Datenblatt-Suchmaschine für elektronische Bauteile |
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LM25119 Datenblatt(PDF) 7 Page - Texas Instruments |
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LM25119 Datenblatt(HTML) 7 Page - Texas Instruments |
7 / 39 page 7 LM25119, LM25119-Q1 www.ti.com SNVS680H – AUGUST 2010 – REVISED MAY 2016 Product Folder Links: LM25119 Submit Documentation Feedback Copyright © 2010–2016, Texas Instruments Incorporated Electrical Characteristics (continued) Typical values correspond to TJ = 25°C. Minimum and maximum limits apply over –40°C to 125°C junction temperature range. VIN = 36 V, VCC = 8 V, VCCDIS = 0 V, EN2 = 5 V, RT = 25 kΩ, and no load on LO or HO (unless otherwise noted). PARAMETER TEST CONDITIONS MIN(1) TYP MAX(1) UNIT ERROR AMPLIFIER VREF FB reference voltage Measured at FB pin, FB = COMP 0.788 0.8 0.812 V FB input bias current FB = 0.8 V 1 nA FB disable threshold Interleaved threshold 2.5 V COMP VOH Isource = 3 mA 2.8 V COMP VOL Isink = 3 mA 0.31 V AOL DC gain 80 dB fBW Unity gain bandwidth 3 MHz PWM COMPARATORS tHO(OFF) Forced HO OFF-time 220 320 430 ns tON(min) Minimum HO ON-time CRAMP = 50 pF 100 ns OSCILLATOR fSW1 Frequency 1 RT = 25 kΩ 180 200 220 kHz fSW2 Frequency 2 RT = 10 kΩ 430 480 530 kHz RT output voltage 1.25 V RT sync positive threshold TJ = 25°C 2.5 3.2 4 V Sync pulse minimum width 100 ns CURRENT LIMIT VCS(TH) Cycle-by-cycle sense voltage threshold (CS – CSG) RAMP = 0 106 120 134 mV CS bias current CS = 0 V –70 –95 µA Hiccup mode fault timer 256 Cycles RES IRES Current source 9.7 µA VRES Threshold CRES charging 1.2 1.25 1.3 V DIODE EMULATION VIL DEMB input low threshold 2 1.65 V VIH DEMB input high threshold 2.9 2.6 V DEMB input pulldown resistance 50 k Ω SW zero cross threshold –5 mV LO GATE DRIVER VOLL LO low-state output voltage ILO = 100 mA 0.1 0.18 V VOHL LO high-state output voltage ILO = –100 mA, VOHL = VCC – VLO 0.17 0.26 V LO rise time C-load = 1000 pF 6 ns LO fall time C-load = 1000 pF 5 ns IOHL Peak LO source current VLO = 0 V 2.5 A IOLL Peak LO sink current VLO = VCC 3.3 A HO GATE DRIVER VOLH HO low-state output voltage IHO = 100 mA 0.11 0.19 V VOHH HO high-state output voltage IHO = –100 mA, VOHH = VHB – VHO 0.18 0.27 V HO rise time C-load = 1000 pF 6 ns HO fall time C-load = 1000 pF 5 ns IOHH Peak HO Source current VHO = 0 V, SW = 0, HB = 8 V 2.2 A IOLH Peak HO sink current VHO = VHB = 8 V 3.3 A HB to SW undervoltage 3 V |
Ähnliche Teilenummer - LM25119 |
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Ähnliche Beschreibung - LM25119 |
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