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LM2590HV Datasheet(PDF) 6 Page - Texas Instruments |
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LM2590HV Datasheet(HTML) 6 Page - Texas Instruments |
6 / 35 page ![]() 6 LM2590HV SNVS084C – DECEMBER 2001 – REVISED JULY 2016 www.ti.com Product Folder Links: LM2590HV Submit Documentation Feedback Copyright © 2001–2016, Texas Instruments Incorporated (1) All limits specified at room temperature and at temperature extremes. All room temperature limits are 100% production tested. All limits at temperature extremes are specified via 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. 6.5 Electrical Characteristics TJ = 25°C, VIN = 12 V for the 3.3-V, 5-V, and adjustable version, and ILOAD = 500 mA (unless otherwise noted) PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT Ib Feedback bias current Adjustable version only, VFB = 1.3 V TJ = 25°C 10 50 nA TJ = –40°C to 125°C 100 fO Oscillator frequency(3) TJ = 25°C 127 150 173 kHz TJ = –40°C to 125°C 110 173 VSAT Saturation voltage IOUT = 1 A(4)(5) 1.2 0.95 1.3 V DC Max duty cycle (ON)(5) 100% Min duty cycle (OFF)(6) 0% ICLIM Switch current limit Peak current(4)(5) TJ = 25°C 1.3 1.9 2.8 A TJ = –40°C to 125°C 1.2 3 IL Output leakage current VIN = 60 V (4) (6) Output = 0 V 50 µA Output = −1 V 5 30 mA IQ Operating quiescent current SD/SS pin open(6) 5 10 mA ISTBY Standby quiescent current SD/SS pin = 0 V, VIN = 60 V TJ = 25°C 90 200 µA TJ = –40°C to 125°C 250 SHUTDOWN AND SOFT-START CONTROL (see Test Circuits) VSD Shutdown threshold voltage TJ = 25°C 1.3 V TJ = –40°C to 125°C Low (shutdown mode) 0.6 High (soft-start mode) 2 VSS Soft-start voltage VOUT = 20% of nominal output voltage 2 V VOUT = 100% of nominal output voltage 3 ISD Shutdown current VSHUTDOWN = 0.5 V 5 10 µA ISS Soft-start current VSoft-start = 2.5 V 1.5 5 µA FLAG AND DELAY CONTROL (see Test Circuits) Regulator dropout detector threshold voltage Low (flag ON) 92% 96% 98% VFSAT Flag output saturation and voltage ISINK = 3 mA 0.7 0.3 1 V IFL Flag output leakage current VFLAG = 60 V 0.3 µA Delay pin threshold voltage Low (flag ON) 1.21 1.25 mV High (flag OFF) and VOUT regulated 1.25 1.29 Delay pin source current VDELAY = 0.5 V 3 6 mV Delay pin saturation Low (flag ON) TJ = 25°C 70 350 mV TJ = –40°C to 125°C 400 |
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