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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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TPS544B20 Fiches technique(PDF) 8 Page - Texas Instruments |
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TPS544B20 Fiches technique(HTML) 8 Page - Texas Instruments |
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8 / 74 page  TPS544B20, TPS544C20 SLUSB69 – MAY 2014 www.ti.com Electrical Characteristics (continued) TJ = –40°C to 125°C, VIN = VVDD= 12 V, RRT = 38.3 kΩ; zero power dissipation (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT REMOTE SENSE AMPLIFIER (VOUTS+ – VOUTS–) = 0.6 V -5 5 VDIFFO(ERROR) Error voltage from DIFFO to VSNS (VOUTS+ – VOUTS–) = 1.2 V -8 8 mV (VOUTS+ – VOUTS–) = 3.0 V -17 17 BW Closed-loop bandwidth(3) 2 MHz RVOUTx Output voltage sense input VOUT+ = 1.2V 55 80 105 k Ω impedance VDIFFO(max) Maximum DIFFO output voltage VBP6-0.2 V DIFFO sourcing current 1 IDIFFO mA DIFFO sinking current 1 POWER STAGE VVDD = 4.5 V, TJ = 25°C 4.9 RHS High-side on-resistance m Ω VVDD ≥ 12 V, TJ = 25°C 4.5 VVDD = 18 V, TJ = 25°C 0.4 0.7 IHS(leak) High-side leakage current µA VVDD = 18 V, TJ = 125°C (3) 1.5 VVDD = 4.5 V, TJ = 25°C 2.2 RLS Low-side on-resistance m Ω VVDD ≥ 12 V, TJ = 25°C 2.0 CURRENT LIMIT tOFF(OC) Off time between restart attempts Hiccup mode 7 × tSS ms Factory default settings 26 TPS544B20 Programmable range 5 30 Output current overcurrent fault IOC(flt) A threshold Factory default settings 39 TPS544C20 Programmable range 5 45 Factory default settings 20 TPS544B20 Programmable range 4 29.5 Output current overcurrent warning IOC(warn) A threshold Factory default settings 30 TPS544C20 Programmable range 4 44.5 Output current overcurrent fault IOC(acc) IOCF = 20 A (3) ±3 A and warning accuracy Minimum LDRV pulse width for tLSOC(min) 400 500 ns valid current sensing(3) HIGH-SIDE SHORT CIRCUIT PROTECTION TPS544B20 30 58 High-side short-circuit protection IHSOC TJ = 25°C A fault threshold TPS544C20 45 75 POWER GOOD (PGOOD) VFBPGH FB PGOOD high threshold Factory default settings 675 mV VFBPGL FB PGOOD low threshold Factory default settings 525 mV VPG(acc) PGOOD accuracy over range Factory default settings –5% 5% Vpg(hyst) FB PGOOD hysteresis voltage 10 50 mV RPGOOD PGOOD pull-down resistance VFB = 0, IPGOOD = 5 mA 30 70 Ω IPGOOD(lk) PGOOD pin leakage current Factory default settings, VPGOOD = 5 V 20 µA OUTPUT OVERVOLTAGE AND UNDERVOLTAGE PROTECTION VFBOV FB pin over voltage threshold Factory default settings 700 mV VFBUV FB pin under voltage threshold Factory default settings 499 mV VUVOV(acc) FB UV, OV accuracy over range Factory default settings –4.5% 4.5% (3) Specified by design. Not production tested. 8 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated |
Numéro de pièce similaire - TPS544B20_15 |
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Description similaire - TPS544B20_15 |
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