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LM2591HVS-ADJ Folha de dados(PDF) 6 Page - Texas Instruments |
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LM2591HVS-ADJ Folha de dados(HTML) 6 Page - Texas Instruments |
6 / 31 page 6 LM2591HV SNVS074E – MAY 2001 – REVISED MAY 2016 www.ti.com Product Folder Links: LM2591HV Submit Documentation Feedback Copyright © 2001–2016, Texas Instruments Incorporated (1) All limits ensured at room temperature (TJ = 25°C) unless otherwise noted. All room temperature limits are 100% production tested. All limits at temperature extremes are ensured through correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (2) Typical numbers are at 25°C and represent the most likely norm. (3) The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the severity of current overload. (4) No diode, inductor or capacitor connected to output pin. (5) Feedback pin removed from output and connected to 0 V to force the output transistor switch ON. (6) Feedback pin removed from output and connected to 12 V for the 3.3-V, 5-V, and the ADJ. version to force the output transistor switch OFF. (7) VIN = 60 V. 7.8 Electrical Characteristics All Output Voltage Versions Specifications are for TJ = 25°C, ILOAD = 500 mA, and VIN = 12V for the 3.3-V, 5-V, and adjustable versions, unless otherwise noted. PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT DEVICE PARAMETERS Ib Feedback Bias Current Adjustable Version Only, VFB = 1.3 V 10 50 nA TA = –40°C to 125°C 100 fO Oscillator Frequency See (3) 127 150 173 kHz TA = –40°C to 125°C 110 173 VSAT Saturation Voltage IOUT = 1 A (4) (5) 0.95 1.2 V TA = –40°C to 125°C 1.3 DC Max Duty Cycle (ON) See (5)(6) 100% Min Duty Cycle (OFF) 0% ICLIM Switch current Limit Peak Current(4)(5) 1.3 1.9 2.8 A TA = –40°C to 125°C 1.2 3.0 IL Output Leakage Current Output = 0 V 5 50 μA Output = −1 V (4)(6)(7) 5 30 mA IQ Operating Quiescent Current SD/SS Pin Open (6) 5 10 mA ISTBY Standby Quiescent Current SD/SS pin = 0 V (7) 90 200 μA TA = –40°C to 125°C 250 ON/OFF CONTROL – See Test Circuits VIH VIL ON/OFF Pin Logic Input Threshold Voltage Low (Regulator ON) High (Regulator OFF) 1.3 V TA = –40°C to 125°C 2.0 0.6 IH ON/OFF Pin Input Current VLOGIC = 2.5 V (Regulator OFF) 5 15 μA IL VLOGIC = 0.5 V (Regulator ON) 0.02 5 μA |
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