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TPS54361 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS54361 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 51 page 5 TPS54361 www.ti.com SLVSC39C – NOVEMBER 2013 – REVISED FEBRUARY 2016 Product Folder Links: TPS54361 Submit Documentation Feedback Copyright © 2013–2016, Texas Instruments Incorporated (1) Open Loop current limit measured directly at the SW pin and is independent of the inductor value and slope compensation. 6.5 Electrical Characteristics TJ = –40°C to 150°C, VIN = 4.5 V to 60 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE (VIN PIN) Operating input voltage 4.5 60 V Internal undervoltage lockout threshold Rising 4.1 4.3 4.48 V Internal undervoltage lockout threshold hysteresis 325 mV Shutdown supply current EN = 0 V, 25°C, 4.5 V ≤ VIN ≤ 60 V 2.25 4.5 μA Operating: nonswitching supply current FB = 0.9 V, TA = 25°C 152 200 μA ENABLE AND UVLO (EN PIN) Enable threshold voltage No voltage hysteresis, rising and falling 1.1 1.2 1.3 V Input current Enable threshold +50 mV –4.6 μA Enable threshold –50 mV –0.58 –1.2 –1.8 Hysteresis current –2.2 –3.4 –4.5 μA VOLTAGE REFERENCE Voltage reference 0.792 0.8 0.808 V HIGH-SIDE MOSFET ON-resistance VIN = 12 V, BOOT-SW = 6 V 89 190 m Ω ERROR AMPLIFIER Input current 50 nA Error amplifier transconductance (gm) –2 μA < ICOMP < 2 μA, VCOMP = 1 V 350 μS Error amplifier transconductance (gm) during soft start –2 μA < ICOMP < 2 μA, VCOMP = 1 V, VFB = 0.4 V 77 μS Error amplifier DC gain VFB = 0.8 V 10 000 V/V Min unity gain bandwidth 2500 kHz Error amplifier source/sink V(COMP) = 1 V, 100-mV overdrive ±30 μA COMP to SW current transconductance 12 A/V CURRENT LIMIT Current limit threshold All VIN and temperatures, open loop(1) 4.5 5.5 6.8 A All temperatures, VIN = 12 V, open loop (1) 4.5 5.5 6.3 VIN = 12 V, TA = 25°C, open loop (1) 5.2 5.5 5.9 THERMAL SHUTDOWN Thermal shutdown 176 °C Thermal shutdown hysteresis 12 °C TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN) RT/CLK high threshold 1.55 2 V RT/CLK low threshold 0.5 1.2 V |
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