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TPS54061-Q1 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS54061-Q1 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 37 page TPS54061-Q1 www.ti.com SLVSBM7 – MARCH 2013 ELECTRICAL CHARACTERISTICS (1) TEST CONDITIONS: TJ = –40°C to 150°C, VIN = 4.7 To 60 V ( (unless otherwise noted) PARAMETER CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE (VIN PIN) Operating input voltage VIN 4.7 60 V Shutdown supply current EN = 0 V 1.4 µA Iq Operating – Non switching VSENSE = 0.9 V, VIN = 12 V 90 110 µA ENABLE AND UVLO (EN PIN) Rising 1.23 1.4 V Enable threshold Falling 1 1.18 V Enable threshold 50 mV –4.7 µA Input current Enable threshold –50 mV –1.2 µA Hysteresis –3.5 µA Enable high to start switching time 450 µs VIN VIN start voltage VIN rising 4.5 V VOLTAGE REFERENCE TJ = 25°C, VIN = 12 V 0.792 0.8 0.808 Voltage reference V 1 mA < IOUT < Minimum current limit 0.784 0.8 0.816 HIGH-SIDE MOSFET Switch resistance BOOT-PH = 5.7 V 1.5 3.0 Ω LOW-SIDE MOSFET Switch resistance VIN = 12 V 0.8 1.5 Ω ERROR AMPLIFIER Input current VSENSE pin 20 nA Error-amplifier gm –2 µA < I(COMP) < 2 µA, V(COMP) = 1 V 108 µMhos EA gm during slow start –2 µA < I(COMP) < 2 µA, V(COMP) = 1 V, VSENSE = 0.4 V 27 µMhos Error amplifier dc gain VSENSE = 0.8 V 1000 V/V Minimum unity-gain bandwidth 0.5 MHz Error amplifier source and sink V(COMP) = 1 V, 100 mV overdrive ±8 µA Start-switching threshold 0.57 V COMP to Iswitch gm 1.0 A/V CURRENT LIMIT High-side sourcing current-limit BOOT-PH = 5.7 V 250 350 500 mA threshold Zero-cross detect current –1.1 mA THERMAL SHUTDOWN Thermal shutdown 176 C RT/CLK Operating frequency using RT mode 50 1100 kHz Switching frequency R(RT/CLK) = 120 kΩ 425 472 520 kHz Minimum CLK pulse duration 40 ns RT/CLK voltage R(RT/CLK) = 120 kΩ 0.53 V RT/CLK high threshold 1.8 V RT/CLK low threshold 0.5 V RT/CLK falling-edge to PH rising- Measure at 500 kHz with RT resistor 67 ns edge delay PLL lock-in time Measure at 500 kHz 100 µs (1) The electrical ratings specified in this section apply to all specifications in this document unless otherwise noted. These specifications will be interpreted as conditions that will not degrade the device’s parametric or functional specifications for the life of the product containing it. Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: TPS54061-Q1 |
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