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SI786LG Datasheet(PDF) 3 Page - Vishay Siliconix |
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SI786LG Datasheet(HTML) 3 Page - Vishay Siliconix |
3 / 14 page Si786 Vishay Siliconix Document Number: 70189 S-40807—Rev. J, 26-Apr-04 www.vishay.com 3 SPECIFICATIONS Limitse Specific Test Conditions V+ = 15 V, IVL = IREF = 0 mA, SHDN = ON3 = ON5 = 5 V Other Digital Input Levels 0 V or 5 V, TA = TMIN to TMAX Parameter Unit Maxa Typb Mina Specific Test Conditions V+ = 15 V, IVL = IREF = 0 mA, SHDN = ON3 = ON5 = 5 V Other Digital Input Levels 0 V or 5 V, TA = TMIN to TMAX Comparators D1 D2 Trip Voltage Falling Edge Hysteresis = 1% 1.61 1.69 V D1, D2 Trip Voltage Falling Edge, Hysteresis = 1% Si786DG/DRG/DSG 1.60 1.69 V D1, D2 Input Current D1 = D2 = 0 V, 5 V "100 nA Q1, Q2 Source Current VH = 15 V VOUT = 2 5 V 12 20 30 mA Q1, Q2 Sink Current VH = 15 V, VOUT = 2.5 V 200 500 1000 mA Q1, Q2 Output High Voltage ISOURCE = 5 mA, VH = 3 V VH - 0.5 V Q1, Q2 Output Low Voltage ISINK = 20 mA, VH = 3 V 0.4 V Quiescent VH Current VH = 18 V, D1 = D2 = 5 V, No External Load 4 10 mA Oscillator and Inputs/Outputs SYNC = 3 3 V 270 300 330 Oscillator Frequency SYNC = 3.3 V Si786DG/DRG/DSG 260 300 330 kHz Oscillator Frequency SYNC = 0 V 5 V 170 200 230 kHz SYNC = 0 V, 5 V Si786DG/DRG/DSG 165 200 230 SYNC High Pulse Width 200 SYNC Low Pulse Width 200 ns SYNC Rise/Fall Time Not Tested 200 Oscillator SYNC Range 240 350 kHz Maximum Duty Cycle SYNC = 3.3 V 89 92 % Maximum Duty Cycle SYNC = 0 V, 5 V 92 95 % Input Low Voltage SHDN, ON3, ON5 SYNC 0.8 Input High Voltage SHDN, ON3, ON5 2.4 V Input High Voltage SYNC VL - 0.5 Input Current SHDN, ON3, ON5 VIN = 0 V, 5 V "1 mA DL3/DL5 Sink/Source Current VOUT = 2 V 1 A DH3/DH5 Sink/Source Current BST3 - LX3 = BST5 - LX5 = 4.5 V, VOUT = 2 V 1 A DL3/DL5 On-Resistance High or Low 7 DH3/DH5 On-Resistance High or Low BST3 - LX3 = BST5 - LX5 = 4.5 V 7 W Notes a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum. b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. c. The main switching outputs track the reference voltage. Loading the reference reduces the main outputs slightly according to the closed-loop gain (AVCL) and the reference voltage load-regulation error. AVCL for the 3.3-V supply is unity gain. AVCL for the 5-V supply is 1.54. d. Since the reference uses VL as its supply, its V+ line regulation error is insignificant. e. Limits are for all temperature grades unless otherwise noted. |
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