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LM3017 датащи(PDF) 4 Page - Texas Instruments |
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LM3017 датащи(HTML) 4 Page - Texas Instruments |
4 / 33 page LM3017 SNOSC66C – MARCH 2012 – REVISED MARCH 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Limits in standard type are for TJ = 25°C only; limits apply over the junction temperature (TJ) range of –40°C to +125°C. Minimum and Maximum limits are specified through test, design or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the following conditions apply: VIN = 12V. SYMBOLS PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT Supply Current in Boost Mode - No IQ-boost EN/MODE = 1.6V, FB = 1.4V 5.2 9 mA switching IQ-SD Supply Current in Shutdown Mode EN/MODE pin = 0.4V 0.025 1 µA Supply Current in Pass-Through IQ-pass EN/MODE = 2.6V, FB = 1.4V 1.4 2.3 mA mode Ven-pass Pass-Through Mode Threshold (3) Rising 2.19 2.4 2.56 V Vmode-hyst Mode change hysteresis, falling(3) Falling 65 107 165 V Ven-shutdown Shut-down Mode Threshold (3) Falling 0.2 0.4 0.59 V Ven-boost Boost Mode Enable Window(3) Rising 0.65 1.22 1.6 V Ien EN/MODE pin bias current (4) EN/MODE = 1.6V ±1.0 µA Cycle-by-Cycle Current Limit EN/MODE = 1.6V VSENSE 142 170 182 mV Threshold during boost mode FB = 50V Short Circuit Current Limit ΔVSC EN/MODE = 1.6 V, FB = 0 V 18 30 42 mV Threshold during boost mode Internal Ramp Compensation VSL 90 mV Voltage Input Current Limit Threshold VLIM1 Voltage in Pass-Through mode EN/MODE = 2.6V 70 85 95 mV during TLIM1 (3) Input Current Limit Threshold ΔVLIM2 Voltage in Pass-Through mode EN/MODE = 2.6V 14.5 18 21 mV during TLIM2 (3) TLIM1 Curent Limit Time at TLIM1 (3) 900 µs TLIM2 Current Limit Time at TLIM2 (3) 3.6 ms TSC Current Limit Time at TSC (3) 900 µs Rising threshold measured at FB pin with Upper Output-Over Voltage respect to FB pin, 40 mV Protection Threshold VCOMP = 1.45V VOVP Falling threshold measured at FB pin with Lower Output-Over Voltage respect to FB pin, 26 mv Protection Threshold VCOMP = 1.45V VGS-on On State Drive voltage at VG pin (5) VIN = 5V, ISEN = 5V, IG = 0A 3.8 4.9 V Vin = 5V, ISEN = VIN – 200mV VGS-off Off State Drive voltage at VG pin(6) 5 mV IG = 0A VIN = 5V, ISEN = 5V IG Maximum Drive current at VG pin 20 µA VG = VIN Gm Error Amplifier Transconductance VCOM = 1.4 V, ICOMP = ±50µA 340 522 900 µA/V Error Amplifier Open Loop Voltage AVOL VCOM = 1.2 V to 1.8V, ICOMP = 0A 190 313 450 V/V Gain Error Amplifier Open Loop Output RO 600 k Ω Resistance (7) SOURCING: 27 66 115 µA VCOMP = 1.4V, VFB = 1.1V Error Amplifier Output Current IEAO Swings SINKING: 49 68 125 µA VCOMP = 1.4V, VFB = 1.4V (3) See sections on operational modes and short circuit protection. (4) The bias current flowing through this pin is compensated and can flow either into or out-of this pin. (5) This is the gate-to-source voltage drive of Q2, when the controller turns on this FET. (6) This voltage is measured from the VG pin to AGND, when the controller fully turns off Q2. (7) This parameter is calculated from the error amplified Gm and AVOL, and is not tested. 4 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links :LM3017 |
Аналогичный номер детали - LM3017_13 |
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Аналогичное описание - LM3017_13 |
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