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TPS2493PW Datasheet(PDF) 3 Page - Texas Instruments |
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TPS2493PW Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 33 page  TPS2492 TPS2493 www.ti.com SLUSA65A – JULY 2010 – REVISED AUGUST 2010 ELECTRICAL CHARACTERISTICS 9 V ≤ VVCC ≤ 80 V, -40°C ≤ TJ ≤ 125°C, VTIMER = 0 V and all outputs unloaded. Typical specification are at TJ = 25°C, VVCC = 48 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Supply Current (VCC) IVCC Enabled VUVEN = Hi, VSENSE = VOUT = VVCC 665 1000 µA IVCC Disabled VUVEN = Lo, VSENSE = VVCC, VOUT = 0 120 250 Input Supply UVLO (VCC) VVCC turn on Rising 8.4 8.8 V Hysteresis 50 100 150 mV Current Sense Input (SENSE) ISENSE Input bias current VSENSE = VOUT = VVCC 7.5 20 µA Reference Voltage Output (VREF) VREF Reference voltage 0 ≤ IVREF ≤ 1 mA 3.9 4 4.1 V Power Limiting Input (PROG) Input bias current; device IPROG 0.4 ≤ VPROG ≤ 4 V VUVEN = 48 V 5 µA enabled; sourcing or sinking Pull down resistance; device RPROG IPROG = 200 µA; VUVEN = 0 V 375 600 Ω disabled Power Limiting and Current Limiting (SENSE) Current limit threshold VPROG = 2.4 V; VOUT = 0 V; VVCC = 48 V 17 25 33 V(VCC-SENSE) with power limiting VPROG = 0.9 V; VOUT = 30 V; VVCC = 48 V 17 25 33 trip mV Current limit threshold V(VCC-SENSE) without power VPROG = 4 V; VSENSE = VOUT 45 50 55 limiting trip VPROG = 4 V; VOUT = VSENSE; V(VCC-SENSE): 0 Large overload response time to tF_TRIP rising to 200 mV; C(GATE-OUT) = 2 nF; 1.2 µs GATE low V(GATE-OUT) = 1 V TIMER Operation (TIMER) VTIMER = 0 V 17 27 36 ISOURCE TIMER source current VTIMER = 0 V; TJ = 25°C 22 27 32 µA VTIMER = 5 V 1.5 2.7 3.7 ISINK TIMER sink current VTIMER = 5 V; TJ = 25°C 2.1 2.7 3.1 TIMER upper threshold 3.9 4 0 4.1 VTIMER V TIMER lower reset threshold TPS2492 only 0.96 1.00 1.04 DRETRY Fault retry duty cycle TPS2493 only 0.5 0.75 1 % Fault Indicator Output (FLT) IFLT = 2 mA 0.1 0.25 Low voltage (sinking) V IFLT = 4 mA 0.25 0.5 ILEAKAGE Leakage current FLT high impedance 10 µA Under-Voltage and Enable Input (UVEN) VUVEN_H UVEN rising 1.31 1.35 1.39 V Threshold voltage Hysteresis 80 100 120 mV Leakage current VUVEN = 48 V 1 µA Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): TPS2492 TPS2493 |
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