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TPS54521 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS54521 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 41 page  TPS54521 SLVS981C – JUNE 2010 – REVISED AUGUST 2013 www.ti.com ELECTRICAL CHARACTERISTICS TJ= –40°C to 125°C, VIN = 4.5V to 17V, PVIN = 1.6V to 17V (unless otherwise noted) DESCRIPTION CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE (VIN AND PVIN PINS) PVIN operating input voltage 1.6 17 V VIN operating input voltage 4.5 17 V VIN internal UVLO threshold VIN rising 4.0 4.5 V VIN internal UVLO hysteresis 150 mV VIN shutdown supply Current EN = 0 V 2 5 μA VIN operating – non switching supply current VSENSE = 810 mV 600 800 μA ENABLE AND UVLO (EN PIN) Enable threshold Rising 1.21 1.26 V Enable threshold Falling 1.10 1.17 V Input current EN = 1.1 V 1.15 μA Hysteresis current EN = 1.3 V 3.4 μA VOLTAGE REFERENCE Voltage reference 0 A ≤ Iout ≤ 5 A 0.776 0.800 0.824 V MOSFET High-side switch resistance(1) BOOT-PH = 3 V 74 105 m Ω High-side switch resistance(1) BOOT-PH = 6 V 57 95 m Ω Low-side Switch Resistance(1) VIN = 12 V 50 82 m Ω ERROR AMPLIFIER Error amplifier Transconductance (gm) –2 μA < ICOMP < 2 μA, V(COMP) = 1 V 1300 μMhos Error amplifier dc gain VSENSE = 0.8 V 1000 3100 V/V Error amplifier source/sink V(COMP) = 1 V, 100 mV input overdrive ±110 μA Start switching threshold 0.25 V COMP to Iswitch gm 12 A/V CURRENT LIMIT High-side switch current limit threshold 7 9 A Low-side switch sourcing current limit 6 8 A Low-side switch sinking current limit 1 2.6 A Hiccup wait time before triggering hiccup 512 cycles Hiccup time before restart 16384 cycles (1) Measured at pins 4 Submit Documentation Feedback Copyright © 2010–2013, Texas Instruments Incorporated Product Folder Links :TPS54521 |
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Similar Description - TPS54521_17 |
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