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| TL1451A |
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TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range, VCC = 6 V, f = 200 kHz (unless otherwise noted) reference section PARAMETER TEST CONDITIONS TL1451AC UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT Output voltage (pin 16) IO = 1 mA 2.4 2.5 2.6 V Output voltage change with temperature TA = –20°C to 25°C – 0.1% ±1% Output voltage change with temperature TA = 25°C to 85°C – 0.2% ±1% Input voltage regulation VCC = 3.6 V to 40 V 2 12.5 mV Output voltage regulation IO = 0.1 mA to 1 mA 1 7.5 mV Short-circuit output current VO = 0 3 10 30 mA † All typical values are at TA = 25°C. undervoltage lockout section PARAMETER TEST CONDITIONS TL1451AC UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT Upper threshold voltage (VCC) 2.72 V Lower threshold voltage (VCC) IO( f) =0 1mA TA =25°C 2.6 V Hysteresis (VCC) IO(ref) = 0.1 mA, TA = 25°C 80 120 mV Reset threshold voltage (VCC) 1.5 1.9 V † All typical values are at TA = 25°C. short-circuit protection control section PARAMETER TEST CONDITIONS TL1451AC UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT Input threshold voltage (SCP) TA = 25°C 0.65 0.7 0.75 V Standby voltage (SCP) No pullup 140 185 230 mV Latched input voltage (SCP) No pullup 60 120 mV Input (source) current VI = 0.7 V, TA = 25°C –10 –15 –20 µA Comparator threshold voltage (FEEDBACK) 1.18 V † All typical values are at TA = 25°C. oscillator section PARAMETER TEST CONDITIONS TL1451C UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT Frequency CT = 330 pF, RT = 10 kΩ 200 kHz Standard deviation of frequency CT = 330 pF, RT = 10 kΩ 10% Frequency change with voltage VCC = 3.6 V to 40 V 1% Frequency change with temperature TA = –20°C to 25°C – 0.4% ±2% Frequency change with temperature TA = 25°C to 85°C – 0.2% ±2% † All typical values are at TA = 25°C. |
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