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TL1454A Folha de dados(PDF) 9 Page - Texas Instruments |
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TL1454A Folha de dados(HTML) 9 Page - Texas Instruments |
9 / 25 page TL1454A, TL1454AY DUALCHANNEL PULSEWIDTHMODULATION (PWM) CONTROL CIRCUIT SLVS423 A− MAY 2002 − REVISED SEPTEMBER 2002 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range, VCC = 6 V, fosc = 500 kHz (unless otherwise noted) (continued) oscillator PARAMETER TEST CONDITIONS TL1454A UNIT PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fosc Frequency CT = 120 pF, RT = 10 kΩ 500 kHz Standard deviation of frequency 50 kHz Frequency change with voltage VCC = 3.6 V to 20 V, TA = 25°C 10 kHz Frequency change with temperature TA = TA(min) to 25°C −2 ±30 kHz Frequency change with temperature TA = 25°C to 85°C −10 ±30 kHz Maximum ramp voltage 1.8 V Minimum ramp voltage 1.1 V dead-time control (DTC) PARAMETER TEST CONDITIONS TL1454A UNIT PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIT Input threshold voltage Duty cycle = 0% 0.98 1.1 1.22 V VIT Input threshold voltage Duty cycle = 100% 0.38 0.5 0.62 V VI(latched) Latched-mode input voltage 1.2 V IIB Common-mode input bias current DTC1, IN1+ ≈ 1.2 V 4 µA Latched-mode (source) current TA = 25°C − 100 µA error-amplifier PARAMETER TEST CONDITIONS TL1454A UNIT PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIO Input offset voltage 6 mV IIO Input offset current VO = 1.25 V, VIC = 1.25 V 100 nA IIB Input bias current VO = 1.25 V, VIC = 1.25 V − 160 − 500 nA VICR Input voltage range VCC = 3.6 V to 20 V − 0.2 to 1.40 V AV Open-loop voltage gain RFB = 200 kΩ 70 80 dB Unity-gain bandwidth 3 MHz CMRR Common-mode rejection ratio 60 80 dB VOM(max) Positive output voltage swing 2.3 2.43 V VOM(min) Negative output voltage swing 0.63 0.8 V IO+ Output sink current VID = − 0.1 V, VO = 1.20 V 0.1 0.5 mA IO− Output source current VID = 0.1 V, VO = 1.80 V −45 −70 µA output PARAMETER TEST CONDITIONS TL1454A UNIT PARAMETER TEST CONDITIONS MIN TYP MAX UNIT IO = − 8 mA VCC−2 4.5 VOH High-level output voltage IO = −8 mA @ VCC = >10 V VCC−2.3 V V VOH High-level output voltage IO = − 40 mA VCC−2 4.4 V IO = 40 mA @ VCC = >10 V VCC−2.3 V VOL Low-level output voltage IO = 8 mA 0.1 0.4 V VOL Low-level output voltage IO = 40 mA 1.8 2.5 V trv Output voltage rise time CL = 2000 pF, TA = 25°C 220 ns tfv Output voltage fall time CL = 2000 pF, TA = 25°C 220 ns |
Nº de peça semelhante - TL1454A_14 |
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Descrição semelhante - TL1454A_14 |
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