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UCC28230 Datasheet(PDF) 4 Page - Texas Instruments |
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UCC28230 Datasheet(HTML) 4 Page - Texas Instruments |
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www.ti.com ELECTRICAL CHARACTERISTICS (1) UCC28230 UCC28231 SLUS814 – FEBRUARY 2008 over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITION MIN TYP MAX UNITS Bias Currents IDD(off) Startup current VDD is 200 mV below UVLO falling threshold 150 238 µA IDD Operating supply current 1.5 4 mA Under Voltage Lockout Start threshold 5.9 6.3 6.8 Minimum operating voltage after start 5.3 5.7 6.1 V Hysteresis 0.55 0.6 0.75 Soft Start (SS Pin) ISS Charge current VSS = 0 V 20 25 30 µA VSS_STD Shutdown/restart/reset threshold 0.3 0.55 0.8 VSS_FP Soft-start first pulse threshold 0.85 V VSS_PU Pull up threshold 3.3 3.5 3.7 VSS_CL Clamp voltage 4.2 4.5 4.7 OFF Time Programming TOFF Off time between O1_D and O2_D 33 40 47 OS = 12.7 k Ω, CS = 0.3 V, OST = 1 V Dead time between O1_D and O1_DIN, TDT 10 O2_D and O2_DIN TOFFR Off time between O1_D and O2_D 33 40 47 ns OS = 12.7 k Ω, CS = 0 V, OST = VREF Dead time between O1_D and O1_DIN, TDTF 10 O2_D and O2_DIN ΔTOFFR Off time matching 2 IHYST Hysteresis current source 10 µA VCS(off) Off time control threshold OS = 12.7 k Ω, OST = 1 V, CS rising 0.1 V TOFF(ma Maximum off time at low CS OS = 12.7 k Ω, OST = 1 V, CS = 0 V 165 235 ns x) Switching Frequency at O1_D and O2_D Outputs Starting frequency VSS = VSS(FP) + 100 mV 92 100 108 FSW(nom Nominal frequency VSS = VSS(PU) + 100 mV 92 100 108 ) kHz FSW(max Maximum frequency VSS = 1.8 V 450 500 550 ) VREF Output Voltage 0 ≤ IR ≤ 10 mA, 7 V ≤ VDD ≤ 17 V, VREF5 Output voltage (UCC28230) 4.925 5 5.075 -40 °C ≤ T J ≤ 125°C V 0 ≤ IR ≤ 10 mA, 7 V ≤ VDD ≤ 17 V, VREF3 Output voltage (UCC28231) 3.25 3.3 3.35 -40 °C ≤ T J ≤ 125°C ΔVREF/ Line regulation 7 V ≤ VDD ≤ 17 V, IR = 1 mA 0.3 1 mV/V ΔVDD ΔVREF/ Load regulation 0 ≤ IR ≤ 10 mA 1.3 3 mV/mA ΔIREF ISCC Short circuit current VREF = 0 V -35 -25 -15 mA (1) Typical values for TA + 25°C. 4 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): UCC28230 UCC28231 |
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