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LM5035CSQX/NOPB Datasheet(PDF) 6 Page - Texas Instruments |
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LM5035CSQX/NOPB Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 35 page  LM5035C SNVS631C – JANUARY 2010 – REVISED MARCH 2013 www.ti.com Electrical Characteristics (continued) Specifications with standard typeface are for TJ = 25°C, and those with boldface type apply over full Operating Junction Temperature range. VVIN = 48V, VVCC = 10V externally applied, RRT = 15.0 kΩ, RDLY = 27.4kΩ, VUVLO = 3V, VOVP = 0V unless otherwise stated. See (1) and (2). Symbol Parameter Conditions Min Typ Max Units Under-voltage Standby Enable UVLO voltage rising 0.4 V Threshold Over-Voltage Protection (OVP pin) VOVP Over-Voltage threshold 1.212 1.25 1.288 V IOVP Hysteresis current OVP pin sourcing 19 23 27 µA Current Sense Input (CS Pin) VCS Current Limit Threshold 0.228 0.25 0.272 V CS delay to output CS from zero to 1V. Time for HO and LO to 80 ns fall to 90% of VCC. Output load = 0 pF. Leading edge blanking time at CS 50 ns CS sink impedance (clocked) Internal FET sink impedance 32 60 Ω Current Limit Restart (RES Pin) VRES RES Threshold 2.4 2.5 2.6 V Charge source current VRES = 1.5V 16 22 28 µA Discharge sink current VRES = 1V 8 12 16 µA Soft-Start (SS Pin) ISS Charging current in normal operation VSS = 0 80 110 140 µA Charging current during a hiccup VSS = 0 0.6 1.2 1.8 µA mode restart Oscillator (RT Pin) FSW1 Frequency 1 (at HO, half oscillator RRT = 15 kΩ, TJ = 25°C 185 200 215 kHz frequency) RRT = 15 kΩ, TJ = -40°C to 125°C 180 220 FSW2 Frequency 2 (at HO, half oscillator RRT = 5.49 kΩ 430 500 570 kHz frequency) DC level 2 V Input Sync threshold 2.5 3 3.4 V PWM Controller (Comp Pin) Delay to output 80 ns VPWM-OS SS to RAMP offset 0.7 1 1.2 V Minimum duty cycle SS = 0V 0 % Small signal impedance ICOMP = 600µA, COMP current to PWM 6200 Ω voltage Main Output Drivers (HO and LO Pins) Output high voltage IOUT = 50mA, VHB - VHO, VVCC - VLO 0.5 0.25 V Output low voltage IOUT = 100 mA 0.2 0.5 V Rise time CLOAD = 1 nF 15 ns Fall time CLOAD = 1 nF 13 ns Peak source current VHO,LO = 0V, VVCC = 10V 1.25 A Peak sink current VHO,LO = 10V, VVCC = 10V 2 A HB Threshold VCC rising 3.8 V 6 Submit Documentation Feedback Copyright © 2010–2013, Texas Instruments Incorporated Product Folder Links: LM5035C |
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