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TPS53126 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS53126 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 33 page  TPS53126 www.ti.com SLUS909B – MAY 2009 – REVISED AUGUST 2014 7.4 Thermal Information TPS53126 THERMAL METRIC(1) UNIT PW (24 PINS) RGE( 24 PINS) RθJA Junction-to-ambient thermal resistance 88.9 35.4 RθJC(top) Junction-to-case (top) thermal resistance 26.5 39.1 RθJB Junction-to-board thermal resistance 43.5 13.6 °C/W ψJT Junction-to-top characterization parameter 1.1 0.5 ψJB Junction-to-board characterization parameter 43.0 13.6 RθJC(bot) Junction-to-case (bottom) thermal resistance n/a 3.8 (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. 7.5 Electrical Characteristics over recommended free-air temperature range, VIN = 12 V (Unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT VIN current, TA = 25°C, VREG5 tied to V5FLT, EN1 = IIN VIN supply current 450 800 μA EN2 = 5V, VFB1 = VFB2 = 0.8V, SW1 = SW2 = 0.5V VIN current, TA = 25°C, No load, EN1 = EN2 = 0 V, IVINSDN VIN shutdown current 30 60 μA VREG5 = ON VFB VOLTAGE and DISCHARGE RESISTANCE Bandgap initial regulation VBG TA = 25°C -1.0% 1.0% accuracy TA = 25°C, TEST2 = 0 V, SWinj = OFF 755 765 775 VVFBTHLx VFBx threshold voltage mV TA = –40°C to 85°C, TEST2 = 0 V, SWinj = OFF (1) 752 778 TA = 25°C, TEST2 = V5FILT, SWinj = OFF 748 758 768 VVFBTHHx VFBx threshold voltage mV TA = –40°C to 85°C, TEST2 = V5FILT, SWinj = OFF (1) 745 771 IVFB VFB input current VFBx = 0.8 V, TA = 25°C –0.01 ±0.1 μA RDischg VO discharge resistance ENx = 0 V, VOx = 0.5 V, TA = 25°C 40 80 Ω VREG5 OUTPUT TA = 25°C, 5.5 V < VIN < 24 V, VVREG5 VREG5 output voltage 4.6 5.0 5.2 V 0 < IVREG5 < 10 mA VLN5 Line regulation 5.5 V < VIN < 24 V, IVREG5 = 10 mA 20 mV VLD5 Load regulation 1 mA < IVREG5 < 10 mA 40 mV IVREG5 Output current VIN = 5.5 V, VVREG5 = 4 V, TA = 25°C 170 mA OUTPUT: N-CHANNEL MOSFET GATE DRIVERS Source, IDRVHx = –100 mA 5.5 11 RDRVH DRVH resistance Ω Sink, IDRVHx = 100 mA 2.5 5 Source, IDRVLx = –100 mA 4 12 RDRVL DRVL resistance Ω Sink, IDRVLx = 100 mA 2 4 INTERNAL BOOST DIODE VFBST Forward voltage VVREG5-VBSTx, IF = 10 mA, TA = 25°C 0.7 0.8 0.9 V IVBSTLK VBST leakage current VBSTx = 29 V, SWx = 24 V, TA = 25°C 0.1 1 μA SOFT START Tss Internal SS time Internal soft start VFBx = 0.735 V 0.85 1.2 1.4 ms UVLO Wake up 3.7 4.0 4.3 VUV5VFILT V5FILT UVLO threshold V Hysteresis 0.2 0.3 0.4 (1) Ensured by design. Not production tested. Copyright © 2009–2014, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: TPS53126 |
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