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TPS61176 датащи(PDF) 5 Page - Texas Instruments |
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TPS61176 датащи(HTML) 5 Page - Texas Instruments |
5 / 34 page TPS61176 www.ti.com SLVSBM5B – DECEMBER 2012 – REVISED AUGUST 2015 6.5 Electrical Characteristics VIN = 3.6 V, PWM/EN = high, IFB current = 20 mA, IFB voltage = 450 mV, TA = –40°C to +85°C, typical values are at TA = 25°C (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT POWER SUPPLY VIN Input voltage range 2.7 6.5 V VIN ramp down 2.4 2.5 VIN_UVLO VIN undervoltage lockout threshold V VIN ramp up 2.65 2.7 VIN_HYS VIN undervoltage lockout hysteresis 250 mV Device enable, switching 1 MHz and no Iq_VIN Operating quiescent current into VIN 3 mA load PWM/EN = low 1 4 ISD Shutdown current µA PWM/EN = low, TA = 25°C 1 2 VLDO VLDO pin output voltage VIN = 3.6 V 3 3.3 3.5 V PWM/EN VH PWM/EN logic high 1.2 V VL PWM/EN logic Low 0.4 V PWM/EN pin internal pull-down RPD 400 800 1600 k Ω resistor tSD PWM/EN logic low width to shutdown PWM/EN from high to low 20 ms CURRENT REGULATION VISET ISET pin voltage PWM/EN logic high 1.02 1.04 1.06 V KISET Current multiplier IISET = 20 μA 1024 IISET = 20 μA, 0°C to 70°C –2% 2% IFBx Current accuracy IISET = 20 µA, –40°C to 85°C –2.3% 2.3% Km (IMAX – IMIN) / (2 x IAVG) IISET = 20 μA 0.65% VIFBx = 10 V, each pin 1.5 5 IIFBx_leak IFBx pin leakage current µA VIFBx = 5 V, each pin 0.5 2 IIFBx_max Current sink max output current IISET = 35 μA, each pin 35 mA TFBx_MINON Current sink minimum on time IISET = 20 μA, each pin 0.5 µs fdim PWM dimming frequency Mode 1 / Mode 3, 0°C to 70°C 20 22 27 kHz BOOST OUTPUT REGULATION VIFBx_min IFBx regulation voltage Measured on VIFB(MIN), IISET = 20 μA 450 mV POWER SWITCH RDS(on) Switch MOSFET on-resistance VIN = 3.6 V 0.25 0.4 Ω ILEAK_SW Switch MOSFET leakage current VSW = 40 V 2 µA OSCILLATOR fSW Oscillator frequency 0.8 1 1.2 MHz Dmax Maximum boost switch duty cycle 93% MODE/FAULT Tested as VIN – VMODE when mode resistor is connected between VIN pin MODE/FAULT pin voltage during VMODE and MODE/FAULT pin; Tested as 0.6 0.9 V mode detection period VMODE when mode resistor is connected between MODE/FAULT pin and GND VMODE = 0.5 V, mode resistor is MODE/FAULT pin pulldown current IMODE_PD connected between VIN pin and 50 80 µA after mode detection MODE/FAULT pin Copyright © 2012–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: TPS61176 |
Аналогичный номер детали - TPS61176_15 |
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Аналогичное описание - TPS61176_15 |
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