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TPS40000DGQR Datasheet(PDF) 3 Page - Texas Instruments |
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TPS40000DGQR Datasheet(HTML) 3 Page - Texas Instruments |
3 / 28 page TPS40000, TPS40001 TPS40002, TPS40003 TPS40004, TPS40005 SLUS507D − JANUARY 2002 − REVISED NOVEMBER 2005 3 www.ti.com ELECTRICAL CHARACTERISTICS over recommended operating temperature range, TA = −40_C to 85_C, VDD = 5.0 V, all parameters measured at zero power dissipation (unless otherwise noted) input supply PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VDD Input voltage range 2.25 5.5 V VHGATE High-side gate voltage VBOOT − VSW 5.5 V Shutdown current SS/SD = 0 V, Outputs off 0.25 0.45 IDD Quiescent current FB = 0.8 V 1.4 2.0 mA IDD Switching current No load at HDRV/LDRV 1.5 4.0 mA UVLO Minimum on-voltage 1.95 2.05 2.15 V Hysteresis 80 140 200 mV oscillator PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fOSC Oscillator frequency TPS40000 TPS40001 TPS40004 2.25 V ≤ VDD ≤ 5.00 V 250 300 350 kHz fOSC Oscillator frequency TPS40002 TPS40003 TPS40005 2.25 V ≤ VDD ≤ 5.00 V 500 600 700 kHz VRAMP Ramp voltage VPEAK − VVALLEY 0.80 0.93 1.07 V Ramp valley voltage 0.24 0.31 0.41 V PWM PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Maximum duty cycle(2) TPS40000 TPS40001 TPS40004 FB = 0 V, VDD = 3.3 V 87% 94% 97% Maximum duty cycle(2) TPS40002 TPS40003 TPS40005 FB = 0 V, VDD = 3.3 V 83% 93% 97% Minimum duty cycle 0% error amplifier PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VFB FB input voltage Line, Temperature 0.689 0.700 0.711 V VFB FB input voltage TA = 25°C 0.693 0.700 0.707 V FB input bias current 30 130 nA VOH High-level output voltage FB = 0 V, IOH = 0.5 mA 2.0 2.5 V VOL Low-level output voltage FB =VDD, IOL = 0.5 mA 0.08 0.15 V IOH Output source current COMP = 0.7 V, FB = GND 2 6 mA IOL Output sink current COMP = 0.7 V, FB = VDD 3 8 mA GBW Gain bandwidth(1) 5 10 MHz AOL Open loop gain 55 85 dB (1) Ensured by design. Not production tested. (2) At VDD input voltage of 2.25 V, derate the maximum duty cycle by 3%. |
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