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TPS61061DRBRG4 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS61061DRBRG4 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 22 page  www.ti.com TYPICAL CHARACTERISTICS TPS61060 TPS61061 TPS61062 SLVS538 – NOVEMBER 2004 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT FEEDBACK FB IFB Feedback input bias current VFB = 500 mV 1 1.5 uA VFB Feedback regulation voltage ILED = GND, after start-up 485 500 515 mV VFB Feedback regulation voltage ILED = High, after start-up 240 250 260 mV POWER SWITCH SYNCHRONOUS RECTIFIER AND CURRENT LIMIT (SW) rDS(ON) P-channel MOSFET on-resistance VO = 10 V, Isw = 10 mA 2.5 3.7 Ω N-channel MOSFET on-resistance VIN = VGS = 3.6 V, Isw = 100 mA 0.6 0.9 Ω RDS(ON) N-channel MOSFET on-resistance VIN = VGS = 2.7 V, Isw = 100 mA 0.7 1.0 Ω Iswleak Switch leakage current VIN = VSW=6.0 V, VOUT = GND, 0.1 2 µA EN=GND ISW N-Channel MOSFET current limit VO = 10 V 325 400 475 mA OSCILLATOR fs Switching frequency 0.8 1.0 1.2 MHz OUTPUT Vovp Output overvoltage protection VO rising; TPS61060 14 14.5 16 V Vovp Output overvoltage protection VO rising; TPS61061 18 18.5 19.8 V Vovp Output overvoltage protection VO rising; TPS61062 22.2 23.5 25 V Vovp Output overvoltage protection hysteresis TPS61060/61/62, VO falling 0.7 V Vo Output voltage threshold for short-circuit VO falling VIN–0.7 V detection Vo Output voltage threshold for short-circuit VO rising VIN–0.3 V detection Start-up, EN = low to high, OUT = GND VIN = 6 V 180 Ipre Pre-charge current and short circuit current mA VIN = 3.6 V 95 VIN = 2.7 V 65 D Maximum duty cycle 95% Table of Graphs FIGURE η Efficiency vs LED current; 2 LEDs, ILED = high 2 vs LED current; 3 LEDs, ILED = low 3 vs LED current; 3 LEDs, ILED = high 4 vs LED current; 4 LEDs, ILED = low 5 vs LED current; 4 LEDs, ILED = high 6 vs LED current; 5 LEDs, ILED = high 7 PWM dimming 8 Digital brightness control Feedback voltage vs ILED program- 9 ming step LED current vs PWM duty cycle 10 Soft-start operation 11 Short-circuit protection 12 Overvoltage protection 13 Input voltage ripple 14 5 |
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Similar Description - TPS61061DRBRG4 |
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