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TL3577 数据表(PDF) 4 Page - Texas Instruments |
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TL3577 数据表(HTML) 4 Page - Texas Instruments |
4 / 23 page www.ti.com Electrical Characteristics DVOUT DVIN DVOUT DILOAD DVREF DVIN DISWITCH DVCOMP TL3577 100-kHz CURRENT-MODE SIMPLE STEP-UP/FLYBACK SWITCHING REGULATOR SLVS633 – OCTOBER 2006 V IN = 5 V, VFEEDBACK = VREF, ISWITCH = 0 (unless otherwise noted) TL3577-ADJ PARAMETER TEST CONDITIONS TJ UNIT MIN TYP MAX 25 °C 11.6 12 12.4 VIN = 5 V to 10 V, VOUT Output voltage V ILOAD = 100 mA to 800 mA, See Figure 1 Full range 11.4 12.6 25 °C 20 50 VIN = 3.5 V to 10 V, ILOAD = 200 mA, Line regulation mV See Figure 1 Full range 100 25 °C 20 50 Load regulation ILOAD = 100 mA to 800 mA, See Figure 1 mV Full range 100 η Efficiency ILOAD = 800 mA, See Figure 1 25 °C 80 % 25 °C 7.5 10 VFEEDBACK = 1.5 V (SWITCH Off) Full range 14 ICC Input supply current mA 25 °C 45 70 ISWITCH = 2 A, VCOMP = 2 V (maximum duty cycle) Full range 85 25 °C 2.7 2.85 VUV Input supply undervoltage lockout ISWITCH = 100 mA V Full range 2.95 25 °C 85 100 115 fO Oscillator frequency Measured at SWITCH, ISWITCH = 100 mA kHz Full range 80 120 25 °C 1.214 1.23 1.246 Measured at FEEDBACK, VREF Reference voltage V VIN = 3 V to 40 V, VCOMP = 1 V Full range 1.206 1.254 Reference voltage line regulation VIN = 3 V to 40 V 25 °C 0.5 mV 25 °C 100 300 IB Error amplifier input bias current VCOMP = 1 V nA Full range 800 25 °C 2400 3700 4800 GM Error amplifier transconductance ICOMP = –30 µA to 30 µA, VCOMP = 1 V µmho Full range 1600 5800 25 °C 500 800 AVOL Error amplifier voltage gain VCOMP = 1.1 V to 1.9 V, RCOMP = 1 MΩ(1) V/V Full range 250 25 °C 2.2 2.4 Upper limit, VFEEDBACK = 1 V Full range 2 Error amplifier output swing V 25 °C 0.3 0.4 Lower limit, VFEEDBACK = 1.5 V Full range 0.55 25 °C ±130 ±200 ±300 Error amplifier output current VFEEDBACK = 1 V to 1.5 V, VCOMP = 1 V µA Full range ±90 ±400 25 °C 2.5 5 7.5 ISS Soft-start current VFEEDBACK = 1 V, VCOMP = 0 µA Full range 1.5 9.5 25 °C 88 90 D Maximum duty cyle VCOMP = 1.5 V, ISWITCH = 100 mA % Full range 84 Switch transconductance 25 °C 12.5 A/V 25 °C 10 300 VSWITCH = 65 V, IL Switch leakage current µA VFEEDBACK = 1.5 V (SWITCH off) Full range 600 25 °C 0.5 0.7 ISWITCH = 2 A, VSAT Switch saturation voltage V VCOMP = 2 V (maximum duty cycle) Full range 0.9 25 °C 3.7 4.3 5.3 NPN switch current limit VCOMP = 2 V A Full range 3 6 (1) A 1-M Ω resistor is connected to the compensation pin (which is the error amplifier output) to ensure accuracy in measuring A VOL. In actual applications, this load resistance should be ≥10 MΩ, resulting in A VOL that is typically twice the specified minimum limit. 4 Submit Documentation Feedback |
类似零件编号 - TL3577 |
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类似说明 - TL3577 |
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