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TPS51225 датащи(PDF) 5 Page - Texas Instruments |
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TPS51225 датащи(HTML) 5 Page - Texas Instruments |
5 / 31 page TPS51225, TPS51225B, TPS51225C www.ti.com SLUSAV0B – JANUARY 2012 – REVISED SEPTEMBER 2012 ELECTRICAL CHARACTERISTICS over operating free-air temperature range, VVIN= 12 V, VVO1= 5 V, VVFB1= VVFB2= 2 V, VEN1= VEN2= 3.3 V (unless otherwise noted) PARAMETER TEST CONDITION MIN TYP MAX UNIT SUPPLY CURRENT IVIN1 VIN supply current-1 TA = 25°C, No load, VVO1=0 V 860 μA IVIN2 VIN supply current-2 TA = 25°C, No load 30 μA IVO1 VO1 supply current TA = 25°C, No load, VVFB1= VVFB2=2.05 V 900 μA TA = 25°C, No load, VVO1= 0 V, TPS51225 IVIN(STBY) VIN stand-by current 95 μA TPS51225B VEN1= VEN2= 0 V TA = 25°C, No load, VVO1=0 V, VEN1=VEN2=0V IVIN(STBY) VIN stand-by current 180 μA (TPS51225C) INTERNAL REFERENCE TA = 25°C 1.99 2.00 2.01 V VFBx VFB regulation voltage 1.98 2.00 2.02 V VREG5 OUTPUT No load, VVO1= 0 V, TA = 25°C 4.9 5.0 5.1 VVREG5 VREG5 output voltage VVIN> 7 V , VVO1= 0 V, IVREG5< 100 mA 4.85 5.00 5.10 V VVIN > 5.5 V , VVO1= 0 V, IVREG5< 35 mA 4.85 5.00 5.10 IVREG5 VREG5 current limit VVIN= 7 V, VVO1= 0 V, VVREG5= 4.5 V 100 150 mA RV5SW 5-V switch resistance VVO1= 5 V, IVREG5= 50 mA, TA = 25°C 1.8 Ω VREG3 OUTPUT No load, VVO1= 0 V, TA = 25°C 3.267 3.300 3.333 VVIN > 7 V , VVO1= 0 V, IVREG3< 100 mA 3.217 3.300 3.383 VVREG3 VREG3 output voltage 5.5 V < VVIN , VVO1= 0 V, IVREG3< 35 mA 3.234 3.300 3.366 V VVIN > 5.5 V, VVO1 = 0 V, IVREG3< 35 mA, 0°C ≤ TA ≤ 85°C 3.267 3.300 3.333 VVIN > 5.5 V, VVO1 = 5 V, IVREG3< 35 mA, 0°C ≤ TA ≤ 85°C 3.267 3.300 3.333 IVREG3 VREG3 current limit VVO1= 0 V, VVREG3= 3.0 V, VVIN= 7 V 100 150 mA DUTY CYCLE and FREQUENCY CONTROL fSW1 CH1 frequency(1) TA = 25°C, VVIN= 20 V 240 300 360 kHz fSW2 CH2 frequency(1) TA = 25°C, VVIN= 20 V 280 355 430 kHz tOFF(MIN) Minimum off-time TA = 25°C 200 300 500 ns MOSFET DRIVERS Source, (VVBST – VDRVH) = 0.25 V, (VVBST – VSW) = 5 V 3.0 RDRVH DRVH resistance Ω Sink, (VDRVH – VSW) = 0.25 V, (VVBST – VSW) = 5 V 1.9 Source, (VVREG5 – VDRVL) = 0.25 V, VVREG5 = 5 V 3.0 RDRVL DRVL resistance Ω Sink, VDRVL = 0.25 V, VVREG5= 5 V 0.9 DRVH-off to DRVL-on 12 tD Dead time ns DRVL-off to DRVH-on 20 INTERNAL BOOT STRAP SWITCH RVBST (ON) Boost switch on-resistance TA = 25°C, IVBST = 10 mA 13 Ω IVBSTLK VBST leakage current TA = 25°C 1 µA CLOCK OUTPUT RVCLK (PU) VCLK on-resistance (pull-up) TA = 25°C 10 Ω RVCLK (PD) VCLK on-resistance (pull-down) TA = 25°C 10 fCLK Clock frequency TA = 25°C 260 kHz (1) Ensured by design. Not production tested. Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links :TPS51225 TPS51225B TPS51225C |
Аналогичный номер детали - TPS51225_15 |
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Аналогичное описание - TPS51225_15 |
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