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LM5116MHX Datasheet(PDF) 6 Page - Texas Instruments |
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LM5116MHX Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 37 page  LM5116 SNVS499G – FEBRUARY 2007 – REVISED MARCH 2013 www.ti.com Electrical Characteristics (continued) Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature range of -40°C to +125°C and are provided for reference only. Unless otherwise specified, the following conditions apply: VIN = 48V, VCC = 7.4V, VCCX = 0V, EN = 5V, RT = 16 kΩ, no load on LO and HO. Symbol Parameter Conditions Min Typ Max Units PWM Comparators tHO(OFF) Forced HO Off-time 320 450 580 ns tON(min) Minimum HO On-time VIN = 80V, CRAMP = 50 pF 100 ns Oscillator fSW1 Frequency 1 RT = 16 k Ω 180 200 220 kHz fSW2 Frequency 2 RT = 5 k Ω 480 535 590 kHz RT output voltage 1.191 1.215 1.239 V RT sync positive threshold 3.0 3.5 4.0 V Current Limit Cycle-by-cycle Sense Voltage Threshold VCS(TH) VCCX = 0V, RAMP = 0V 94 110 126 mV (CSG - CS) Cycle-by-cycle Sense Voltage Threshold VCS(THX) VCCX = 5V, RAMP = 0V 105 122 139 mV (CSG - CS) CS Bias Current CS = 100V -1 1 µA CS Bias Current CS = 0V 90 125 µA CSG Bias Current CSG = 0V 90 125 µA RT = 16 kΩ, (200 kHz), (256 Current Limit Fault Timer 1.28 ms clock cycles) RAMP Generator IR1 RAMP Current 1 VIN = 60V, VOUT=10V 235 285 335 µA IR2 RAMP Current 2 VIN = 10V, VOUT = 10V 21 28 35 µA VOUT Bias Current VOUT = 36V 200 µA RAMP Output Low Voltage VIN = 60V, VOUT = 10V 265 mV Diode Emulation SW Zero Cross Threshold -6 mV DEMB Output Current DEMB = 0V, SS = 1.25V 1.6 2.7 3.8 µA DEMB Output Current DEMB =0V, SS = 2.8V 28 38 48 µA DEMB = 0V, SS = Regulated DEMB Output Current 45 65 85 µA by FB LO Gate Driver VOLL LO Low-state Output Voltage ILO = 100 mA 0.08 0.17 V ILO = -100 mA, VOHL = VCC - VOHL LO High-state Output Voltage 0.25 V VLO LO Rise Time C-load = 1000 pF 18 ns LO Fall Time C-load = 1000 pF 12 ns IOHL Peak LO Source Current VLO = 0V 1.8 A IOLL Peak LO Sink Current VLO = VCC 3.5 A HO Gate Driver VOLH HO Low-state Output Voltage IHO = 100 mA 0.17 0.27 V IHO = -100 mA, VOHH = VHB – VOHH HO High-state Output Voltage 0.45 V VHO HO Rise Time C-load = 1000 pF 19 ns HO High-side Fall Time C-load = 1000 pF 13 ns IOHH Peak HO Source Current VHO = 0V 1 A IOLH Peak HO Sink Current VHO = VCC 2.2 A HB to SW under-voltage 3 V 6 Submit Documentation Feedback Copyright © 2007–2013, Texas Instruments Incorporated Product Folder Links: LM5116 |
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