Datenblatt-Suchmaschine für elektronische Bauteile |
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TL3843BD Datenblatt(PDF) 7 Page - Texas Instruments |
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TL3843BD Datenblatt(HTML) 7 Page - Texas Instruments |
7 / 24 page www.ti.com Output Section Electrical Characteristics Undervoltage-Lockout Section Electrical Characteristics Pulse-Width Modulator Section Electrical Characteristics Supply Voltage Electrical Characteristics TL284xB, TL384xB HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS SLVS610B – AUGUST 2006 – REVISED JULY 2007 VCC = 15 V (1), R T = 10 kΩ, CT = 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified) TL284xB TL384xB PARAMETER TEST CONDITIONS UNIT MIN TYP(2) MAX MIN TYP(2) MAX IOH = –20 mA 13 13.5 13 13.5 High-level output voltage V IOH = –200 mA 12 13.5 12 13.5 IOL = 20 mA 0.1 0.4 0.1 0.4 Low-level output voltage V IOL = 200 mA 1.5 2.2 1.5 2.2 Rise time CL = 1 nF, TJ = 25°C 50 150 50 150 ns Fall time CL = 1 nF, TJ = 25°C 50 150 50 150 ns UVLO saturation VCC = 5 V, IOL = 1 mA 0.7 1.2 0.7 1.2 V (1) Adjust VCC above the start threshold before setting it to 15 V. (2) All typical values are at TJ = 25°C. VCC = 15 V (1), R T = 10 kΩ, CT = 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified) TL284xB TL384xB PARAMETER TEST CONDITIONS UNIT MIN TYP(2) MAX MIN TYP(2) MAX TLx842B, TLx844B 15 16 17 14.5 16 17.5 Start threshold voltage V TLx843B, TLx845B 7.8 8.4 9 7.8 8.4 9 TLx842B, TLx844B 9 10 11 8.5 10 11.5 Minimum operating voltage V after start-up TLx843B, TLx845B 7 7.6 8.2 7 7.6 8.2 (1) Adjust VCC above the start threshold before setting it to 15 V. (2) All typical values are at TJ = 25°C. VCC = 15 V (1), R T = 10 kΩ, CT = 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified) TL284xB TL384xB PARAMETER TEST CONDITIONS UNIT MIN TYP(2) MAX MIN TYP(2) MAX TL3842B, TL3843B 94 96 100 94 96 100 Maximum duty cycle % TL3844B, TL3845B 47 48 50 47 48 50 Minimum duty cycle 0 0 % (1) Adjust VCC above the start threshold before setting it to 15 V. (2) All typical values are at TJ = 25°C. VCC = 15 V (1), R T = 10 kΩ, CT = 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified) TL284xB TL384xB PARAMETER TEST CONDITIONS UNIT MIN TYP(2) MAX MIN TYP(2) MAX Start-up current 0.3 0.5 0.3 0.5 mA Operating supply current VFB and ISENSE at 0 V 11 17 11 17 mA Limiting voltage ICC = 25 mA 30 34 30 34 V (1) Adjust VCC above the start threshold before setting it to 15 V. (2) All typical values are at TJ = 25°C. 7 Submit Documentation Feedback |
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