF) (Note 9) 0 I CL Current Limit Peak Current, (Note 7) (Note 8) 0.8 A 0.65/0.58 A(min) 1.3/1.4 A(max) I L Output Leakage Current (Note 7) (Note 9) (Note 10) Output = 0V 50 µA(max) Output = −1V 2 mA 15 mA(max) I Q Quiescent Current (Note 9) 5 mA 10 mA(max) I STBY Standby Quiescent ON/OFF pin = 5V (OFF) (Note 10) 85 µA Current LM2594 200/250 µA(max) LM2594HV 140 250/300 µA(max) θ JA Thermal Resistance N Package, Junction to Ambient (Note 11) 95 ˚C/W M Package, Junction to Ambient (Note 11) 150 ON/OFF CONTROL Test Circuit Figure 1 ON /OFF Pin Logic Input 1.3 V V IH Threshold Voltage Low (Regulator ON) 0.6 V(max) V IL High (Regulator OFF) 2.0 V(min) I H ON /OFF Pin V LOGIC = 2.5V (Regulator OFF) 5 µA Input Current 15 µA(max) I L V LOGIC = 0.5V (Regulator ON) 0.02 µA 5 µA(max) Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in- tended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. www.national.com 4 |
Numéro de pièce similaire - LM2594HVN-5.0 |
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Description similaire - LM2594HVN-5.0 |
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