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LM2575HVS-12 Scheda tecnica(PDF) 7 Page - Texas Instruments |
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LM2575HVS-12 Scheda tecnica(HTML) 7 Page - Texas Instruments |
7 / 43 page LM1575, LM2575-N, LM2575HV www.ti.com SNVS106E – MAY 1999 – REVISED APRIL 2013 ELECTRICAL CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise specified, VIN = 12V for the 3.3V, 5V, and Adjustable version, VIN = 25V for the 12V version, and VIN = 30V for the 15V version. ILOAD = 200 mA. LM2575-XX LM1575-XX Units LM2575HV-XX Symbol Parameter Conditions Typ (Limits) Limit (1) Limit (2) DEVICE PARAMETERS Ib Feedback Bias Current VOUT = 5V (Adjustable Version Only) 50 100/500 100/500 nA fO Oscillator Frequency See (3) 52 kHz 47/43 47/42 kHz(Min) 58/62 58/63 kHz(Max) VSAT Saturation Voltage IOUT = 1A (4) 0.9 V 1.2/1.4 1.2/1.4 V(Max) DC Max Duty Cycle (ON) See (5) 98 % 93 93 %(Min) ICL Current Limit Peak Current (4)(3) 2.2 A 1.7/1.3 1.7/1.3 A(Min) 3.0/3.2 3.0/3.2 A(Max) IL Output Leakage Output = 0V 2 2 mA(Max) Current Output = −1V 7.5 mA Output = −1V (6)(7) 30 30 mA(Max) IQ Quiescent Current See (6) 5 mA 10/12 10 mA(Max) ISTBY Standby Quiescent ON /OFF Pin = 5V (OFF) 50 μA Current 200/500 200 μA(Max) θJA Thermal Resistance TO-220 Package, Junction to Ambient (8) 65 θJA TO-220 Package, Junction to Ambient (9) 45 θJC TO-220 Package, Junction to Case 2 θJA CDIP Package, Junction to Ambient (10) 85 °C/W θJA SOIC Package, Junction to Ambient (10) 100 θJA DDPAK/TO-263 Package, Junction to Ambient 37 (11) (1) All limits specified at room temperature (standard type face) and at temperature extremes (bold type face). All limits are used to calculate Average Outgoing Quality Level, and all are 100% production tested. (2) All limits specified at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods. (3) The oscillator frequency reduces to approximately 18 kHz in the event of an output short or an overload which causes the regulated output voltage to drop approximately 40% from the nominal output voltage. This self protection feature lowers the average power dissipation of the IC by lowering the minimum duty cycle from 5% down to approximately 2%. (4) Output (pin 2) sourcing current. No diode, inductor or capacitor connected to output pin. (5) Feedback (pin 4) removed from output and connected to 0V. (6) Feedback (pin 4) removed from output and connected to +12V for the Adjustable, 3.3V, and 5V versions, and +25V for the 12V and 15V versions, to force the output transistor OFF. (7) VIN = 40V (60V for the high voltage version). (8) Junction to ambient thermal resistance (no external heat sink) for the 5 lead TO-220 package mounted vertically, with ½ inch leads in a socket, or on a PC board with minimum copper area. (9) Junction to ambient thermal resistance (no external heat sink) for the 5 lead TO-220 package mounted vertically, with ½ inch leads soldered to a PC board containing approximately 4 square inches of copper area surrounding the leads. (10) Junction to ambient thermal resistance with approximately 1 square inch of pc board copper surrounding the leads. Additional copper area will lower thermal resistance further. See thermal model in Switchers made Simple software. (11) If the DDPAK/TO-263 package is used, the thermal resistance can be reduced by increasing the PC board copper area thermally connected to the package: Using 0.5 square inches of copper area, θJA is 50°C/W; with 1 square inch of copper area, θJA is 37°C/W; and with 1.6 or more square inches of copper area, θJA is 32°C/W. Copyright © 1999–2013, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: LM1575 LM2575-N LM2575HV |
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